一道初中英语阅读试题
CATV
CATVisashortwaysaying“communityantenna(公用天线)television”.But“cable
television”isthenamemostpeopleuse.Cabletelevisionallowsviewers(观众)toreceiveTV
programsthattheycannotpickupwiththeirordinaryantenna.
Televisionsignals(信号)donotfollowthecurve(曲线)oftheearth.Theytravelinstraightlinesinalldirections.SignalsfromaTVstationmovetowardsthehorizon(水平线)andthengointospace.IfyouliveonlyafewmilesfromaTVstation,youmaygetagoodpictureonyourset.Butifyoulivemorethan50milesfromastation,youmaynotgetanypicturedatall.
CATVbeganin1948.PeopleinplacesfarfromTVstationshadtopayforputtinguphighantennas.Acommunityantennawasusuallyplacedonahill,amountainoronahightower.TheantennapickedupTVsignalsandfedthemintoasmalllocal(当地的)station.Fromthestation,thickwirescalledcableranouttonearbyhomes.Eachpersonusingthecablepaidamonthlycharge(费用).
CATVworkedwell,andsoonnewuseswerefoundforit.Localstationscouldfeedprogramsintoemptychannelsthatwerenotinuse.Peoplealongthecablecouldhavelocalnews,weatherreport,andfarmandschoolnewsatnoextracharge.
Toddy,cabletelevisionhasmovedintocities.Itbringsinextraprogramsthatcityviewerswithordinaryantennacannotsee.Itisalsousedinmanyclassroomsthroughoutthecountry.
根据短文内容,选择正确答案。
1.Fromthefirstparagraphweknowthat_____.
A.mostpeopleusecabletelevision
B.“communityantenna”isusedforcabletelevision
C.acommunityantennaisusedforcabletelevision
D.anordinaryantennacannotpickupTVprograms
2.Ofthefollowing,whichisnotthewayTVsignalstravel?
A.Inacurve.B.Inastraightline.
C.Inalldirections.D.Towardsthehorizon.
3.CableTVisbecomingmoreandmorepopularbecause_____.
A.itisfreeofchargeB.itprovidesallTVusersgoodpictures
C.itonlyneedsabitofcableD.itcanprovidemoreprograms
4.Onthewhole,thispassageisabout______.
A.howtoputuphighantennasB.awayofpickingupbetterTVprograms
C.howtousetheemptyc