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【题目】A lot of illness can________if you take exercise for half an hour every day.

A.preventB.preventedC.be prevented

【答案】C

【解析】

句意:如果你每天锻炼半小时,许多疾病是可以预防的。

考查含有情态动词的被动语态。情态动词can后面跟动词原形,可知排除prevented;根据句意可知主语和谓语动词是被动关系,可知使用被动语态,其构成can be + 动词的过去分词;故选C

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