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M7Unit1

Livingwithtechnology1/28

refrigerator2/28washingmachine3/28Airconditioner4/28

microwaveoven

vacuumcleaner5/28desktoplaptop6/28Theevolutionofvideoandsounddevices7/28Readingstrategy:understandingheadingsIfyouwanttoobtainsomespecificinformation,forinstance,informationaboutsatellite

TV,fromthispassageasfastaspossible,whatwillyoudo?Lookingatheadingsandsubtitles（副标题）8/28______historyofTV(inorderof______)Earlyhistoryof____________________________godigitalTVAudiodevicesEarlytimemodernage:CableTV,satelliteTV,digitalTV,…

The_______soundrecordersSoundandvideoFastreading9/281.ColorTVbecamepopularwithinjustafewyearsafteritwasinvented.()2.PeoplewithoutsatellitedishesdonotbenefitatallfromsatelliteTVbroadcasts.()Reading(PartC1):F（12-14）F（24）10/283.Someofthefirsttaperecordersusedplastictapetorecordon.()4.RecordsandcassettesdonotofferasgoodasoundqualityasCDs.()5.Newtechnologywillsoonmakemanyofthethingstalkedaboutinthearticleoutofdate.()T（43-45）F（28）T(49-50)11/28TVPartOne:（L1-25)Carefulreading12/28black-and-whiteTV13/28MakeatimelineofthedevelopmentofTV1925ThefirstpublicTVbroadcastweremadeintheUSA1928Long-distanceTVbroadcastwasmadebetweentheUKandtheUSA.Regularpublicbroadcastingbegan.1938ThefirstcolorTVprogramwasbroadcast1951RegularcolorTVbroadcastsbeganintheUSA14/28JohnLogieBairdMostearlyTVbroadcastsweremadeusinghissystem.However,hissystemwasvery________andhadmany____________.primitivedrawbacksEarlyhistory(1-17)15/28PhiloFarnsworth————————Hemadeimportant______________inthedevelopmentofTV.ModernTVsusemanyofthe___________firstdiscoveredbyhim.breakthroughsprinciples16/281962in,SatelliteswereusedtobroadcastTVTheModernage(19-25)SatellitesmakeTV_________topeoplewholivefarawayfromcities.accessible17/28SatelliteTVdishesTheycanoftenbeseen

throughoutthecountrysideandremoteareas.However,mostpeoplebenefit______satelliteTV,aslocalTVcompaniesbroadcastthe_______tothepopulationlivingnearby.fromsignalsdistributed18/28PartTwo:(L26-52)AudioDevices19/28Earlyhistoryofsounddevices(26-32)1877:ThomasEdisonmadethefirstrecordingofahumanvoice.20/28tubes

Earlyrecordplayersused______torecordon.21/28In1887,EmileBerlinerused_______asalternativestotubes.discs22/28taperecordersSoundandvideodevices(33-41)

In1928,thefirst_______________usedtocopysoundwereinGermany.Mostearlyrecordersemployed__________torecordon.steeltape23/28_____________________

weredevelopedbythe________late1960sPortablecassetteplayer24/28VideorecordersBythelate1970s,videorecordersforhomeusewereintroduced.25/28___________(1982)Digitalera数字时代_______(1993)_______(1995)VCDDVDthefirstCD

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