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Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 4)

Mark the letter A, B, C, D on your answer sheet to indicate the word whose underline is pronounced differently from the rest

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 704 lượt xem 6 năm trước

Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 4)

Mark the letter A, B, C, D on your answer sheet to indicate the word whose underline is pronounced differently from the rest.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 1.4 K lượt xem 6 năm trước

Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 4)

Mark the letter A, B, C, D on your answer sheet to indicate the word that differs from the rest in the position of the main stress

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 2.7 K lượt xem 6 năm trước

Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 4)

Mark the letter A, B, C, D on your answer sheet to indicate the word that differs from the rest in the position of the main stress

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 3.7 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals, and anaesthetics. Patients do not often believe they really need surgery - cutting into a part of the body as opposed to treatment with drugs.In the early years of the 20th century there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Clogged blood vessels can be cleaned out, and broken ones mended or replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.The scope of surgery has increased remarkably in the past decades. Its safety has increased too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example to certain types of birth defects in new born babies, and, at the other end of the scale, to life saving operations for the octogenarian. The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.Many developments in modern surgery are almost incredible. They include replacement of damaged blood vessels with simulated ones made of plastic: the replacement of heart valves with plastic substitutes; the transplanting of tissues such as lens of the eye; the invention of the artificial kidney to clean the blood of poisons at regular intervals and the development of heart and lung machines to keep patients alive during very long operations. All these things open a hopeful vista for the future of surgery.One of the most revolutionary areas of modem surgery is that of organ transplants. Until a few decades ago, no person, except an identical twin, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful."Spare parts" surgery, the simple routine replacement of all worn-out organs by new ones, isstill a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if your doctors say to you, "Yes, I think it is possible to operate on you for this condition." You can be happy if your surgeon can operate because it means ________.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 604 lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals, and anaesthetics. Patients do not often believe they really need surgery - cutting into a part of the body as opposed to treatment with drugs.In the early years of the 20th century there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Clogged blood vessels can be cleaned out, and broken ones mended or replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.The scope of surgery has increased remarkably in the past decades. Its safety has increased too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example to certain types of birth defects in new born babies, and, at the other end of the scale, to life saving operations for the octogenarian. The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.Many developments in modern surgery are almost incredible. They include replacement of damaged blood vessels with simulated ones made of plastic: the replacement of heart valves with plastic substitutes; the transplanting of tissues such as lens of the eye; the invention of the artificial kidney to clean the blood of poisons at regular intervals and the development of heart and lung machines to keep patients alive during very long operations. All these things open a hopeful vista for the future of surgery.One of the most revolutionary areas of modem surgery is that of organ transplants. Until a few decades ago, no person, except an identical twin, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful."Spare parts" surgery, the simple routine replacement of all worn-out organs by new ones, isstill a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if your doctors say to you, "Yes, I think it is possible to operate on you for this condition." Which of the following has the same meaning as "vista" in the fourth paragraph?'

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 610 lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals, and anaesthetics. Patients do not often believe they really need surgery - cutting into a part of the body as opposed to treatment with drugs.In the early years of the 20th century there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Clogged blood vessels can be cleaned out, and broken ones mended or replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.The scope of surgery has increased remarkably in the past decades. Its safety has increased too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example to certain types of birth defects in new born babies, and, at the other end of the scale, to life saving operations for the octogenarian. The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.Many developments in modern surgery are almost incredible. They include replacement of damaged blood vessels with simulated ones made of plastic: the replacement of heart valves with plastic substitutes; the transplanting of tissues such as lens of the eye; the invention of the artificial kidney to clean the blood of poisons at regular intervals and the development of heart and lung machines to keep patients alive during very long operations. All these things open a hopeful vista for the future of surgery.One of the most revolutionary areas of modem surgery is that of organ transplants. Until a few decades ago, no person, except an identical twin, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful."Spare parts" surgery, the simple routine replacement of all worn-out organs by new ones, isstill a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if your doctors say to you, "Yes, I think it is possible to operate on you for this condition." Some of the more astonishing innovations in modern surgery include _________.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 0.9 K lượt xem 6 năm trước

Tổng hợp đề thi Tiếng Anh có lời giải (Đề số 14)

