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OneGoodReasontoLetSmallpoxLive It’’snowafairbetthatwewillneverseethetotalextinctionofthesmallpoxvirus.Theideawastocapthegloriousachievementof1980whensmallpoxwaseradicatedinthewildbydestroyingthekillervirusinthelasttwolabsthataresupposedtohaveit—oneintheUSandoneinRussia.Ifsmallpoxhadtrulygonefromtheplanetwhatpointwasthereinkeepingthesereserves? 【51】realityofcourseitwasnaiveto【52】thateveryonewouldlet【53】ofsuchapotentpotentialweapon.Undoubtedlyseveralnationsstillhave【54】vials.【55】thelastofficialstocksoflivevirusbredmistrustoftheUSandRussia【56】noobviousgain. NowAmericanresearchershave【57】ananimalmodelofthehumandiseaseopeningthe【58】fortestsonnewtreatmentsandvaccines.Soonceagainthere’’sagoodreasonto【59】thevirus—justin【60】thediseaseputsinareappearance. Howdowe【61】withthemistrustoftheUSandRussia?【62】.Keepthevirus【63】internationalauspicesinawell-guardedUNlaboratorythat’’sopentoallcountries.TheUSwillobjectofcoursejustasitrejectsamultilateralapproachtojustabouteverything.Butitdoesn’’t【64】theideaiswrong.Ifthevirus【65】usefulthenlet’’smakeittheservantofallhumanity——notjustapartofit. smallpoxn.天花 vialn.小瓶 auspicesn.赞助支持 capvt.结束覆盖 potentadj.有效力的强有力的 mistrustn.不信任怀疑
Ifthepopulationkeepsongrowingtherewilleventuallynotbeenoughresourceslefttosupportlifeontheearth.
MaleandFemalepilotscauseaccidentsdifferently MalepilotsflyinggeneralaviationprivateaircraftintheUnitedStatesaremorelikelytocrashduetoinattentionorflaweddecisionmakingwhilefemalepilotsaremorelikelytocrashfrommishandlingtheaircraft.ThesearetheresultsofastudybyresearchersattheJohnsHopkinsUniversityBloombergSchoolofPublicHealth. Thestudyidentifiesthedifferencesbetweenmaleandfemalepilotsintermsofcircumstancesofthecrashandthetypeofpilotserrorinvolved.Crashesofgeneralaviationaircraftaccountfor85percentofallaviationdeathsintheUnitedStates.ThecrashrateformalepilotsasformotorvehicledriversexceedsthatofcrashesoffemalepilotsexplainsSusanP.BakerMPHprofessorofhealthpolicyandmanagementattheBloombergSchoolofPublicHealth.Becausepilotyouthandinexperienceareestablishedcontributorstoaviationcrasheswefocusedononlymaturepilotstodeterminethegenderdifferencesinthereasonsforthecrash. Theresearchersextracteddataforthisstudyfromalargeresearchprojectonpilotagingandflightsafety.Thedataweregatheredfromgeneralaviationcrashesofairplanesandhelicoptersbetween1983and1997involving144femalepilotsand267malepilotsaged40-63.Femalepilotswerematchedwithmalepilotsina1:2ratiobyageclassesofmedicalandpilotcertificatesstateorareaofcrashandyearofcrash.Thenthecircumstancesofthecrashesandthepiloterrorinvolvedwerecategorizedandcodedwithoutknowledgeofpilotgender. Theresearchersfoundthatlossofcontrolonlandingortakeoffwasthemostcommoncircumstanceforbothsexesleadingto59percentoffemalepilots’crashesand36percentofmales’’.Experiencingmechanicalfailurerunningoutoffuelandlandingtheplanewiththelandinggearupwereamongthefactorsmorelikelywithmaleswhilestallingwasmorelikelywithfemales. Themajorityofthecrashes—95percentforfemalesand88percentformales—involvedatleastonetypeofpiloterror.Mishandlingaircraftkineticswasthemostcommonerrorforbothsexesbutwasmorecommonamongfemalesaccountingfor81percentofthecrashesthanmalesaccountingfor48percent.Maleshoweverappearedmorelikelytobeguiltyofpoordecision-makingrisk-takingandinattentivenessexamplesofwhichincludemisjudgingweatherandvisibilityorflyinganaircraftwithaknowndefect.Femalesthoughmorelikelytomishandleorlosecontroloftheaircraftweregenerallymorecarefulthantheirmalecounterparts. inattention/n.疏忽 aviation/n.航空 flawed/adj.有缺陷的 mishandle/v.瞎弄乱处理 MPHMasterofPublicHealth公共卫生硕士 gender/n.性性别 runout耗尽用完 stallv.飞机失速发动机熄火 kinetics/n.动力学 WhichofthestatementsisNOTtrueaccordingtothesecondparagraph?
