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Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 3)

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks.Air  pollution  occurs  when  wastes  dirty  the  air.  People  produce  most  of  the  (44)  ______  that  cause  air pollution.  Such  wastes  can  be  in  the  form  of  gases  or  particles  of  solid  or  liquid  matter.  These  substances result chiefly from burning (45) _______ to power motor vehicles and to heat buildings. Industrial processes and the (46) _______ of garbage also contribute to air pollution. Natural pollutants (impurities) include dust, pollen, soil particles, and naturally occurring gases.      The  rapid  growth  of  population  and  industry  and  the  increasing  use  of  automobiles  and  airplanes  have made air pollution a (47) _______ problem. The air we breathe has become so filled with pollutants that it can cause (48) _______ problems. Polluted air also harms plants, animals, building materials, and fabrics. In addition, it causes damage by altering the earth’s atmosphere.Điền ô số 44

Tiếng Anh Tốt nghiệp THPT
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30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 26)

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.Rachel Carson was born in 1907 in Springsdale, Pennsylvania. She studied biology at college and zoology at Johns Hopkins University, where she received her master’s degree in 1933. In 1936, she was hired by the U.S. Fish and Wildlife Service, where she worked most of her life.Carson’s first book, Under the Sea Wind, was published in 1941. It received excellent reviews, but sales were poor until it was reissued in 1952. In that year she published The Sea Around Us, which provided a fascinating look beneath the ocean’s surface, emphasizing human history as well as geology and marine biology. Her imagery and language had a poetic quality. Carson consulted no less than 1,000 printed sources. She had voluminous correspondence and frequent discussions with experts in the field. However, she always realized the limitations of her nontechnical readers.In 1962, Carson published Silent Spring, a book that sparked considerable controversy. It proved how much harm was done by the uncontrolled, reckless use of insecticides. She detailed how they poison the food supply of animals, kill birds and fish, and contaminate human food. At the time, spokesmen for the chemical industry mounted personal attacks against Carson and issued propaganda to indicate that her findings were flawed. However, her work was proved by a 1963 report of the President’s Science Advisory Committee.(Source: TOEFL Reading) Which of the following words or phrases is LEAST accurate in describing The Sea Around Us?  

Tiếng Anh Tốt nghiệp THPT
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Đề luyện thi THPT Quốc Gia - Năm 2020 Môn thi: TIẾNG ANH (Đề số 3)

Read the following text then answer the questions that followed by circling its corresponding letter marked A, B, C or D from 43 to 50. Since water is the basis of life, composing the greater part of the tissues of all living things, the crucial problem of desert animals is to survive in a world where sources of flowing water are rare. And since man’s inexorable necessity is to absorb large quantities of water at frequent intervals, he can scarcely comprehend that many creatures of the desert pass their entire lives without a single drop. Uncompromising as it is, the desert has not a limited life but only those forms unable to withstand its desiccating effects. No moist skinned, water-loving animals can exist there. Few large animals are found. The giants of the North American desert are the deer, the coyote, and the bobcat. Since desert country is open, it holds more swift-footed running and leaping creatures than the tangled forest. Its population is largely nocturnal, silent, filled with reticence, and ruled by stealth. Yet they are not emaciated. Having adapted to their austere environment, they are as healthy as animals anywhere else in the world. The secret of their adjustment lies in the combination of behavior and physiology. None could survive, like mad dogs and Englishmen, if they went out in the midday sun, many would die in a matter of minutes. So most of them pass the burning hours asleep in cool, humid burrows underneath the ground, emerging to hunt only by night. The surface of the sun-baked desert averages around 150 degrees, but 18 inches down the temperature is only 60 degrees.The author mentions all the following as examples of the behavior of desert animals EXCEPT _______.

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions.The lost hikers stayed alive by eating wild berries and drinking spring water

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Tiếng Anh Tốt nghiệp THPT
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BÀI TẬP LÝ THUYẾT

Thí nghiệm xảy ra ăn mòn điện hóa học là

Hóa học Lớp 12
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30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 26)

Which of the following was NOT mentioned in the passage as a source of information for The Sea Around Us?

