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  3. By saying "let nature take its course", the biologists mean______. The following are causes leading to the wolves’ decline in n

By saying "let nature take its course", the biologists mean______. The following are causes leading to the wolves’ decline in n

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问题 By saying "let nature take its course", the biologists mean______.
The following are causes leading to the wolves’ decline in number EXCEPT______.
选项 A、hunting
B、fights among packs
C、vehicles
D、Canine parvovirus
答案A
解析 事实细节题。对于引起狼数量减少的原因，文章分主次列出了一些，但重点分析丁微小病菌，最后三段提到狼群间的争斗和行驶车辆也是其数量减少的原因，四个选项中只有A"猎杀"是没有提到过的，故选A。
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考研英语一

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