DefectiveGenesandHumanHealth Eachofuscarriesabouthalfadozendefective有缺点的genes.Weremainblissfully快乐地unawareofthisfactunlessweoroneofourcloserelativesareamongstthemanymillionswhosufferfromageneticdisease.Aboutoneintenpeoplehasorwilldevelopatsomelaterstageaninherited遗传的geneticdisorderandapproximately2800specificconditionsareknowntobecausedbydefectsmutationsinjustoneofthepatient’’sgenes.Somesinglegenedisordersarequitecommon-—cystic胞状的fibrosis纤维化isfoundinoneoutofevery2500babiesbornintheWesternWorld—andintotaldiseasesthatcanbetracedtosinglegenedefectsaccountforabout5%ofalladmissionstochildren’’shospitals. Mostofusdonotsufferanyharmfuleffectsfromourdefectivegenesbecausewecarrytwocopiesofnearlyallgenesonederivedfromourmotherandtheotherfromourfather.Theonlyexceptionstothisrulearethegenesfoundonthemalesexchromosomes染色体MaleshaveoneXandoneYchromosometheformerfromthemotherandthelatterfromthefathersoeachcellhasonlyonecopyofthegenesonthesechromosomes.Inthemajorityofcasesonenormalgeneissufficienttoavoidallthesymptomsofdisease.Ifthepotentiallyharmfulgeneisrecessive后退的thenitsnormalcounterpart配对的willcarryoutallthetasksassignedtoboth.Onlyifweinheritfromourparentstwocopiesofthesamerecessivegenewilladiseasedevelop. Ontheotherhandifthegeneisdominant显性的italonecanproducethediseaseevenifitscounterpartisnormal.Clearlyonlythechildrenofaparentwiththediseasecanbeaffectedandthenaverageonlyhalfthechildrenwillbeaffected.Huntington’’schorea舞蹈病aseverediseaseofthenervoussystemwhichbecomesapparentonlyinadulthoodisanexampleofadominantgeneticdisease. FinallytherearetheXchromosome-linkedgeneticdiseases.Asmaleshaveonlyonecopyofthegenesfromthischromosometherearenoothersavailabletofulfillthedefectivegene’’sfunction.ExamplesofsuchdiseasesareDuchennemusculardystrophy营养不良andperhapsmostwellknownofallhemophilia血友病. QueenVictoriawasacarrierofthedefectivegeneresponsibleforhemophiliaandthroughheritwastransmittedtotheroyalfamiliesofRussiaSpainandPrussia.MinorcutsandbruiseswhichwoulddolittleharmtomostpeoplecanprovefataltohemophiliacswholacktheproteinsFactorsVIIIandIV凝血因子VIII和IVinvolvedintheclotting血凝结ofbloodwhicharecodedforbythedefectivegenes.Sadlybeforetheseproteinsweremadeavailablethroughgeneticengineeringhemophiliacsweretreatedwithproteinsisolatedfromhumanblood.Someofthisbloodwascontaminated污损withtheAIDSvirusandhasresultedintragic悲惨的consequencesformanyhemophiliacs.Useofgeneticallyengineeredproteinsintherapeuticapplicationsratherthanbloodproductswillavoidtheseproblemsinthefuture. Notalldefectivegenesnecessarilyproducedetrimental有害的effectssincetheenvironmentinwhichthegeneoperatesisalsoofimportance.Aclassicexampleofageneticdiseasehavingabeneficialeffectonsurvivalisillustratedbytherelationshipbetweensickle-cell镶形血球anemia贫血症andmalaria疟病.Onlyindividualshavingtwocopiesofthesickle-cellgeneandonenormalgeneareunaffectedandmoreimportantlyareabletoresistinfection传染bymalarialparasites寄生虫.Theclearadvantageinthiscaseofhavingonedefectivegeneexplainswhythisgeneiscommoninpopulationsinthoseareasoftheworldwheremalariaisendemic特有的. WhichofthefollowingstatementisTRUE?
Interferon Forseveralyearsscientistshavebeentestingasubstancecalledinterferon干扰素apotentialwonderdrugthatisprovingtobeeffectiveintreatingavarietyofailmentsincludingvirusinfectionsbacteriainfectionsandtumors.Todatethenewdrughasprovokednonegativereactionofsufficientsignificancetodiscourageitsuse.Butinspiteofitssuccesslastyearonlyonegramwasproducedintheentireworld. Thereasonforthescarcityliesinthestructureofinterferon.Aspeciesspecificproteintheinterferonproducedfromoneanimalspeciescannotbeusedintreatinganotheranimalspecies.Inotherwordstotreathumanbeingsonlyinterferonproducedbyhumanbeingsmaybeused.Thedrugisproducedbyinfectingwhitebloodcellswithavirus.Fortunatelyitissopotentthattheamountgiveneachpatientperinjectionisverysmall. Unlikeantibiotics抗菌素interferondoesnotattackgermsdirectly.Insteaditmakesunaffectedcellsresistanttoinfectionandpreventsthemultiplicationofviruseswithincells. Asyoumightconcludeoneofthemostdramaticusesofinterferonhasbeeninthetreatmentofcancer.Dr.HansStranderresearchphysicianatSweden’’sfamousKarolinskaInstitutehastreatedmorethanonehundredcancerpatientswiththenewdrug.Amongagroupofselectedpatientswhohadundergonesurgicalproceduresforadvancedcancerhalfweregivenconventionaltreatmentsandtheotherhalfweregiveninterferon.Thesurvivalrateoverathree-yearperiodwas70percentamongthosewhoweretreatedwithinterferonascomparedwithonly10to30percentamongthosewhohadreceivedtheconventionaltreatments. IntheUnitedStatesalarge-scaleprojectsupportedbytheAmericanCancerSocietyisnowunderway.Iftheexperimentissuccessfulinterferoncouldbecomeoneofthegreatestmedicaldiscoveriesofourtime. Interferonhasserioussideeffectswhereasantibioticsdonot.
