博士入学考试英语模拟题

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1、EnglishEntranceExaminationForNon-EnglishMajorDoctoralCandidatesPaperOnePartIIReadingComprehension(30points，45minutes)Directions:Inthispartthereareseveralpassages.Eachpassageisfollowedbysomequestionsorunfinishedstatements.Foreachofthemtherearefourchoicesmarked(A)，B)，C)andD).Youshoulddeci

2、deonthebestchoiceandmarkthecorrespondingletterontheAnswerSheet.Passage1Everyyearscientistsopenmoredoorsthatleadtothesecretsofnewbeneficentdrugs.Thereisbacitracin，whichwasdiscoveredbytwoscientistsatColumbiaUniversity’sCollegeofPhysiciansandSurgeons.Thesetwopeople,Dr.FrankMeleneyandMissBa

3、lbinaJohnson,knowingthatthehumanbodyhadsomekindofactioninitselfwithwhichitfightsinfections，begantosearchforthechemicalthatdoesthis.Inthehospitaltheyexaminedbadlyinfectedwoundsofpeoplewhohadbeenhurtinaccidentsandmadetestsofthebloodandtheinfectedtissue.Finally,inthewoundofagirlwhohadbroke

4、nalegbone，theyfoundtheusefulgermswhichseemedtobefightingthepoisonousinfection.Theytooksomeoftheseintothelaboratoryandfromthemdevelopedcultures;thatis,largermassesofthegermswithwhichtoexperiment.Atlast,afterlongandpainstakingwork,theywereabletodrawfromthesegermsasubstancewhichisagermdest

5、royer.Dr.MeleneyandMissJohnsonnameditbacitracin-bacibecausethegermis，inscientificlanguage，abacillusandtracinforMargaretTracy，whosebrokenlegsuppliedthegerm.Bacitracinatfirstwasusedonlylocally;laterthedrugwasdevelopedintoasolutionthatcanbeusedtofightgermthroughthebloodstream.16/Today，thed

6、iscoveryofanewdrugoccurs.A)veryseldom.B)onceinageneration.C)onceeverytenyears.D)frequently.17.Thescientifictermfortheactionwithwhichthehumanbodyfightsinfection.A)drug.B)biotic.C)notmentioned.D)bothAandB.18.Searchingforthefightingchemical，thescientistsexaminedA)freshwounds.B)infectedwoun

7、ds.C)onlyinfectedlegbones.D)onlyafewwounds.19.Cultures，asusedinthisarticle，are.A)masscsofgerms.B)bloodtests.C)massesofinfectedtissue.D)poisonousgerms.20.Bacitracin.A)ispoisonous-B)destroysgerms.C)restoresbrokenbones.D)developsgerms.21.Tosaythatadrugwasusedlocallyistosaythatitwa