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Teenagers ________ their sense of hearing because they always wear earphones.

A．damageB．a(chǎn)re damaging
C．has damagedD．will damage

B

解析試題分析:句意：青少年們在損害著自己的聽覺，因?yàn)樗麄兛偸谴髦鷻C(jī)。根據(jù)原因狀語從句的時(shí)態(tài)和always可以判斷這是表示一直進(jìn)行著的事情，應(yīng)該用現(xiàn)在進(jìn)行時(shí)表示動作的持續(xù)性，故答案選B。
考點(diǎn)：考查動詞時(shí)態(tài)。

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