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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 33 to 37. How can a person offend people just because they cross their legs? In Thailand, it is rude for a person to show other people the bottom of their feet. This is considered unclean, and Thais can (33) …………..serious offense at it. Another thing people do in the West is to touch people on the head especially children. It is very normal to see an old woman walking up to a young boy and (34) …………… his hair tenderly while saying what a handsome young man he is. In Thailand, touching a person’s head is strictly taboo because that is the (35) …………… part of the body, and it is where the (36) ……………. is thought to reside in a person. Although very close family members might touch a child on the head, even this is considered rude after a child grows up. In the Middle East and some parts of Asia, the left hand is used to wash oneself after using a toilet. (37) ………….., the left hand can never offered to another person or used to eat with. Food must always be passed with the right hand, and it is considered polite to always use the right hand for social interactions.Điền vào ô 36

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 following passage and mark the letter A, B, C ,or D on your answer sheet to indicate the correct answer for each of the questions.Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction.Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth.  The vapor of the evaporating pheromone over the trail guides an ant along the way, and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.According to the passage, the highest amount of pheromone vapor is found

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề ôn tập thi THPTQG môn Sinh Học có đáp án (Đề số 15)

Trong các phát biểu dưới đây, có bao nhiêu phát biểu đúng khi nói về hệ sinh thái?(1) Hệ sinh thái nhân tạo có độ đa dạng sinh học cao hơn so vói hệ sinh thái tự nhiên.(2) Một hệ nhân tạo là một hệ kín do có sự can thiệp của con người.(3) Hệ sinh thái tự nhiên là một hệ mở, tự điều chỉnh.(4) Dựa vào nguồn gốc để phân loại ta có hệ sinh thái tự nhiên và hệ sinh nhân tạo.

Sinh học 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 answer to each of the questions.Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives.Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings,  friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to  be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians,  and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.Learning is closely related to memory, which is the storage of information  in  the  brain.  Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result  of  a person’s experiences.There are many forms of learning, ranging from simple to complex. Simple forms  of  learning  involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skills. Getting married, raising children, and finding and keeping a job are mentioned in paragraph 2 as examples of               

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 following passage and mark the letter A, B, C ,or D on your answer sheet to indicate the correct answer for each of the questions.Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction.Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth.  The vapor of the evaporating pheromone over the trail guides an ant along the way, and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.The word “oscillating“ in line 17 is closest in meaning to

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

Read the following passage and mark the letter A, B , C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.Speech is one of the most important (13) ______ communicating. It consists of far more than just making noises. To talk and also to (14) ______ by other people, we have to speak a language, that is, we have to use combinations of (15) ______ that everyone agrees to stand for a particular object or idea. Communication would be impossible if everyone made up their own language.Learning a language properly is very (16)______ . The basic (17) ______ of English is not very large, and not only about 2,000 words are needed to speak it quite (18)______. But the more idea you can (19) ______ the more precise you can be about their exact meaning.Words are the (20) ______ thing we use in communicating what we want to say. The way we (21)______ the words is also very important. Our tone of voice can express many emotions and (22) ______ whether we are pleasedor angry, for instanceĐiền vào ô 14

Tiếng Anh Tốt nghiệp THPT
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BÀI TOÁN VỀ PHẢN ỨNG ĐỐT CHÁY ESTE

Đốt cháy hoàn toàn m gam hỗn hợp X gồm hai este đồng phân cần dùng 27,44 lít khí O2, thu được 23,52 lít khí CO2và 18,9 gam H2O. Nếu cho m gam X tác dụng hết với 450 ml dung dịch NaOH 1M, cô cạn dung dịch sau phản ứng thì thu được 28,5 gam chất rắn khan, trong đó có a mol muối Y và b mol muối Z MY<MZ. Các thể tích khí đều đo ở điều kiện tiêu chuẩn. Tỉ lệ a : b 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 answer to each of the questions.Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives.Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings,  friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to  be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians,  and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.Learning is closely related to memory, which is the storage of information  in  the  brain.  Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result  of  a person’s experiences.There are many forms of learning, ranging from simple to complex. Simple forms  of  learning  involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skills. According to the passage, what are children NOT usually taught outside the classroom?

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 following passage and mark the letter A, B, C ,or D on your answer sheet to indicate the correct answer for each of the questions.Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction.Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth.  The vapor of the evaporating pheromone over the trail guides an ant along the way, and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.According to the passage, how are ants guided by trail pheromones?

