SECTION B:

In this section you will find after the reading passage a number of questions of unfinished statements about the passage, each with four suggested answers or ways of finishing. You must choose the one which you think fits best (10 points)

People usually sing because they like music or because they feel happy. They express their happiness by singing. When a bird sing, however, its song usually means much more than that the bird is happy. Birds have many reasons for singing. They sing to give information. Their songs are their language.

The most beautiful songs are sung by male (cock) birds. They sing when they want to attract a female (hen) bird. It is their way of saying that they are looking for a wife.

Birds also sing to tell other birds to keep away. To a bird, his tree or even a branch of tree, is his home. He does not want strangers to come near him, so he sings to warn them.

If a bird cannot sing well, he usually has some other means of giving important information. Some birds dance, spread out their tails or make other sings. One bird has a most unusual way of finding a wife. It builds a small garden of shells and flowers.

1. Why do people usually sing ?
2. They like birds. B. They feel happy.
3. They want to tell a story . D. They like studying music.
4. Which birds sing the most beautiful songs ?
5. Birds in a good temper. B. Cock birds.
6. Hen birds. D. Female birds which attract male birds.

In this section you will find after the reading passage a number of questions of unfinished statements about the passage , each with four suggested answers or ways of finishing . You must choose the one which you think fits best (10 points)

People usually sing because they like music or because they feel happy. They express their happiness by singing. When a bird sing, however, its song usually means much more than that the bird is happy. Birds have many reasons for singing. They sing to give information. Their songs are their language.

The most beautiful songs are sung by male (cock) birds. They sing when they want to attract a female (hen) bird. It is their way of saying that they are looking for a wife.

Birds also sing to tell other birds to keep away. To a bird, his tree or even a branch of tree, is his home. He does not want strangers to come near him, so he sings to warn them.

If a bird cannot sing well, he usually has some other means of giving important information. Some birds dance, spread out their tails or make other sings. One bird has a most unusual way of finding a wife. It builds a small garden of shells and flowers.

21. Why do people usually sing ?
A. They like birds. B. They feel happy.
C. They want to tell a story . D. They like studying music.

22. Which birds sing the most beautiful songs ?
A. Birds in a good temper. B. Cock birds.
C. Hen birds. D. Female birds which attract male birds.

23. What warnings does a bird sometimes sing ?
A. A warning to keep away. B. A warning to come quickly.
C. A warning about the approach of people D. A warning to stop singing.

24. What do most birds usually do if they cannot sing well ?
A. warn other birds to go away. B. give their information in another way.
C. find a wife. D. fly high in the sky.

25. What is one bird's unusual way of attracting a hen bird ?
A. It dances. B. It spreads out its tail.
C. It searches for a wife. D. It uses shells and flowers to make a garden.

I. Read the passage and choose the best answer A, B, C or D .

People usually sing because they like music or because they feel happy. They express their happiness by singing. When a bird sing, however, its song usually means much more than that the bird is happy. Birds have many reasons for singing. They sing to give information. Their songs are their language.The most beautiful songs are sung by male birds. They sing when they want to attract a female bird. It is their way of saying that they are looking for a wife.Birds also sing to tell other birds to keep away. To a bird, his tree or even a branch of tree, is his home. He does not want strangers to come near him, so he sings to warn them.If a bird cannot sing well, he usually has some other means of giving important information. Some birds dance, spread out their tails or make other sings ..............................

1. People sing because ...........

A. She feels happy B. they love music C. they want to tell a story D. they know many songs

2. What is one of the main reasons why birds sing ?

A. They are in a bad temper B. They want to give information C. They are sad D. They can sing many songs

3. According to the passage , a bird sings ...................

A. to stop sadness B. to tell strangers to keep away

C. to warn about the approach of people D. to tell other birds to come quickly

4. Most birds usually ............. if they cannot sing well .

A. give information in another way B. warn other birds to go away

C. find a wife D. fly in the sky

5. What is the main of the passage about ?

A. People like music B. People or birds sing for many purposes

C. Birds like music D. Birds only sing for fun

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.

