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1、2017年雅思IELTS考试备考资料模拟试题及答案11【新东方】轻松直达90分！2017年雅思金牌课程火热开售中〉〉ElizabethHazenandRachelRrowncopatentedoneofthemostwidelyacclaimedwonderdrugsofthepost-SecondWorldWaryears・HazenandBrown，sworkwasstimulatedbythewartimeneedtofindacureforthefungusinfectionsthatafflictedmanymilitarypersonnel.Scientistshadbeenfe
2、verishlysearchingforanantibiotictoxicenoughtok订Ithefungibutsafeenoughforhumanuse,since,unfortunately,thenew〃wonderdrugsz，suchaspenicillinandstreptomycinkilledtheverybacteriainthebodythatcontrolledthefungi.ItwastodiscoverafungicidewithoutthatdoubleeffectthatBrown,ofNewYorkState'sDepartmentofHealthLa
3、boratoriesatAlbany,andHazen,seniormicrobiologistattheDepartmentofHealthinNewYork,begantheirlong-distancecollaboration.BaseduponHazen'spreviousresearchatColumbiaUniversity,whereshehadbuilts,isolatedandpurifiedar,HazennameditStreptomanimpressivereconvincexistedincernmethodicalsamples,whiaredextractct
4、iveagentseHazencouldal948vacatimpofsoilfroquierCountydthepresencourseJshonoycesNourseiewthattheprsheditfromperfurtherreubstancetoaamecTfungicortheNewYorhepreviousnscovery,Broecollectiondthatanantitainsoils・Tlyscreenedachshethense,andshippedstudytheirbon,HazenformtheedgeofN,Virginia,teofthemicro,and
5、withinaopertiesoftreviouslydesearchtheyefine,yellowiden.〃ThenrkStatelaboramewasalreawnsaidlightoffungusculfungalorganheydividedtndculturedsnttoherpartthembacktoNiologicalprtuitouslycoourse'scowphat,whentesorganisms・Iyearthetwosheirsubstanscribedantiventuallyrepowder,whicenamed/znystatory)whentdyinu
6、se・Oftlythatitsimtures,bothwismalreadyehework・Hazecoresofsoilner,whoprepewYork,wheroperties.OnllectedacluastureinFauted,revealenfarmownerNcientistskncedistinguibiotics.Aftducedtheirshtheyfirstnatin〃(tohonheylearnedtheirmajordiplyillustratecThowunpredictableconsequencesca.ncomefromrathermodestbegiri
7、nings.〃1.Whatisthemaintopicofthepassage?(A)ThelivesofHazenandBrown.(B)Thedevelopmentofasafefungicide.(C)TheNewYorkStateDepartmentofHea1th.(D)Thedevelopmentofpenicillin.2.Whatcanbeinferredfromthepassageabout
