Ancient Greek philosopher Aristotle viewed laughter as ―a bodily exercise precious to health.‖ But despite some claims to the contrary, chuckling probably has little influence on physical fitness. Laughter does produce short-term changes in cardiovascular function and respiration, boosting heart rate, respiratory rate and depth, as well as oxygen consumption.But because hard laughter is difficult to sustain, a good guffaw is unlikely to have measurable cardiovascular benefits the way, say, walking or jogging does.
In fact, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the opposite. Studies dating back to the 1930s indicate that laughter relaxes muscles, decreasing muscle tone for up to 45 minutes after the guffaw subsides.
Such physical relaxation might conceivably help moderate the effects of psychological stress. After all, the act of laughing probably does produce other types of physical feedback that improve an individual’s emotional state. According to one classical theory of emotion, our feelings are partially rooted in physical reactions. American psychologist William James and Danish physiologist Carl Lange argued at the end of the 19th century that humans do not cry because they are sad but that they become sad when the tears begin to flow.
Although sadness also precedes tears, evidence suggests that emotions can flow from muscular responses. In an experiment published in 1988,
social psychologist Fritz Strack of the University of Würzburg in Germany and his colleagues asked volunteers to hold a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a disappointed expression. Those forced to exercise their smiling muscles reacted more exuberantly to funny cartoons than did those whose mouths were contracted in a frown, suggesting that expressions may influence emotions rather than just the other way around. Similarly, the physical act of laughter could improve mood.
以下是2011年考研英语(一)完型真题，这个不用细看，待会会说到这篇完形。
Directions:
Read the following text. Choose the best word(s) for each numbered blank and mark [A], [B], [C] or [D] on ANSWER SHEET 1. (10 points) Ancient Greek philosopher Aristotle viewed laughter as ―a bodily exercise precious to health。‖ But __1___some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does __2___short-term changes in the function of the heart and its blood vessels, ___3_ heart rate and oxygen consumption. But because hard laughter is difficult to _
_4__, a good laugh is unlikely to have __5___ benefits the way, say, walking or jogging does。
__6__, instead of straining muscles to build them, as exercise does,
react面试题目大全laughter apparently accomplishes the __7__, studies dating back to the 1930’s indicate that laughter__8___ muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down。
Such bodily reaction might conceivably help _9__the effects of psychological stress. Anyway, the act of laughing probably does produce other types of ___10___ feedback, that 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 end of the 19th century that humans do not cry ___13___they are sad but they become sad when 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 würzburg 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 enthusiastically to funny catoons than did those whose months were contracted in a frown, ____19___ that expressions may influence emotions rather than just the other way around __2
0__ , the physical act of laughter could improve mood。
1.[A]among      [B]except      [C]despite [D]like
2.[A]reflect      [B]demand      [C]indicate      [D]produce
3.[A]stabilizing  [B]boosting [C]impairing    [D]determining
4.[A]transmit      [B]sustain  [C]evaluate      [D]observe
5.[A]measurable  [B]manageable    [C]affordable    [D]renewable
6.[A]In turn      [B]In fact  [C]In addition    [D]In brief
7.[A]opposite  [B]impossible    [C]average      [D]expected
8.[A]hardens      [B]weakens      [C]tightens      [D]relaxes
9.[A]aggravate    [B]generate      [C]moderate  [D]enhance
10.[A]physical  [B]mental        [C]subconscious  [D]internal
11.[A]Except for  [B]According to[C]Due to        [D]As for
12.[A]with        [B]on            [C]in [D]at
13.[A]unless      [B]until          [C]if          [D]because
14.[A]exhausts    [B]follows      [C]precedes  [D]suppresses
15.[A]into      [B]from  [C]towards      [D]beyond
16.[A]fetch        [B]bite          [C]pick      [D]hold
17.[A]disappointed [B]excited      [C]joyful      [D]indifferent
18.[A]adapted      [B]catered      [C]turned      [D]reacted
19.[A]suggesting[B]requiring    [C]mentioning  [D]supposing
20.[A]Eventually    [B]Consequently  [C]Similarly [D]Conversely
当我们把原文和完形的文章对照起来看的话，就能知道一篇完形是如何生成的了。蓝的外文期刊原文，
棕是试卷完形文章，粉是完形与原文不同处。大家大概扫一眼就行，不用细看，直接跳啦~~ Ancient Greek philosopher Aristotle viewed laughter as ―a bodily
exercise precious to health.‖ Ancient Greek philosopher Aristotle viewed laughter as ―a bodily exercise precious to health。But despite some claims to the contrary, chuckling probably has little influence on physical fitness. But __1___some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does produce short-term changes in cardiovascular function and respiration, boosting heart rate, respiratory rate and depth, as well as oxygen consumption. Laughter does __2___short-term changes in the function of the heart and its blood vessels, ___3_ heart rate and oxygen consumption. But because hard laughter is difficult to sustain, a good guffaw is unlikely to have measurable cardiovascular benefits the way, say, walking or jogging does. But because hard laughter is difficult to __4__, a good laugh is unlikely to have __5___ benefits the way, say, walking or jogging does。
In fact, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the opposite.__6__, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the __7__, Studies dating back to the 1930s indicate that laughter relaxes muscles, decreasing muscle tone for up to 45 minutes after the guffaw subsides.studies dating back to the 1930’
s indicate that laughter__8___ muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down。

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