单选题
中国农业银行
2016-05-01
Listening to loud music at rock concertscaused hearing loss in some teenagers.
A. is
B. are
C. has
D. have
参考答案
C
答案解析
【答案】C。解析:Listening to…是动名词短语作主语,故谓语动词用单数,根据caused可知用现在完成时的单数形式。
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