學必求其心得，業(yè)必貴于專精學必求其心得，業(yè)必貴于專精學必求其心得，業(yè)必貴于專精M7U1ReadingLearningaims:1.知識目標：1）、Todevelopstudents’readinginterestandenhancetheirreadingabilities.2）、Togainsomeinformationabouttheelectricalandelectronicdevicesandimprovereadingskills.2.能力目標：1）、Togaininformationaboutthehistory,thecurrentsituationandthefuturedevelopmentofTVandsounddevices.2）、Tofindouthowtoquicklyobtaininformationbyunderstandingheading一、前置性補償Fastreading（Readthetextquicklyandanswerthefollowingquestions）1.WhodevelopedthesystemusedformostearlyTVbroadcasts?___________________________________________________________________________2。Whomadethefirstrecordingofahumanvoice?___________________________________________________________________________3。Whatweredevelopedbythelate1960s？___________________________________________________________________________二、新知探究I。TrueorFalse（C1ofp36）II.Task-basedreading(Readthetextandfillineachblankwithaproperword）TheevolutionofvideoandsounddevicesTelevisionEarlyhistory◆In1925,thefirstpublicTVbroadcastsweremadeintheUSA?！鬒n1928，thefirstlong-distanceTVbroadcastwasmade.◆Manypeoplemade(1）__________tothedevelopmentofTV?！鬞heyearsbetween1928and1951(2）__________thedevelopmentofcolorTV.TheModernage◆In1962，satelliteswereusedtobroadcastTV.◆Peoplewholivefarawayfromcitieshave（3）__________toTVsignalswiththehelpofsatellitedishes。SoundandvideoEarlyhistoryofsoundrecorders◆In1877，Edisonfirst(4）__________ahumanvoice?！鬍mileBerlinerinventedarecordplayerusingdiscsas（5)__________totubes。Soundandvideorecorders◆In1928，thefirsttaperecordersweremadeinGermany?！鬒ntheearly1950s,taperecordersbeganusingplastictapeinsteadof(6)__________orpapertape。Soundandvideogodigital◆In1982,thefirstCDsweremade（7）__________?！鬒n1993，theVCDwasborn,twoyears（8)__________whichtheDVDwasinvented。Thefuture◆NowadayssoundandvideocanbestoredonaPC,ontheInternet,orusingsomeformof（9)__________storage.◆Technologyischangingfast,anditsfutureis(10）__________ourimagination。III。ReadingComprehension1。Whenandwherewasthefirstlong-distanceTVbroadcastmade?A.In1925intheUSA. B。In1926intheUK。C。In1928intheUK。 D。In1928betweentheUSAandtheUK.2。WhomightbetheinventorofthefirstTV？A。VladimirZworykinfromRussia。 B.PhiloFarnsworthintheUSA。C.JohnLogieBairdfromtheUK D.Itremainsuncertain.3.Whatisthewriter’sattitudetowardthedevelopmentofthetechnologyinthefuture?A.Negative B.Positive C.Indifferent D。Neutral4.Howisthepassageorganized________________.A。byparagraphs B。inchronologicalorderC。byconcepts D.bysub-topics三、形成性檢測VI。Studythetextcarefullyandcompletethefollowingsentences（onewordineachblank)1.很多背景不同的人對電視的發(fā)展做出了貢獻。Manydifferentpeople________________thedevelopmentofTV.2.最早的留聲機必須手搖上發(fā)條，而且只能播放兩分鐘長的錄音.Thefirstrecordplayershadtobe________________byhandandonlyplayedrecords________weretwominuteslong.3.隨著數(shù)字技術的發(fā)展，聲音和視頻現(xiàn)在可以儲存在個人電腦上、互聯(lián)網(wǎng)上，或者使用某種形式的便攜式存儲設備儲存。________________________ofdigitaltechnology，soundandvideocannowbestoredonaPC，ontheInternet，orusingsomeformofportablestorage.4。技術變革得太快,大多數(shù)人難以跟上。Technologyisnowchangingfaster________mostpeoplecan________________________.VII。Fillineachblankwithaproperwordandthenenjoythefollowingsentences.1。It________________________（直到…才）1938________thefirstcolorTVprogrammewasbroadcast.2.TheyalsomakeTV________________(可以接近的)people________________________________(遠離)fromcities,andsatellitedishescanoftenbeseen________(分布)throughoutthecountrysideandremoteareas3.However，mostpeoplestill________________（從…受益)satelliteTV，________localTVcompaniesbroadcastthesignals________theygetfromsatellitereceiverstothepopulation________________（居住