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Unit3ComputersReading,Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydontlikemenow.DoyouknowwhoIam?,abacus,Guess,Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?,calculator,Guess,Itisamachine,whichyoucanusetotypeyourhomework,drawpictures,playgames,watchmovies,listentomusic,communicatewithyourfriends,gatherinformationWhoamI?,ComputerPC,Itisakindofcomputerwhichcanbetakenconveniently(方便地)likeanotebook.DoyouknowwhoIam?,Alaptop,CPU(centralprocessingUnit)中央处理器,chips主板,monitor显示器,keyboard键盘,mouse鼠标,speaker音箱,Componentsofacomputer,Whatsnext?,abacus,calculator,Hugecomputer,desktop,laptop,PDA,Robot,Historyofcomputers,schoolworkgamesemailsmusicandfilmschatinformationphotosshopping,Ourlifehaschanged!,Howmuchdoyouknowaboutcomputers?Lookatthephotobelowandcompletethesentenceswiththecorrectnames.,Whatdoyouknowabout?,The_showswordsandpictures.Weusethe_fortyping.The“brain”ofacomputerisinthe_.Wemovethe_tocontrolthecomputer.Wehearsoundformthe_.,monitor,keyboard,mainunit,mouse,speakers,Lookatthepictures,thetitleandthesub-headingsofthearticleonpage35.Thentick()thefactsthatthearticleprobablytalksabout.,Beforeyouread,1.Computersaregettingsmallerandbetter.2.Computerscandoimportantjobslikeflyingplanes.3.Computersmayworkasdoctors.4.Computersareexpensive.,X,C1Thewordsinitalicsexplainthemeaningsofsomewordsonpage35.Findthesewordstocompletethesentences.Changetheirformsifnecessary.,Vocabulary,Ifsomethingisverysmall,itis_.(line5)Someyoungpeoplealwaysneedhelpfromtheirparents.Theyshouldlearnto_themselves.(line8)Wehadfunandlearntsomethingnewaswell.Wehadagoodtime._,welearntalot.(line14)Whenwemakeamachinework,we_it.(line16),tiny,operate,Inaddition,dependon,ComputerFacts,SmallerandbetterInthe1940s,thefirstcomputerswerebiggerthancars.Nowcomputersarebecomingsmallerandbetter.Somecomputersaretiny.Youmaybeunawareofthem.ThereisprobablyoneinsideyourTVorwashingmachine.Youdependoncomputersmorethanyourealize.,Whatcanwedowithcomputers?Wecanusecomputerstocalculate.Theycancalculateatafasterspendthanwecanandalmostnevergivewronganswers.Wecanalsotypeanddrawthingswiththem.Inaddition,computerscandoimportantjobslikeoperatingrailwaysandflyingplanesandspaceships.,Isacomputerclevererthanme?Theansweris“No.Yourbraincanproducenewideasbutcomputerscannot.However,onedaycomputersmaybeabletodoabetterjobthanhumanbeings.Forexample,theymaybebetterthandoctorsatdoingtheirjob.Whatwillhappentousifcomputerscandoallourjobs?Willwehave
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