题目内容
Here in Alaska,the wolf almost disappeared a few years ago. It's be?cause hunters were killing hundreds of them for 1 . However,laws were passed to protect the wolves 2 the sportsmen and also the people who 3 the animals for fur. So the wolf population has greatly 4 . Now there are so 5 wolves that they are destroying their own 6 supply.
A wolf naturally preys(捕食) on animals in the 7 family. People in the wilderness(荒原) also hunt deer for food. Many of the animals have been destroyed by the very 8 recently and by changes in the wilderness 9
life. When the deer can't find 10 food ， they die.
If the wolves 11 to kill large numbers of deer,their prey will 12 some day. And the wolves will,too. So we must 13 the cycle of life in the wilderness to 14 the ecology(生态环境) .If we killed more wolves,we would 15 them and their prey from extinction(绝种) .We'd also save some 16 animals.
In another northern state,wolves 17 cows and chickens for food. 18 want theUnited Statesgovernment to send a team of 19 to study the problem. They believe it is necessary to kill wolves in some areas and to protect them in places where there is a(n) 20 wolf population.
1.A. fur B. food C. sport D. fun
2.A. for B. of C. from D. about
3.A. took B. caught C. found D. played
4.A. increased B. reduced C. developed D. advanced
5.A. many B. few C. much D. little
6.A. animal B. plant C. food D. water
7.A. cat B. dog C. deer D. cow
8.A. warm summers B. warm springs C. cool autumns D. cold winters
9.A. animal B. plant C. water D. cold
10.A. good B. much C. more D. enough
11.A. start B. stop C. decide D. continue
12.A. disappear B. reduce C. increase D. appear
13.A. remove B. change C. renew D. form
14.A. change B. remain C. balance D. resist
15.A. protect B. prevent C. keep D. save
16.A. wild B. farm C. useful D. field
17.A. offered B. struck C. attacked D. looked
18.A. Farmers B. Scientists C. Biologists D. Fishermen
19.A. officials B. doctors C. teachers D. biologists
20.A. small B. large C. increasing D. natural
1.C sport在这里指的是"乡间户外活动"，后面的sports?men给出了提示。
2.C protect ...from为固定用法，意为"保护……免于…… 之害/之苦"。
3.B还有些人是为了取得动物皮毛而去捕捉这些动物。
4.A按常识判断，动物保护法通过以后，狼的数量应当大大增加。
5.A现在狼太多了，反而把自己的食物来源破坏了。
6.C
7.C狼以吃鹿为生。后面有提示。
8.D寒冷的冬天使动物大量地死亡。
9.B鹿赖以生存的野生植物环境也遭到了破坏。
10.D当鹿找不到足够多的食物的时候，它们就死亡了。
11.D如果狼继续大量地捕食鹿的话，它们的食物来源总有一天会消失。
12.A
13.B "我们"必须改变这种恶性的生态循环。
14.C保持生态平衡。
15.D如果"我们"捕杀更多的狼，"我们"实际上拯救了它们和它们的猎物，使它们免于灭绝之灾。
16.B狼除了吃野外的动物，它们还吃农场饲养的动物。此处不宜选用wild，因为上文已提到狼捕捉的猎物就是指野外的动物。
17.C狼攻击这些奶牛和小鸡来获得食物。
18.A只有农民才会提出这样的请求。
19.D只有生物学家与这个问题有关。
20.A在狼太多的地方采取捕杀的政策，而在狼数量不多的地方采取保护政策。