As a result of pollution, Lake Erie, on the borders of the USA and Canada, is now without any living things. Pollutions in water are not simply a matter of “poisons” killing large numbers of fish overnight. Very often the effects of pollution are not noticed for many months or years because the first organisms to be affected are either plants or plankton. But these organisms are the food of fish and birds and other creatures. When this food disappears, the fish and birds die in this way a whole food chain can be wiped out, and it is not until dead fish and water birds are seen at the river’s edge or on the sea shore that people realize what is happening. Where do the substances which pollute the water come from? There are two main sources – sewage and industrial waste. As more detergent is used in the home, so more of it is finally put into our rivers, lakes and seas.

Detergents harm water birds dissolving the natural substance which keep their feather waterproof. Sewage itself, if it is not properly treated, makes the water dirty and prevents all forms of life in rivers and the sea from receiving the oxygen they need. Industrial waste is even more harmful since there are many high poisonous things in it, such as copper and lead. So, if we want to stop this pollution, the answer is simple, sewage and industrial waste must be made clean before flowing into the water. It may already be too late to save some rivers and lakes, but others can still be saved if the correct action is taken at once.

Pollution in water is noticed ______.

A. when the first organisms is affected

B. as soon as the balance of nature is destroyed.

C. when poisons are poured into water

D. when a good many fish and birds die

Read the passage carefully and choose the correct answer.

 People usually sing because they like music or because they feel happy. They express their happiness by singing. When a bird sings however, its song usually means much more than that the bird is happy. Birds have many reasons for singing. They sing to give information. Their songs are their language.

The most beautiful songs are sung by male (cock) birds. They sing when they want to attract a female (hen) bird. It is their way of saying that they are looking for a wife.

Birds also sing to tell other birds to keep away. To a bird, his tree or even a branch of tree, is his home. He does not want strangers to come near him, so he sings to warn them.

If a bird cannot sing well, he usually has some other means of giving important information. Some birds dance, spread out their tails or make other signs. One bird has a most unusual way of finding a wife. It builds a small garden of shells and flowers.

 What do most birds usually do if they cannot sing well?

A. warn other birds to go away. 

B. give their information in another way. 

C. find a wife. 

D. fly high in the sky.

People usually sing because they like music or because they feel happy. They express their happiness by singing. When a bird sing, however, its song usually means much more than that the bird is happy. Birds have many reasons for singing. They sing to give information. Their songs are their language.

The most beautiful songs are sung by male (cock) birds. They sing when they want to attract a female (hen) bird. It is their way of saying that they are looking for a wife.

Birds also sing to tell other birds to keep away. To a bird, his tree or even a branch of tree, is his home. He does not want strangers to come near him, so he sings to warn them.

If a bird cannot sing well, he usually has some other means of giving important information. Some birds dance, spread out their tails or make other sings. One bird has a most unusual way of finding a wife. It builds a small garden of shells and flowers.

21. Why do people usually sing ?
A. They like birds. B. They feel happy.
C. They want to tell a story . D. They like studying music.

22. Which birds sing the most beautiful songs ?
A. Birds in a good temper. B. Cock birds.
C. Hen birds. D. Female birds which attract male birds.

23. What warnings does a bird sometimes sing ?
A. A warning to keep away. B. A warning to come quickly.
C. A warning about the approach of people D. A warning to stop singing.

24. What do most birds usually do if they cannot sing well ?
A. warn other birds to go away. B. give their information in another way.
C. find a wife. D. fly high in the sky.

25. What is one bird's unusual way of attracting a hen bird ?
A. It dances. B. It spreads out its tail.
C. It searches for a wife. D. It uses shells and flowers to make a garden.

People usually sing because they like music or because they feel happy . They express their happiness by singing . When a bird sings , however , its song usually means such more than that the bird is happy . Birds have many reasons for singing . They sing to give information . Their songs are their language

The most beautiful songs are sung by male birds . They sing when they want to attract female birds . It is their way of singing that helps them look for a wife

Birds also sing to tell other birds to keep away . To a bird , his tree or even a branch of tree is his home . He does not want strangers to come near him , so he sings to warn them

If a bird can not sing well , he usually has some other means of giving important information . Some birds dance , spread out their tails or make others sing . One bird has a most unusual way of finding a wife . For example , it builds a small garden of shells and flowers