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 1.1 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals, and anaesthetics. Patients do not often believe they really need surgery - cutting into a part of the body as opposed to treatment with drugs.In the early years of the 20th century there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Clogged blood vessels can be cleaned out, and broken ones mended or replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.The scope of surgery has increased remarkably in the past decades. Its safety has increased too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example to certain types of birth defects in new born babies, and, at the other end of the scale, to life saving operations for the octogenarian. The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.Many developments in modern surgery are almost incredible. They include replacement of damaged blood vessels with simulated ones made of plastic: the replacement of heart valves with plastic substitutes; the transplanting of tissues such as lens of the eye; the invention of the artificial kidney to clean the blood of poisons at regular intervals and the development of heart and lung machines to keep patients alive during very long operations. All these things open a hopeful vista for the future of surgery.One of the most revolutionary areas of modem surgery is that of organ transplants. Until a few decades ago, no person, except an identical twin, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful."Spare parts" surgery, the simple routine replacement of all worn-out organs by new ones, isstill a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if your doctors say to you, "Yes, I think it is possible to operate on you for this condition." Today, compared with 1910 ________.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 1.5 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals, and anaesthetics. Patients do not often believe they really need surgery - cutting into a part of the body as opposed to treatment with drugs.In the early years of the 20th century there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Clogged blood vessels can be cleaned out, and broken ones mended or replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.The scope of surgery has increased remarkably in the past decades. Its safety has increased too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example to certain types of birth defects in new born babies, and, at the other end of the scale, to life saving operations for the octogenarian. The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.Many developments in modern surgery are almost incredible. They include replacement of damaged blood vessels with simulated ones made of plastic: the replacement of heart valves with plastic substitutes; the transplanting of tissues such as lens of the eye; the invention of the artificial kidney to clean the blood of poisons at regular intervals and the development of heart and lung machines to keep patients alive during very long operations. All these things open a hopeful vista for the future of surgery.One of the most revolutionary areas of modem surgery is that of organ transplants. Until a few decades ago, no person, except an identical twin, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful."Spare parts" surgery, the simple routine replacement of all worn-out organs by new ones, isstill a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if your doctors say to you, "Yes, I think it is possible to operate on you for this condition." The word "clogged" in the second paragraph is most likely to correspond to __________.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 442 lượt xem 6 năm trước

Tổng hợp đề thi Tiếng Anh có lời giải (Đề số 14)

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 1.9 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals, and anaesthetics. Patients do not often believe they really need surgery - cutting into a part of the body as opposed to treatment with drugs.In the early years of the 20th century there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Clogged blood vessels can be cleaned out, and broken ones mended or replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.The scope of surgery has increased remarkably in the past decades. Its safety has increased too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example to certain types of birth defects in new born babies, and, at the other end of the scale, to life saving operations for the octogenarian. The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.Many developments in modern surgery are almost incredible. They include replacement of damaged blood vessels with simulated ones made of plastic: the replacement of heart valves with plastic substitutes; the transplanting of tissues such as lens of the eye; the invention of the artificial kidney to clean the blood of poisons at regular intervals and the development of heart and lung machines to keep patients alive during very long operations. All these things open a hopeful vista for the future of surgery.One of the most revolutionary areas of modem surgery is that of organ transplants. Until a few decades ago, no person, except an identical twin, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful."Spare parts" surgery, the simple routine replacement of all worn-out organs by new ones, isstill a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if your doctors say to you, "Yes, I think it is possible to operate on you for this condition." A patient can still live a comfortable life even after the removal of _________.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 0.9 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals, and anaesthetics. Patients do not often believe they really need surgery - cutting into a part of the body as opposed to treatment with drugs.In the early years of the 20th century there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Clogged blood vessels can be cleaned out, and broken ones mended or replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.The scope of surgery has increased remarkably in the past decades. Its safety has increased too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example to certain types of birth defects in new born babies, and, at the other end of the scale, to life saving operations for the octogenarian. The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.Many developments in modern surgery are almost incredible. They include replacement of damaged blood vessels with simulated ones made of plastic: the replacement of heart valves with plastic substitutes; the transplanting of tissues such as lens of the eye; the invention of the artificial kidney to clean the blood of poisons at regular intervals and the development of heart and lung machines to keep patients alive during very long operations. All these things open a hopeful vista for the future of surgery.One of the most revolutionary areas of modem surgery is that of organ transplants. Until a few decades ago, no person, except an identical twin, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful."Spare parts" surgery, the simple routine replacement of all worn-out organs by new ones, isstill a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if your doctors say to you, "Yes, I think it is possible to operate on you for this condition." Surgeons in the early 20th century, compared with modem ones _______.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 465 lượt xem 6 năm trước

