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
2016-11-17
44
问题
What’s the main topic of the monologue?
Today’s discussion is about a common animal reaction—the yawn. 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、Different animals’ yawns.
B、Human’s yawn.
C、Fish’s yawn.
D、Social animals’ yawns.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/VjRd777K
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
61)Whiletherearealmostasmanydefinitionsofhistoryastherearehistorians,modernpracticemostcloselyconformstoone
AsiftomakeupforthedepartureoftheglamorousHale-Boppcomet,astronomershavere-leasedaflurryofreportsonotherce
AsiftomakeupforthedepartureoftheglamorousHale-Boppcomet,astronomershavere-leasedaflurryofreportsonotherce
NewfiguresfromFrance,GermanyandItaly--thethreebiggesteconomiesinthe12-countryEurozone-suggestthecontinent’sec
NewfiguresfromFrance,GermanyandItaly--thethreebiggesteconomiesinthe12-countryEurozone-suggestthecontinent’sec
Mostgrowingplantscontainmuchmorewaterthanallothermaterialscombined.C.R.Barneshassuggestedthatitisaspropert
Whatdoestheword"valentines"refertointhepassage?
What’sthemaintopicofthemonologue?
What’sthemaintopicofthemonologue?
随机试题
心脏右前斜位摄影,吞服钡剂的目的是为了观察
降主动脉移行成左右髂总动脉在哪个椎体水平
家蚕细胞具有高效表达外源基因的能力。将人干扰素基冈导人家蚕细胞并大规模培养,可以提取干扰素用于制药。问题:通过PCR技术可大量获取目的基因,该PCR反应体系的主要成分包含:扩增缓冲液(含Mg2+)、水、4种脱氧核糖苷酸、模板DNA、_________
国家公务员考核的等次不包括()。
15,21,29,39,()
简述中华人民共和国成立初期在政权巩固方面所采取的主要措施及其意义。
面部反馈效应
某电路中有S、T、W、X、Y、Z六个开关,使用这些开关必须满足下面的条件:(1)如果W接通,则X也要接通;(2)只有断开S,才能断开T;(3)T和X不能同时接通,也不能同时断开;(4)如果Y和Z同时接通,则W也必须接
有关DHCP协议,正确的陈述是__________。
设有以下定义和程序:#include<iostream.h>classA1{public:voidshowl(){cout<<"classA1"<<end1;
最新回复
(
0
)