首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Yawning can be a problem at the office for Lindsay Eierman, which makes her embarrassed. "I’ve explained, ’I’m sorry, I didn’t g
Yawning can be a problem at the office for Lindsay Eierman, which makes her embarrassed. "I’ve explained, ’I’m sorry, I didn’t g
admin
2017-12-19
144
问题
Yawning can be a problem at the office for Lindsay Eierman, which makes her embarrassed. "I’ve explained, ’I’m sorry, I didn’t get much sleep last night,’" says Ms Eierman, a 26-year-old social worker from Durham, North Carolina. But a lack of sleep may not be the problem.
Researchers are starting to unravel the mystery surrounding the yawn, one of the most common and often embarrassing behaviours. Yawning, they have discovered, is much more complicated than previously thought. Although all yawns look the same, they appear to have many different causes and to serve a variety of functions.
Yawning is believed to be a means to keep our brains alert in times of stress. Contagious yawning appears to have evolved in many animal species as a way to protect family and friends, by keeping everyone in the group vigilant. Changes in brain chemistry trigger yawns, which typically last about six seconds and often occur in clusters.
To unravel the mystery of yawning, scientists built upon early, observed clues. Yawning tends to occur more in summer. Most people yawn upon seeing someone else do it, but infants and people with autism or schizophrenia aren’t so affected by this contagion effect. And certain people yawn at surprising times, like parachutists who are about to jump out of a plane or Olympic athletes getting ready to compete.
A leading hypothesis is that yawning plays an important role in keeping the brain at its cool, optimal working temperature. The brain is particularly sensitive to overheating, according to Andrew Gallup, an assistant professor of psychology at the State University of New York at Oneonta. Reaction times slow and memory wanes when the brain’ s temperature varies even less than a degree from the ideal 98.6 degrees Fahrenheit.
There are some practical applications. Dr. Gallup said managers might want to keep in mind the brain-cooling role of yawning when a meeting is long and boring. "One way to diminish yawning frequency in an office would be to keep it air-conditioned. If it’s very cold in the room, yawning rates are going to be quite low," Dr. Gallup said.
The passage mainly discusses______.
选项
A、the rates of yawning
B、the misconceptions of yawning
C、the secrets of yawning
D、the applications of yawning
答案
C
解析
主旨题。本题考查文章主旨。本文第二段首句和末句分别指出“研究人员目前正 逐渐揭开打哈欠的秘密”“……但实际上却有很多不同的成因,所以打哈欠的作用也不 尽相同”,说明了文章的中心。剩下的四段从打哈欠的作用、成因、应用等方面简要阐述。 第二段和第四段首句的mystery是直接的线索词,故C项“打哈欠的秘密”为正确答案。 A项“打哈欠的频率”和D项“打哈欠的应用”都是其中一个方面。B项“对打哈欠的误 解”只是第一段句末的引子,并非文章主要内容,故排除。
转载请注明原文地址:https://kaotiyun.com/show/71BZ777K
0
考研英语一
相关试题推荐
We’vebeenhearingaboutitforyears,butthebooklesslibraryhasfinallyarrived,firstappearingoncollegecampuses.AtDre
IsStanfordstillauniversity?TheWallStreetJournalrecentlyreportedthatmorethanadozenstudentshaveleftschooltowo
IsStanfordstillauniversity?TheWallStreetJournalrecentlyreportedthatmorethanadozenstudentshaveleftschooltowo
Aprettypotplantmightmakeanunemotionalworkspacefeelmorepersonal.Butnewresearchhasrevealedthatofficeplantsdo
Aprettypotplantmightmakeanunemotionalworkspacefeelmorepersonal.Butnewresearchhasrevealedthatofficeplantsdo
HowdoyouexplaineconomicsinplainEnglish?TheFederalReserveBankofNewYorkhasbeenansweringthequestionwithaneven
It’sdifficulttoimagineaworldwithoutantibiotics.Theycurediseasesthatkilledourancestorsincrowds,andenableanynu
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
Inasweepingoverallinspectionofits$21billionMedicaidprogram,theFloridaLegislatureapprovedabilltoshiftnearlyth
CanMedicinesMakeYouHealthy?Writeanessayof160-200wordsbasedonthedrawing.Inyouressay,youshould1)descr
随机试题
()一般在签订监理合同,收到设备工程合同和技术方案、设计图纸文件后的一段时间内,由总监理工程师组织专业监理工程师完成该设备工程项目的监理规划编制工作,经监理单位技术负责人审核批准后,在监理交底会前报送业主。
唐律规定,“义绝”者必须强制离婚。下列情形中,构成义绝的是()
决定肿瘤特性的是
导致乳糜尿浑浊的主要原因是
∫-∞+∞=()。
在员工职业生涯的中期,最重要的是对员工进行()。
根据《中外合资经营企业法》及其实施条例的规定,下列事项中,无须经合营企业出席董事会会议的全体董事一致通过的是()。
建设创新型国家,要把()作为科学技术的战略基点,走中国特色自主创新道路,推动科学技术的跨越式发展。
波提利阿法
设二元函数计算二重积分
最新回复
(
0
)