Nuclear power plants, ______ to some serious breakdowns, have become a center of controversy.

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问题 Nuclear power plants, ______ to some serious breakdowns, have become a center of controversy.

选项 A、having recently been subjected
B、recently having been subjected
C、have recently subjected
D、recently have subjected

答案A

解析 subject…to…“使……遭受……”，因此需要用过去分词作状语，而副词要放在主动词和分词之间，因此可确定A为正确答案，过去分词的完成式，表示分词的动作发生在主句的谓语动作之前。

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A类竞赛（研究生）

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