As we all know, computer games with fights have bad effects the teens.A．in B．at C．forD．on 题目和参考答案——青夏教育精英家教网—

题目内容

As we all know, computer games with fights have bad effects _______the teens.

A．in

B．at

C．for

D．on

介词辨析.in在里面;at在一点;for为了;on在一面;句意:众所周知,带有战斗的电脑游戏对于青少年有很不好的影响.have effects on sth，表示对…有影响。故选D

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