牛津英语模块七第一单元reading.ppt

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M7Unit1

Livingwithtechnology

refrigerator

washingmachine

Airconditioner

microwaveovenvacuumcleaner

desktoplaptop

Theevolutionofvideoandsounddevices

Readingstrategy:understandingheadingsIfyouwanttoobtainsomespecificinformation,forinstance,informationaboutsatelliteTV,fromthispassageasfastaspossible,whatwillyoudo?Lookingatsubtitles(副标题)

______historyofTV(inorderof______)Earlyhistoryof____________________________goesdigitalTVAudiodevicesEarlytimemodernage:CableTV,satelliteTV,digitalTV,…The_______soundrecordersSoundandvideoFastreading

TVPartOne:(L1-25)Carefulreading

black-and-whiteTV

MakeatimelineofthedevelopmentofTV1925ThefirstpublicTVbroadcastweremadeintheUSA1928Long-distanceTVbroadcastwasmadebetweentheUKandtheUSA.Regularpublicbroadcastingbegan.1938ThefirstcolorTVprogramwasbroadcast1951RegularcolorTVbroadcastsbeganintheUSA

JohnLogieBairdMostearlyTVbroadcastsweremadeusinghissystem.However,hissystemwasvery________andhadmany____________.primitivedrawbacksEarlyhistory(1-17)

PhiloFarnsworth————————Hemadeimportant______________inthedevelopmentofTV.ModernTVsusemanyofthe___________firstdiscoveredbyhim.breakthroughsprinciples

1962SatelliteswereusedtobroadcastTVTheModernage(19-25)SatellitesmakeTV_________topeoplewholivefarawayfromcities.accessible

SatelliteTVdishesTheycanoftenbeseenthroughoutthecountrysideandremoteareas.However,mostpeoplebenefit______satelliteTV,aslocalTVcompaniesbroadcastthe_______tothepopulationlivingnearby.fromsignalsdistributed

PartTwo:(L26-52)AudioDevices

Earlyhistoryofsounddevices(26-32)1877:ThomasEdisonmadethefirstrecordingofahumanvoice.

tubesEarlyrecordplayersused______torecordon.

Heuseddiscsasalternativestotubes.Whoshe?EmileBeriner

tape

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