Tổng hợp đề thi Tiếng Anh có lời giải (Đề số 14)

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 1.6 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals, and anaesthetics. Patients do not often believe they really need surgery - cutting into a part of the body as opposed to treatment with drugs.In the early years of the 20th century there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Clogged blood vessels can be cleaned out, and broken ones mended or replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.The scope of surgery has increased remarkably in the past decades. Its safety has increased too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example to certain types of birth defects in new born babies, and, at the other end of the scale, to life saving operations for the octogenarian. The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.Many developments in modern surgery are almost incredible. They include replacement of damaged blood vessels with simulated ones made of plastic: the replacement of heart valves with plastic substitutes; the transplanting of tissues such as lens of the eye; the invention of the artificial kidney to clean the blood of poisons at regular intervals and the development of heart and lung machines to keep patients alive during very long operations. All these things open a hopeful vista for the future of surgery.One of the most revolutionary areas of modem surgery is that of organ transplants. Until a few decades ago, no person, except an identical twin, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful."Spare parts" surgery, the simple routine replacement of all worn-out organs by new ones, isstill a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if your doctors say to you, "Yes, I think it is possible to operate on you for this condition." Most people are afraid of being operated on __________.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 567 lượt xem 6 năm trước

100 bài toán hay và khó về (H+ trong NO3-) KHÔNG có khí H2 thoát ra (P1)

Hòa tan hết hỗn hợp gồm Fe, FeO, Fe2O3, Fe3O4, Fe(OH)2 và Fe(OH)3 trong dung dịch chứa 0,26 mol H2SO4 và 0,22 mol HNO3, thu được dung dịch X (chỉ chứa muối) và 0,05 mol khí NO (spkdn). Cho HCl dư vào X lại thấy có 0,01 mol NO thoát ra. Khối lượng muối khan có trong X là?

Hóa học Lớp 12

Xem chi tiết 653 lượt xem 6 năm trước

100 bài toán hay và khó về (H+ trong NO3-) KHÔNG có khí H2 thoát ra (P1)

Hòa tan hết 21,52 gam hỗn hợp X gồm Fe, FeO và Fe3O4 trong dung dịch HNO3 loãng dư, thu được dung dịch X chứa m gam muối và 4,704 lít khí NO (sản phẩm khử duy nhất). Giá trị của m là?

Hóa học Lớp 12

Xem chi tiết 11.9 K lượt xem 6 năm trước

100 bài toán hay và khó về (H+ trong NO3-) KHÔNG có khí H2 thoát ra (P1)

Hòa tan hết 15,6 gam hỗn hợp X gồm Fe và Fe3O4 trong dung dịch HNO3 loãng dư, thu được dung dịch X chứa 50,82 gam muối và khí NO (sản phẩm khử duy nhất). Phần trăm khối lượng của Fe trong X là?

Hóa học Lớp 12

Xem chi tiết 5.5 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.Life originated in the early seas less than a billion years after the Earth was formed. Yet another three billions years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on megafossils - relatively large specimens of essential whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive megafossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of 10 modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by the animals that preyed on the plant-eaters. Moreover, the megafossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago.Recently, however, paleontologists have been taking a closer look at sediments below this Silurian- Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rock in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans - plant microfossils and microscopic pieces of small animals. In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.These discovered fossils have not only revealed the existence ofpreviously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our view about the nature of the early plants and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-formsWith which of the following conclusions would the author probably agree?

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 359 lượt xem 6 năm trước

Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 3)

Read the passage and choose the best option to complete each blank. Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes __46_ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals __47_ feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds __48_. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems __49_ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of _50__ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems.Điền vào số (50)

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 548 lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.Life originated in the early seas less than a billion years after the Earth was formed. Yet another three billions years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on megafossils - relatively large specimens of essential whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive megafossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of 10 modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by the animals that preyed on the plant-eaters. Moreover, the megafossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago.Recently, however, paleontologists have been taking a closer look at sediments below this Silurian- Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rock in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans - plant microfossils and microscopic pieces of small animals. In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.These discovered fossils have not only revealed the existence ofpreviously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our view about the nature of the early plants and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-formsWhich of the following resulted from the discovery of microscopic fossils?

