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
52
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://jikaoti.com/ti/kSVFFFFM
0
大学英语四级
相关试题推荐
Theinternet____________(对产生深远的影响)people’slifestyleandvaluesystems.
AstheU.S.findsitselfincreasinglyinterwindedwithitsglobalpartners,keepingaliveitscommitmenttofreetradewillprov
AstheU.S.findsitselfincreasinglyinterwindedwithitsglobalpartners,keepingaliveitscommitmenttofreetradewillprov
In1812,inavillagenearParis,alittleboyhithimselfintheeyewithoneofhisfather’s【B1】______tools,andbecameblind.
In1812,inavillagenearParis,alittleboyhithimselfintheeyewithoneofhisfather’s【B1】______tools,andbecameblind.
A、Becausepsychologistsandrelatedpersonscanalmostalwayscureit.B、Becauseit’saperiodalmosteverychildemustexperien
Chicago:SomeBigPlacestoSeeinthe"CityoftheBigShoulders"Earlylastcentury,thepoetCarlSandburgdescribedChic
LudwigvanBeethovenwasoneofthegreatest【B1】______whoeverlived.Hethoughtthatpeoplecouldbefreewhentheywrotemus
LudwigvanBeethovenwasoneofthegreatest【B1】______whoeverlived.Hethoughtthatpeoplecouldbefreewhentheywrotemus
TheWebWaytoLearnaLanguageTheyoungwomanseatednexttousatabarrevealedavaguelyexotic(异国的)air;herlooksand
随机试题
激励有助于增强企业的凝聚力。()
毒物的物理性质对毒性有影响,下列哪一个不对?()
临床教师引进新的方法评价学生的个人能力,这时教师的角色是【】
凡出乎口而為聲者,()!
给予行政机关公务员处分,应当自批准立案之日起______作出决定;案情复杂或者遇有其他特殊情形的,办案期限可以延长,但是最长不得超过12个月。
设f(x)具有二阶导数,试确定f(x),使曲线积分∫C[e-x-2f(x)-f(x)]ydx+f’(x)dy与积分路径无关.
尿液外观呈白色浑浊,加热后浑浊消失见于
引起甲状旁腺功能亢进症最常见的病因是
“一个有效顾客要求陈述”应当()。[2007年真题]
北京的北中轴线又名()
最新回复
(
0
)