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
Yawning can be a problem at the office for Lindsay Eierman, which makes her embarrassed. "I’ ve explained, ’I’m sorry, I didn’ t
admin
2016-01-02
41
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
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/DPsZ777K
0
考研英语一
相关试题推荐
法律教育对于新闻报道事业的意义——2007年英译汉及详解ThestudyoflawhasbeenrecognizedforcenturiesasabasicintellectualdisciplineinEuropean
Youprobablyhavealongmentallistofmomentsandfactsyouwishyoucouldremember—butactuallyyoucannot.Thegoodnews,【B1
Whenolderpeoplecannolongerremembernamesatacocktailparty,theytendtothinkthattheirbrainpowerisdeclining.Buta
Inthatmythicalera【B1】______childrenwereseenandnotheard,anddid【B2】______theyweretoldwithout【B3】______,everyoneknew
Twoofthemostcommonrumorsaboutimmigrantfamiliesarethattheydon’treallywanttobecomeAmericanandthatthey’readra
Twoofthemostcommonrumorsaboutimmigrantfamiliesarethattheydon’treallywanttobecomeAmericanandthatthey’readra
Doesthelanguagewespeakdeterminehowhealthyandrichwewillbe?NewresearchbyKeithChenofYaleBusinessSchoolsuggest
Thepastyearortwohastestedtheideathatallpublicityisgoodpublicity,atleastwhenitcomestobusiness.Undeservedbo
IntheUnitedStatesthescienceofclimatechangestillremainsacontroversialissue.Partoftheproblemisthatitiscomple
Hechangedthefuturewithouteverwinningavoteorcommandinganarmy.AllAlbertEinsteindidwashavinganidea.It’snota
随机试题
考生文件夹下存在一个数据库文件“samp2.mdb”,里面已经设计好表对象“tEmployee”、“tSell”和“tBook”,试按以下要求完成设计:(1)创建一个查询,查找并显示单价高于平均单价的图书“书名”和“出版社名称”等字段内容,所建查
HIV-Ⅰ型的靶细胞不包括
尿液中的小吞噬细胞主要来自
A.36.9~37.9℃B.36.7~37.7℃C.36.0~37.4℃D.6cm以上E.8cm以上由于核心温度不便测量,临床上常测直肠、口腔和腋窝的温度来反映体温,直肠温度为()
颈部淋巴结肿大,疑为癌肿转移时,应首先考虑的是
施工招标中采用综合评分法评标,评定报价部分得分高低的评分标准可以采用( )。
下列不属于工程计量依据的是()
以下会导致参与式管理的效用降低的因素是()。
旅游者张某带了下列物品进饭店,其中()属于《旅游业治安管理办法》严禁之列。
ItwassaidbySirGeorgeBernardShawthat"EnglandandAmericaaretwocountriesseparatedbythesamelanguage."Myfirstper
最新回复
(
0
)