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 477 lượt xem 6 năm trước

100 bài toán hay và khó về (H+ trong NO3-) KHÔNG có khí H2 thoát ra (P1)

Hòa tan hết 13,12 gam hỗn hợp gồm Fe và Fe3O4 trong dung dịch HNO3 loãng dư, thu được dung dịch X chứa 48,4 gam muối và a mol khí NO (sản phẩm khử duy nhất). Giá trị của a là.

Hóa học Lớp 12

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Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 3)

Read the passage and choose the best option to complete each blank. Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes __46_ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals __47_ feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds __48_. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems __49_ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of _50__ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems.Điền vào số (49)

Tiếng Anh Tốt nghiệp THPT

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.Life originated in the early seas less than a billion years after the Earth was formed. Yet another three billions years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on megafossils - relatively large specimens of essential whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive megafossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of 10 modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by the animals that preyed on the plant-eaters. Moreover, the megafossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago.Recently, however, paleontologists have been taking a closer look at sediments below this Silurian- Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rock in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans - plant microfossils and microscopic pieces of small animals. In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.These discovered fossils have not only revealed the existence ofpreviously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our view about the nature of the early plants and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-formsThe word "they" refers to ______.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 330 lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.Life originated in the early seas less than a billion years after the Earth was formed. Yet another three billions years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on megafossils - relatively large specimens of essential whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive megafossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of 10 modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by the animals that preyed on the plant-eaters. Moreover, the megafossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago.Recently, however, paleontologists have been taking a closer look at sediments below this Silurian- Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rock in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans - plant microfossils and microscopic pieces of small animals. In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.These discovered fossils have not only revealed the existence ofpreviously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our view about the nature of the early plants and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-formsThe word "extracted" is closest in meaning to ___________.

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Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 3)

Read the passage and choose the best option to complete each blank. Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes __46_ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals __47_ feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds __48_. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems __49_ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of _50__ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems.Điền vào số (48)

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 445 lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.Life originated in the early seas less than a billion years after the Earth was formed. Yet another three billions years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on megafossils - relatively large specimens of essential whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive megafossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of 10 modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by the animals that preyed on the plant-eaters. Moreover, the megafossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago.Recently, however, paleontologists have been taking a closer look at sediments below this Silurian- Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rock in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans - plant microfossils and microscopic pieces of small animals. In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.These discovered fossils have not only revealed the existence ofpreviously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our view about the nature of the early plants and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-formsAccording to the passage, what happened about 400 million years ago?

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 443 lượt xem 6 năm trước

Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 3)

Read the passage and choose the best option to complete each blank. Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes __46_ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals __47_ feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds __48_. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems __49_ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of _50__ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems.Điền vào số (47)

Tiếng Anh Tốt nghiệp THPT

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57 Bài tập lên men glucozơ

Lên men 360 gam glucozơ với hiệu suất phản ứng là 80% thu được V ml C2H5OH 46o (khối lượng riêng của C2H5OH là 0,8 gam/ml). Giá trị của V là

Hóa học Lớp 12

Xem chi tiết 4.6 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.Life originated in the early seas less than a billion years after the Earth was formed. Yet another three billions years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on megafossils - relatively large specimens of essential whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive megafossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of 10 modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by the animals that preyed on the plant-eaters. Moreover, the megafossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago.Recently, however, paleontologists have been taking a closer look at sediments below this Silurian- Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rock in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans - plant microfossils and microscopic pieces of small animals. In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.These discovered fossils have not only revealed the existence ofpreviously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our view about the nature of the early plants and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-formsAccording to the theory that the author calls "the traditional view", what was the first form of life to appear on land?

Tiếng Anh Tốt nghiệp THPT

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Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 3)

Read the passage and choose the best option to complete each blank. Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes __46_ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals __47_ feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds __48_. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems __49_ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of _50__ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems.Điền vào số (46)

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 1.8 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.Life originated in the early seas less than a billion years after the Earth was formed. Yet another three billions years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on megafossils - relatively large specimens of essential whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive megafossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of 10 modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by the animals that preyed on the plant-eaters. Moreover, the megafossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago.Recently, however, paleontologists have been taking a closer look at sediments below this Silurian- Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rock in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans - plant microfossils and microscopic pieces of small animals. In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.These discovered fossils have not only revealed the existence ofpreviously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our view about the nature of the early plants and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-formsThe word "drastic" is closest in meaning to ________.

