题目内容
Scientists are convinced ______ the positive effect of laughter ______ physical and mental health.
A.of;at | B.by;in | C.of;on | D.on;at |
C
解析试题分析:考查固定词组。固定词组be convinced of相信…;have an effect on…对…有影响;句意:科学家们相信微笑对于身体很精神健康都有积极的影响。故C正确。
考点:考查固定词组
点评:be convinced of相信…;have an effect on…对…有影响;对于形容词的短语搭配在平时的学习中也要注意识记和辨析。
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