题目内容

It is reported that conservation groups in North America have been arguing about the benefits and dangers of wolves.Some groups believe wolves should be killed.Other people believe wolves

must be protected so that they will not disappear from the wilderness(荒野)

                            For Killing Wolves

In Alaska,the wolf almost disappeared a few years ago,because hunters were killing hundreds of them for sport.However, laws were established to protect the wolves from sportsmen and people who catch the animals for their fur.So the wolf population has greatly increased.Now there are so many wolves that they are destroying their own food supply.

    A wolf naturally eats animals in the deer family.People in the wilderness also hunt deer for food.Many of the animals have been destroyed by the very cold winters recently and by changes in the wilderness plant life.When the deer can’t find enough food,they die.

    If the wolves continue to kill large numbers of deer,their prey(猎物)will disappear some day.And the wolves will, too.So we must change the cycle of life in the wilderness to balance the

ecology.If we killed more wolves,we would save them and their prey from dying out.We’d also save some farm animals.

    In another northern state,wolves attack cows and chickens for food.Farmers want the

government to send biologists to study the problem.They believe it necessary to kill wolves in some areas and to protect them in places where there is a small wolf population.

                           Against Killing Wolves

    If you had lived long ago,you would have heard many different stories about the dangerous

wolf.According to most stories,hungry wolves often kill people for food.Even today,the stories of the“big bad wolf'"will not disappear.

    But the fact is wolves are afraid of people and they seldom travel in areas where there is a

human smell.When wolves eat other animals,they usually kill the very young, or the sick and

injured.The strongest survive.No kind of animal would have survived through the centuries if the

weak members had lived.And has always been a law of nature

    Although some people say it is good sense to kill wolves,we say it is nonsense! Researchers

have found wolves and their prey living in balance.The wolves keep the deer population from

becoming too large, and that keeps a balance in the wilderness plant life.

    The real problem is that the areas where wolves can live are being used by people.Even if

wilderness land is not used directly for human needs.the wolves can’t always find enough food.So they travel to the nearest source, which is often a farm.Then there is danger.The“big bad wolf”has arrived! And everyone knows what happens next.

1.According to the passage,some people in North America favor killing wolves for all the following reasons EXCET that            

A.there are too many wolves                  B.they kill large numbers of deer

    C.they attack cows and chickens for food        D.they destroy the wilderness plant life

2.Some people are against killing wolves because           

    A.wolves help to keep the ecological balance in the wilderness

    B.there is too small a wolf population in the wilderness

    C.there are too many deer in the wilderness

    D.wolves are afraid of people and never attack people

3.According to those against killing wolves,when wolves eat other animals,       

A.they never eat strong and healthy ones

B.they always go against the law of nature

    C.they might help this kind of animals survive in nature

    D.they disturb the ecological balance in the wilderness

4.The last sentence“And everyone knows what happens next”implies that in such cases     

    A.farm animals will be in danger and have to be shipped away

    B.wolves will kill people and people will in turn kill them

    C.wolves will find enough food sources on farms

    D.people will leave the areas where wolves can live

练习册系列答案
相关题目

完形填空

  Number sense is not the ability to count.It is the ability to recognize a   1   in number.Human beings are born with this ability.  2  , experiments show that many animals are, too.For example, many birds have good number sense.If a nest has four eggs and you remove one, the bird will not   3  .However, if you remove two, the bird   4   leaves.This means that the bird knows the   5   between two and three.

  Another interesting experiment showed a bird's   6   number sense.A man was trying to take a photo of a crow(乌鸦)that had a nest in a tower, but the crow always left when she saw him coming.The bird did not   7   until the man left the tower.The man had an   8  .He took another man with him to the tower.One man left and the other stayed, but they did not   9   the bird.The crow stayed away until the second man left, too.The experiment was   10   with three men and then with four men.But the crow did not return to the nest until all the men were   11  .It was not until five men went into the tower and only four left that they were   12   able to fool the crow.

  How good is a human's number sense? It's not very good.For example, babies about fourteen months old almost always notice if something is taken away from a   13   group.But when the number goes beyond three or four, the children are   14   fooled.

  It seems that number sense is something we have in common with many animals in this world, and that our human   15   is not much better than a crow's.

(1)

[  ]

A.

rise

B.

pattern

C.

change

D.

trend

(2)

[  ]

A.

Importantly

B.

Surprisingly

C.

Disappointedly

D.

Fortunately

(3)

[  ]

A.

survive

B.

care

C.

hatch

D.

notice

(4)

[  ]

A.

generally

B.

sincerely

C.

casually

D.

deliberately

(5)

[  ]

A.

distance

B.

range

C.

different

D.

interval

(6)

[  ]

A.

amazing

B.

annoying

C.

satisfying

D.

disturbing

(7)

[  ]

A.

relax

B.

recovere

C.

react

D.

return

(8)

[  ]

A.

appointment

B.

excuse

C.

idea

D.

explanation

(9)

[  ]

A.

fool

B.

hurt

C.

catch

D.

kill

(10)

[  ]

A.

repo

B.

repeated

C.

designed

D.

approved

(11)

[  ]

A.

confused

B.

gone

C.

tired

D.

drunk

(12)

[  ]

A.

gradually

B.

luckily

C.

strangely

D.

finally

(13)

[  ]

A.

single

B.

small

C.

local

D.

new

(14)

[  ]

A.

seldom

B.

temporarily

C.

merely

D.

often

(15)

[  ]

A.

sight

B.

nature

C.

ability

D.

belief

Number  sense is not the ability to count. It is the ability to recognize a   1  in number. Human beings are born with this ability. 2 ,experiments show that many animals are, too. For example, many birds have good number sense. If a nest has four eggs and you remove one, the bird will not  3 . However, if you remove two, the bird 4 leaves. This means that the bird knows the  5  between two and three.

Another interesting experiment showed a bird's 6 number sense. A man was trying to take a photo of a crow(乌鸦)that had a nest in a tower, but the crow always left when she saw him coming. The bird did not 7 until the man left the tower. The man had an 8 .He took another man with him to the tower. One man left and the other stayed, but they did not 9 the bird. The crow stayed away until the second man left, too. The experiment was  10 with three men and then with four men. But the crow did not return to the nest until all the men were 11 .It was not until five men went into the tower and only four left that they were 12 able to fool the crow.

How good is a human's number sense? It's not very good. For example, babies about fourteen months old almost always notice if something is taken away from a  13 group. But when the number goes beyond three or four, the children are 14  fooled.

It seems that number sense is something we have in common with many animals in this world, and that our human 15 is not much better than a crow's.

1. A. rise        B. pattern              C. change           D. trend

2. A. Importantly  B. Surprisingly  C. Disappointedly D. Fortunately

3. A. survive         B. care         C. hatch     D. notice

4. A. generally        B. sincerely   C. casually      D. deliberately

5.A. distance       B. range     C. different      D. interval

6.A. amazing       B. annoying      C. satisfying  D. disturbing

7. A. relax          B. recover       C. react     D. return

8. A. appointment     B. excuse       C. idea      D. explanation

9. A. fool           B. hurt      C. catch     D. kill

10.A. repo              B. repeated   C. designed   D. approved

11.A. confused       B. gone     C. tired      D. drunk

12.A. gradually       B. luckily    C. strangely  D. finally

13.  A. single        B. small     C. local     D. new

14. A. seldom        B. temporarily C. merely    D. often

15. A. sight          B. nature    C. ability     D. belief

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网