Tiếng Anh Tốt nghiệp THPT
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BÀI TẬP LÝ THUYẾT

Thực hiện các thí nghiệm sau:1.        Nhúng thanh Fe nguyên chất vào dung dịch CuSO4.2.        Nhúng thanh Fe nguyên chất vào dung dịch FeCl3.3.        Nhúng thanh Fe nguyên chất vào dung dịch H2SO4 loãng, có nhỏ vài giọt CuSO4.4.        Cho dung dịch Fe(NO3)2 vào dung dịch AgNO3.5.        Để thanh thép ngoài không khí ẩm.Số trường hợp kim loại bị ăn mòn chủ yếu theo ăn mòn điện hóa là:

Hóa học Lớp 12
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Đề luyện thi THPT Quốc Gia - Năm 2020 Môn thi: TIẾNG ANH (Đề số 3)

Read the following text then answer the questions that followed by circling its corresponding letter marked A, B, C or D from 43 to 50. Since water is the basis of life, composing the greater part of the tissues of all living things, the crucial problem of desert animals is to survive in a world where sources of flowing water are rare. And since man’s inexorable necessity is to absorb large quantities of water at frequent intervals, he can scarcely comprehend that many creatures of the desert pass their entire lives without a single drop. Uncompromising as it is, the desert has not a limited life but only those forms unable to withstand its desiccating effects. No moist skinned, water-loving animals can exist there. Few large animals are found. The giants of the North American desert are the deer, the coyote, and the bobcat. Since desert country is open, it holds more swift-footed running and leaping creatures than the tangled forest. Its population is largely nocturnal, silent, filled with reticence, and ruled by stealth. Yet they are not emaciated. Having adapted to their austere environment, they are as healthy as animals anywhere else in the world. The secret of their adjustment lies in the combination of behavior and physiology. None could survive, like mad dogs and Englishmen, if they went out in the midday sun, many would die in a matter of minutes. So most of them pass the burning hours asleep in cool, humid burrows underneath the ground, emerging to hunt only by night. The surface of the sun-baked desert averages around 150 degrees, but 18 inches down the temperature is only 60 degrees.The phrase “those forms” in the passage refers to all of the followings EXCEPT___________.

Tiếng Anh Tốt nghiệp THPT
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BÀI TẬP LÝ THUYẾT

Trong các phản ứng sau phản ứng nào được xem là phương pháp nhiệt luyện dùng để điều chế kim loại.

Hóa học Lớp 12
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KỲ THI THỬ THPT QUỐC GIA NĂM 2019 MÔN TIẾNG ANH(P12)

We arranged to meet at the station, but she didn’t___________.

Tiếng Anh Tốt nghiệp THPT
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Bài tập kết hợp thủy phân este và đốt cháy

Hỗn hợp E gồm hai este là đồng phân cấu tạo. Đốt cháy hoàn toàn 33,3 gam E, thu được 30,24 lít khí CO2 (đktc) và 24,3 gam H2O. Đun nóng 33,3 gam E với 300 mL dung dịch NaOH 2M đến phản ứng hoàn toàn; cô cạn dung dịch sau phản ứng, thu được 38,7 gam chất rắn khan T. Đốt cháy toàn bộ T bằng khí O2 dư, thu số mol CO2 và số mol H2O theo tỉ lệ số mol tương ứng là

Hóa học Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 322 lượt xem 6 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 25

Tiếng Anh Tốt nghiệp THPT
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30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 26)

It can be inferred from the passage that in 1952, Carson’s book Under the Sea Wind

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 386 lượt xem 6 năm trước
Đề luyện thi THPT Quốc Gia - Năm 2020 Môn thi: TIẾNG ANH (Đề số 3)

