_____we can make laws to protect certain animals, we are frequently incapable of controlling the environment.

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问题 _____we can make laws to protect certain animals, we are frequently incapable of controlling the environment.

选项 A、Whatever
B、Provided that
C、While
D、However

答案C

解析
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本试题收录于: 英语题库普高专升本分类
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