8．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 wilderndss（荒野）
For Killing Wolves
In Alaska，the wolf almost disappeared a few years ago，because hunters were killing hundreds 0f them forsport．However．1aws were established to protect the wolves from sportsmen and people who catch the animals for their fur．So the woIf 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 woIf 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 woIf'"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 bv 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．
60．According to the passage，some people in North America favor killing wolves for all the following reasons EXCET thatD．
A．there are too many wolves B．they kill large numbers deer
C．they attack cows and chickens for food D．they destroy the wilderness plant life
61．Some people are against killing wolves becauseA．
A．wolves help to keep the ecological balance in the wildemess
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
62．According to those against killing wolves，when wolves eat other animals，C．
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
63．The last sentence"And everyone knows what happens next"implies that in such casesB．
A．farm animals will be in danger and have to be shipped away
B．woIves will kill people and people will in turn kill them
C．wolves wilI find enough food sources on famls
D．people will leave the areas where wolves can live．
分析 本文属于记叙文阅读，主要向我们说明了北美洲的保护组织一直在争论狼的利益和危险，一些组织认为狼应该被杀，而另一些人说出了狼存在的好处，文章中介绍了这两种不同观点的理由，告诉我们其实狼在自然界中有很大的用处．
解答 60．D 细节理解题，根据第四段So the woIf population has greatly increased．If the wolves continue to kill large numbers of deer，their prey（猎物）will disappear some day．In another northern state，wolves attack cows and chickens for food．可知猎杀狼的原因是因为有太多的狼，他们杀死大量的鹿并攻击奶牛，而没有提到他们破坏旷野植物，故选D．
6l．A 细节理解题，根据倒数第二段The wolves keep the deer population from becoming too large，and that keeps a balance in the wilderness plant life．可知一些人反对杀狼是因为狼在旷野中帮助保持生态平衡，故选A．
62．C 细节理解题，根据倒数第二段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．可知狼吃那些年轻的生病的或受伤的动物，体现了适者生存的自然法则，因此狼可能帮助这种动物在大自然中生存，故选C．
63．B 推理判断题，根据最后一段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．可知如果狼的居住的地方被人类占据，它们不能获得足够的食物，就会跑到就近的农场吃人，那么人类也会反过来杀死它们，故选B．
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