Some snakes eat other snakes, even poisonous ones. The poison does not do them any harm(伤害). Snakes can swallow(吞下) things that are bigger around than they themselves are. This is possible because the jawbones(腭骨) are loosely joined, and the mouth can stretch（伸展）to make room for a fat animal. The snake’s slim body stretches to make space for the animal when it is inside.

      Many snakes eat birds’ eggs or frogs（青蛙）. Others eat pests（害虫）, mice and other animals that harm crops on farms. Because snakes do this valuable work, you should never kill one. It is too dangerous for you to kill a poisonous one. Leave that job to experts.

1. Which of the following groups of food is usually had by a snake?

A. Mice, crops, birds’ eggs.

B. Pests, frogs, some animals, plants.

C. Birds’ eggs, frogs, all animals, other snakes.

D. Mice, frogs, pests, some animals, other snakes.

2.We should not kill a snake because       

A. it is poisonous

B. it can do something useful for man

C. it will strike you in return

D. we are not experts

3.Snakes may do some valuable work by       

A. eating pests, mice and some harmful animals

B. doing harm to other animals

C. eating birds’ eggs and frogs

D. both A and C

4.In writing this passage the writer mainly wants us to       

A. have a better impression(印象) about snakes

B. like snakes

C. kill snakes with the help of experts

D. regard snakes as one of man’s best friends

Some snakes eat other snakes, even poisonous ones. The poison does not do them any harm(伤害). Snakes can swallow(吞下) things that are bigger around than they themselves are. This is possible because the jawbones(腭骨) are loosely joined, and the mouth can stretch（伸展）to make room for a fat animal. The snake’s slim body stretches to make space for the animal when it is inside.

      Many snakes eat birds’ eggs or frogs（青蛙）. Others eat pests（害虫）, mice and other animals that harm crops on farms. Because snakes do this valuable work, you should never kill one. It is too dangerous for you to kill a poisonous one. Leave that job to experts.

60. Which of the following groups of food is usually had by a snake?

   A. Mice, crops, birds’ eggs.

   B. Pests, frogs, some animals, plants.

   C. Birds’ eggs, frogs, all animals, other snakes.

   D. Mice, frogs, pests, some animals, other snakes.

61. We should not kill a snake because       

   A. it is poisonous              B. it can do something useful for man

   C. it will strike you in return    D. we are not experts

62. Snakes may do some valuable work by       

    A. eating pests, mice and some harmful animals

    B. doing harm to other animals

    C. eating birds’ eggs and frogs

    D. both A and C

63. In writing this passage the writer mainly wants us to        

   A. have a better impression(印象) about snakes

   B. like snakes

   C. kill snakes with the help of experts

   D. regard snakes as one of man’s best friends

阅读理解

　　“There is no arguing about taste”--runs the Latin proverb. But taste did not just happen. Cultural, historical, biological and environmental events have interacted to cause frogs, for example, to be viewed as delicious in southern China but to be regarded with revulsion(厌恶) in northern China. Even though much remains unknown, tastes cannot be dismissed as inarguable or illogical(不合逻辑的); an attempt will be made here to discover why, as Lucretius put it,“What is food to one man may be fierce poison to others.”

　　Among the thirty million tribal(部落的) people of India, a total of 250 animal species(物种) are avoided by one group or another. Most of these people will not eat meat from a tiger or any of various snakes. Although they say they feel a relationship with these animals, it is obvious that both are highly dangerous and that hunting them regularly would be foolish.

　　Monkeys are avoided, probably because they look like human beings in appearance; in these tribes, man-eating is viewed as extremely cruel. An unwillingness to eat some female animals is believed to have been caused by respect for the mother's role, but it could also be due to a policy of allowing the females to reproduce and provide more young for people. Many tribes avoid eating any animal that has died of unknown causes, a wise attitude in view of the possibility that the animal might have died from a disease that could spread to humans. Animals that eat waste food are similarly avoided, an adaptive(适应性的) step that prevents contact with parasites(寄生虫), and that might explain why members of one tribe eat any of twenty-one different species of rats, but not the house rat.

1．We can infer from the first paragraph that _____.

[　　]

A．people from different parts of China never share the same food

B．taste is illogical and inarguable and cannot be explained

C．all the people in Southern China eat frogs

D．the author does not quite agree with the Latin proverb

2．The tribal people in India don't eat snakes or tigers because _____.

[　　]

A．they feel a relationship with them

B．they have parasites on them

C．they think it safe to leave them alone

D．they may spread disease

3．The members of one tribe eat many species of rats except the house rat because _____.

[　　]

A．house rats are not green food

B．house rats look terrible

C．house rats are their friends

D．house rats eat waste food

4．The Indian tribes' choice of food shows that their decision is based on _____.

[　　]

A．their Gods' teachings

B．their own safety

C．where they live

D．their tastes

阅读理解

　　“There is no arguing about taste”--runs the Latin proverb. But taste did not just happen. Cultural, historical, biological and environmental events have interacted to cause frogs, for example, to be viewed as delicious in southern China but to be regarded with revulsion(厌恶) in northern China. Even though much remains unknown, tastes cannot be dismissed as inarguable or illogical(不合逻辑的); an attempt will be made here to discover why, as Lucretius put it,“What is food to one man may be fierce poison to others.”

　　Among the thirty million tribal(部落的) people of India, a total of 250 animal species(物种) are avoided by one group or another. Most of these people will not eat meat from a tiger or any of various snakes. Although they say they feel a relationship with these animals, it is obvious that both are highly dangerous and that hunting them regularly would be foolish.

　　Monkeys are avoided, probably because they look like human beings in appearance; in these tribes, man-eating is viewed as extremely cruel. An unwillingness to eat some female animals is believed to have been caused by respect for the mother's role, but it could also be due to a policy of allowing the females to reproduce and provide more young for people. Many tribes avoid eating any animal that has died of unknown causes, a wise attitude in view of the possibility that the animal might have died from a disease that could spread to humans. Animals that eat waste food are similarly avoided, an adaptive(适应性的) step that prevents contact with parasites(寄生虫), and that might explain why members of one tribe eat any of twenty-one different species of rats, but not the house rat.

1．We can infer from the first paragraph that _____.

[　　]

A．people from different parts of China never share the same food

B．taste is illogical and inarguable and cannot be explained

C．all the people in Southern China eat frogs

D．the author does not quite agree with the Latin proverb

2．The tribal people in India don't eat snakes or tigers because _____.

[　　]

A．they feel a relationship with them

B．they have parasites on them

C．they think it safe to leave them alone

D．they may spread disease

3．The members of one tribe eat many species of rats except the house rat because _____.

[　　]

A．house rats are not green food

B．house rats look terrible

C．house rats are their friends

D．house rats eat waste food

4．The Indian tribes' choice of food shows that their decision is based on _____.

[　　]

A．their Gods' teachings

B．their own safety

C．where they live

D．their tastes