题目内容
According to the statistics, listening to loud music at rock concerts ______ hearing loss in some teenagers in the past 2 decades.
A. have caused B. caused C. had caused D. has caused
【答案】
D
【解析】本题考查主谓一致。根据动名词短语作主语, 句子的谓语动词用单数形式, 根据主语与caused的主动关系。
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