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
专升本
Can animals be made to work for us? Some scientists think that one day animals may be trained to do a number of simple jobs that
Can animals be made to work for us? Some scientists think that one day animals may be trained to do a number of simple jobs that
admin
2012-11-20
33
问题
Can animals be made to work for us? Some scientists think that one day animals may be trained to do a number of simple jobs that are now done by human beings.
They point out that at a circus, for example, we may see elephants, monkeys, dogs and other animals doing quite skillful things. Perhaps you have seen them on the television or in a film. If you watch closely, you may notice that the trainer always gives the animal a piece of candy or a piece of fruit as a reward. The scientists say that many different animals may be trained to do a number of simple jobs if they know they will get a reward for doing them.
Of course, as we know, dogs can be used to guard a house, and soldiers in both old and modern times have used geese to give warning by making a lot of noise when a stranger or an enemy comes near. But it may be possible to train animals to work in factories. In Russia, for example, pigeons which are birds with good eyesight, are being used to watch out for faults in small steel balls that are being made in one factory. When the pigeon sees a ball which looks different from others, it touches a steel plate with its beak. This turns on a light to warn people in the factory. At the same time a few seeds are given as a reward. It takes three to five weeks to train a pigeon to do this and one pigeon can inspect 3 000 to 4 000 balls an hour.
Apes have been used in America in helping to make cars, and scientists believe that these large monkeys may be one day gather crops and even drive trains.
The trainer usually gives the animal a piece of candy or fruit______.
选项
A、when it is hungry
B、before it plays a trick
C、when it starts to play a trick
D、after it has done the trick
答案
D
解析
动物做一个表演,就给它一些吃的东西。
转载请注明原文地址:https://kaotiyun.com/show/YheC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
TheU.S.DepartmentofLaborStatisticsindicatethatthereisanoversupplyofcollege-trainedworkersandthatthisoversuppl
AlthoughtheUnitedStatescherishesthetraditionthatitisanationofsmalltownsandwideopenspaces,onlyoneineveryei
Lindaisagoodteacher;shealwaysourmemorywhenwecan’tremember.
WhenChristopherColumbus"discovered"theNewWorldin1492,hethoughthehadreachedthecontinentofAsiaandhadlandedin
WhenChristopherColumbus"discovered"theNewWorldin1492,hethoughthehadreachedthecontinentofAsiaandhadlandedin
Thewarhadbegun,andGeorgehadjoinedtheairforce.Hewantedtobeapilotandaftersomemonthshemanagedtogettothe
FromMondayuntilFridaymostpeoplearebusyworkingorstudying,butintheeveningsandonweekendstheyarefreeandenjoy
Ahundredyearsago,thegamewenowcallfootballdidnotexist.Americanfootballstartedduringagamebetweentwocolleges.
Aroundtheworldmoreandmorepeoplearetakingpartindangeroussportsandactivities.Ofcourse,therehavealwaysbeenpeop
Wespendourleisurehoursefficientlyforhigherproduction,livebytheclockevenwhentimedoesnotmatter,modernizeourho
随机试题
男性,67岁,间断出现肉眼血尿半年,一直未到医院检查。1周前出现大量肉眼血尿,伴有血块,出现排尿困难,到医院就诊。检查:B超检查显示膀胱底部有一个2cm×3cm乳头样肿物。以膀胱肿瘤收入院治疗,行经尿道膀胱肿瘤电切术。术后1周行膀胱灌注化疗。问:该病
计算机软件分为_______。
下列属于测定胰岛B细胞功能的检查是
下列关于周围神经解剖的叙述,错误的是
白阳有限公司分立为阳春有限公司与白雪有限公司时,在对原债权人甲的关系上,下列哪一说法是错误的?(卷三2011年真题试卷第25题)
由企业、银行或其他消费信用机构向个人提供的信用,形式为:
甲公司以A型号产品为样品,谎称是B型号产品与乙公司签订买卖合同。之后市场行情变化,A型号产品价格大涨。下列说法正确的是()
设有关系R,S和T如下。关系T是由关系R和S经过哪种操作得到的?
TrafficinOurCitiesThevolumeoftrafficinmanycitiesintheworldtodaycontinuestoexpand.Thiscausesmanyproblems
A、Stockbroker.B、Physicist.C、Mathematician.D、Economist.D
最新回复
(
0
)