OneGoodReasontoLetSmallpoxLive It’’snowafairbetthatwewillneverseethetotalextinctionofthesmallpoxvirus.Theideawastocapthegloriousachievementof1980whensmallpoxwaseradicatedinthewildbydestroyingthekillervirusinthelasttwolabsthataresupposedtohaveit—oneintheUSandoneinRussia.Ifsmallpoxhadtrulygonefromtheplanetwhatpointwasthereinkeepingthesereserves? 【51】realityofcourseitwasnaiveto【52】thateveryonewouldlet【53】ofsuchapotentpotentialweapon.Undoubtedlyseveralnationsstillhave【54】vials.【55】thelastofficialstocksoflivevirusbredmistrustoftheUSandRussia【56】noobviousgain. NowAmericanresearchershave【57】ananimalmodelofthehumandiseaseopeningthe【58】fortestsonnewtreatmentsandvaccines.Soonceagainthere’’sagoodreasonto【59】thevirus—justin【60】thediseaseputsinareappearance. Howdowe【61】withthemistrustoftheUSandRussia?【62】.Keepthevirus【63】internationalauspicesinawell-guardedUNlaboratorythat’’sopentoallcountries.TheUSwillobjectofcoursejustasitrejectsamultilateralapproachtojustabouteverything.Butitdoesn’’t【64】theideaiswrong.Ifthevirus【65】usefulthenlet’’smakeittheservantofallhumanity——notjustapartofit. smallpoxn.天花 vialn.小瓶 auspicesn.赞助支持 capvt.结束覆盖 potentadj.有效力的强有力的 mistrustn.不信任怀疑
OneGoodReasontoLetSmallpoxLive It’’snowafairbetthatwewillneverseethetotalextinctionofthesmallpoxvirus.Theideawastocapthegloriousachievementof1980whensmallpoxwaseradicatedinthewildbydestroyingthekillervirusinthelasttwolabsthataresupposedtohaveit—oneintheUSandoneinRussia.Ifsmallpoxhadtrulygonefromtheplanetwhatpointwasthereinkeepingthesereserves? 【51】realityofcourseitwasnaiveto【52】thateveryonewouldlet【53】ofsuchapotentpotentialweapon.Undoubtedlyseveralnationsstillhave【54】vials.【55】thelastofficialstocksoflivevirusbredmistrustoftheUSandRussia【56】noobviousgain. NowAmericanresearchershave【57】ananimalmodelofthehumandiseaseopeningthe【58】fortestsonnewtreatmentsandvaccines.Soonceagainthere’’sagoodreasonto【59】thevirus—justin【60】thediseaseputsinareappearance. Howdowe【61】withthemistrustoftheUSandRussia?【62】.Keepthevirus【63】internationalauspicesinawell-guardedUNlaboratorythat’’sopentoallcountries.TheUSwillobjectofcoursejustasitrejectsamultilateralapproachtojustabouteverything.Butitdoesn’’t【64】theideaiswrong.Ifthevirus【65】usefulthenlet’’smakeittheservantofallhumanity——notjustapartofit. smallpoxn.天花 vialn.小瓶 auspicesn.赞助支持 capvt.结束覆盖 potentadj.有效力的强有力的 mistrustn.不信任怀疑
OneGoodReasontoLetSmallpoxLive It’’snowafairbetthatwewillneverseethetotalextinctionofthesmallpoxvirus.Theideawastocapthegloriousachievementof1980whensmallpoxwaseradicatedinthewildbydestroyingthekillervirusinthelasttwolabsthataresupposedtohaveit—oneintheUSandoneinRussia.Ifsmallpoxhadtrulygonefromtheplanetwhatpointwasthereinkeepingthesereserves? 【51】realityofcourseitwasnaiveto【52】thateveryonewouldlet【53】ofsuchapotentpotentialweapon.Undoubtedlyseveralnationsstillhave【54】vials.【55】thelastofficialstocksoflivevirusbredmistrustoftheUSandRussia【56】noobviousgain. NowAmericanresearchershave【57】ananimalmodelofthehumandiseaseopeningthe【58】fortestsonnewtreatmentsandvaccines.Soonceagainthere’’sagoodreasonto【59】thevirus—justin【60】thediseaseputsinareappearance. Howdowe【61】withthemistrustoftheUSandRussia?【62】.Keepthevirus【63】internationalauspicesinawell-guardedUNlaboratorythat’’sopentoallcountries.TheUSwillobjectofcoursejustasitrejectsamultilateralapproachtojustabouteverything.Butitdoesn’’t【64】theideaiswrong.Ifthevirus【65】usefulthenlet’’smakeittheservantofallhumanity——notjustapartofit. smallpoxn.天花 vialn.小瓶 auspicesn.赞助支持 capvt.结束覆盖 potentadj.有效力的强有力的 mistrustn.不信任怀疑
