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  3. Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】______some claims to the c

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】______some claims to the c

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问题     Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】______some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】______short-term changes in the function of the heart and its blood vessels, 【B3】______heart rate and oxygen consumption. But because hard laughter is difficult to【B4】______, a good laugh is unlikely to have【B5】______benefits the way, say, walking or jogging does.
    【B6】______, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】______. Studies dating back to the 1930’s indicate that laughter【B8】______muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down.
    Such bodily reaction might conceivably help【B9】______the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】______feedback that improve an individual’ s emotional state.【B11】______one classical theory of emotion, our feelings are partially rooted【B12】______physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】______they are sad but they become sad when the tears begin to flow.
    Although sadness also【B14】______tears, evidence suggests that emotions can flow【B15】______muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】______a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】______expression. Those forced to exercise their smiling muscles【B18】______more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】______that expressions may influence emotions rather than just the other way around.【B20】______, the physical act of laughter could improve mood.
【B19】
选项 A、suggesting
B、requiring
C、mentioning
D、supposing
答案A
解析 考查动词辨析与逻辑关系。本空所在的位置用动词的现在分词结构作伴随状语。本空前一句话意为“与那些嘴巴收缩成皱眉形状的实验对象相比，被迫练习笑肌的实验对象对于有趣动画的反应更为强烈”。本空之后的宾语从句意为“表情可能影响情绪，而不是情绪影响表情”，是前面实验的结果。因此A．suggesting“暗示，暗含”，符合题意。require“要求，需要”，mention“提及”，suppose“假设”，均与题意不符。
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