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    精英家教网 > 高中英语 > 题目详情
    Teenagers       their health because they play computer games too much.
    A．have damagedB．are damagingC．damagedD．will damage
    B
    考查现在进行时态的用法。从句子后面的时态"because they play computer games too much”可以看出，是“现在一直在做的动作”。
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