MaleandFemalepilotscauseaccidentsdifferently MalepilotsflyinggeneralaviationprivateaircraftintheUnitedStatesaremorelikelytocrashduetoinattentionorflaweddecisionmakingwhilefemalepilotsaremorelikelytocrashfrommishandlingtheaircraft.ThesearetheresultsofastudybyresearchersattheJohnsHopkinsUniversityBloombergSchoolofPublicHealth. Thestudyidentifiesthedifferencesbetweenmaleandfemalepilotsintermsofcircumstancesofthecrashandthetypeofpilotserrorinvolved.Crashesofgeneralaviationaircraftaccountfor85percentofallaviationdeathsintheUnitedStates.ThecrashrateformalepilotsasformotorvehicledriversexceedsthatofcrashesoffemalepilotsexplainsSusanP.BakerMPHprofessorofhealthpolicyandmanagementattheBloombergSchoolofPublicHealth.Becausepilotyouthandinexperienceareestablishedcontributorstoaviationcrasheswefocusedononlymaturepilotstodeterminethegenderdifferencesinthereasonsforthecrash. Theresearchersextracteddataforthisstudyfromalargeresearchprojectonpilotagingandflightsafety.Thedataweregatheredfromgeneralaviationcrashesofairplanesandhelicoptersbetween1983and1997involving144femalepilotsand267malepilotsaged40-63.Femalepilotswerematchedwithmalepilotsina1:2ratiobyageclassesofmedicalandpilotcertificatesstateorareaofcrashandyearofcrash.Thenthecircumstancesofthecrashesandthepiloterrorinvolvedwerecategorizedandcodedwithoutknowledgeofpilotgender. Theresearchersfoundthatlossofcontrolonlandingortakeoffwasthemostcommoncircumstanceforbothsexesleadingto59percentoffemalepilots’crashesand36percentofmales’’.Experiencingmechanicalfailurerunningoutoffuelandlandingtheplanewiththelandinggearupwereamongthefactorsmorelikelywithmaleswhilestallingwasmorelikelywithfemales. Themajorityofthecrashes—95percentforfemalesand88percentformales—involvedatleastonetypeofpiloterror.Mishandlingaircraftkineticswasthemostcommonerrorforbothsexesbutwasmorecommonamongfemalesaccountingfor81percentofthecrashesthanmalesaccountingfor48percent.Maleshoweverappearedmorelikelytobeguiltyofpoordecision-makingrisk-takingandinattentivenessexamplesofwhichincludemisjudgingweatherandvisibilityorflyinganaircraftwithaknowndefect.Femalesthoughmorelikelytomishandleorlosecontroloftheaircraftweregenerallymorecarefulthantheirmalecounterparts. inattention/n.疏忽 aviation/n.航空 flawed/adj.有缺陷的 mishandle/v.瞎弄乱处理 MPHMasterofPublicHealth公共卫生硕士 gender/n.性性别 runout耗尽用完 stallv.飞机失速发动机熄火 kinetics/n.动力学 Whatisthemostcommoncircumstanceofcrashwithfemalepilots?
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RegenerationofLimbs Mostpeoplewouldagreethatitwouldbewonderfulifhumanscouldregeneratelimbs.Thosewhohavelosttheirarmsorlegswouldbecompleteagain.Thedayisstillfaroffwhenthismighthappen.Butinthelast10yearsdoctorshavereportedregenerationinsmallerpartsofthebodymostoftenfingers. Regenerationisnotanewly-discoveredprocess.Forcenturiesscientistshaveseenitworkinsomekindsofanimals.Breakoffalizards蜥蜴的tailforexampleanditwillgrowanewtail.Scientistsnowarelookingforawaytoturnonthisexcitingabilityinmorehighly-developedanimalsincludinghumans.Theirexperimentsshowthatnervescellchemistryandthenaturalelectriccurrentsinthebodyallseemtohaveapartinthisprocess. Thebodyofeveryanimalcontainsgeneralpurposecellsthatchangeintowhateverkindofcellsthebodyneeds.Animalssuchasthelizardorsalamander蝾螈usethesecellstoregenerateanewtailorlegwhentheoldoneisbrokenoff.Thesecellscollectaroundthewound.Theyformamasscalledablastema胚基.Thecellsoftheblastemabegintochange.Somebecomebonecellssomemusclecellssomeskincells.Slowlyanewpartre-growsfromthebodyoutward.Whencompletedthenewpartisjustliketheoldone. Morethan200yearsagoItalianscientistLuigiSpallanzanishowedthatyoungeranimalshaveagreaterabilitytoregeneratelostpartsthanolderanimals.Sodoanimalslowerontheladderofevolutionarydevelopment.Themajordifferenceseemstobethatless-developedanimalshavemorenervesintheirtailsandlegsthanhumansdointheirarmsandlegs. Anotherhelpfulpieceofinformationwasdiscoveredinthelate1800s.Scientistsfoundthatwhenacreatureisinjuredanelectricalcurrentflowsaroundthewound.Thestrengthofthecurrentdependsonhowseverethewoundisandonhowmuchnervetissueispresent. In1945AmericanscientistMerylRosetestedanotherideaaboutregeneration.Hethoughtanewlimbmightgrowonlyfromanopenwound.DoctorRosecutoffthefrontlegsofsomefrogsbelowtheknee.Hekeptthewoundswetwithastrongsaltyliquid.Thispreventedskinfromgrowingoverthewounds.Theresultsweresurprising.Frogsdonotregeneratenewlegsnaturally.Butthesefrogsbegantogrownewlimbs.Abouthalfofeachcut-offleggrewbackagain.Newbonesandmusclesdeveloped. Thisresearchhasleddoctorstonewwaysoftreatingcut-offfingers.Doctorshaveobservedforexamplethatmanychildrenandsomeadultswillre-growthetopofafingerifthewoundisleftopen. Regenerationofapartofthebodyisimpossiblewithout______.
