题目内容：
根据下面资料，回答题 Ancient Greek philosopher Aristotle viewed laughter as "a bodily exerciseprecious to health." But 1 some claims to the contrary, laughing probably haslittle influence on physical fitness. Laughter does 2 short-term changes inthe function of the heart and its blood vessels, 3 heart rate and oxygenconsumption. But because hard laughter is difficult to 4 , a good laugh isunlikely to have 5 benefits the way, say, walking or jogging does.
6 , instead of straining muscles to build them, as exercise does, laughterapparently accomplishes the 7 . Studies dating back to the 1930s indicate thatlaughter 8 muscles, decreasing muscle tone for up to 45 minutes after the laughdies down.
Such bodily reaction might conceivably help 9 the effects of psychologicalstress. Anyway, the act of laughing probably does produce other types of 10 feedbackthat improve an individual's emotional state. 11 one classical theory of emotion,our feelings are partially rooted 12 physical reactions. It was argued at the endof the 19th century that humans do not cry 13 they are sad but they become sadwhen the tears begin to flow.
Although sadness also 14 tears, evidence suggests that emotions can flow 15 muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wtirzburg in Germany asked volunteers to 16 . a pen either with their teeth - thereby creating an artificial smile - or with their lips, which would produce a(n) 17 expression. Those forced to exercise their smiling muscles 18 more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown, 19 that expressions may influence emotions rather than just the other way around. 20 , the physical act of laughter could improve mood.
第（1）题选 A．among
B．except
C．despite
D．like
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