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11.The past fifty years or so have seen the gradual disappearing of animals from this earth,fishes from the sea,trees and plants from the land.
Many factors result in this unpleasant phenomenon(现象).Among them,hunting is the main factor that endangers wild life.Some people kill wild life for sport.They take pleasure in collecting heads and hides(兽皮).Yet others specialize in commercial hunting like killing whales.
Apart from this,the rapidly growing human population threatens(威胁) wild life on land,too.Towns expand and roads have to be built,so forests are burnt and trees are chopped down.It seems that man needs every inch of land within his reach,so he moves on to the natural habitat of wild life.Tigers,lions and leopards slowly die off without the food and shelter that the forests provide.
In addition,rapid urbanization(城市化) means industrial expansion.Very often,poisonous chemicals,industrial wastes and oil are dumped into the rivers and seas.Fish and birds are threatened.
Man depends greatly on animals for survival.He needs their flesh,hides and furs.Thus,man cannot do without wild life; or he himself would become extinct.The public should be made aware that it would be better to shoot the animals with a camera than with a gun.In this way,they can preserve and help wild life to continue living rather than to remove all signs of it.
Man must learn to farm the sea as he does the land.He should control the amount and the frequency of his catch.He should allow fish to breed and multiply before netting them.Man also needs to build forest reserves,and to pass laws prohibiting(禁止) the killing of animals,especially those that are already rare.To keep the present animal kingdom,the least that man can do is to clean the seas and rivers and to prevent pollution.
The cycle of nature is such that it forms a vicious circle(恶性循环).The pesticides(杀虫剂) that we spray on crops can kill the birds and animals that feed on them.When man eats these poisoned animals,he himself can die.We must therefore test the chemicals to be used before they are sprayed or it might mean the death of man!
23.The author's purpose in writing the passage is toD.
A.explain how important wild life is to human beings.
B.call people's attention to serious problem of pollution.
C.explain relationship between wild life and human being
D.call people's attention to the protection of wild life
24.Which of the following is NOT true according to the passage?C
A.The growing human population threatens wild life because people take land from animals
B.Some people devote themselves to killing animals for money.
C.People can preserve and help wild life to continue living by shooting the animals with a camera.
D.Fishes are threatened by poisonous chemicals,industrial wastes and oil.
25.The last paragraph is mainly aboutB.
A.the importance of wild life to human beings
B.how the circle of nature is formed
C.how animals are gradually disappearing form the earth
D.how to solve the problem of pollution.

分析 主要介绍了野生动物濒临灭绝的原因,以及对人类自己造成的影响,从而唤醒人们要注重保护野生物的意识.

解答 DCB
23.D 主旨大意题.根据全文的内容可知,主要介绍了野生动物濒临灭绝的原因,以及对人类自己造成的影响,从而唤醒人们要注重保护野生物的意识,故选D.
24.C 细节题.根据第三段开头the rapidly growing human population threatens(威胁) wild life on land得知A正确; commercial hunting暗示B正确;poisonous chemicals,industrial wastes and oil are dumped into the rivers and seas.Fish and birds are threatened.这句话告诉我们选项D正确; it would be better to shoot the animals with a camera than with a gun.这句话推出选项C太绝对,不符合题意.
25.B主旨大意题.根据最后一段大意特别是第一句话The cycle of nature is such that it forms a vicious circle得知,主要告诉我们大自然的循环是如何形成的,故选B.

点评 考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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