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U4-A-B3ReadingComprehensionDirections:Therearetwopassagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.Foreachofthemtherearefourchoices.Clickonthebestchoice.(20points)PassageOneAscientificpanelconvenedbytheWorldHealthOrganizationrecommendedguidelinesonFridayfordoctorsconductingclinicalstudiesofSARSpatients.Thepanelurgeddoctorstoapplytheguidelinesinanalyzingthemassesofpotentiallyusefulinformationaboutvarioustherapiesthatwerecollectedinthisyear'sepidemic.Muchofthatinformationhasnotbeenpublishedoranalyzed.Itisamatterofurgencytogetbetteranalysisandreview,saidDr.SimonMardel,aWHOofficialwholedthetwo-daymeetingthatendedonFriday.HesaidthousandsofpotentialtherapiesandcompoundshadbeentestedsofarasresearcherstrytodeterminetreatmentsforSARS,orsevereacuterespiratorysyndrome.WerecognizethathavingnotreatmentforSARSishinderingourabilitytocontrolanepidemicinsomanyways.Hesaid.Intheepidemicearlierthisyear,varioustreatments,likedrugstofightthevirusorstrengthentheimmunesystem,aswellastraditionalChinesemedicine,weredeliveredunderemergencyconditions,inwidelydifferentsettingsandcountriestopatientssufferingfromvaryingstagesoftheillness.Thoseconditions—generallywithoutstandardizedmeasurementsorcontrolledsituations—havemadeithardtointerpretresults.Standardsupportivetherapylikenursing,andinseverecasestheuseofmechanicalrespirators（呼吸器）tohelppatientsbreathe,isthemainstay（主要支持）ofSARScare,andhelpedmanypatientssurvive.ButdoctorsstilldonotknowhowbesttotreatSARSpatientswhohavebreathingdifficulties,Dr.Mardelsaid.Onemethodisinvasiveventilation.Asecondmethodinvolvesblowingoxygenintothelungsthroughamask.Bothcarrytheriskoftransmittingthevirustohospitalemployees.Withoutproperanalysis,thepanelwasunabletosaydefinitivelywhichtreatmentworkedbest,orwhichcausedthemostharm.Thereisalackofsharedinformation,Dr.Mardelsaid,notingthatalotofdatahavenotbeenpublished.Thepanelalsoagreedonguidelinesthatwouldallowdoctorstoconductquickandsafeclinicaltrials,aprocessthatgenerallytakesyearstocomplete.TheWorldHealthOrganization,aUnitedNationsagencydidnotreleasetheguidelines.Dr.Mardelsaidtheywereflexiblebecausenooneknewwhere,whenandinwhatsettingSARSwouldreturn.Expertsinmanycountrieshavealreadylistedthetreatmentstheywanttotest,andthehealthagencyisleavingthesedecisionstoindividualnations.21.Guidelinesrecommendedbythescientificpanelcanbeusedfor_____.A.gatheringpotentiallyusefulinformationaboutvarioustherapiescollected该选项共0人选择B.conductingclinicalstudiesofSARSpatients该选项共0人选择C.determiningtreatmentforSARS该选项共0人选择D..publishingalltheinformationaboutSARS该选项共0人选择请根据需要填入Script：该题共0人答题，答对0人，答错0人，正确率为0%，错误率为0%正确答案：B22.Accordingtothepassage,itisdifficulttointerprettheresultsofcertaintreatmentsforSARSbecause_____.A.patientswereindifferentcountries该选项共0人选择B.patientsweregivenmedicinesinwidelydifferentsettings该选项共0人选择C.patientswereatdifferentstagesoftheillness该选项共0人选择D.theseconditionshadnostandardizedmeasurementsorcontrolledsituations该选项共0人选择请根据需要填入Script：该题共0人答题，答对0人，答错0人，正确率为0%，错误率为0%正确答案：D23.Accordingtodoctors,thetwomethodstotreatSARSpatientswhohavebreathingdifficultiesboth_______.A.carrytheriskofinfectinghospitalemployees该选项共0人选择B.areeffectiveincuringpatientswhohavebreathingdifficulties该选项共0人选择C.don'truntheriskoftransmittingthevirustohospitalemployees该选项共0人选择D.provetoworkeffectivelyandcausenoharm该选项共0人选择请根据需要填入Script：该题共0人答题，答对0人，答错0人，正确率为0%，错误率为0%正确答案：A24.AccordingtoaWHOofficial,Dr.Mardel,theguidelineswereflexiblebecause_____.A.SARSwouldreemergeinpoorcountries该选项共0人选择B.nooneknewwhere,whenandinwhatsettingSARSwouldreturn该选项共0人选择C.SARSwouldnotappearindevelopedcountries该选项共0人选择D.nooneknewwhetherSARSwouldreturnornot该选项共0人选择请根据需要填入Script：该题共0人答题，答对0人，答错0人，正确率为0%，错误率为0%正确答案：B25.Whichofthefollowingcanbethebesttitleofthepassage?A.SARS,aDreadfulDisease该选项共0人选择B.NoGoodMethodstoTreatSARS该选项共0人选择C.SARSWillReturnOneDay该选项共0人选择D.HealthPanelRecommendsNewGuidelinesonSARS该选项共0人选择请根据需要填入Script：该题共0人答题，答对0人，答错0人，正确率为0%，错误率为0%正确答案：D请根据需要填入Script：PassageTwoChildrenaregettingsofatthattheymaybethefirstgenerationtodiebeforetheirparents.Today'syoungstersarealreadyfallingpreytopotentialkillerssuchasdiabetes(糖尿病)becauseoftheirweight.Fattyfast-fooddietscombinedwithsedentary(长坐的)lifestylesdominatedbytelevisionsandcomputerscouldmeankidswilldietragicallyyoung,saysProfessorAndrewPrentice,fromtheLondonSchoolofHygieneandTropicalMedicine.Atthesametime,theshapeofthehumanbodyisgoingthroughahugeevolutionaryshiftbecauseadultsaregettingsofat.HereinBritain,latestresearchshowsthattheaveragewaistsizeforamanis36~38inches,andmaybe42~44by2032.Thiscompareswithonly32.6inchesin1972.Women'swaistshavegrownfromanaverageof22inchesin1920to24inthe50sand30now.Oneofthemajorreasonswhychildrennowareatgreaterriskisthatwearegettingfatteryounger.IntheUKalone,morethanonemillionunder16areclassedasoverweightorobese(过度肥胖的)—doublethenumberinthemid80s.Oneintenfour-year-oldsarealsomedicallyclassifiedasobese.Theobesity(肥胖症)pandemic(流行病)—anextensiveepidemic—whichstartedintheUS,hasnowspreadtoEurope,Australia,CentralAmericaandtheMidd