Playing too many computer games is ______ to school chidren.
A．contentB．harmfulC．violentD．religious
B
本題考查形容詞。A滿意的；C暴力的；D宗教的。句中be harmful to對…….有害，句意：玩太多的電腦游戲?qū)W(xué)校孩子有害。
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