RegenerationofLimbs Mostpeoplewouldagreethatitwouldbewonderfulifhumanscouldregeneratelimbs.Thosewhohavelosttheirarmsorlegswouldbecompleteagain.Thedayisstillfaroffwhenthismighthappen.Butinthelast10yearsdoctorshavereportedregenerationinsmallerpartsofthebodymostoftenfingers. Regenerationisnotanewly-discoveredprocess.Forcenturiesscientistshaveseenitworkinsomekindsofanimals.Breakoffalizards蜥蜴的tailforexampleanditwillgrowanewtail.Scientistsnowarelookingforawaytoturnonthisexcitingabilityinmorehighly-developedanimalsincludinghumans.Theirexperimentsshowthatnervescellchemistryandthenaturalelectriccurrentsinthebodyallseemtohaveapartinthisprocess. Thebodyofeveryanimalcontainsgeneralpurposecellsthatchangeintowhateverkindofcellsthebodyneeds.Animalssuchasthelizardorsalamander蝾螈usethesecellstoregenerateanewtailorlegwhentheoldoneisbrokenoff.Thesecellscollectaroundthewound.Theyformamasscalledablastema胚基.Thecellsoftheblastemabegintochange.Somebecomebonecellssomemusclecellssomeskincells.Slowlyanewpartre-growsfromthebodyoutward.Whencompletedthenewpartisjustliketheoldone. Morethan200yearsagoItalianscientistLuigiSpallanzanishowedthatyoungeranimalshaveagreaterabilitytoregeneratelostpartsthanolderanimals.Sodoanimalslowerontheladderofevolutionarydevelopment.Themajordifferenceseemstobethatless-developedanimalshavemorenervesintheirtailsandlegsthanhumansdointheirarmsandlegs. Anotherhelpfulpieceofinformationwasdiscoveredinthelate1800s.Scientistsfoundthatwhenacreatureisinjuredanelectricalcurrentflowsaroundthewound.Thestrengthofthecurrentdependsonhowseverethewoundisandonhowmuchnervetissueispresent. In1945AmericanscientistMerylRosetestedanotherideaaboutregeneration.Hethoughtanewlimbmightgrowonlyfromanopenwound.DoctorRosecutoffthefrontlegsofsomefrogsbelowtheknee.Hekeptthewoundswetwithastrongsaltyliquid.Thispreventedskinfromgrowingoverthewounds.Theresultsweresurprising.Frogsdonotregeneratenewlegsnaturally.Butthesefrogsbegantogrownewlimbs.Abouthalfofeachcut-offleggrewbackagain.Newbonesandmusclesdeveloped. Thisresearchhasleddoctorstonewwaysoftreatingcut-offfingers.Doctorshaveobservedforexamplethatmanychildrenandsomeadultswillre-growthetopofafingerifthewoundisleftopen. InDr.Rose’stestfrogswithcut-offlegs______.
Johnhasalwaysremainedloyaltohisfamilyandfriends.
Thefarmersworriedaboutthelackofrain.
OneGoodReasontoLetSmallpoxLive It’’snowafairbetthatwewillneverseethetotalextinctionofthesmallpoxvirus.Theideawastocapthegloriousachievementof1980whensmallpoxwaseradicatedinthewildbydestroyingthekillervirusinthelasttwolabsthataresupposedtohaveit—oneintheUSandoneinRussia.Ifsmallpoxhadtrulygonefromtheplanetwhatpointwasthereinkeepingthesereserves? 【51】realityofcourseitwasnaiveto【52】thateveryonewouldlet【53】ofsuchapotentpotentialweapon.Undoubtedlyseveralnationsstillhave【54】vials.【55】thelastofficialstocksoflivevirusbredmistrustoftheUSandRussia【56】noobviousgain. NowAmericanresearchershave【57】ananimalmodelofthehumandiseaseopeningthe【58】fortestsonnewtreatmentsandvaccines.Soonceagainthere’’sagoodreasonto【59】thevirus—justin【60】thediseaseputsinareappearance. Howdowe【61】withthemistrustoftheUSandRussia?【62】.Keepthevirus【63】internationalauspicesinawell-guardedUNlaboratorythat’’sopentoallcountries.TheUSwillobjectofcoursejustasitrejectsamultilateralapproachtojustabouteverything.Butitdoesn’’t【64】theideaiswrong.Ifthevirus【65】usefulthenlet’’smakeittheservantofallhumanity——notjustapartofit. smallpoxn.天花 vialn.小瓶 auspicesn.赞助支持 capvt.结束覆盖 potentadj.有效力的强有力的 mistrustn.不信任怀疑
NavajoIndianscreatesandpaintingsbyarranginggrainsofsandground-upmineralsandseedsofvariouscolorsintodesigns.
