全国职称英语等级考试试题（理工类）

第一部分阅读理解(75分) Passage1 CATVisashortwayofsayingcommunityantenna(天线)television.Butcabletelevisionisthetermmostpeopleuse.CabletelevisionallowsviewerstoreceiveTVprogramsthattheycannotpickupwiththeirregularantennas. Televisionsignalsdonotfollowthecurve(曲线)oftheearth.Theytravelinstraightlinesinalldirections.SignalsfromaTVstationmovetowardthehorizon(水平线)andthengointospace.Ifyouliveonlyafewmilesfromastation,youmaynotgetanypictureatall. CATVbeganin1948.PeopleinplacesfarfromTVstationssharedthecostofputtinguphighantennas.Acommunityantennawasusuallyplacedonahill,amountain,oronahightower.TheantennapickedupTVsignalsandfedthemintoasmalllocalstation.Fromthestation,thickwirescalledcablesranouttonearbyhomes.Eachpersonusingthecablepaidamonthlycharge. CATVworkedwell,andsoonnewuseswerefoundforit.Localstationscouldfeedprogramsintoemptychannelsthatwerenotinuse.Peoplealongthecablecouldhavelocalnews,weatherreports,andfarmandschoolnewsatnoextracharge. Today,cabletelevisionhasmovedintocities.Itbringsinextraprogramsthatcityviewerswithregularantennascannotsee.Itisalsousedinmanyclassroomsthroughoutthecountry. 1.Fromthefirstparagraphweknowthat________. ○A.mostpeopleusecabletelevision ○Bmunityantennaisanothernameforregularantenna ○C.acommunityantennaisusedforcabletelevision ○D.regularantennascannotpickupTVsignalsprograms 2.Ofthefollowing,whichisNOTthewayTVsignalstravel ○A.Inacurve. ○B.Inastraightline. ○C.Inalldirection. ○D.Towardthehorizon. 3.CableTVisbecomingmoreandpopularbecause_____________. ○A.itisfreeofcharge ○B.itcanprovidemoreprograms ○C.itprovidesallTVusersgoodpictures ○D.TVsetswithregularantennascanalsohaveagoodreceptionthroughCATV 4.Onthewhole,thispassageisabout________. ○A.howtoputuphighantennas ○B.awayofpickingupbetterTVprograms ○C.howtousetheemptychannelsonyourTVset ○D.thewaythatTVsignalsaresent 5.Fromthepassagewecaninferthat__________. ○A.TVhasbeguntobeusedforeducationalpurposes ○B.thereisnochargeforCATV ○C.cableTVcannotbeusedinmountainousareas ○D.antennasforcableTVareusuallyputupinthecenterofacommunity Passage2 Inearliesttimes,menconsideredlightningtobeoneofthegreatmysteriesofnature.Someancientpeoplebelievedthatlightningandthunderweretheweaponsofthegods. Inreality,lightningisaflowofelectricityformedhighabovetheearth.Asingleflashoflightning1.6kilometerslonghasenoughelectricitytolightonemillionlightbulbs. TheAmericanscientistandstatesman,BenjaminFranklin,wasthefirsttoshowtheconnectionbetweenelectricityandlightningin1752.Inthesameyearhealsobuiltthefirstlightningrod.