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【题目】Reading English every day is _______________ for English learners.

A. unhealthy B. serious C. necessary D. dangerous

【答案】C

【解析】句意:每天读英语对英语学习者来说很有必要。unhealthy不健康的;serious严重的;necessary必要的;dangerous危险的,结合句意可知选C。

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