Listening to loud music at rock concerts __________caused hearing loss in som...

作者: tihaiku 人气: - 评论: 0
问题 Listening to loud music at rock concerts __________caused hearing loss in some teenagers.
选项 A.is B.are C.has D.have
答案 C
解析 考查主谓一致。动名词作主语,句子的谓语动词用单数形式,由此排除B、D两项,根据主句与caused的主动关系,排除A项。故选C。

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