Read the following text then answer the questions that followed by circling its corresponding letter marked A, B, C or D from 43 to 50. Since water is the basis of life, composing the greater part of the tissues of all living things, the crucial problem of desert animals is to survive in a world where sources of flowing water are rare. And since man’s inexorable necessity is to absorb large quantities of water at frequent intervals, he can scarcely comprehend that many creatures of the desert pass their entire lives without a single drop. Uncompromising as it is, the desert has not a limited life but only those forms unable to withstand its desiccating effects. No moist skinned, water-loving animals can exist there. Few large animals are found. The giants of the North American desert are the deer, the coyote, and the bobcat. Since desert country is open, it holds more swift-footed running and leaping creatures than the tangled forest. Its population is largely nocturnal, silent, filled with reticence, and ruled by stealth. Yet they are not emaciated. Having adapted to their austere environment, they are as healthy as animals anywhere else in the world. The secret of their adjustment lies in the combination of behavior and physiology. None could survive, like mad dogs and Englishmen, if they went out in the midday sun, many would die in a matter of minutes. So most of them pass the burning hours asleep in cool, humid burrows underneath the ground, emerging to hunt only by night. The surface of the sun-baked desert averages around 150 degrees, but 18 inches down the temperature is only 60 degrees.Man can hardly understand why many animals live their whole life in the desert, as __________.

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 24

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 23

Tiếng Anh Tốt nghiệp THPT
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BÀI TẬP LÝ THUYẾT

Tiến hành các thí nghiệm sau:(a)     Điện phân dung dịch AlCl3.(b)    Điện phân dung dịch CuSO4.(c)     Điện phân nóng chảy NaCl.(d)    Cho luồng khí CO qua bột Al2O3 nung nóng.(e)     Cho AgNO3 dư vào dung dịch FeCl2.(f)      Cho luồng khí NH3 qua CuO nung nóng.Số thí nghiệm sau khi kết thúc phản ứng tạo sản phẩm có chứa kim loại là:

Hóa học Lớp 12
Xem chi tiết 423 lượt xem 6 năm trước
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 26)

When she published her first book, Carson was closest to the age of 

Tiếng Anh Tốt nghiệp THPT
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BÀI TẬP LÝ THUYẾT

Trong các phát biểu sau:(1)           Theo chiều tăng dần điện tích hạt nhân, các kim loại kiềm thổ (từ Be đến Ba) có nhiệt độ nóng chảy giảm dần.(2)           Kim loại Mg có kiểu mạng tinh thể lập phương tâm diện.(3)           Các kim loại Na, Ba, Be đều tác dụng với nước ở nhiệt độ thường.(4)           Kim loại Mg tác dụng với hơi nước ở nhiệt độ cao.(5)           Trong công nghiệp, kim loại Al được điều chế bằng phương pháp điện phân Al2O3 nóng chảy.(6)           Kim loại Al tan được trong dung dịch HNO3 đặc, nguội.Số phát biểu đúng là

Hóa học Lớp 12
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 22

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 21

Tiếng Anh Tốt nghiệp THPT
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Bài tập kết hợp thủy phân este và đốt cháy

Thủy phân hoàn toàn m gam hỗn hợp gồm hai este đơn chức bằng lượng vừa đủ dung dịch KOH. Cô cạn dung dịch sau phản ứng, thu được ancol X và hỗn hợp Y gồm hai muối của hai axit hữu cơ. Đốt cháy toàn bộ X, thu được 11,2 lít khí CO2 (đktc) và 13,5 gam H2O. Nung nóng Y với lượng dư NaOH rắn (có mặt CaO), thu được 5,82 gam hai hiđrocacbon đồng đẳng kế tiếp. Giá trị của m là

Hóa học Tốt nghiệp THPT
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BÀI TẬP LÝ THUYẾT

Trong quá trình điện phân dung dịch KCl, quá trình nào sau đây xảy ra ở cực dương (anot)

Hóa học Lớp 12
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Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (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.Rain forests cover less than six percent of the earth’s area, but they have 100,000 kinds of all the kinds of plants on the earth. Three-fourths of known kinds of plants and animals call the rain forest their home. Twenty percent of our different kinds of medicine comes from rain forests. The glues on an envelope and in shoes come from tropical plants. Rain forests provide materials for hundreds of other products.Rain forests are also very important to the world’s climate. The Amazon rain forest alone receives about thirty to forty percent of the total rainfall on the earth and products about the same percentage of the world oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.Saving rain forests is an international problem. One country, or even a few countries, cannot solve the problem alone. The nations of the world must work together to find a solution before it is too late.According to the passage, what must the nations of the world do to find a solution?