Interferon Forseveralyearsscientistshavebeentestingasubstancecalledinterferon干扰素apotentialwonderdrugthatisprovingtobeeffectiveintreatingavarietyofailmentsincludingvirusinfectionsbacteriainfectionsandtumors.Todatethenewdrughasprovokednonegativereactionofsufficientsignificancetodiscourageitsuse.Butinspiteofitssuccesslastyearonlyonegramwasproducedintheentireworld. Thereasonforthescarcityliesinthestructureofinterferon.Aspeciesspecificproteintheinterferonproducedfromoneanimalspeciescannotbeusedintreatinganotheranimalspecies.Inotherwordstotreathumanbeingsonlyinterferonproducedbyhumanbeingsmaybeused.Thedrugisproducedbyinfectingwhitebloodcellswithavirus.Fortunatelyitissopotentthattheamountgiveneachpatientperinjectionisverysmall. Unlikeantibiotics抗菌素interferondoesnotattackgermsdirectly.Insteaditmakesunaffectedcellsresistanttoinfectionandpreventsthemultiplicationofviruseswithincells. Asyoumightconcludeoneofthemostdramaticusesofinterferonhasbeeninthetreatmentofcancer.Dr.HansStranderresearchphysicianatSweden’’sfamousKarolinskaInstitutehastreatedmorethanonehundredcancerpatientswiththenewdrug.Amongagroupofselectedpatientswhohadundergonesurgicalproceduresforadvancedcancerhalfweregivenconventionaltreatmentsandtheotherhalfweregiveninterferon.Thesurvivalrateoverathree-yearperiodwas70percentamongthosewhoweretreatedwithinterferonascomparedwithonly10to30percentamongthosewhohadreceivedtheconventionaltreatments. IntheUnitedStatesalarge-scaleprojectsupportedbytheAmericanCancerSocietyisnowunderway.Iftheexperimentissuccessfulinterferoncouldbecomeoneofthegreatestmedicaldiscoveriesofourtime. Interferonisproducedbyinfectingvirusesbacteriaandtumorswithadrug.
Interferon Forseveralyearsscientistshavebeentestingasubstancecalledinterferon干扰素apotentialwonderdrugthatisprovingtobeeffectiveintreatingavarietyofailmentsincludingvirusinfectionsbacteriainfectionsandtumors.Todatethenewdrughasprovokednonegativereactionofsufficientsignificancetodiscourageitsuse.Butinspiteofitssuccesslastyearonlyonegramwasproducedintheentireworld. Thereasonforthescarcityliesinthestructureofinterferon.Aspeciesspecificproteintheinterferonproducedfromoneanimalspeciescannotbeusedintreatinganotheranimalspecies.Inotherwordstotreathumanbeingsonlyinterferonproducedbyhumanbeingsmaybeused.Thedrugisproducedbyinfectingwhitebloodcellswithavirus.Fortunatelyitissopotentthattheamountgiveneachpatientperinjectionisverysmall. Unlikeantibiotics抗菌素interferondoesnotattackgermsdirectly.Insteaditmakesunaffectedcellsresistanttoinfectionandpreventsthemultiplicationofviruseswithincells. Asyoumightconcludeoneofthemostdramaticusesofinterferonhasbeeninthetreatmentofcancer.Dr.HansStranderresearchphysicianatSweden’’sfamousKarolinskaInstitutehastreatedmorethanonehundredcancerpatientswiththenewdrug.Amongagroupofselectedpatientswhohadundergonesurgicalproceduresforadvancedcancerhalfweregivenconventionaltreatmentsandtheotherhalfweregiveninterferon.Thesurvivalrateoverathree-yearperiodwas70percentamongthosewhoweretreatedwithinterferonascomparedwithonly10to30percentamongthosewhohadreceivedtheconventionaltreatments. IntheUnitedStatesalarge-scaleprojectsupportedbytheAmericanCancerSocietyisnowunderway.Iftheexperimentissuccessfulinterferoncouldbecomeoneofthegreatestmedicaldiscoveriesofourtime. Antibioticskillgermsbyattackingthemdirectlywhileinterferondoesnot.
ThepriceissomewhathigherthanIexpected.
