According to Darwin, why do people laugh?

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问题 According to Darwin, why do people laugh?

选项 A、Laugh is a survival technique for babies.
B、They laugh to ease hostilities.
C、They laugh to make parents feel relaxed.
D、They laugh to fight off disease.

答案A

解析事实推理题。达尔文认为婴儿的微笑是进化过程中形成的对父母的“奖励”，父母陶醉于婴儿的微笑，这鼓励他们继续照顾婴儿。我们可以推测出微笑是婴儿的生存技巧。所以选择A。

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专业英语四级

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According to Darwin, why do people laugh?

专业英语四级

Evidenceofthebenefitsthatvolunteeringcanbringolderpeoplecontinuestorollin."Volunteershaveimprovedphysicalands

Childrenbetweentheageof2and11cannotcomprehendthedifferencebetweencommercialsandtelevision,sotheycannotdefend

Peterpreferstobehisownbossand______hisownbusiness.

WhichofthefollowingstatementsisINCORRECT?

Thepopulationofthisareaismainly______Hispanic-AmericansandAmericanIndians.

Wetriedtosettletheproblemwiththemassoonaspossible,buttheyseemedto______sincerity.

Fromthegolden-tippedfieldsofmid-westAmerica/totheancientkingdomsofverdantPalestine,/thereisahappytruthtobes

UsingtheLibraryYoulookforabookinoneoftwoways:/eitheryou’llknowtheauthorandtitleofthebook,/orelsey

Hewasatalentedinventor,butheneededafinancially______partnertohelphimdevelophisbusiness.

AttheuniversityMr.Robinsonspecializedin______.

能直接证明门捷列夫元素周期表理论正确的是()。

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