计算机的中心是中央处理器

大学英语（高职财经类）精品课辅助教材Unitone-Unitten大学英语（高职财经类）精品课辅助教材Unitone-UnittenUnitOneI.UsefulWordsswitchonv.打开programn.程序instructionn.指令executev.执行describev.描绘electronicadj.电子的circuitn.电路II.KeySentences1.ThecentreofacomputerisCPU.计算机的中心是中央处理器。2.Wecan’timaginewhattheworldwouldbelikewithoutcomputers.没有电脑，我们无法相象世界会是什么样子。3.Acomputercancalculateataveryhighspeed..计算机能够以很高的速度进行运算。4.Onlywhenyouknowhowtoswitchiton,canyouusethecomputer.只有知道如何开机，你才能使用电脑。5.Computerscansolveproblemsforpeoplebycarryingoutinstructionsgiventothem.电脑执行人们输给的指令来解决问题。6.Underthecontroloftheprogram,computersevencandosomegreatthings.在程序的控制下，电脑甚至能够做出一些惊人的事情。7.Computershavecircuitswhichcanmakedecides.电脑上安装有做出各种决定的电路。III.SituationalDialogue你和你的一个朋友在谈论计算机，试着根据所给的情景完成下面的对话。A:Doyouthinkwhatacomputeris?B:Inmyopinion,itis_________________________(电子大脑).Itcan____________________(处理各种各样的问题).A:________________________________(你擅长使用它吗？).B:I’vepassedNationalComputerTestGrace-4.A:Thenyou’llbeeasytofindajoywith__________________（计算机证书）.IV.ReadingWhatisacomputer?Generallyspeaking,acomputerisanelectronicandmachineryequipment,whichhasmanyuses,suchasaccepting,storing,andrepresentinginformation.Itcanreplacepeopleindull,time-consuming,routinetasks．Computerscanstoreandprocessnotonlyletters－numbersandcharactersbutalsosounds，image,andinformationofotherforms．Thoughtheycannotmakesuggestionsforpeople,theycandocalculating,communicating,word-processing,informationsearchingandsomeothermanagement.Underthecontroloftheprogram,computersevencandosomegreatthings．Thereasonwhycomputerscanworkinaratherhighspeedisverysimple:Itisanelectronicma-chine．Forexample,assoonasyouturnontheswitchthelightgetslightatthesametime．Howfastthespeedofthecurrentis!Computersdovariouskindsofthingsina大学英语（高职财经类）精品课辅助教材Unitone-Unittenveryshorttime.Computersarepowerful．Theycansolveproblemsforpeoplebycarryingoutinstructionsgiventothem.Asequenceofinstructionsdescribinghowtoperformacertaintaskiscalledprogram.Beforetheprogramsinacomputercanbeexecuted,theymustbechangedintoalimitedsetofsimpleinstructions．Andthentheelectroniccircuitsofeachcomputercanrecognizeanddirectlyexecutethem.Computershavecircuitswhichcanmakedecides．Therefore,theycansolveaseriesofproblemsandmakehundreds,eventhousands,oflogicaldecisionswithoutbecomingtiredorbored.UnitTwoI.UsefulWordsvariousadj.各种各样的inventv.发明separatev.分离abbreviationn.缩写systemn.系统staten.状态convenientadj.方便的environmentn.环境II.KeySentences1.MasteringEnglishwellisveryimportanttocomputerlearning.掌握好英语对于学习电脑知识很重要。2.ManycomputerinstructionsarewrittenintheabbreviationsofEnglishwords.电脑中的很多命令使用的是英语单词的缩写。3.RENisashortformfortheinstructionofrename。REN是rename命令的简写形式.4.DoyouknowhowtocopythefilefromDiscAtoDiscB?你知道如何把这个文件从A盘复制到B盘吗?5.UnderthestateofDos,weusetheinstructionofdirtolistallthedirectorieswewant.在DOS状态下，我们使用DIR命令来列出我们想要的目录。6.IstheWindowssystemmoreconvenientthanDossystem?Windows系统比Dos系统更方便使用吗？7.Haveyouseenthecomputerwithoutthemouseandkeyboard?你见过不使用鼠标和键盘的电脑吗？III.SituationalSupply汉密尔顿先生杨先生在谈论电脑和英语的关系，根据情景完成对话。Y:doyouthinkEnglishisimportanttocomputer?H:Well,____________________.(我认为很重要)Y:Couldyougivemesomevividexamples?H:Sure.______________________.(世界上第一台电脑出现在美国)Y:Well,Americanshaveinventedalotofthings.H:Also,_________________________.(很多命令和程序是英语写的)Y:IfonlythecomputerhadbeeninventedbyChinese!Youknow….H:Iknow__________________.(你的意思)大学英语（高职财经类）精品课辅助教材Unitone-UnittenY:butIamnotgoodatEnglishandI’llstudyitharderinorderto__________.(学好电脑)IV.ReadingThefirstcomputerintheworld,ENIAC,wasinventedinU.S.A.Therefore,Englishlanguagehasbeenusedasabridgeofcommunicationbetweenhumansandcomputerseversincethefirstdaywhenthecomputerappeared.WecansaythatcomputerandEnglisharethetwins,whocan’tbeseparatedfromeachother.Thefirstsentence,thefirstinstruction,thefirstmarkandvariousprogramsareallwritteninEnglishwordsortheirabbreviations.Whenyouswitchonthecomputer,allsortsofinformationatfirstappearingonthescreenisEnglish.UnderthestateofDOSsystem,allkindsofinstructionsarewritteninEnglishwordsortheirabbreviations.Forinstance,wehavecopy,dir,andren.Copyisafullword.Dirisshortfordirectoryandrenisshortforrename.SomelargecomputercompaniessuchasIBM,APPLEandINTELareinU.S.A.ComputerswerebornintheenvironmentofEnglish.Thepackage,useinstructionsandsoftwaredesignswereconnectedwithEnglishatthebeginning.Inaddition,someoperationsystemsproducedbyMicrosoftsuchasWindows95,98and2000areusingEnglish.AllsortsofinformationandgamessoftwarearewritteninEnglish.IfyoumasterEnglishwell,youcanusethecomputermoreeasilythanthosewhodon’t.Itdoesn’tnecessarilymeanthatyouareatalentforcomputewhenyouaregoodatEnglish.SomehackerswhohaveinventedshockingcomputervirusesarenotthegoodEnglishlearners.UnitThreeI.UsefulWordscomputationn.运算reductionn.减少volumen.体积replacev.替代originaladj.原始的，原来的，起初的II.KeySentences1.Whenwasthefirstcomputerintheworldbuilt?世界上第一台电脑是什么时候建造的？2.Couldyoutalksomethingaboutthedevelopmentofcomputers?你能谈谈电脑的发展情况吗？3.Thedevelopmentofcomputerscomeswiththeimprovementoftheirouterstyles.电脑的发展伴随着外观的改善。4.Thedevelopmentofcomputerscomeswiththeincreaseofcomputation.电脑的发展伴随着运