1. What do most birds usually do if they can not sing well ?

A. Warn other birds to go away B. Find a wife

C. Fly high in the sky D. Give their information in another way

2. What is one bird's unusual way of attracting a female bird ?

A. It dances B. It spreads out its tail

C. It use shells and flowers to make a garden D. It searches for a wife

3. Why do people usually sing ?

A. They feel happy B. They like birds C. They want to tell a story D. They study music

4. Which birds sing the most beautiful songs ?

A. Birds in a good temper B. Female birds C. Male birds D. Female birds which attract male birds

5. What warning does a bird sometimes sing to give ?

A. A warning to come quickly B. A warning to keep away

C. A warning to be dangerous D. A warning to stop singing

In this section you will find after the reading passage a number of questions of unfinished statements about the passage , each with four suggested answers or ways of finishing . You must choose the one which you think fits best (10 points)

People usually sing because they like music or because they feel happy. They express their happiness by singing. When a bird sing, however, its song usually means much more than that the bird is happy. Birds have many reasons for singing. They sing to give information. Their songs are their language.

The most beautiful songs are sung by male (cock) birds. They sing when they want to attract a female (hen) bird. It is their way of saying that they are looking for a wife.

Birds also sing to tell other birds to keep away. To a bird, his tree or even a branch of tree, is his home. He does not want strangers to come near him, so he sings to warn them.

If a bird cannot sing well, he usually has some other means of giving important information. Some birds dance, spread out their tails or make other sings. One bird has a most unusual way of finding a wife. It builds a small garden of shells and flowers.

21. Why do people usually sing ?
A. They like birds. B. They feel happy.
C. They want to tell a story . D. They like studying music.

22. Which birds sing the most beautiful songs ?
A. Birds in a good temper. B. Cock birds.
C. Hen birds. D. Female birds which attract male birds.

23. What warnings does a bird sometimes sing ?
A. A warning to keep away. B. A warning to come quickly.
C. A warning about the approach of people D. A warning to stop singing.

24. What do most birds usually do if they cannot sing well ?
A. warn other birds to go away. B. give their information in another way.
C. find a wife. D. fly high in the sky.

25. What is one bird's unusual way of attracting a hen bird ?
A. It dances. B. It spreads out its tail.
C. It searches for a wife. D. It uses shells and flowers to make a garden.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 44.

Bird migration is one of the most interesting yet least understood natural phenomena. Every fall birds from northern latitudes fly in groups to the warmer southern latitudes and then return north in the spring. Scientists agree on the main reasons for migration: to follow the food supply and to avoid harsh climate conditions. For example, insects disappear during the cold months, prompting insect-dependent birds to fly south to warm areas where insects breed. No similar consensus has emerged, however, about how birds are able to navigate. Despite many recent experiments, bird experts still do not know how birds arrive at the same destinations every year and then find their way back home in the spring.

Some have suggested that birds find their way by following landmarks, such as rivers and mountain ranges. Experiments have confirmed that some species do follow such topographic features. But that method cannot explain how some birds travel at night. Other studies show that some nocturnal birds navigate by the stars. But that explanation cannot explain daytime migration or travel when the skies are cloudy.

The most popular explanation currently is that birds are guided by Earth’s magnetic poles. The mechanism by which that works has not yet been proved. One theory points to the fact that some birds’ contain magnetite, a naturally occurring magnetic compound consisting of iron oxide. Magnetite has been found in many animals, including birds. With magnets embedded in their brains, birds would be able to sense the magnetic fields of the North and South Poles.

A recent experiment with homing pigeons provided some evidence that magnetite does play a crucial role in migration. Homing pigeons are known to have the ability to return to their homes after being taken hundreds of miles away. Researchers found that they could train homing pigeons to recognize changes in a magnetic field. When a surrounding magnetic field was normal, the birds would gather at one end of a cage. But when the field’s polarity was altered, they hopped to the other end, suggesting that they were directing and responding to changes in the magnetic field.

Another theory has been offered to explain this sensitivity to magnetic poles, a theory that draws upon quantum mechanics, which is the study of how particles move inside an atom. It relies on the fact that electrons come in pairs that orbits the nucleus of an atom. The two electrons spin in opposite directions, creating two magnets that neutralize each other. But when molecules split and react with other molecules to form compounds, the electrons pairs may no longer spin in opposite directions. Instead,  they may repel each other, as when two north ends of magnets are pressed together. The electrons struggle to change direction in order to achieve a stable state in which the two electrons again neutralize each other, giving off no magnetic field. 

According to the passage, all of the following are theories about how birds navigate EXCEPT:

A. They follow landmarks like rivers and mountains

B. They are guided by their position relative to the stars

C. They feel vibrations in nerve endings in their brains

D. They respond to changes in light