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.temporary

B.permanent

C.frequent

D.extraordinary

答案及解析： B

解析：

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