题目内容

Millions of youngsters across Europe could suffer ____ hearing loss after five years if they listen to MP3 players at too high a volume for more than five hours a week, EU scientists warned.
A．temporaryB．permanentC．frequentD．extraordinary
B
词义辨析。A. 临时的   B. 永久的 C. 频繁的   D.非凡的。句意：欧盟科学家警告说，欧洲数以百万计的年轻人可能五年后可能要遭受永久的听力损失，如果……，结合语境可知选B为最佳答案.
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