Tiếng Anh Tốt nghiệp THPT
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30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 26)

According to the passage, what did Carson primarily study at Johns Hopkins University?

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 20

Tiếng Anh Tốt nghiệp THPT
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BÀI TẬP LÝ THUYẾT

Điều nào là không đúng trong các điều sau:

Hóa học Lớp 12
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Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (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.Rain forests cover less than six percent of the earth’s area, but they have 100,000 kinds of all the kinds of plants on the earth. Three-fourths of known kinds of plants and animals call the rain forest their home. Twenty percent of our different kinds of medicine comes from rain forests. The glues on an envelope and in shoes come from tropical plants. Rain forests provide materials for hundreds of other products.Rain forests are also very important to the world’s climate. The Amazon rain forest alone receives about thirty to forty percent of the total rainfall on the earth and products about the same percentage of the world oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.Saving rain forests is an international problem. One country, or even a few countries, cannot solve the problem alone. The nations of the world must work together to find a solution before it is too late.According to some scientists, what will the decreasing size of rain forests affect on the earth?

Tiếng Anh Tốt nghiệp THPT
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KỲ THI THỬ THPT QUỐC GIA NĂM 2019 MÔN TIẾNG ANH(P12)

Safety should take _________over all other matters in the workplace

Tiếng Anh Tốt nghiệp THPT
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Đề luyện thi THPT Quốc Gia - Năm 2020 Môn thi: TIẾNG ANH (Đề số 3)

Read the following text then answer the questions that followed by circling its corresponding letter marked A, B, C or D from 43 to 50. Since water is the basis of life, composing the greater part of the tissues of all living things, the crucial problem of desert animals is to survive in a world where sources of flowing water are rare. And since man’s inexorable necessity is to absorb large quantities of water at frequent intervals, he can scarcely comprehend that many creatures of the desert pass their entire lives without a single drop. Uncompromising as it is, the desert has not a limited life but only those forms unable to withstand its desiccating effects. No moist skinned, water-loving animals can exist there. Few large animals are found. The giants of the North American desert are the deer, the coyote, and the bobcat. Since desert country is open, it holds more swift-footed running and leaping creatures than the tangled forest. Its population is largely nocturnal, silent, filled with reticence, and ruled by stealth. Yet they are not emaciated. Having adapted to their austere environment, they are as healthy as animals anywhere else in the world. The secret of their adjustment lies in the combination of behavior and physiology. None could survive, like mad dogs and Englishmen, if they went out in the midday sun, many would die in a matter of minutes. So most of them pass the burning hours asleep in cool, humid burrows underneath the ground, emerging to hunt only by night. The surface of the sun-baked desert averages around 150 degrees, but 18 inches down the temperature is only 60 degrees.The word “tissues” in the passage mostly means _______.

Tiếng Anh Tốt nghiệp THPT
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BÀI TẬP LÝ THUYẾT

Phản ứng điện phân nóng chảy nào dưới đây bị viết sai sản phẩm?

Hóa học Lớp 12
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Đề luyện thi THPT quốc gia môn tiếng anh có lời giải (Đề số 04)

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 ô số 50

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (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.Rain forests cover less than six percent of the earth’s area, but they have 100,000 kinds of all the kinds of plants on the earth. Three-fourths of known kinds of plants and animals call the rain forest their home. Twenty percent of our different kinds of medicine comes from rain forests. The glues on an envelope and in shoes come from tropical plants. Rain forests provide materials for hundreds of other products.Rain forests are also very important to the world’s climate. The Amazon rain forest alone receives about thirty to forty percent of the total rainfall on the earth and products about the same percentage of the world oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.Saving rain forests is an international problem. One country, or even a few countries, cannot solve the problem alone. The nations of the world must work together to find a solution before it is too late.What percent of the total rainfall on the earth does the Amazon rain forests receive?