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

Cho hợp chất hữu cơ E (C6H10O5, mạch hở) phản ứng với dung dịch NaOH dư, thu được ancol T và m gam muối của một axit cacboxylic G (T và G chỉ chứa một loại nhóm chức). Đốt cháy hoàn toàn T, thu được 0,3 mol CO2 và 0,4 mol H2O. Giá trị của m là

Hóa học 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 33 to 37. How can a person offend people just because they cross their legs? In Thailand, it is rude for a person to show other people the bottom of their feet. This is considered unclean, and Thais can (33) …………..serious offense at it. Another thing people do in the West is to touch people on the head especially children. It is very normal to see an old woman walking up to a young boy and (34) …………… his hair tenderly while saying what a handsome young man he is. In Thailand, touching a person’s head is strictly taboo because that is the (35) …………… part of the body, and it is where the (36) ……………. is thought to reside in a person. Although very close family members might touch a child on the head, even this is considered rude after a child grows up. In the Middle East and some parts of Asia, the left hand is used to wash oneself after using a toilet. (37) ………….., the left hand can never offered to another person or used to eat with. Food must always be passed with the right hand, and it is considered polite to always use the right hand for social interactions.Điền vào ô 35

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 following passage and mark the letter A, B, C ,or D on your answer sheet to indicate the correct answer for each of the questions.Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction.Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth.  The vapor of the evaporating pheromone over the trail guides an ant along the way, and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.The author mentions the trail pheromone of the leafcutter ant in line 11 to point out

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề ôn tập thi THPTQG môn Sinh Học có đáp án (Đề số 15)

Sự không phân li của NST giới tính ở ruồi giấm đực xảy ra ở lần phân bào 2 giảm phân ở một tế bào sinh tinh sẽ tạo ra các loại tinh trùng

Sinh học 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 answer to each of the questions.Learning means acquiring knowledge or developing the ability to perform new behaviors. It is common to think of learning as something that takes place in school, but much of human learning occurs outside the classroom, and people continue to learn throughout their lives.Even before they enter school, young children learn to walk, to talk, and to use their hands to manipulate toys, food, and other objects. They use all of their senses to learn about the sights, sounds, tastes, and smells in their environments. They learn how to interact with their parents, siblings,  friends, and other people important to their world. When they enter school, children learn basic academic subjects such as reading, writing, and mathematics. They also continue to learn a great deal outside the classroom. They learn which behaviors are likely to be rewarded and which are likely to  be punished. They learn social skills for interacting with other children. After they finish school, people must learn to adapt to the many major changes that affect their lives, such as getting married, raising children, and finding and keeping a job.Because learning continues throughout our lives and affects almost everything we do, the study of learning is important in many different fields. Teachers need to understand the best ways to educate children. Psychologists, social workers, criminologists, and other human-service workers need to understand how certain experiences change people’s behaviors. Employers, politicians,  and advertisers make use of the principles of learning to influence the behavior of workers, voters, and consumers.Learning is closely related to memory, which is the storage of information  in  the  brain.  Psychologists who study memory are interested in how the brain stores knowledge, where this storage takes place, and how the brain later retrieves knowledge when we need it. In contrast, psychologists who study learning are more interested in behavior and how behavior changes as a result  of  a person’s experiences.There are many forms of learning, ranging from simple to complex. Simple forms  of  learning  involve a single stimulus. A stimulus is anything perceptible to the senses, such as a sight, sound, smell, touch, or taste. In a form of learning known as classical conditioning, people learn to associate two stimuli that occur in sequence, such as lightning followed by thunder. In operant conditioning, people learn by forming an association between a behavior and its consequences (reward or punishment). People and animals can also learn by observation - that is, by watching others perform behaviors. More complex forms of learning include learning languages, concepts, and motor skills. According to the passage, which of the following is learning in broad view comprised of?

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)

During the week of national tourism festival, we had visitors__________from all over the country.

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)

Hợp chất hữu cơ X có dạng CnHmO. Đốt cháy hết 0,04 mol X bằng 0,34 mol khí O2 thu đuọc 0,44 mol hỗn hợp gồm các khí và hơi. Mặt khác 0,05 mol X tác dụng với luợng dư dung dịch AgNO3 trong NH3 sau phản ứng hoàn toàn thu được khối lượng kết tủa vuợt quá 10,8 gam. số đồng phân cấu tạo của X là:

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

Mark the letter A, B, C or D on your answer sheet to indicate the word of phrase that is OPPOSITE in meaning to the underlined part in each of the following question.In most countries, compulsory military service doesn’t apply to women.

