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【题目】 Playing computer games too often our eyes.

A.is helpful to

B.is harmful to

C.is good for

【答案】B

【解析】

试题分析:句意:经常地玩电脑游戏对我们的眼睛有害。A.is helpful to……有帮助;B.is harmful to……有害;C.is good for……有益。经常玩电脑游戏对眼睛有害,故选B。

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