下面是一篇杂志文章，请将标有A～G的段落插入文章中标号1～5的合适位置，使这篇文章意义完整，结构连贯；其中有一个段落是多余的。CATVisashortwayofsaying“communityant

　　下面是一篇杂志文章，请将标有A～G的段落插入文章中标号1～5的合适位置，使这篇文章意义完整，结构连贯；其中有一个段落是多余的。

　　CATVisashortwayofsaying“communityantenna(社区天线)television”．But“cabletelevision”isthetermmostpeopleuse．[1]________

　　Televisionsignalsdonotfollowthecurve(曲线)oftheearth．[2]________Ifyouliveonlyafewmilesfromastationyoumaynotgetanypictureatall．

　　[3]________Acommunityantennawasusuallyplacedonahillamountainoronahightower．TheantennapickedupTVsignalsandfedthemintoasmalllocalstation．Fromthestationthickwirescalledcablesranouttonearbyhomes．Eachpersonusingthecablepaidamonthlycharge．

　　CATVworkedwellandsoonnewuseswerefoundforit．Localstationscouldfeedprogramsintoemptychannelsthatwerenotinuse．[4]________

　　Todaycabletelevisionhasmovedintocities．Itbringsinextraprogramsthatcityviewerswithregularantennascannotsee．[5]________

　　A．Theytravelinstraightlinesinalldirections．SignalsfromaTVstationmovetowardthehorizon(地平线)andthengointospace．

　　B．ThewideuseofCATVisduetothewidespreadoftheTVsetinalmosteveryfamily．

　　C．CabletelevisionallowsviewerstoreceiveTVprogramsthattheycannotpickupwiththeirregularantennas．

　　D．Peoplealongthecablecouldhavelocalnewsweatherreportsandfarmandschoolnewsatnoextracharge．

　　E．CATVbeganin1948．PeopleinplacesfarfromTVstationssharedthecostofputtinguphighantennas．

　　F．Itisalsousedinmanyclassroomsthroughoutthecountry．

　　G．ThereforetheycouldwatchTVwithextracharge．