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 following passage and mark the letter A, B, C ,or D on your answer sheet to indicate the correct answer for each of the questions.Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction.Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth.  The vapor of the evaporating pheromone over the trail guides an ant along the way, and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.According to the passage, why do ants use different compounds as trail pheromones?

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 following passage and mark the letter A, B, C ,or D on your answer sheet to indicate the correct answer for each of the questions.Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction.Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth.  The vapor of the evaporating pheromone over the trail guides an ant along the way, and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.The phrase “the one” in line 8 refers to a single

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)

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

Your kitchen is fantastic! Did you do it all by yourself?’ Shaival: ‘No, I__________by aprofessional.’

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 33 to 37. How can a person offend people just because they cross their legs? In Thailand, it is rude for a person to show other people the bottom of their feet. This is considered unclean, and Thais can (33) …………..serious offense at it. Another thing people do in the West is to touch people on the head especially children. It is very normal to see an old woman walking up to a young boy and (34) …………… his hair tenderly while saying what a handsome young man he is. In Thailand, touching a person’s head is strictly taboo because that is the (35) …………… part of the body, and it is where the (36) ……………. is thought to reside in a person. Although very close family members might touch a child on the head, even this is considered rude after a child grows up. In the Middle East and some parts of Asia, the left hand is used to wash oneself after using a toilet. (37) ………….., the left hand can never offered to another person or used to eat with. Food must always be passed with the right hand, and it is considered polite to always use the right hand for social interactions.Điền vào ô 34

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề ôn tập thi THPTQG môn Sinh Học có đáp án (Đề số 15)

Ở một loài động vật, A nằm trên NST thường quy định lông màu đỏ trội hoàn toàn so với a quy định lông màu trắng. Kiểu gen AA làm cho hợp tử bị chết ở giai đoạn phôi. Cho các cá thể dị hợp giao phối tự do với nhau, tỉ lệ kiểu hình ở đời con sẽ là

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

Read the following passage and mark the letter A, B, C ,or D on your answer sheet to indicate the correct answer for each of the questions.Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction.Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth.  The vapor of the evaporating pheromone over the trail guides an ant along the way, and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.The word “intermittently” in line 4 is closest in meaning to

Tiếng Anh Tốt nghiệp THPT
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PHƯƠNG PHÁP NHIỆT LUYỆN

Hỗn hợp X gồm Al, Fe2O3, Fe3O4 và CuO trong đó oxi chiếm 25,39% khối lượng hỗn hợp. Cho m gam hỗn hợp X tác dụng với 8,96 lít CO (điều kiện tiêu chuẩn) sau một thời gian thu được chất rắn Y và hỗn hợp khí Z có tỉ khối so với hiđro là 19. Cho chất rắn Y tác dụng với dung dịch HNO3 loãng dư thu được dung dịch T và 7,168 lít NO (điều kiện tiêu chuẩn, sản phẩm khử duy nhất). Cô cạn dung dịch T thu được 3,456m gam muối khan. Giá trị của m gần với giá trị nào sau đây nhất?

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

Read the following passage and mark the letter A, B , C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.Speech is one of the most important (13) ______ communicating. It consists of far more than just making noises. To talk and also to (14) ______ by other people, we have to speak a language, that is, we have to use combinations of (15) ______ that everyone agrees to stand for a particular object or idea. Communication would be impossible if everyone made up their own language.Learning a language properly is very (16)______ . The basic (17) ______ of English is not very large, and not only about 2,000 words are needed to speak it quite (18)______. But the more idea you can (19) ______ the more precise you can be about their exact meaning.Words are the (20) ______ thing we use in communicating what we want to say. The way we (21)______ the words is also very important. Our tone of voice can express many emotions and (22) ______ whether we are pleasedor angry, for instanceĐiền vào ô 13

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 following passage and mark the letter A, B, C ,or D on your answer sheet to indicate the correct answer for each of the questions.Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail pheromone – a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction.Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram of this substance would suffice to lead a column of ants three times around Earth.  The vapor of the evaporating pheromone over the trail guides an ant along the way, and the ant detects this signal with receptors in its antennae. A trail pheromone will evaporate to furnish the highest concentration of vapor right over the trail, in what is called a vapor space. In following the trail, the ant moves to the right and left, oscillating from side to side across the line of the trail itself, bringing first one and then the other antenna into the vapor space. As the ant moves to the right, its left antenna arrives in the vapor space. The signal it receives causes it to swing to the left, and the ant then pursues this new course until its right antenna reaches the vapor space. It then swings back to the right, and so weaves back and forth down the trail.What does the passage mainly discuss?

