The discoveries of science are often a mixed blessing; on the one hand they give us valuable pesticides that enable farmers to g

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问题 The discoveries of science are often a mixed blessing; on the one hand they give us valuable pesticides that enable farmers to grow more abundant crops, and on the other hand they______the benefits by destroying the ecological balances.

选项 A、misplace
B、counteract
C、mollify
D、damage

答案B

解析
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