Tiếng Anh Tốt nghiệp THPT
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Bộ đề luyện thi THPTQG Hóa Học cực hay có lời giải chi tiết (Đề số 9)

Cho các phát biểu sau:(a) Anbunin là protein hình cầu, không tan trong nuớc.(b) Animoaxit là hợp chất hữu cơ tạp chức.(c) Saccarozo thuộc loại đisaccarit.(d) Công thức tổng quát của amin no, mạch hở đơn chức là CnH2n+3N.(e) Tất cả các peptit đều có phản ứng với Cu(OH)2 tạo hợp chất màu tím.(f) Trong phân tử tetrapeptit mạch hở có 3 liên kết peptit.(g) Lực bazơ của metylamin mạnh hơn đimetylamin.Số phát biểu đúng là

Hóa học Tốt nghiệp THPT
Xem chi tiết 478 lượt xem 6 năm trước
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 26)

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.Rachel Carson was born in 1907 in Springsdale, Pennsylvania. She studied biology at college and zoology at Johns Hopkins University, where she received her master’s degree in 1933. In 1936, she was hired by the U.S. Fish and Wildlife Service, where she worked most of her life.Carson’s first book, Under the Sea Wind, was published in 1941. It received excellent reviews, but sales were poor until it was reissued in 1952. In that year she published The Sea Around Us, which provided a fascinating look beneath the ocean’s surface, emphasizing human history as well as geology and marine biology. Her imagery and language had a poetic quality. Carson consulted no less than 1,000 printed sources. She had voluminous correspondence and frequent discussions with experts in the field. However, she always realized the limitations of her nontechnical readers.In 1962, Carson published Silent Spring, a book that sparked considerable controversy. It proved how much harm was done by the uncontrolled, reckless use of insecticides. She detailed how they poison the food supply of animals, kill birds and fish, and contaminate human food. At the time, spokesmen for the chemical industry mounted personal attacks against Carson and issued propaganda to indicate that her findings were flawed. However, her work was proved by a 1963 report of the President’s Science Advisory Committee.(Source: TOEFL Reading)The passage mainly discusses Rachel Carson’s work 

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 19

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 18

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (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.Rain forests cover less than six percent of the earth’s area, but they have 100,000 kinds of all the kinds of plants on the earth. Three-fourths of known kinds of plants and animals call the rain forest their home. Twenty percent of our different kinds of medicine comes from rain forests. The glues on an envelope and in shoes come from tropical plants. Rain forests provide materials for hundreds of other products.Rain forests are also very important to the world’s climate. The Amazon rain forest alone receives about thirty to forty percent of the total rainfall on the earth and products about the same percentage of the world oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.Saving rain forests is an international problem. One country, or even a few countries, cannot solve the problem alone. The nations of the world must work together to find a solution before it is too late.How many known kinds of plants and animals call the rain forests their home?

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 1.2 K lượt xem 6 năm trước
Bài tập kết hợp thủy phân este và đốt cháy

Hỗn hợp E gồm hai este đơn chức, là đồng phân cấu tạo và đều chứa vòng benzen. Đốt cháy hoàn toàn m gam E cần vừa đủ 8,064 lít khí O2 (đktc), thu được 14,08 gam CO2 và 2,88 gam H2O. Đun nóng m gam E với dung dịch NaOH (dư) thì có tối đa 2,40 gam NaOH phản ứng, thu được dung dịch T chứa 5,32 gam ba muối và a gam ancol. Giá trị của a là

Hóa học Tốt nghiệp THPT
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KỲ THI THỬ THPT QUỐC GIA NĂM 2019 MÔN TIẾNG ANH(P12)