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)

Traditionally, Americans and Asians have very different ideas__________love and marriage.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 459 lượt xem 5 năm trước
Tổng hợp đề ôn tập thi THPTQG môn Sinh Học có đáp án (Đề số 15)

Cho biết các gen phân li độc lập, thể tứ bội chỉ tạo giao tử 2n. Theo lí thuyết, có bao nhiêu phép lai sau đây tạo ra đời con có kiểu gen phân li theo tỉ lệ 1 : 2 : 1 : 1 : 2 : 1?(1) AAaaBbbb × AAaaBbbb.(2) AaaaBbbb × AAaaBbbb.(3) Aaaabbbb × AaaaBbbb.(4) AAAaBbbb × AaaaBBBB.(5) aaaaBbbb × AaaaBbbb.(6) AAAABbbb × AAaaBbbb.

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

Mark the letter A, B, C, or D on you answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.We cut down many forests. The Earth becomes hot

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)

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
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P11)

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose stress pattern is different from that of the rest in each of the following questions.

Tiếng Anh Tốt nghiệp THPT
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KỲ THI THỬ THPT QUỐC GIA NĂM 2019 MÔN TIẾNG ANH(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 408 lượt xem 5 năm trước
Bài tập kết hợp thủy phân este và đốt cháy

Hỗn hợp E gồm hai chất mạch hở là este X (no, tạo etylen glicol và hai axit caboxylic) và một axit cacboxylic (no, hai chức). Đốt cháy hoàn toàn 0,16 mol E, thu được 29,36 gam tổng khối lượng CO2 và H2O. Cho 21,5 gam E tác dụng hoàn toàn với dung dịch KOH vừa đủ, thu được 35,4 gam hỗn hợp muối. Công thức phân tử của X là

Hóa học 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 36,1 gam hợp chất hữu cơ X (có công thức hóa học C6H9O4Cl) tác dụng với dung dịch NaOH dư khi đun nóng nhẹ sau phản ứng hoàn toàn thu được các sản phẩm gồm: 0,4 mol muối Y; 0,2 mol C2H5OH và x mol NaCl. số nhóm -CH2- trong một phân tử X bằng

Hóa học 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 33 to 37. How can a person offend people just because they cross their legs? In Thailand, it is rude for a person to show other people the bottom of their feet. This is considered unclean, and Thais can (33) …………..serious offense at it. Another thing people do in the West is to touch people on the head especially children. It is very normal to see an old woman walking up to a young boy and (34) …………… his hair tenderly while saying what a handsome young man he is. In Thailand, touching a person’s head is strictly taboo because that is the (35) …………… part of the body, and it is where the (36) ……………. is thought to reside in a person. Although very close family members might touch a child on the head, even this is considered rude after a child grows up. In the Middle East and some parts of Asia, the left hand is used to wash oneself after using a toilet. (37) ………….., the left hand can never offered to another person or used to eat with. Food must always be passed with the right hand, and it is considered polite to always use the right hand for social interactions.Điền vào ô 33

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P11)

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose stress pattern is different from that of the rest in each of the following questions.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 864 lượt xem 5 năm trước
Đề luyện thi THPT quốc gia môn tiếng anh có lời giải (Đề số 04)

Mark the letter A, B, C, or D on you answer sheet to indicate the sentence that best combines each pair of sentences in the following questionsHe is very intelligent. He can solve all the problems in no time

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 477 lượt xem 5 năm trước
KỲ THI THỬ THPT QUỐC GIA NĂM 2019 MÔN TIẾNG ANH(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 639 lượt xem 5 năm trước
Tổng hợp đề thi thử THPT quốc gia môn tiếng anh có lời giải chi tiết (Đề số 3)

Mark the letter A, B, C or D on your answer sheet to indicate the word of phrase that is CLOSEST in meaning to the underlined part in each of the following question.Remember to bring letters of recommendation from your teachers.

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P11)

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions(A) To attract someone's attention (B) we can use either verbal (C) and non- verbal forms of (D) communication. 

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

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaningHad she read the reference books, she would have been able to finish the test.

