Studies show the MP3 people have made much use of music may be causing hearing loss in many people.
A. enjoy
B. to enjoy
C. enjoying
D. enjoyed
网友回答
A. enjoy
(答案→)B. to enjoy
C. enjoying
D. enjoyed
解析：考查不定式做目的状语：to enjoy 动词不定式，做目的状语，people have made much use of to enjoy music是定语从句修饰the MP3，句意：研究显示人们过度使用来听音乐的MP3可能导致失聪。选B。