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
2018-12-01
46
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 word "contagion"(Para. 4)most probably means______.
选项
A、spreading
B、learning
C、protection
D、imitation
答案
A
解析
含义题。根据题干关键词定位到第四段。contagion前面有代词this修饰,所以必 定有指代。本句是由but连接的两个分句,所以this指代的是第一个分句的现象,即“在 看到别人打哈欠时,大多数人也会不自觉这样做”,这是一种传染效应,故A项“传染、传 播”为正确答案。B项“学习”,C项“保护”,D项“模仿”均不正确。
转载请注明原文地址:https://kaotiyun.com/show/Mc6Z777K
0
考研英语一
相关试题推荐
YourfriendJackwrotealettertotellyouhehadbuilthisownbusiness.Writealetterofabout100wordstohimtocongratul
Inthefollowingtext,somesentenceshavebeenremoved.ForQuestions41-45,choosethemostsuitableonefromthelistA-Gto
Nearlytwo-thirdsofbusinessesintheUKwanttorecruitstaffwithforeignlanguageskills.Frenchisstillthemosthighlypr
"AMZN"isafour-letterwordtomanybooksellers.Theonlineretailerhasbeen【C1】______ofkillingthebooksellingindustry.It
TheEconomistcalculatesthataroundtheworldalmost290million15-to24-year-oldsareneitherworkingnorstudying:almosta
AwaronsugarhasbegunintheUKthatechoesthenation’ssuccessfulcampaignagainstsalt.Theeffortis【C1】______becauseit
Theproblemwithtoday’shousingcrisis,politically,isthatitisjustnotallthatvisible.AttheendoftheSecondWorldWa
Theproblemwithtoday’shousingcrisis,politically,isthatitisjustnotallthatvisible.AttheendoftheSecondWorldWa
Researchhasshownthat—inbothsexesandacrossnumerouscultures—attractivepeoplearejudgedtobesmarter,kinder,morehone
TVissooftenaparent’sgoodMend,keepingkidshappilyoccupiedsothegrownupscancookdinner,answerthephone,ortakea
随机试题
第二审民事判决书的理由部分应当写明哪些内容?
阅读下面一段文字,然后回答问题。于是众人聚观者,无不流涕,都唾骂李公子负心薄倬。公子又羞又苦,且悔且泣。方欲向十娘谢罪。十娘抱持宝匣,向江心一跳。众人急呼捞救,但见云暗江心,波涛滚滚,杳无踪影。可惜一个如花似玉的名姬,一旦葬于江鱼之腹!这段描
计算机网络的主要功能是什么?
A.湿热痢疾B.热毒血痢C.暑湿泄泻D.外感泻利E.寒热夹杂痢疾
施工过程根据工艺性质的不同可分为制备类、运输类和建造类三种施工过程,( )过程一般不占有施工项目空间,也不影响总工期,不列入施工进度计划。
课题式课堂教学是研究性学习的一种方式,其基本教学模式为:如图是关于“一氧化碳的化学性质”,的课题式课堂教学中解决问题阶段,甲同学设计的证明CO具有还原性的实验装置。硬质试管中反应的化学方程式为______。
(x2+1)(x一2)7的展开式中x2的系数是_______。
设无向树T有7片树叶,其余顶点度数均为3,则T中度为3的顶点的个数是
Ifyoucouldgoonvacationasanyoneyouwanted,whowouldyouchoose?JoelStaindecidedhe’dmakeagreatRickyMartin.Welco
A、Three.B、Five.C、Seven.D、Nine.CHowmanycoloredlightsmakeupthesunlight?
最新回复
(
0
)