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

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.This rapid transcontinental settlement and these new urban industrial circumstances of the last half of the 19th century were accompanied by the development of a national literature of great abundance and variety. New themes, new forms, new subjects, new regions, new authors, new audiences all emerged in the literature of this half century.As a result, at the onset of World War I, the spirit and substance of American literature had evolved remarkably, just as its center of production had shifted from Boston to New York in the late 1880s and the sources of its energy to Chicago and the Midwest. No longer was it produced, at least in its popular forms, in the main by solemn, typically moralistic men from New England and the Old South; no longer were polite, well-dressed, grammatically correct, middle-class young people the only central characters in its narratives; no longer were these narratives to be set in exotic places and remote times; no longer, indeed, were fiction, poetry, drama, and formal history the chief acceptable forms of literary expression; no longer, finally, was literature read primarily by young, middle class women.In sum, American literature in these years fulfilled in considerable measure the condition Walt Whitman called for in 1867 in describing Leaves of Grass: it treats, he said of his own major work, each state and region as peers "and expands from them, and includes the world ... connecting an American citizen with the citizens of all nations." At the same time, these years saw the emergence of what has been designated "the literature of argument," powerful works in sociology, philosophy, psychology, many of them impelled by the spirit of exposure and reform. Just as America learned to play a role in this half century as an autonomous international political, economic, and military power, so did its literature establish itself as a producer of major works.It can be inferred from the passage that Walt Whitman_____________

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề ôn tập thi THPTQG môn Sinh Học có đáp án (Đề số 15)

Trong những trường hợp dưới đây, số trường hợp đúng khi xem tính trội là trội không hoàn toàn:(1) Các con lai đồng loạt biểu hiện tính trạng trung gian giữa bố và mẹ thuần chủng tương phản khác nhau.(2) F1 tự thụ phấn cho con lai có tỉ lệ phân li kiểu gen và kiểu hình khác nhau.(3) F1 đem lai phân tích cho con lai có tỉ lệ phân li kiểu hình 1 trung gian : 1 lặn.(4) F2 có 3 loại kiểu hình phân li theo tỉ lệ 1 : 2 : 1.(5) Trên cơ thể F1 biểu hiện đồng thời cả kiểu hình của mẹ và kiểu hình của bố.

Sinh học 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)

If she__________a car, she would go out in the evening.

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)

Mark the letter A, B, C or D on your answer sheet to indicate the word of phrase that is CLOSEST in meaning to the underlined part in each of the following question.You shouldn’t wear casual clothes to an interview

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

Mark the letter A, B, C or D to indicate the sentence that is closest in meaning to each of the following questions.As he gets older, he wants to travel less.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 56.7 K lượt xem 5 năm trước
Đề luyện thi THPT quốc gia môn tiếng anh có lời giải (Đề số 04)

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning“I will pay back the money, Gloria.” Said Ivan

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 1.6 K lượt xem 5 năm trước
KỲ THI THỬ THPT QUỐC GIA NĂM 2019 MÔN TIẾNG ANH(P12)

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.This rapid transcontinental settlement and these new urban industrial circumstances of the last half of the 19th century were accompanied by the development of a national literature of great abundance and variety. New themes, new forms, new subjects, new regions, new authors, new audiences all emerged in the literature of this half century.As a result, at the onset of World War I, the spirit and substance of American literature had evolved remarkably, just as its center of production had shifted from Boston to New York in the late 1880s and the sources of its energy to Chicago and the Midwest. No longer was it produced, at least in its popular forms, in the main by solemn, typically moralistic men from New England and the Old South; no longer were polite, well-dressed, grammatically correct, middle-class young people the only central characters in its narratives; no longer were these narratives to be set in exotic places and remote times; no longer, indeed, were fiction, poetry, drama, and formal history the chief acceptable forms of literary expression; no longer, finally, was literature read primarily by young, middle class women.In sum, American literature in these years fulfilled in considerable measure the condition Walt Whitman called for in 1867 in describing Leaves of Grass: it treats, he said of his own major work, each state and region as peers "and expands from them, and includes the world ... connecting an American citizen with the citizens of all nations." At the same time, these years saw the emergence of what has been designated "the literature of argument," powerful works in sociology, philosophy, psychology, many of them impelled by the spirit of exposure and reform. Just as America learned to play a role in this half century as an autonomous international political, economic, and military power, so did its literature establish itself as a producer of major works.The author uses the word “indeed” in the second paragraph for what purpose?

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)

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 1.9 K lượt xem 5 năm trước
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