题目内容

Teenagers ________ their sense of hearing because they always wear earphones.
A．damageB．are damaging
C．has damagedD．will damage
B

试题分析:句意：青少年们在损害着自己的听觉，因为他们总是戴着耳机。根据原因状语从句的时态和always可以判断这是表示一直进行着的事情，应该用现在进行时表示动作的持续性，故答案选B。
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