【专升本】英语练习题

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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__________,ittakesmanyy

2、earsforthesystemtorecover.　A.hasdone　　B.istodo　　C.does　D.isdone4.Governmentcannotoperateeffectively_____itisfreefromsuchinterference.　A.solongas　　B.sothat　　C.unless　　D.because5.Thefifthgenerationcomputers,withartificialintelligence,_______andperfectednow.　A.developed　　　　B

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

4、ime.　A.aretochallenge　B.maybechallengedC.havebeenchallengedD.arechallenging8.Itseemsoil___________fromthispipeforsometime.We'llhavetotakethemachineaparttoputitright.　A.hadleaked　B.isleaking　　C.leaked　　　D.hasbeenleaking9.IdecidedtogotothelibraryassoonasI_______.　A.finishwh

5、atIdidB.finishedwhatIdidC.wouldfinishwhatIwasdoingD.finishedwhatIwasdoing10.Untilthen,hisfamily_________fromhimforsixmonths.　A.didn'thear　B.hasn'tbeenhearingC.hasn'theard　　D.hadn'theard11.Mary'sscoreonthetestisthehighestinherclass;she____havestudiedveryhard.　　A.may　　B.sho

6、uld　　C.must　　D.oughtto12.You_____herinhereofficelastFriday;she'sbeenoutoftownfortwoweeks.　　A.needn'thaveseenB.musthaveseen　　C.mighthaveseen　　D.can'thaveseen13.Theroomisinterriblemess;it_________cleaned.　　A.can'thavebeenB.shouldn'thavebeen　　C.mustn'thavebeenD.wouldn'thaveb

7、een14.Shewasthankfulthatshe'dhadherbabyinhospital;otherwise,shethought,thebaby_____.　　A.died　　B.haddied　　C.mighthavedied　　D.mightdie15.You______allthosecalculations!Wehaveacomputertodothatsortofthing.　　　A.needn'thavedone　B.shouldn'thavedone　C.mustnothavedone　　D.cannothave

8、done16.Withallthisworkonhand,he_______tothecinemalastnight.　　　A.mustn't　B.oughtn'ttogo　　C.wouldn