Question

13．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 （31）Dso that they will not disappear from the wilderness（荒野）．
For Killing Wolves
In Alaska，the wolves almost disappeared a few years ago，because hunters were killing hundreds of them for sport．However，（32）G．So the wolf population has greatly increased．Now there are many wolves．Now there are so many wolves that they are destroying their own food supply．
A wolf naturally eats animal s i n the deer family．If the wolves continue to kill 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（生态平衡）．If we killed more wolves，（33）A．We'd also save some farm animals．
Against Killing Wolves
Researchers have found wolves and their prey living in balance．The wolves keep the deer population from becoming too large，and（34）B．
The real problem is that（35）F．Even if wilderness land is not used directly for human needs，the wolves can't always find enough food．So they have to travel to the nearest source to find enough food．Then there is danger．Th e"big bad wolf"has arrived!And everyone knows what happens next．

A．we would save them and their prey
B．that keeps a balance in the wilderness
C．it necessary to kill wolves in some areas 
D．wolves must be protected
E．wolves are afraid of people
F．the areas where wolves can live are being used by people
G．laws were established to protect the wolves．

Answer 1

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 DGABF
31  D  根据后文so that they will not disappear from the wilderness（荒野）．  可知他们不会从荒野消失，所以必须保护它们，故选D．
32  G  根据后文So the wolf population has greatly increased． 可知狼的数量快速增加的原因是制定法律保护狼，故选G．
33  A  根据后文We'd also save some farm animals． 可知我们还可以拯救农场动物，因此此处应该填我们可以拯救他们和猎物，故选A．
34  B  根据前文The wolves keep the deer population from becoming too large，可知狼可以阻止鹿数量的快速增加，后句和前句的句式结构是一致的，故选B．
35  F  根据后文Even if wilderness land is not used directly for human needs，the wolves can't always find enough food．可知即使荒地没有被直接被人类使用，狼也不能找到足够多的食物，因此此处应该填狼生活的地方被人类使用，故选F．

点评 做七选五题目时要注意以下规则：1．放进去通顺，这一点是基础．凡不通顺的必错无疑；2、选项中有单词、词组、句子成分或与所选答案所在段内容重合；
3、选项与其上句或下句之间有必然的逻辑关系；4、选项全部内容都属于正确答案所在段．有时备选答案中可能含有甲乙两项内容，这时，只有当甲和乙都归属于本段时，答案才是正确的．