2. 外语
  3. A、Pollution of the environment. B、A new generation of pest killers. C、Over-killing by hunters. D、Destruction of their natural ho

A、Pollution of the environment. B、A new generation of pest killers. C、Over-killing by hunters. D、Destruction of their natural ho

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问题  
选项 A、Pollution of the environment.
B、A new generation of pest killers.
C、Over-killing by hunters.
D、Destruction of their natural homes.
答案D
解析
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大学英语六级

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