According to the statistics listening to loud music at rock concerts hearing loss in som

问题补充：

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：

A. have caused

B. caused

C. had caused

(答案→)D. has caused

解析：本题考查主谓一致。句意：根据调查，在摇滚音乐会听大音量的音乐，在过去二十年来已经引起了一些年轻人的听力损失。结合语境可知本句描述的是到现在已经完成的动作，故用现象完成时态。本句主语为名词，表示抽象含义，不可数句子的谓语动词用单数形式,故选D。