专升本英语单选专项训练

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1、Ⅰ.VocabularyandStructure1.Ifit______toomuchtrouble,I'dloveacupoftea.A.isn't　　B.wasn't　　C.weren't　　D.hadn'tbeen2._________itornot,hisdiscoveryhadcreatedastirinscientificcircles.A.Believe　　　B.Believing　C.Tobelieve　　　D.Believed3.Onceenvironmentaldamage___

2、_______,ittakesmanyyearsforthesystemtorecover.　A.hasdone　　B.istodo　　C.does　D.isdone4.Governmentcannotoperateeffectively_____itisfreefromsuchinterference.　A.solongas　　B.sothat　　C.unless　　D.because5.Thefifthgenerationcomputers,withartificialintelligence,

3、_______andperfectednow.　A.developedB.havedeveloped　C.arebeingdevelopedD.willhavebeendeveloped6.Iboughtanewhouse,butI_________myoldoneyet,soatthemomentIhavetwohouses.　A.didn'tsell　　B.sold　　C.haven'tsold　D.wouldsell7.GreatasNewtonwas,manyofhisideas______

4、_____todayandarebeingmodifiedbytheworkofscientistsofourtime.　A.aretochallengeB.maybechallengedC.havebeenchallengedD.arechallenging8.Itseemsoil___________fromthispipeforsometime.We'llhavetotakethemachineaparttoputitright.　A.hadleaked　B.isleaking　　C.leak

5、ed　　　D.hasbeenleaking9.IdecidedtogotothelibraryassoonasI_______.　A.finishwhatIdidB.finishedwhatIdidC.wouldfinishwhatIwasdoingD.finishedwhatIwasdoing10.Untilthen,hisfamily_________fromhimforsixmonths.　A.didn'thear　B.hasn'tbeenhearingC.hasn'theard　　　D.ha

6、dn'theard11.Mary'sscoreonthetestisthehighestinherclass;she____havestudiedveryhard.A.may　　B.should　　C.must　　D.oughtto1012.You_____herinhereofficelastFriday;she'sbeenoutoftownfortwoweeks.　　A.needn'thaveseenB.musthaveseen　　C.mighthaveseen　D.can'thaveseen1

7、3.Theroomisinterriblemess;it_________cleaned.　　A.can'thavebeenB.shouldn'thavebeen　C.mustn'thavebeenD.wouldn'thavebeen14.Shewasthankfulthatshe'dhadherbabyinhospital;otherwise,shethought,thebaby_____.A.died　　B.haddied　　C.mighthavedied　　D.mightdie15.You__

8、____allthosecalculations!Wehaveacomputertodothatsortofthing.A.needn'thavedone　B.shouldn'thavedone　C.mustnothavedone　D.cannothavedone16.Withallthisworkonhand,he_______tothecinemalastnight.A.mustn't　B.oughtn'ttogo　　　C.wouldn'tgo　D.shouldn