Joanne is criticising Alex for taking a late flight. Choose the most suitable response to fill in the blank in the following exchange.       Joanne: “You should have flown with the earlier flight!”              Alex: “___________________”

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 17

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 783 lượt xem 6 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P12)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.THE FIRST WOMAN SCIENTISTHypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16)          only   woman scientist to have a place in the history books.Hypatia's father was director of Alexandria University, and he (17)             sure his daughter had the best education available. This was unusual, as most women then had few (18)           to study.After studying in Athens and Rome, Hypatia returned to Alexandria (19)       she began teaching mathematics. She soon became famous (20)           her knowledge of new ideas.We have no copies of her book, (21)       we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22)       several scientific tools to help with her work. At the (23)       , many rulers were afraid of science, and (24)        connected with it was in danger. One day in March 415, Hypatia (25)           attacked in the street and killed.Điền vào ô 16

Tiếng Anh Tốt nghiệp THPT
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30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 26)

I'm so hungry. Let’s go and get__________to eat

Tiếng Anh Tốt nghiệp THPT
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Đề luyện thi THPT quốc gia môn tiếng anh có lời giải (Đề số 04)

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 ecosystemsĐiền ô số 49

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (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.Rain forests cover less than six percent of the earth’s area, but they have 100,000 kinds of all the kinds of plants on the earth. Three-fourths of known kinds of plants and animals call the rain forest their home. Twenty percent of our different kinds of medicine comes from rain forests. The glues on an envelope and in shoes come from tropical plants. Rain forests provide materials for hundreds of other products.Rain forests are also very important to the world’s climate. The Amazon rain forest alone receives about thirty to forty percent of the total rainfall on the earth and products about the same percentage of the world oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.Saving rain forests is an international problem. One country, or even a few countries, cannot solve the problem alone. The nations of the world must work together to find a solution before it is too late.What percent of the earth’s area do rain forests cover?

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 2.2 K lượt xem 6 năm trước
Đề luyện thi THPT Quốc Gia - Năm 2020 Môn thi: TIẾNG ANH (Đề số 3)

Read the following text then answer the questions that followed by circling its corresponding letter marked A, B, C or D from 43 to 50. Since water is the basis of life, composing the greater part of the tissues of all living things, the crucial problem of desert animals is to survive in a world where sources of flowing water are rare. And since man’s inexorable necessity is to absorb large quantities of water at frequent intervals, he can scarcely comprehend that many creatures of the desert pass their entire lives without a single drop. Uncompromising as it is, the desert has not a limited life but only those forms unable to withstand its desiccating effects. No moist skinned, water-loving animals can exist there. Few large animals are found. The giants of the North American desert are the deer, the coyote, and the bobcat. Since desert country is open, it holds more swift-footed running and leaping creatures than the tangled forest. Its population is largely nocturnal, silent, filled with reticence, and ruled by stealth. Yet they are not emaciated. Having adapted to their austere environment, they are as healthy as animals anywhere else in the world. The secret of their adjustment lies in the combination of behavior and physiology. None could survive, like mad dogs and Englishmen, if they went out in the midday sun, many would die in a matter of minutes. So most of them pass the burning hours asleep in cool, humid burrows underneath the ground, emerging to hunt only by night. The surface of the sun-baked desert averages around 150 degrees, but 18 inches down the temperature is only 60 degrees.The title for this passage could be _______.

Tiếng Anh Tốt nghiệp THPT
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KỲ THI THỬ THPT QUỐC GIA NĂM 2019 MÔN TIẾNG ANH(P12)

Family_________later took on a much greater significance in his life

Tiếng Anh Tốt nghiệp THPT
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BÀI TẬP LÝ THUYẾT

Khi điện phân hỗn hợp dung dịch NaCl và CuSO4, nếu dung dịch sau khi điện phân hoà tan được NaHCO3 thì sẽ xảy trường hợp nào sau đây:

Hóa học Lớp 12
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