Listening to loud music at rock concerts caused hearing loss in some teenagers.A. isB. a

发布时间：2020-08-16 20:10:26

Listening to loud music at rock concerts      caused hearing loss in some teenagers.
A. is
B. are
C. has
D. have

网友回答

A. is
B. are
(答案→)C. has
D. have
解析：在摇滚音乐会听大声音乐在一些青少年中已经引起了听力的损伤。动名词作主语谓语动词用单数，已经引起，应为完成时。
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