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unit-3-warming-upVIP免费

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Atoy?Ahandbag?Riddles(谜语):Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.DoyouknowwhoIam?abacusRiddles(谜语):Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?calculatorRiddles(谜语):Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.notebookcomputerDoyouknowwhoIam?Riddles(谜语):HowmuchdoyouknowHowmuchdoyouknowaboutacomputer???aboutacomputer???GivetheEnglishnameofthefollowingpicturesofthecomputercomponents(组件)CD/DVD-ROMCRTmonitorLCDmonitorLCDmonitorCPUharddiscchips/motherboardkeyboardmousemodemscannerprinterspeakerfloppydiscUSBflashdiscCD/DVD/VCDMP3player124356Labeleachpart1.monitor2.screen3.CD-ROM4.mouse5.keyboard6.harddisk1Amonitoris2Thescreenis3Akeyboardis4Amouseis5ACD-ROMis6Aharddiskis(a)thepartofacomputerthatstoresinformation.(b)thepartofthecomputerthatyoutypeon.(c)thepartofthecomputerthatlookslikeatelevision(d)somethingyouusetoclickonthings(files,etc.).(e)thepartofthemonitorthatyoulookat.(f)Themaindevicethatacomputerusestostoreinformation.Matchthewordswiththeirmeanings.Lookatthesepictures.Discusswhattheyhaveincommon.Predictwhatitisgoingtobeabout.What’snext?(Whatdotheyhaveincommon?)•Ithinkthat…•Inmyopinion…•Ibelievethat…•What’syourreason?•Whydoyouthinkso?1.Theycanbeusedforcalculating.2.Theycandealwithmathsproblems.3.Theyareourfriends.4.Theyareusefulandhelpful.DiscussionHowusefulcomputersare!schoolworkgamesemailsmusicandfilmschatinformationphotosshoppingInternetAskandanswerquestionsinpairs.1.usecomputerforschoolworkYouYourpartner2.playgamesonthecomputer3.sendemailstofriends4.surftheWebforfun5.downloadmusicandfilms6.chatonline7.searchforinformation8.lookatphotographs9.doshoppingonlineHowdoyouusecomputersandtheInternet?DebateIscomputersgoodorbadforhumanbeings?Forhavegreatpower;makeourlivesmorecolorfulandmoreconvenient;…Againstmakepeoplelazy;unhealthyinformation;pollutetheenvironment;…advantageswecancommunicatewithfriendslistentothemusicseefilms&watchnewsplaygamesdoshoppingsavealotoftimedoalotofusefulthingsDisadvantagesSomepeopleespeciallytheteenagersabandon(沉迷于)themselvestothecomputergamesandchattingontheInternet.Asaresult,theyhavelittletimetostudy.Somepeopleusethecomputerwrongly

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