Module5High-techLivingPartOneTeachingDesignGoalsToimprovereadingabilityformainideasanddetailsTolearnsomeusefulwordsandexpressionsinthetextTolearntowriteareportToknowaboutsomenetlanguagePeriod1Introductionandreading(High-techLiving)ProceduresStep1:Warmingup1.Describetheitemsinthepictures(Page57)andwhattheyareusedforKeysforreference:Mp3:listentomusictorelaxoneselfPDA:tellpeoplewhattodoeveryhourMobilephone:stayintouchwithfriends/familiesXbox:playgames,listentomusicComputer:helpfultopeople’sstudyandwork;getinformationDigitalcamera:takeasmanyphotosasyoulikewithoutaroll2.Warmingupbydiscussingabouttheadvantagesanddisadvantagesofusingmobilephonesandcomputers.WorkingroupsKeysforreference:advantagesDisadvantagesCellphonesTheyareportable;keepintouchwithothers;savetimeandenergy;callforhelpwhenintrouble;nolongerexpensive…Forstudents,disturblessons;wastetimeandmoney;bebadforhealth;botherpeople’slife…computersHelpworkorstudyfaster;sende-mails;lookupinformation;internetshopping;playgames;listentomusic…Expensive;wastetimeinplayinggames;badforhealth;causeinternetcrimes…3.WarmingupbywordsstudyPart5.andPart6.onPage60.Step2:Reading1.Leading-inAsweknow,scienceandtechnologyaredevelopingveryfast.Computersarewidelyusedinmanyfields.Nowtheyaregoingintomoreandmorefamilies.I’dliketoaskyouafewquestions:1.Isthereacomputerinyourfamily?2.Whendidyoutouchacomputerforthefirsttime?用心爱心专心3.Doyoulikeplayingcomputergames?4.Doyouwanttobeacomputerengineer?2.ListeningListentothetapeandtickoutthefollowingwordsyouhearinthepassage.chatcomputereatingemailinternetlessonsmobilephonesportsteenagertechnologytelevisionworkKeys:computeremailinternetmobilephonetechnologyworkteenager3.FastreadingReadthefirstpartofthetext,andchoosethebestsummary.(onP59)Key:B4.DetailedinformationReadthefollowingsentences,andtellTrue(T)orFalse(F)accordingtothetext.1.YanNuohasearnedalotofmoneybyprovidingtechnologysupporttoMicrosoftsoftwareusersthisyear.2.Yanisverybusyeveryday,sohehasnotimetorelax.3.ItisprobableforYanNuotogotocollegeinAmerica.4.Yan’steacherisdisappointedathisbeingintocomputers.5.ThewriterthinkshighlyofYan’senthusiasmforcomputers.Keys:FFTFT5.WorkinpairsonPage59Step3:ReadingpracticeDigitalcameraThenewlyinventeddigitalcameraisfascinating:youcantakepictureswithoutfilm.YoucantransferandexhibityourpicturegloballyinafewsecondsthroughtheInternet.Theimagestoredinaharddrivewillneverwearoutlikethetraditionalphotos.Digitalcamerasalsosatisfytheimpatientphotographerbyallowingthemtoviewtheirmasterpieceinrealtime.Unliketheimagesoftraditionalcamerasformedbychemicalreaction,thedigitalcameraworksasanimagedigitizeritself.It’smadeofCCD(charge-coupleddevice),asmallgridoftinylight-sensitivecells.Whenstruckbylight,eachcellsendsoutanelectricalsignalwhosewaveformcharacteristicsvarydependingontheintensity（强度）oflight.Thesignalfromeachcellischangedintoadigitalvalueandstoredinthecamera’smemoryoronanelectronicstoragemedium.A“picture”isreducedtoaverylonglistofnumberswaitingtobeconvertedbackintovisualform.Processedthroughacomputer,eachvaluebecomesapixel;pixelsarereassembledintheoriginalgridpatternanddisplayedorprinted.Theimageresolution（分辨率）ofadigitalcameradependsontheCCD.MorecellsontheCCDmeanmorepixelsontheimage,whichgivesgreaterdetailandhigherimageresolution.Theearlydigitalcamerahadresolutiononlyupto400pixelsperimage,costse...
