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
外语
What’s the main topic of the monologue?
What’s the main topic of the monologue?
admin
2016-06-25
54
问题
What’s the main topic of the monologue?
Today’s discussion is about a common animal reaction—the yawning. The dictionary defines a yawn as " an involuntary reaction to fatigue or boredom". That’s definitely true for human yawns but not necessarily for animal yawns. The same action, the yawn, can have quite different meanings in different species.
For instance, some animals yawn to intimidate intruders on their territory. Fish and lizards are examples of this. Hippos use yawns when they want to resolve a quarrel. Observers have seen two hippos yawn at each other for as long as two hours before they stop quarreling.
As for social animals like baboons or lions—they yawn to set up the pecking order within social groups,and lions often yawn to calm social tensions. Sometimes these animals yawn for a strictly physiological reason— that is to increase oxygen levels. And curiously enough, when they yawn for a physical reason like that, they do what men do—they try to stifle the yawn by looking away or by covering their mouths.
选项
A、To exercise the jaw muscles.
B、To eliminate fatigue.
C、To get greater strength for attacking.
D、To gain more oxygen.
答案
D
解析
转载请注明原文地址:https://jikaoti.com/ti/6BfsFFFM
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Heroinaddictionstodayisfoundchieflyamongyoungmenofminoritygroupsinghetto(犹太人区)areas.Ofthemorethan60000know
In1637theFrenchmathematicianReneDescartespredictedthatitwouldneverbepossibletomakeamachinethatthinksashuman
Countries,businesses,andschoolsarethreeareasthatneedgoodleaders.Chooseoneofthesethreeareasanddescribethemos
Learningdisabilitiesareverycommon.They【21】______perhaps10percentofallchildren.Scientistsnowknowthereareman
Intheseyears,economic,socialandtechnologicalfactorshaveinfluencedthekitchens’design.61)Sinceitisoftenusedsimu
Inafewweeks,nighschoolstudentsfacetheprospectoftakingthemuch-publicizednewSATReasoningTest,whichforthefirst
Whatisthespeakermainlydiscussing?
Manyayoungpersontellsmehewantstobeawriter.Ialwaysencouragesuchpeople,butIalsoexplainthatthere’sabigdiff
Competitionforadmissiontothecountry’stopprivateschoolshasalwaysbeentough,butthisyearElisabethrealizedithadre
shoplifting
随机试题
在DreamweaverCS5中,关于图片超链接,下列说法不正确的是_______。
患儿,1岁。发热、咳嗽、流涕3天入院。入院后体温持续不退,达40℃,呕吐、谵妄,抽搐2次。体检:胸、腹部及四肢皮肤有瘀斑,前囟隆起,双肺呼吸音粗糙,可闻及少许干性哕音,腹软,脑脊液外观混浊。为明确病原菌,应首先进行的检查是
只在桁架节点上布置荷载时,则桁架杆件产生的力是()。
下列适用《政府采购法》的主体包括()。
有两个投资方案:甲方案的标准离差为4.86%,乙方案的标准离差为2.31%,可以断定乙方案的风险一定比甲方案的风险小。()
以下属于认知过程的有()。
学习长方形的面积计算公式后,再学习正方形的面积计算公式的学习类型是()。
21世纪高技术的核心是()。
完整的计算机软件指的是
Thirtyyearsago,anyoneblaminglonelinessforphysicalillnesswouldhavebeenlaughedat.Butasscientistsstudieddifferent
最新回复
(
0
)