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 600 lượt xem 6 năm trước

Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 3)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from . Martin Luther King, Jf., is well- known for his work in civil rights and for his many famous speeches, among which is his moving “ I have a dream” speech. But fewer people know much about King’s childhood. M.L., as he was called, was born in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was born. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it. M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.M.L. was _______ by the atmosphere in which he grew up.'

Tiếng Anh Tốt nghiệp THPT

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Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 3)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from . Martin Luther King, Jf., is well- known for his work in civil rights and for his many famous speeches, among which is his moving “ I have a dream” speech. But fewer people know much about King’s childhood. M.L., as he was called, was born in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was born. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it. M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.From the passage we can infer that:

Tiếng Anh Tốt nghiệp THPT

Xem chi tiết 340 lượt xem 6 năm trước

20 đề thi thử THPTQG môn Sinh học năm 2019 - 2020 (Đề số 11)

Khảo sát 4 dòng ruồi giấm khác nhau về nguồn gốc địa lý, người ta ghi được trật tự các gen của NST thuộc 4 dòng được tạo ra do đột biến đảo đoạn như sau:Dòng 1: DEFGHIJKLDòng 2: DEFJGHIKLDòng 3: DEFIHGJKLDòng 4: DEFJIHGKLNếu 4 là dòng gốc, thì thứ tự phát sinh các dòng còn lại là:

Sinh học Tốt nghiệp THPT

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TÍNH CHẤT HÓA HỌC CỦA CACBOHIĐRAT

Cho sơ đồ chuyển đổi sau (E, Q, X, Y, Z là hợp chất hữu cơ, mỗi mũi tên biểu thị một phản ứng hoá học) :Công thức của E, Q, X, Y, Z phù hợp với sơ đồ trên lần lượt là

Hóa học Lớp 11

Xem chi tiết 321 lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.KEEPING FIT Bodies are made to move! They are not (31) for sitting around in front of the television or reading magazines. Keeping fit doesn't mean have to be a super-athlete, and even (32) exercise can give you a lot of fun. When you are fit and healthy, you will find you look better and feel better. You will develop more energy and self-confidence.Every time you move, you are exercising. The human body is designed to bend, stretch, run, jump and climb. (33) it does, the stronger and fitter it will become. Best of all, exercise is fun. It's what your body likes doing most-keeping on the move.Physical exercise is not only good for your body. People who take regular exercise are usually happier, more relaxed and more alert than people who sit around all day. Try an experiment-next time you are in a bad mood, go for a walk or play a ball game in the park. See how much better you feel after an hour. A good (34) of achievement is yet another benefit of exercise. People feel good about themselves when they know they have improved their fitness. People who exercise regularly will tell you that they find they have more energy to enjoy life. So have (35) you'll soon see and feel the benefitsĐiền vào ô 35

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20 đề thi thử THPTQG môn Sinh học năm 2019 - 2020 (Đề số 11)

Giả sử có một đột biến lặn ở một gen nằm trên NST thường quy định. Ở một phép lai, trong số các loại giao tử đực thì giao tử mang gen đột biến lặn chiếm tỉ lệ 5%; trong số các giao tử cái thì giao tử mang gen đột biến lặn chiếm tỉ lệ 20%. Theo lý thuyết, trong số các cá thể mang kiểu hình bình thường, cá thể mang gen đột biến có tỉ lệ

Sinh học Tốt nghiệp THPT

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TÍNH CHẤT HÓA HỌC CỦA CACBOHIĐRAT

Cho các chuyển hoá sau : (1) X + H2O →to xt Y (2) Y + H2 →to Ni Sobitol (3) Y + 2AgNO3 + 3NH3 + H2O →to Amoni gluconat + 2Ag + NH4NO3 (4) Y →to xt E + Z (5) Z + H2O →as clorophin X + G X, Y và Z lần lượt là :

Hóa học Lớp 11

Xem chi tiết 3.6 K lượt xem 6 năm trước

24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.KEEPING FIT Bodies are made to move! They are not (31) for sitting around in front of the television or reading magazines. Keeping fit doesn't mean have to be a super-athlete, and even (32) exercise can give you a lot of fun. When you are fit and healthy, you will find you look better and feel better. You will develop more energy and self-confidence.Every time you move, you are exercising. The human body is designed to bend, stretch, run, jump and climb. (33) it does, the stronger and fitter it will become. Best of all, exercise is fun. It's what your body likes doing most-keeping on the move.Physical exercise is not only good for your body. People who take regular exercise are usually happier, more relaxed and more alert than people who sit around all day. Try an experiment-next time you are in a bad mood, go for a walk or play a ball game in the park. See how much better you feel after an hour. A good (34) of achievement is yet another benefit of exercise. People feel good about themselves when they know they have improved their fitness. People who exercise regularly will tell you that they find they have more energy to enjoy life. So have (35) you'll soon see and feel the benefitsĐiền vào ô 34

