Danh sách câu hỏi ( Có 86,238 câu hỏi trên 1,725 trang )

Read the passage, then choose the best answer by circling the letter A, B, C or D ( 15p ): In the very distant geological past, all animals were aquatic. The very first vertebrates or animals with backbones, of which we have any fossil record, lived in water. These vertebrates, the fish, were adapted to underwater living. Their streamlined bodies were covered with scales to reduce surface friction: they had muscular tails so that they could swim swiftly in such a dense medium as water; and they were endowed with gills for breathing underwater.   Descendants of fish-type ancestors crossed the seashore barrier and accommodated themselves to life on land. As amphibians, they possessed limbs instead of fins and lungs instead of gills. But they never became completely free of the bonds that tied them to the water; even today many amphibians return to the water to lay their eggs.   Millions of years after the first clumsy amphibians crawled over the land, newer types of land dwellers appeared, these animals give rise to the present-day reptiles and mammals. They were completely converted for land dwelling, with bodies and biological activities far different from those of fish. With these special adaptations, mammals have been able to colonize the woods and meadows, the deserts and high mountains, often far removed from the sea.   In converting to land life, animals acquired………….. 

Xem chi tiết 751 lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.   What might be inferred about radar?  

Xem chi tiết 2.2 K lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.   Which of the following would most likely be the topic of the next paragraph?  

Xem chi tiết 1.6 K lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.  The word “tracking” in the passage most closely means _______.  

Xem chi tiết 1.5 K lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.  Which type of waves does radar use?  

Xem chi tiết 865 lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.   According to the passage, the distance between a radar set and an object can be determined by _______.  

Xem chi tiết 1.5 K lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.  Which of the following words best describes the tone of this passage?  

Xem chi tiết 845 lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.   The word “shouts” in the passage most closely means _______.  

Xem chi tiết 1.3 K lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.   The word “exemplified” in the passage can be replaced by _______.  

Xem chi tiết 1.2 K lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.  According to the passage, what can radar detect besides location of objects?  

Xem chi tiết 2.5 K lượt xem 5 năm trước

Read the passage and choose the best answer.A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.   What is the main topic of this passage?  

Xem chi tiết 1 K lượt xem 5 năm trước

Fill in each numbered blank with one suitable word or phrase.A thirteen-year-old does not spend as much money as his parents suspect - at least not (1) ………….the findings of recent survey, Money and Change. The survey (2) ……….. three hundred teenagers, 13-17 years old from (3) …………. Britain.By the time they (4) ………… their teens, most children see their weekly allowance rise dramatically to an amazing national average of $5.14. Two thirds think they get (5) …………. money but most expect to have to do something to get it.Although they have more cash, worry about debt is (6) ………….. among teenagers. Therefore, the majority of children make an effort to save for the future.Greater access to cash (7) ……………. teenagers does not, however, mean that they are more irresponsible as a result. The economic recession seems to have encouraged cautious attitudes to money, even in the case of children at these ages. Instead of wasting what pocket (8) …………… they have on sweets or magazines, the teenagers who took (9) …………. in the survey seem to respond to the situation by saving more than half (10) …………. their cash.Điền vào số 8                                                                                                       

Xem chi tiết 249 lượt xem 5 năm trước

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correctword or phrase that bestfits each of the numbered blanks from 31 to35.It isn’t difficult to imagine how increases in international commerce and in the movement of people—two defining features of globalization—might influence health. More goods go more places today than at any (31)___________ in history. More people travel farther, more frequently, and come in contact with more people and goods, than at any point in history.This increased movement of both goods and people increases opportunities for the spread of disease around the world. And it’s not just goods and services that can travel across oceans and state borders—so can diseases like AIDS, malaria, or tuberculosis. The (32)___________ of BSE, or ―mad cow disease,‖ in several European countries is only one example of (33)___________trade can promote the spread of dangerous diseases. Mosquitoes that carry malaria have been found aboard planes thousands of miles from their primary habitats, and (34)___________ seafood carrying cholera bacteria have been shipped from Latin America to the United States and Europe. But just as globalization increases the frequency and ease (35)___________ which diseases can move around the world, it also can improve access to the medicines, medical information, and training that can help treat or cure these diseases.Điền vào ô số 33

Xem chi tiết 377 lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 10

Xem chi tiết 278 lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 9

Xem chi tiết 310 lượt xem 5 năm trước

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correctword or phrase that bestfits each of the numbered blanks from 31 to35.It isn’t difficult to imagine how increases in international commerce and in the movement of people—two defining features of globalization—might influence health. More goods go more places today than at any (31)___________ in history. More people travel farther, more frequently, and come in contact with more people and goods, than at any point in history.This increased movement of both goods and people increases opportunities for the spread of disease around the world. And it’s not just goods and services that can travel across oceans and state borders—so can diseases like AIDS, malaria, or tuberculosis. The (32)___________ of BSE, or ―mad cow disease,‖ in several European countries is only one example of (33)___________trade can promote the spread of dangerous diseases. Mosquitoes that carry malaria have been found aboard planes thousands of miles from their primary habitats, and (34)___________ seafood carrying cholera bacteria have been shipped from Latin America to the United States and Europe. But just as globalization increases the frequency and ease (35)___________ which diseases can move around the world, it also can improve access to the medicines, medical information, and training that can help treat or cure these diseases.Điền vào ô số 32

Xem chi tiết 2.2 K lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 8

Xem chi tiết 279 lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 7

Xem chi tiết 365 lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 6

Xem chi tiết 219 lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 5

Xem chi tiết 556 lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 3

Xem chi tiết 482 lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 4

Xem chi tiết 483 lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 2

Xem chi tiết 514 lượt xem 5 năm trước

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.One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1)__________pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2)__________poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3)__________a rich variety of animals and plants, including 1,300 rare species that do not exist (4)__________else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5)__________into the lake every day. Even where law existed, the government did not have the power to enforce them.Most industries simply ignore the regulations. The Mediterranean Sea (6)__________1% of the world'swater surface. But it is the dumping (7)__________for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8)__________shore.Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9)__________by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10)__________. We should do something now.(Source: v 14ilovetranslation.com)Điền vào số 1

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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 word “reckless” in line 11 is closest in meaning to 

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