Question

【题目】Listening to loud music at rock concerts _________ caused hearing loss in some teenagers.

A. is B. are C. has D. Was

Answer 1

【答案】C

【解析】

试题分析：句意：在摇滚演唱会听音量大的音乐已经在青少年的身上造成了巨大的听力损失。根据caused可以看出本题是考查现在完成时，has done.，所以选择C项。