问题
选择题
Studies show that MP3 people have made much use of _____ music may be causing hearing loss.
A．enjoy
B．to enjoy
C．enjoying
D．enjoyed
答案
答案：B
考查不定式做目的状语，句意：研究表明人们用来享受音乐的MP3可能会导致失聪。选B。
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