高中英语 Unit 3 Section I Warming Up Reading Pre reading课件 新人教版必修2.ppt

unit3gomputers section warmingup reading pre reading step4 step3 step2 step1 step5 1 inourdailylife thecomputerandtheinternetplayanimportantrole whatwaysdoyouthinkthecomputercanhelpus 2 whodoyouthinkisthefounderoftheworldwideweb pleasereadthefollowingpassagetogettheanswer mostpeoplehaveneverheardoftimberners lee heisnotnearlyasrichorfamousasmarcandreessen whoisthefounderofnetscape orbillgates whosenamehasbecomeawell knownword berners lee whoworksinasmallofficeatthemassachusettsinstituteoftechnology isthecreatoroftheworldwideweb thecreationofthewebissoimportantthatsomepeoplecompareberners leetojohanngutenberg whoinventedprintingbymovabletype 活字 inthefifteenthcentury berners leewasborninenglandin1955 hisparents whohelpeddesigntheworld sfirstcommercially 商业地 availablecomputer gavehimagreatloveofmathematicsandlearning in1980 berners leewenttoworkatcern aphysicslaboratoryingeneva switzerland wherehehadalotofmaterialtolearnquickly hehadapoormemoryforfactsandwantedtofindawaytohelphimkeeptrack 轨道 of thingshecouldn tremember heinventedasoftwareprogramthatallowedhimtocreateadocumentthathadlinkstootherdocuments hecontinuedtodevelophisideathroughthe1980s hewantedtofindawaytoconnecttheknowledgeandcreativityofpeopleallovertheworld in1991 hisprojectbecameknownastheworldwideweb thenumberofinternetusersstartedtogrowquickly however berners leeisnotcompletelyhappywiththewaythewebhasdeveloped hethinksithasbecomeapassivetoolforsomanypeople notthetoolforcreativitythathehadimagined 1 lookatthefollowingpicture canyounamesomepartsofthecomputer 答案 1 hostcomputer 2 monitor 3 screen 4 keyboard 5 mouse 6 speaker 2 matchthewordswiththeirmeanings 1 amonitorisa thepartofacomputerthatstoresinformation 2 thescreenisb thepartofthecomputerthatyoutypeon 3 akeyboardisc thepartofthecomputerthatlookslikeatelevision 4 amouseisd somethingyouusetoclickonthings files etc 5 acd romise thepartofthemonitorthatyoulookat 6 aharddiskisf themaindevicethatacomputerusestostoreinformation 答案 1 c 2 e 3 b 4 d 5 a 6 f scanthetextandthenchoosethebestansweraccordingtothetext 1 in1936 alanturingwroteabookabout a howtosimplifydifficultsumsb howthecomputercouldbemadetoworkasa universalmachine c howtobuildananalyticalmachined howtochangethecomputer sshape答案 b 2 whydidthecomputertotallychangeitsshape a becausethecomputercoulddomanythings b becausethecomputercouldsimplifysums c becauseitsmemoryimproved d becausethecomputerneverforgotanything 答案 c 3 howlongdidittakebeforethecomputerwasbuiltasananalyticalmachine a 500years b 300years c 100years d 200years 答案 d4 accordingtothelastparagraph whichwasnotmentionedintheuseofthecomputer a mobilephones b rockets c bikes d robots 答案 c 5 howcanyouunderstandtheunderlinedword sincethe1970smanynewapplicationshavebeenfoundforme a aformalrequestforsth b thepracticaluseofsth c anactofspreadingsth d anactofmakingarule答案 b 1 readthetextandthendothefollowingexercises writeoutthemainideaofthetext thisisashortoftheofcomputers 2 lookattheseinventions canyouputtheminanorderaccordingtothetimewhentheyappeared history development 答案 dafbce 3 readthetextandthenfillintheblanks overtimeihavebeenchanged quitealot universalmachine tubes transistors worldwideweb the1970s communication spacerockets fillintheblanksaccordingtothetext ibeganasa1 machinein1642 ittooknearlytwohundredyears2 iwasbuiltasananalyticalmachine ibecamea universalmachine in1936to3 anymathematicalproblem iwasverybigatonetime however astime4 iwasmadesmallerandsmaller iwasgivenafamily5 byanetworkintheearly1960s iwasableto6 myknowledgewithothers7 theworldwideweb calculating before solve wentby connected share through ihavebeenwidelyusedinmanyfields suchasincommunication 8 tradeandmedical9 ihavealsobeenputintorobotsandspacerocketsto10 themoonandmars i mgladiamadevotedfriendandhelperofthehumanrace finance operations explore everycoinhastwosides sodoestheinternet talkabouttheadvantagesanddisadvantagesabouttheinternet 参考答案 advantages 1 nomatterhowfaritis wecancommunicatewithourfriendsbyinternet 2 wecancollectrelatedinformationforourlessons 3 wecanwatchmoviesandlistentomusic whichmakesourlifeinterestingandcolourful 4 wecandoshoppingontheinternet disadvantages 1 ifweplaycomputersforalongtime itisbadforoureyesandhealth 2 itisawasteoftimeandmoney 3 makepeopleisolatefromtheirfriends 4 somepeopleespeciallytheteenagersarecrazyaboutthecomputergamesandchattingontheinternet asaresult theyhavelittletimetostudy 5