2009年新人教版高二英语下学期unit20练习题

海量资源尽在星星文库：’stimetobuywarmclothes.A.With;comeB.Have;comingC.With;comingD.Having;come9.Ifyoufindthatchairtoohard,I’llbringa_____foryou.A.cushionB.pillowC.bedclothesD.comfort10.Hewouldalways_____anyoneindifficulty.A.lendahandtoB.playhishandtoC.shakehandswithD.raisehishandagainst11.Mr.Smith_____metobuyseveral_____eggsfortheparty.A.asked;dozenB.suggested;dozensofC.had;dozenD.persuaded;dozens12.Thesunlightcamein_____thewindowsintheroofandlitupthewholeroom.A.throughB.acrossC.onD.over13.Thedoctor’stalk_____thehistoryofmedicine_____aperiodoffivethousandyears.A.covered;coveringB.covered;coveredC.covering;coveredD.covered;tocover14.--Whatwasthepartylike?--Wonderful.It’syears_____Ienjoyedmyselfsomuch.A.afterB.beforeC.whenD.since15.Ihadnoidea_____youhadbeeninhospital.Couldyou_____whathadhappened.A.what;givevoicetoB.how;giverisetoC.where;giveplacetoD.that;givemeageneralideaof二.完形填空You'vebeenawayfromusforoneyear;youtoldusaliewhichIcametoknownotlongago.Onthisspecialdayforteachersacrossthecountry,Ican16keepmyselffromtellingyourwhitelietothosewhowouldlendmeanear.Doyoustillrememberthehappy17aboutsix海量资源尽在星星文库：(学费).Youoftenemphasizedtousthe26ofone'slife,sothatmusthavebeenwhatyouwere27inthosefiveyears!Onecoldmorningwhenclassbegan,youenteredtheroom28youhadbeencrying29.Inyourclass,we30butlookedawayfromyoureyes.You31forsometimeasifyouwere32tofindthisrightword…yousaidyouwouldgoawayandwouldneverbebacktoteachbecauseyourboyfriendwantedyoumore…Onthefollowingmorning,we33youtheverybestandthevillagersgaveyoutheir34Thetraintookyouawayandyourbroken35TheotherdayIhappenedtohearmyparentschattingthatyouhadlungcancerandlefttheworldsoonafteryouwavedgoodbye.16.A.foreverB.seldomC.hardlyD.soon17.A.sceneB.conditionC.signD.sight18.A.reportB.arrivalC.explanationD.speech19.A.promisedB.answeredC.permittedD.agreed20.A.sharedB.spentC.paidD.devoted21.A.evenB.everC.soonD.still22.A.consideredB.fearedC.supposedD.doubted23.A.woreB.pretendedC.gainedD.presented24.A.puleB.troubleC.questionD.fear25.A.teachingB.middleC.courseD.field26.A.wayB.wealthC.valueD.cost27.A.afterB.forC.withD.against28.A.asifB.becauseC.eventhoughD.before29.A.happilyB.bitterlyC.anxiouslyD.angrily30.A.listenedB.talkedC.discussedD.studied31.A.explainedB.stoppedC.talkedD.spoke32.A.thinkingB.worryingC.cryingD.trying33.A.hopedBexpectedC.wishedD.brought34.A.thanksB.satisfactionsC.expressionsD.rewards35.A.boyB.classC.heartD.memory三.阅读理解Throughouthistorysoldiershavefoughtbloodybattlesinordertocontrolthehighground.Thereisnodoubtthatthisisatactical(战术的)necessity.Standingaboveyourenemyisanadvantagethatoftenleadstovictory.Nowadays,highgrounddoesnotjustmeanhill-tops.Italsomeansspace,whichhasbecomeanincreasinglyimportantpartofmilitarystrategy(军事战略).Withitsmoreadvancedsatellitetechnologies,Americaisthemajorpowerinspace.AndnowtheUSAirForcehasputintoserviceanewweapondesignedtojamenemysatellite海量资源尽在星星文库：(反卫星通信系统)wasdeclaredoperationalonNovember1.Theground-basedsystemuseselectromagneticradiofrequencies(无线电磁波)tostopenemysatellitesworkingonashort-termbasis.“Ashort-termeffectensuresthatduringthetimeofneed,theenemy’sspace-basedcapability(能力)isreduced,”saidaUSmilitaryofficial.“Followingthetimeofneed,theircapabilitiescanreturntoitsoriginalstate.”Thesystemismadeupofanantenna(天线),transmitters(发射机)andreceiversandcanbeeasilytransportedaroundinavehicle.TocontrolspacewasoneoffouraimsofanationalspacepolicystartedbyformerpresidentBillClintonin1996.ThegoalistomakesureUSforcescanrelyonspace-basedservicesandtodenyanenemyanysimilarbenefits.TheUSmilitaryhasexperimentedwithseveral“anti-satellite”weapons,includinglasers,todestroyordamageenemyunits.TheresaHitchens,vicepresidentoftheCentreforDefenceInformationinWashington,welcomedthenewsystemaslonga