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
Suppose we built a robot(机器人)to explore the planet Mars. We provide the robot with seeing detectors to keep it away from danger.
Suppose we built a robot(机器人)to explore the planet Mars. We provide the robot with seeing detectors to keep it away from danger.
admin
2016-10-25
43
问题
Suppose we built a robot(机器人)to explore the planet Mars. We provide the robot with seeing detectors to keep it away from danger. It is powered entirely by the sun. Should we program the robot to be equally active at all times? No. The robot would be using up energy at a time when it was not receiving any. So we would probably program it to cease its activity at night and to wake up at dawn the next morning.
According to the evolutionary(进化的)theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason. The theory does not deny(否认)that sleep provides some important restorative functions. It merely says that evolution has programmed us to perform those functions at a time when activity would be inefficient and possibly dangerous. However, sleep protects us only from the sort of trouble we might walk into; it does not protect us from trouble that comes looking for us. So we sleep well when we are in familiar, safe place, but we sleep lightly, if at all, when we fear that bears will nose into the tent.
The evolutionary theory accounts well for differences in sleep among creatures. Why do cats, for instance, sleep so much, while horses sleep so little? Surely cats do not need five times as much repair and restoration as horses do. But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep. Horses must spend almost all their waking hours eating, because what they eat is very low in energy value. Moreover, they cannot afford to sleep too long or too deeply, because their survival depends on their ability to run away from attackers.
Which of the following is the main idea of the passage?______.
选项
A、Evolution has equipped all creatures with a regular pattern of sleeping and waking.
B、The study of sleep is an important part of the evolutionary theory.
C、Sleeping patterns must be taken into consideration in the designing of robots.
D、The sleeping pattern of a living creature is determined by the food it eats.
答案
A
解析
本题是一道主旨题。文章由机器人需要休息展开,围绕进化过程中生物睡眠与清醒的模式进行介绍。
转载请注明原文地址:https://kaotiyun.com/show/A3HC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
TherearemanyshopsinSingaporewherecustomersstillbargain,althoughpricesareclearlyshownonthegoods.Thereisnothin
Mostyoungpeopleenjoyphysicalactivities,walking,cycling,football,ormountaineering.Thesewhohaveapassion【C1】____
Workaholism(工作狂)canbeaseriousproblem.Trueworkaholics(工作狂)wouldratherworkthandoanythingelseandtheyprobablydon’t
Intheyear2100,theworldisgoingtohaveapopulationofabout8billion.Mostscientistsagreethatthemostsevereproblem
Man:Hello.CouldIspeaktoMr.Smith?Woman:【D1】______Heisinanimportantmeeting.Oh,yes.I’msuretherewillbeanend
Thegreatestrecentsocialchangeshavebeen【C1】______thelivesofwomen.Duringthetwentiethcenturytherehasbeenaremarkab
Youthisnotamatteroftimebutamatterofself-improvement,bothphysicallyandmorally.Beingagoodyouth,oneshouldhave
Thegovernessagreedtoteachthetemperamentalchild______shewasgivencompleteauthority.
Althoughhehadlookedthroughallthereferencematerialonthesubject,hestillfoundithardtounderstandthispointandhe
Howdowefindourwayoutofthelandusedproblem?Onewaymightbetoreexamineourvalues,tothinkinnewdirections.
随机试题
某施工标段合格水泥原价每吨380元,运杂费每吨20元,场外运输损耗率1%,采购及保管费率为2.06%,每吨水泥袋包装回收为5元,那么该标段所用水泥的预算价格为()元/吨。
A.绝经后出现阴道流血B.继发性渐进性痛经C.接触性出血D.不规则阴道流血,经量增多E.术后7~8天出现阴道流血子宫颈癌的早期表现为
患者,男性,65岁。胃溃疡伴瘢痕性幽门梗阻。今晨在气管内麻醉下行毕Ⅱ式胃大部切除术,术毕返回病房。术后留置胃管、腹腔引流管。现麻醉未醒。术后第1天,胃管引流出鲜红色血性液400ml,正确的处理是
下列各项中,不属于单位工程施工组织设计主要内容的是()。
学生票为半价坐票、加快票、空调票、动车组列车只发售二等座车学生票,票价为公布票价的75%。()
依法行政的核心概念是:
-1,0,27,()
“学会一种最好的解决办法来解决可能对角色行为构成威胁的具体问题”描述的是思维的()
以下选项中,合法的C语言常量是()。
He______readingsilentlyatfirst.
最新回复
(
0
)