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Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 3)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from . Martin Luther King, Jf., is well- known for his work in civil rights and for his many famous speeches, among which is his moving “ I have a dream” speech. But fewer people know much about King’s childhood. M.L., as he was called, was born in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was born. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it. M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.Which of the following statements is NOT true?

Tiếng Anh Tốt nghiệp THPT

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.KEEPING FIT Bodies are made to move! They are not (31) for sitting around in front of the television or reading magazines. Keeping fit doesn't mean have to be a super-athlete, and even (32) exercise can give you a lot of fun. When you are fit and healthy, you will find you look better and feel better. You will develop more energy and self-confidence.Every time you move, you are exercising. The human body is designed to bend, stretch, run, jump and climb. (33) it does, the stronger and fitter it will become. Best of all, exercise is fun. It's what your body likes doing most-keeping on the move.Physical exercise is not only good for your body. People who take regular exercise are usually happier, more relaxed and more alert than people who sit around all day. Try an experiment-next time you are in a bad mood, go for a walk or play a ball game in the park. See how much better you feel after an hour. A good (34) of achievement is yet another benefit of exercise. People feel good about themselves when they know they have improved their fitness. People who exercise regularly will tell you that they find they have more energy to enjoy life. So have (35) you'll soon see and feel the benefitsĐiền vào ô 33

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.KEEPING FIT Bodies are made to move! They are not (31) for sitting around in front of the television or reading magazines. Keeping fit doesn't mean have to be a super-athlete, and even (32) exercise can give you a lot of fun. When you are fit and healthy, you will find you look better and feel better. You will develop more energy and self-confidence.Every time you move, you are exercising. The human body is designed to bend, stretch, run, jump and climb. (33) it does, the stronger and fitter it will become. Best of all, exercise is fun. It's what your body likes doing most-keeping on the move.Physical exercise is not only good for your body. People who take regular exercise are usually happier, more relaxed and more alert than people who sit around all day. Try an experiment-next time you are in a bad mood, go for a walk or play a ball game in the park. See how much better you feel after an hour. A good (34) of achievement is yet another benefit of exercise. People feel good about themselves when they know they have improved their fitness. People who exercise regularly will tell you that they find they have more energy to enjoy life. So have (35) you'll soon see and feel the benefitsĐiền vào ô 32

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Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc (Đề số 3)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from . Martin Luther King, Jf., is well- known for his work in civil rights and for his many famous speeches, among which is his moving “ I have a dream” speech. But fewer people know much about King’s childhood. M.L., as he was called, was born in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was born. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it. M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.According to the author, M.L. _______.

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.KEEPING FIT Bodies are made to move! They are not (31) for sitting around in front of the television or reading magazines. Keeping fit doesn't mean have to be a super-athlete, and even (32) exercise can give you a lot of fun. When you are fit and healthy, you will find you look better and feel better. You will develop more energy and self-confidence.Every time you move, you are exercising. The human body is designed to bend, stretch, run, jump and climb. (33) it does, the stronger and fitter it will become. Best of all, exercise is fun. It's what your body likes doing most-keeping on the move.Physical exercise is not only good for your body. People who take regular exercise are usually happier, more relaxed and more alert than people who sit around all day. Try an experiment-next time you are in a bad mood, go for a walk or play a ball game in the park. See how much better you feel after an hour. A good (34) of achievement is yet another benefit of exercise. People feel good about themselves when they know they have improved their fitness. People who exercise regularly will tell you that they find they have more energy to enjoy life. So have (35) you'll soon see and feel the benefitsĐiền vào ô 31

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TÍNH CHẤT HÓA HỌC CỦA CACBOHIĐRAT

Cho sơ đồ phản ứng :(a) X + H2O →xt Y(b) Y + AgNO3 + NH3 + H2O ® amoni gluconat + Ag + NH4NO3(c) Y →xt E + Z(d) Z + H2O →as diep luc X + GX, Y, Z lần lượt là :

