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1、2009年英语专业四级考试真题及答案PARTIIICLOZE[15MIN]Decidewhichofthechoicesgivenbelowwouldbestcompletethepassageifinsertedinthecorrespondingblanks.MarkthebestchoiceforeachblankonAnswerSheetTwo.Scientistsaroundtheworldareracingtolearnhowtorapidlydiagnose,treatandstopt
2、hespreadofanew,deadlydisease.SARS--SevereAcuteRespiratorySyndrome---was(31)____forthefirsttimeinFebruary2003inHanoi,(32)_____sincethenhasinfectedmorethan1,600peoplein15countries,killing63.Atthis(33)_____,therearemorequestionsthananswerssurroundingthedi
3、sease.Symptomsstart(34)_____afeverover100.4degreesF,chills,headacheorbody(35)____.Withinaweek,thepatienthasadrycough,whichmight(36)_____toshortnessofbreath.In10%to20%ofcases,patientsrequire(37)_____ventilationtobreathe.About3.5%diefromthedisease.Sympto
4、ms(38)____beginintwotosevendays,butsomereportssuggestit(39)____takeaslongas10days.Scientistsarecloseto(40)____alabtesttodiagnoseSARS.Inthemeantime,itisdiagnosedbyitssymptoms.Thereisnoevidence(41)____antibioticsoranti-viralmedicineshelp,(42)_____doctors
5、canofferonlysupportivecare.PatientswithSARSarekeptinisolationtoreducetheriskof(43)____Scientistsaren'tsureyet,butsomeresearchersthinkit'sa(44)____discoveredcoronavirus,thefamilyofvirusesthatcausesomecommoncolds.Mostcasesappeartohavebeenpassed(45)____dr
6、opletsexpelledwheninfectedpatientscoughorsneeze.Familymembersofinfectedpeopleandmedicalworkerswhocare(46)____themhavebeenmostlikelyto(47)____theillness.ButrecentdevelopmentsinHongKongsuggestthatthe(48)____mightspreadthroughair,orthatthevirusmight(49)__
7、__fortwotothreehoursondoorknobsorother(50)____.Healthexpertssayitisunlikely,though,thatsharinganelevatorbrieflywithaninfectedpersonwouldbeenoughtopassthevirus.(31)A.detectedB.caughtC.disclosedD.revealed(32)A.butB.andC.orD.yet(33)A.timeB.pointC.aspectD.
8、instance(34)A.fromB.overC.uponD.with(35)A.hurtB.soreC.achesD.feelings(36)A.processB.advanceC.progressD.convert(37)A.automaticB.artificialC.mechanicalD.controlled(38)A.regularlyB.ordinarilyC.traditionallyD.generally(39)A.willB.mightC.sho
