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M7Unit1LivingwithtechnologyCanyouimaginelifewithoutthem?Freetalk:Whatcanthenewtechnologybeoftenusedinourlives?TechnologyUsageComputerTheInternetCell-phoneasatypewriter/taperecorder/VCDplayer/notebook/calendar/telephone/calculatorasalibrary/magazine/TV/telephone/bank/storeasatelephone/watch/calendar/camera/computerTVsaudiodevicesReading:TheevolutionofvideoandsounddevicesHowisthepassageorganized___________________.A.byparagraphsB.inchronological（时间的）orderC.byconceptsD.bysubtitlesFast-reading:The(1)ofvideoandsounddevicesTVEarly(2)ofTVThemodernage:(3)TV(in(4)order)(5)andsounddevicesEarlyhistoryofsoundrecorders(6)andvideorecordersSoundandvideogo(7)ThefutureStructureofthepassagePartITVPartIISoundandvideodevicesCarefulReading??PartI1.Whenandwherewasthefirstlong-distanceTVbroadcastmade?2.WhomightbetheinventorofthefirstTV?A.EmileBerlinerfromGermanyB.PhiloFarnsworthintheUSA.C.JohnLogieBairdintheUKD.Itremainsuncertain.PartIIFromthehistoryofsoundandvideorecorders,wecanknowexceptthat_________.A.Theyarebecomingsmallerandsmallerinsize.B.Technologyischangingfasterthanmostpeoplecankeeppacewith.C.Thedigitaldevicesarebetterthantraditionaldevices.D.WecansurelyforeseewhatthefutureTechnologywillbringus.Careful-reading:specificyearstheeventsYearEvent1877Thefirstrecordingofahumanvoicewasmade.188719251929193819621967198219931995YearEvent1877Thefirstrecordingofahumanvoicewasmade.188719251929EmileBerlinerinventedarecordplayerthatuseddiscstorecordon.ThefirstpublicTVbroadcastsweremade,intheUSA.RegularpublicbroadcastingbeganinLondon.1938196219671982ThefirstcolourTVprogramewasbroadcast.SatelliteswereusedtobroadcastTV.RegularcolourTVbroadcastsbeganintheUK.ThefirstCDsweremadeavailable.YearEvent19931995TheDVDwasinvented.TheVCDwasborn.advantagesdisadvantagesDiscussion:♠meetpeople’sneeds.♠haveimprovedpeople’slivestosomedegree.♦radiationfromthemmaybeharmfultopeople’shealth.♦generatelargeamountofwaste,whichisharmfultotheenvironment.tosumup