安徽工程大学《大学英语四》(重修)练习四

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1、《大学英语四》（重修）练习四PartLReadingcomprehensionDirections:Therearetwopassagesinthispart.Eachpassageisfollowedby5questions,withfourchoicesgivenforeachquestion.Pleasedecideonthebestchoice.Passage1Television,themodernwonderofelectronics,bringstheworldintoyourownhomeinsightandsound.Andtheword"te

2、levision"meansseeingfar.Televisionworksinmuchthesamewayasradio.Inradio,soundischangedintoelectromagneticwaveswhicharesentthroughtheair.Experimentsleadingtomoderntelevisiontookplacemorethanahundredyearsago.Bythe1920sinventorsandresearcheshadturnedtheearlytheoriesintoworkingmodels.Yeti

3、ttookanotherthirtyyearsforTVtobecomeindustry.TheinfluenceofTVonthelifeofthepeopleisincalculable:itcaninfluencetheirthoughtsandtheirwayoflife.Itcanalsoaddtotheirstoreofknowledge・EducationalTVstationsofferteachinginvarioussubjects.SomehospitalsuseTVformedicalstudentstogetclose-upviewso

4、foperations・Atfirsttelevisionprogramswerebroadcastinblack-and-white・Withthedevelopmentofscienceandtechnology,theproblemofhowtotelecasttheminfullcolorwassolvedandbythemiddle1960sthenationalnetworkswerebroadcastingmostoftheirprogramsincolo匚Theprogramsthatpeoplewatcharcnotonlylocalandna

5、tionalones・Sincethelaunchingofthefirstcommunicationssatellite,moreandmoreprogramsaretelecastTive"fromallovertheworld.PeopleinSanFranciscowereabletowatchthe1964OlympicGamesinTokyo.Andlivetelecastsnowcomefromouterspace・In1969,thefirstastronautstolandonthemoontelevisedtheirhistoric"moon

6、walk”toviewersontheearth.Sincethen,astronautshaveregularlysenttelecasttotheearth・1.ThelaunchingofcommunicationssatellitesmadeitpossibleforpeopleinSanFranciscotoA.getclose-upviewsofoperationsB.storeknowledgeC・watchthe1964OlympicGamesinTokyoD.watchnationalprograms2・Thedevelopmentofscie

7、nceandtechnologymadeitpossiblefortelevisionprogramstoA.betelecastinfullcolorB.betelecastinSanFranciscoC.betelecastinTokyoD.bctelecastinblank-and-white3.Theword"incalculable5meansA.easytotellB.verygreatC.difficulttotellD.verysmall4.Televisionissaidtobethemodernwonderofelectronics,beca

8、useA.itinflu