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
2018-08-16
23
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/3lPC777K
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
AscientistoncesaidthattheInternetwastheworld’slargestlibrary,butitcanbedifficulttofindjustwhatyou’relookin
Friendsplayanimportantpartinourdailylives,andalthoughwemaytakefriendshipforgranted,weoftendon’tclearlyunder
A、Heisthewoman’sfriend.B、Heisataxidriver.C、Heisapoliceman.D、Heisanewcomerinthecity.D
Americansspendalotofmoneyintheirdailylives.Workingpeoplespendmoneyontransportationtoandfromworkandonvariou
Tiredofdoingthesamethingsweekinweekoutwiththesamepeoplehavingthesameconversations?You’reinafriendshiprut(老
Thestonewassoheavythatitwasdifficultfortheoldmantoit.
A、Tolookforcreativeideasofawardingemployees.B、Toexplorestrategiesforloweringproductioncosts.C、Toseeknewapproac
A、Thesupportprovidedbytheregularclients.B、Theinitiativeshownbythesalesrepresentatives.C、Theimportantpartplayed
Thejobcalls______asoundknowledgeinEnglish.
Oneofhisworks______writteninFrenchlastyear.
随机试题
A、Tosavemoney.B、Toupgradeitsequipment.C、Tocurbtheinflation.D、Topromotethedevelopment.A新闻中提到,希腊国家广播公司被关闭是为了省钱。
司马迁说《吕氏春秋》“此书所尚,以道德为标的,以无为为纲纪”。()
邪壅经络之痉证,如寒邪较甚,舌苔薄白,脉象浮紧,病属刚痉者,其最佳治法是
某企业近5年来承担过下列工程施工总承包,质量合格。其中符合二级资质标准的是()。
已发现的最大青铜器是()。
盐汽水:可乐
已知变量x与变量y之间存在着正相关,下列回归方程中哪个肯定是错的?()
企业系统规划(BSP)方法的目标是为企业信息系统建设提供一个
以下关系表达式中,其值为False的是
1 Computerpeopletalkalotabouttheneedforotherpeopletobecome"computer-literate",inotherwords,tolearntounders
最新回复
(
0
)