OneGoodReasontoLetSmallpoxLive It’’snowafairbetthatwewillneverseethetotalextinctionofthesmallpoxvirus.Theideawastocapthegloriousachievementof1980whensmallpoxwaseradicatedinthewildbydestroyingthekillervirusinthelasttwolabsthataresupposedtohaveit—oneintheUSandoneinRussia.Ifsmallpoxhadtrulygonefromtheplanetwhatpointwasthereinkeepingthesereserves? 【51】realityofcourseitwasnaiveto【52】thateveryonewouldlet【53】ofsuchapotentpotentialweapon.Undoubtedlyseveralnationsstillhave【54】vials.【55】thelastofficialstocksoflivevirusbredmistrustoftheUSandRussia【56】noobviousgain. NowAmericanresearchershave【57】ananimalmodelofthehumandiseaseopeningthe【58】fortestsonnewtreatmentsandvaccines.Soonceagainthere’’sagoodreasonto【59】thevirus—justin【60】thediseaseputsinareappearance. Howdowe【61】withthemistrustoftheUSandRussia?【62】.Keepthevirus【63】internationalauspicesinawell-guardedUNlaboratorythat’’sopentoallcountries.TheUSwillobjectofcoursejustasitrejectsamultilateralapproachtojustabouteverything.Butitdoesn’’t【64】theideaiswrong.Ifthevirus【65】usefulthenlet’’smakeittheservantofallhumanity——notjustapartofit. smallpoxn.天花 vialn.小瓶 auspicesn.赞助支持 capvt.结束覆盖 potentadj.有效力的强有力的 mistrustn.不信任怀疑
NaturalHealthCare Naturalhealthcareisaphilosophyandasetofprinciplesandpracticesbasedonsciencethatleadtoanextraordinarylevelofpersonalhealthandhappiness. Itrecognizestheunityofalllifeandholdsthatphysicalmentalandemotionalhealthcannotbeseparatedandthatpersonalhealthenvironmentalhealthandcommunityhealtharepartsofawhole.Naturalhygiene卫生学teachesthatthebestwaytoachievebesthealthisrightliving—developingself-esteemandapositiveattitudetowardslife;eatingfreshwholenaturalfoods;exercisingregularly;gettingplentyofrestandsleep;gettingplentyoffreshairandsunshine;learningtohandlestress;andavoidingallnegativeinfluencesoflife. Basicprinciples:Naturalhealthcareisuniqueinitsargumentthathealthisnormal—assimpleaslivinginharmonywithnature.Healthanddiseaseareacontinuum连续统一体—thesamephysiological生理的lawsgovernthebodyinsicknessandinhealth.Healing康复isabiologicalprocess—exceptinextraordinarycircumstanceshealingistheresultofactionsundertakenbythebodyonitsownbehalf. Thetraditionofnaturalhealthcare:ThetraditionalprinciplesofnaturalhygieneareexplainedbyHerbertM.SheltoninhisNaturalHygiene:ThePlainWayofLife.Sheltonwrites:Itshouldnotrequireargumenttoconvinceintelligentmenandwomenthatmancanreturntohealthandstrengthonlyuponabasisoflawnaturallawspecificallyuponabasisofthoselawsthatoperatetomakehumanlifepossible.Alllawsessentialtothewelfareofmanarewritteninhisownconstitution.Everyruleofhumanconducttobevaluedinpromotinghumanwelfareandhappinessmustbeinharmonywithhisnature.Nolawnosocialcustomnomoralprinciplecanhaveanyvalidity有效性formanthatdoesnotagreewithhishighestwelfare.Ifitisnotcloselyrelatedtoman’’shighestphysicalmoralandintellectualfitnessitcannotbeconsistentwithhishighestidealsoftruthdutyandenjoyment. Noruleofhumanconductcanbeconsideredimportantinpromotingthewelfareofmanunless______.
TheGeneIndustry Majorcompaniesarealreadyinpursuitofcommercialapplicationsofthenewbiology.Theydreamofplacingenzymesintheautomobiletomonitorexhaustandsenddataonpollutiontoamicroprocessorthatwillthenadjusttheengine.TheyspeakofwhattheNewYorkTimescallsmetal—hungrymicrobesthatmightbeusedtominevaluabletracemetalsfromoceanwater.Theyhavealreadydemandedandwontherighttopatentnewlifeforms. Nervouscriticsincludingmanyscientistsworrythatthereiscorporatenationalinternationalandinter-scientificrivalryintheentirebiotechnologicalfield.Theycreateimagesnotofoilspillsbutofmicrobespillsthatcouldspreaddiseaseanddestroyentirepopulations.Thecreationandaccidentalreleaseofextremelypoisonousmicrobeshoweverisonlyonecauseforalarm.Completelyrationalandrespectablescientistsaretalkingaboutpossibilitiesthatstaggertheimagination. Shouldwebreedpeoplewithcow-likestomachssotheycandigestgrassandhaytherebyrelievingthefoodproblembymodifyingustoeatlowerdownonthefoodchain?Shouldwebiologicallyalterworkerstofitthejobrequirementforexamplecreatingpilotswithfasterreactiontimesorassembly-lineworkersdesignedtodoourmonotonousworkforus?Shouldweattempttoeliminateinferiorpeopleandbreedasuper-race?Hitlertriedthisbutwithoutthegeneticweaponrythatmaysoonissuefromourlaboratories.Shouldweproducesoldierstodoourfighting?Shouldweusegeneticforecastingtopre-eliminateunfitbabies?Shouldwegrowreserveorgansforourselveseachofushavingasitwereasavingsbankfullofsparekidneyliversorhands? Wildasthesenotionsmaysoundeveryonehasitsadvocatesandopposersinthescientificcommunityaswellasitsstrikingcommercialapplication.AstwocriticsofgeneticengineeringJeremyRifkinandTedHowardstateintheirbookWhoShouldPlayGod?BroadScalegeneticengineeringwillprobablybeintroducedtoAmericamuchthesamewayasassemblylinesautomobilesvaccinescomputersandalltheothertechnologies.Aseachnewgeneticadvancebecomescommerciallypracticalanewconsumerneedwillbeexploitedandamarketforthenewtechnologywillbecreated. AccordingtothepassageHitlerattemptedto______.
