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
Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echolocation (回声定位
Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echolocation (回声定位
admin
2013-04-06
51
问题
Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echolocation (回声定位) in bats to see a case in which the voice plays a strictly practical role.
To get a full appreciation of what this means we must turn first to some recent human inventions. Everyone knows that if he shouts near a wall or a mountainside, an echo will come back. The further off this solid obstacle, the longer time it will take for the return of the echo. A sound made by tapping on the main body of a ship will be reflected from the sea bottom, and by measuring the time interval between the taps and the receipt of the echoes the depth of the sea at that point can be calculated. So was born the echo-sounding equipment, now in general use in ships. Every solid object will reflect a sound, varying according to the size and nature of the object. A shoal of fish will do this. So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish. With experience, and with improved equipment, it is now possible not only to locate fish but to tell if it is herring, cod, or other well-known fish, by the pattern of its echo.
A few years ago it was found that certain bats emit squeaks (吱吱声) and by receiving the echoes they could locate and steer clear of obstacles—or locate flying insects on which they feed. This echolocation in bats is often compared with radar, the principle of which is similar.
Which of the following statements can be inferred from the passage?
选项
A、Animals are more intelligent than humans.
B、Humans are more intelligent than animals.
C、Animals are often compared with human inventions.
D、Humans are often inspired by animals.
答案
D
解析
推理判断题。文章先说动物的回声定位功能,再说到回声定位探测仪的发明,由此可见,是动物的某些能力启发了人类的创造,因此只有D可从文中推测。文章并没有从智力方面比较人类和动物,因此可以排除A和B;尽管文章说到了蝙蝠和雷达的原理相似,但是C中的often一词无据可循,且C的说法浮于表面,没有说到重点,故排除。
转载请注明原文地址:https://kaotiyun.com/show/IHr7777K
0
大学英语四级
相关试题推荐
Thegoldenruleyourparentsandteacherstaughtyouwasprettysimple:Dountoothersasyou’dhaveothersdountoyou.Imagine
In1812,inavillagenearParis,alittleboyhithimselfintheeyewithoneofhisfather’s【B1】______tools,andbecameblind.
In1812,inavillagenearParis,alittleboyhithimselfintheeyewithoneofhisfather’s【B1】______tools,andbecameblind.
A、Theapplicationisn’tavailableattheoffice.B、Thewomanshouldmailacopyofherapplication.C、Thephotocopymachineisn’
A、Shelakesitasakindofexercise.B、Shewantstosavemoney.C、Shelovesdoinganythingthatisnew.D、Herschoolisn’tvery
Almostallcompaniestryingtodevelopnewproductsandcreatenewjobshaveto______.Thispassagemainlytalksabout______.
Whilecrossingthemountainarea,allthemencarriedgunslestthey______(被野生动物袭击).
A、Theyhuntforfood.B、Theyhuntformoney.C、Theymistreatanimals.D、Theyhuntoldanimals.A短文中引用大型动物猎杀者在他们的日记中写的话,理解最后一句话if
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmostareligion.Thousandsofsportsfansbuyexpensivetic
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmostareligion.Thousandsofsportsfansbuyexpensivetic
随机试题
人民币的两种具体形态是()。
护理管理者面对干扰自己正常工作的事必须
通过抑制胆固醇转运蛋白抑制胆固醇吸收,很少吸收且几乎不经肝酶CYP代谢,具有良好的安全性和耐受性,属于胆固醇吸收抑制剂类调血脂药的是()。
在一次保险法课上,甲、乙、丙三位同学就保险法的有关问题展开了讨论。甲认为:①保险利益是投保人对保险标的具有的经济上的利益;②在保险合同中,投保人交付保险费,买到的只是一个将来可能获得补偿的机会,这说明保险合同具有射幸性。乙认为:①在财产保险中,如果保险
《污染源自动监控管理办法》规定,自动监控系统的运行和维护,应当遵守()。
某施工合同约定承包人对基础工程垫资施工,发包人对垫付资金按银行贷款利率2倍支付利息,后发包人未按合同约定支付垫资利息,承包人诉至法院,则人民法院对垫资利息的处理,正确的是()。
根据《最高人民法院关于审理期货纠纷案件若干问题的规定》,下列哪些行为产生的民事责任由期货公司承担?()
我国公务员制度正式开始实施是在1993年()。
TransportationuseatoBeMuchSlowerthanItIsNowFormanyyearsintiledesert,camelsuse
Onlybyunitedopposition,______(我们才能够根除恐怖主义).
最新回复
(
0
)