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单选题
Listening to loud music at rock concerts ______ caused hearing loss in some teenagers.
A

is

B

are

C

has

D

have


参考答案

参考解析
解析:
句意:在摇滚音乐会上听喧闹的音乐已经导致一些青少年听力丧失。分析句式可知,现在分词结构是句子的主语,谓语应用单数第三人称;主语和cause之间是主谓关系,不用被动式。故答案是C项。
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考题 单选题Listening to loud music at rock concerts ______ caused hearing loss in some teenagers.A isB areC hasD have