unit 4 topic 3 section c

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1、Unit4AmazingScienceTopic3Chinaisthethirdnationthatsentapersonintospace.SectionCWhatarethecomputersusedfor?1a1.Tickthefieldsweusethecomputerin.educationbusinessindustrycommunicationdailylifemedicalcareentertainmentsportsDoctorscanfinddiseaseseasilywiththehelpofcomputers.Canyougiveanexampleoftheus

2、eofthecomputerinoneofthefieldsabove?Inspace,computershavebeenusedtocontrolthespeedanddirectionofaspaceship.Whatisthepassageabout?TheImportanceofComputersUnderlinethetopicsentenceofeachparagraph.1.SincecomputerswereinventedintheUSAinthe1950s,theyhavebecomeveryimportantinmanyareasofworkandleisure.2.

3、SincetheInternetcameintobeing,people’slivesathomehavebeenchanged,too.3.Computershaveimprovedourlives,buttheyhavebroughtproblems,too.PlaceTheusageofcomputersInspaceInhospitalsInfactoriesInbusinesscontrolthespeedanddirectionfinddiseaseseasilyandsolveotherproblemsdodangerousworkusedtoplaceandcancelord

4、ersParagraph1Thereisnodoubtthatwewillbesuccessful.Idon'tdoubtthattheywillbeabletosolvetheproblems.doubtn.&v.怀疑，疑惑(2)doubt(vt.)+从句(3)doubt(vi.)+about/ofDoubtisthekeytoknowledge.Thereisnoreasontodoubtofhishonesty.Idoubtwhether/ifhe'llchangehismind.(1)doubt(n.)Paragraph11.Thereisnodoubtthatcomputersar

5、everyusefulintechnologyandbusiness.毫无疑问电脑在技术和贸易业都非常有用。2.Forexample,tinycomputerswhichareinsidepatients’bodiescankeeptheirheartsbeatingnormally.例如，病人体内植入微电脑能帮助病人的心脏正常搏动。64英寸超大型（Huge）32英寸大型（Large）16英寸中型（Medium）8英寸小型（Small）4英寸超小型（Tiny）tinyverysmallinsizeadj.极小的，微小的atinygirlParagraph1prep.在……内adv.在里面La

6、nguagepoints3.Thewholeworldisconnected.网络连接了全世界。connectv.连接connectionn.关系，联系1.connectAwithB使A与B连接2.connectsth.(tosth.)使电、气、水等接通3.connectsb./sth.(withsb./sth.)与……有联系，把……联系起来Paragraph2comeintobeingmoreandmorewatchmoviesthankstodobusinessinsteadofchatonlinemaketheworldsmaller做买卖形成，产生越来越多看电影代替网上聊天使世界更小

7、多亏，由于Paragraph21.Forinstance,ifweworkoncomputerstoolong,wemaygetheadachesorsoreeyes.比如：如果我们使用的电脑工作的时间太长，我们就会头昏眼花。forinstance=forexample用来举例说明某一论点或情况，一般只举同类人或物中的“一个”为例。suchas用来列举事物时，一般列举同类人或事物中的几个例子。E.g.（1）M