阅读理解（共15小题；每题2分，共30分。）
阅读下列短文，然后根据短文的内容从每小题的四个选择项中选出最佳的一项，并把它前面的大写字母填入左边的括号里。
A
Jimmywasfiveyearsoldandhisbrother，Billy，wasonlyababy.Onemorninghismotherwaitedforanimportanttelephonecallforhours，butnobodycalled.Therewasnobreadinthehouseandshehadtogoouttobuysome.Jimmystayedathometolookafterthebaby.Whenthemotherwasout，thetelephonerangandJimmyanswered.
Mr.Baker：HelloMayIspeaktoMrs.White？
Jimmy：Sorry，Motherisout.
Mr.Baker：Well，whenshecomesback，saytoher，“Mr.Bakercalled.”
Jimmy：What？
Mr.Baker：Mr.Baker.Writeitdown.B-A-K-E-R.
Jimmy：HowdoyouwriteB？
Mr.Baker：HowdoIwrite…？Listen，littleboy，isthereanybodyelsewithyou？Anybrothersorsisters？
Jimmy：Yes，mybrotherBillyishere.
Mr.Baker：Good.Iwanttotalktohim，please.
Jimmy：Allright.Jimmytookthetelephonetothebaby‘sbedandputitbesideitshead.Notlongafterthathismothercameback.
Mother：Didanybodycall？
Jimmy：Yes，amancalled.ButheonlywantedtotalktoBilly.
（）51.Jimmy‘smotherwaitedfor________.
A.animportantman
B.agoodfriend
C.atelephonecall
D.apieceofgoodnews
（）52.Jimmy‘smotherwentoutbecause________.
A.shewaitedforhours
B.nobodycalled
C.shehadtobuysomebread
D.shehadtobuysomemilk
（）53.Jimmycouldn‘twritedownMr.Baker’snamebecause________.
A.hehadnopenorpaper
B.hecouldn‘treadorwrite
C.hehadtolookafterthebaby
D.hehadtoplaywithhisbrother
（）54.Mr.Bakerwantedtotalkto________.
A.achildolderthanJimmy
B.achildyoungerthanJimmy
C.Jimmy‘sbrotherBilly
D.Jimmy‘ssisterBetty
B
Thecowboyistheheroofmanymovies.Heis，eventoday，asymbolofcourageandadventure.Butwhatwasthelifeofthecowboyreallylike？
Thecowboy‘sjobisclearfromtheword“cowboy”。Cowboysweremenwhotookcareofcowsandothercattle.ThecattlewereintheWestandinTexas.PeopleinthecitiesoftheEastwantedbeeffromthesecattle.Trainscouldtakethecattleeast.Butfirstthecattlehadtogettothetrains.Partofthecowboy’sjobwastotakethecattlehundredsofmilestotherailroadtowns.
Thetripswerecalledcattledrives.Acattledriveusuallytookseveralmonths.Cowboysrodeforsixteenhoursaday.Becausetheyrodesomuch，eachcowboybroughtalongabouteighthorses.Acowboychangedhorsesseveraltimeseachday.
Thecowboyshadtomakesurethatthecattlearrivedsafely.Beforestartingonadrive，thecowboysbrandedthecattle.Theyburnedamakeonthecattletoshowwhotheybelongedto.Butthesemarksdidn‘tstoprustlers，orcattlethieves.Cowboyshadtoprotectthecattlefromrustlers.Rustlersmadethedangeroustripevenmoredangerous.
Eventhoughtheirworkwasverydifficultanddangerous，cowboysdidnotearnmuchmoney.Theywerepaidbally.Yetcowboyslikedtheirwayoflife.Theylivedinawildandopencountry.Theylivedalifeofadventureandfreedom.
（）55.Thecowboy‘sjobwas________.
A.tobeahero
B.totakecareofcattle
C.tobearustler
D.tobeadriver
（）56.Cowboys________.liuxuepaper.com