Hóa học Lớp 11

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

She doesn't want to go to their party. We don't want to go either

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P4)

The winds were very strong. The trees were uprooted

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20 đề thi thử THPTQG môn Sinh học năm 2019 - 2020 (Đề số 11)

Cônsixin là hóa chất gây đột biến không tác động vào giai đoạn nào sau đây của quá trình phân bào?1. Kì sau, khi các NST trong cặp tương đồng phân ly về hai cực của tế bào và bắt đầu giãn xoắn.2. Kì giữa, khi các NST liên kết với các thoi vô sắc và di chuyển về mặt phẳng phân chia tế bào.3. Kì đầu, khi màng nhân tan rã, NST bắt đầu co xoắn và các thoi vô sắc được hình thành.4. Kì cuối, khi thoi vô sắc tan rã, màng nhân mới hình thành và tế bào mẹ phân chia thành các tế bào con.

Sinh học Tốt nghiệp THPT

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TÍNH CHẤT HÓA HỌC CỦA CACBOHIĐRAT

Chọn những câu đúng trong các câu sau :(1) Xenlulozơ không phản ứng với Cu(OH)2 nhưng tan được trong dung dịch [Cu(NH3)4](OH)2.(2) Glucozơ được gọi là đường mía.(3) Dẫn khí H2 vào dung dịch glucozơ, đun nóng, xúc tác Ni thu được poliancol.(4) Glucozơ được điều chế bằng cách thủy phân tinh bột nhờ xúc tác HCl hoặc enzim.(5) Dung dịch saccarozơ không có phản ứng tráng Ag, chứng tỏ phân tử saccarozơ không có nhóm –CHO.(6) Saccarozơ thuộc loại đisaccarit có tính oxi hóa và tính khử.(7) Tinh bột là hỗn hợp của 2 polisaccarit là amilozơ và amilopectin.

Hóa học Lớp 11

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Lớp 12

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Ôn vào 6

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Mark the letter A, B, C, D on your answer sheet to indicate the word whose underline is pronounced differently from the rest

Mark the letter A, B, C, D on your answer sheet to indicate the word whose underline is pronounced differently from the rest.

Mark the letter A, B, C, D on your answer sheet to indicate the word that differs from the rest in the position of the main stress

Mark the letter A, B, C, D on your answer sheet to indicate the word that differs from the rest in the position of the main stress

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions

Hòa tan hết 21,52 gam hỗn hợp X gồm Fe, FeO và Fe3O4 trong dung dịch HNO3 loãng dư, thu được dung dịch X chứa m gam muối và 4,704 lít khí NO (sản phẩm khử duy nhất). Giá trị của m là?

Hòa tan hết 15,6 gam hỗn hợp X gồm Fe và Fe3O4 trong dung dịch HNO3 loãng dư, thu được dung dịch X chứa 50,82 gam muối và khí NO (sản phẩm khử duy nhất). Phần trăm khối lượng của Fe trong X là?

Hòa tan hết 13,12 gam hỗn hợp gồm Fe và Fe3O4 trong dung dịch HNO3 loãng dư, thu được dung dịch X chứa 48,4 gam muối và a mol khí NO (sản phẩm khử duy nhất). Giá trị của a là.

Lên men 360 gam glucozơ với hiệu suất phản ứng là 80% thu được V ml C2H5OH 46o (khối lượng riêng của C2H5OH là 0,8 gam/ml). Giá trị của V là

Cho sơ đồ chuyển đổi sau (E, Q, X, Y, Z là hợp chất hữu cơ, mỗi mũi tên biểu thị một phản ứng hoá học) :Công thức của E, Q, X, Y, Z phù hợp với sơ đồ trên lần lượt là

Cho các chuyển hoá sau : (1) X + H2O →to xt Y (2) Y + H2 →to Ni Sobitol (3) Y + 2AgNO3 + 3NH3 + H2O →to Amoni gluconat + 2Ag + NH4NO3 (4) Y →to xt E + Z (5) Z + H2O →as clorophin X + G X, Y và Z lần lượt là :

Cho sơ đồ phản ứng :(a) X + H2O →xt Y(b) Y + AgNO3 + NH3 + H2O ® amoni gluconat + Ag + NH4NO3(c) Y →xt E + Z(d) Z + H2O →as diep luc X + GX, Y, Z lần lượt là :

She doesn't want to go to their party. We don't want to go either

The winds were very strong. The trees were uprooted

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