Interferon Forseveralyearsscientistshavebeentestingasubstancecalledinterferon干扰素apotentialwonderdrugthatisprovingtobeeffectiveintreatingavarietyofailmentsincludingvirusinfectionsbacteriainfectionsandtumors.Todatethenewdrughasprovokednonegativereactionofsufficientsignificancetodiscourageitsuse.Butinspiteofitssuccesslastyearonlyonegramwasproducedintheentireworld. Thereasonforthescarcityliesinthestructureofinterferon.Aspeciesspecificproteintheinterferonproducedfromoneanimalspeciescannotbeusedintreatinganotheranimalspecies.Inotherwordstotreathumanbeingsonlyinterferonproducedbyhumanbeingsmaybeused.Thedrugisproducedbyinfectingwhitebloodcellswithavirus.Fortunatelyitissopotentthattheamountgiveneachpatientperinjectionisverysmall. Unlikeantibiotics抗菌素interferondoesnotattackgermsdirectly.Insteaditmakesunaffectedcellsresistanttoinfectionandpreventsthemultiplicationofviruseswithincells. Asyoumightconcludeoneofthemostdramaticusesofinterferonhasbeeninthetreatmentofcancer.Dr.HansStranderresearchphysicianatSweden’’sfamousKarolinskaInstitutehastreatedmorethanonehundredcancerpatientswiththenewdrug.Amongagroupofselectedpatientswhohadundergonesurgicalproceduresforadvancedcancerhalfweregivenconventionaltreatmentsandtheotherhalfweregiveninterferon.Thesurvivalrateoverathree-yearperiodwas70percentamongthosewhoweretreatedwithinterferonascomparedwithonly10to30percentamongthosewhohadreceivedtheconventionaltreatments. IntheUnitedStatesalarge-scaleprojectsupportedbytheAmericanCancerSocietyisnowunderway.Iftheexperimentissuccessfulinterferoncouldbecomeoneofthegreatestmedicaldiscoveriesofourtime. TheresultofDr.Strandersexperimentswithinterferonisthat70percentamongpatientswhoweretreatedwithinterferonsurvived.
DefectiveGenesandHumanHealth Eachofuscarriesabouthalfadozendefective有缺点的genes.Weremainblissfully快乐地unawareofthisfactunlessweoroneofourcloserelativesareamongstthemanymillionswhosufferfromageneticdisease.Aboutoneintenpeoplehasorwilldevelopatsomelaterstageaninherited遗传的geneticdisorderandapproximately2800specificconditionsareknowntobecausedbydefectsmutationsinjustoneofthepatient’’sgenes.Somesinglegenedisordersarequitecommon-—cystic胞状的fibrosis纤维化isfoundinoneoutofevery2500babiesbornintheWesternWorld—andintotaldiseasesthatcanbetracedtosinglegenedefectsaccountforabout5%ofalladmissionstochildren’’shospitals. Mostofusdonotsufferanyharmfuleffectsfromourdefectivegenesbecausewecarrytwocopiesofnearlyallgenesonederivedfromourmotherandtheotherfromourfather.Theonlyexceptionstothisrulearethegenesfoundonthemalesexchromosomes染色体MaleshaveoneXandoneYchromosometheformerfromthemotherandthelatterfromthefathersoeachcellhasonlyonecopyofthegenesonthesechromosomes.Inthemajorityofcasesonenormalgeneissufficienttoavoidallthesymptomsofdisease.Ifthepotentiallyharmfulgeneisrecessive后退的thenitsnormalcounterpart配对的willcarryoutallthetasksassignedtoboth.Onlyifweinheritfromourparentstwocopiesofthesamerecessivegenewilladiseasedevelop. Ontheotherhandifthegeneisdominant显性的italonecanproducethediseaseevenifitscounterpartisnormal.Clearlyonlythechildrenofaparentwiththediseasecanbeaffectedandthenaverageonlyhalfthechildrenwillbeaffected.Huntington’’schorea舞蹈病aseverediseaseofthenervoussystemwhichbecomesapparentonlyinadulthoodisanexampleofadominantgeneticdisease. FinallytherearetheXchromosome-linkedgeneticdiseases.Asmaleshaveonlyonecopyofthegenesfromthischromosometherearenoothersavailabletofulfillthedefectivegene’’sfunction.ExamplesofsuchdiseasesareDuchennemusculardystrophy营养不良andperhapsmostwellknownofallhemophilia血友病. QueenVictoriawasacarrierofthedefectivegeneresponsibleforhemophiliaandthroughheritwastransmittedtotheroyalfamiliesofRussiaSpainandPrussia.MinorcutsandbruiseswhichwoulddolittleharmtomostpeoplecanprovefataltohemophiliacswholacktheproteinsFactorsVIIIandIV凝血因子VIII和IVinvolvedintheclotting血凝结ofbloodwhicharecodedforbythedefectivegenes.Sadlybeforetheseproteinsweremadeavailablethroughgeneticengineeringhemophiliacsweretreatedwithproteinsisolatedfromhumanblood.Someofthisbloodwascontaminated污损withtheAIDSvirusandhasresultedintragic悲惨的consequencesformanyhemophiliacs.Useofgeneticallyengineeredproteinsintherapeuticapplicationsratherthanbloodproductswillavoidtheseproblemsinthefuture. Notalldefectivegenesnecessarilyproducedetrimental有害的effectssincetheenvironmentinwhichthegeneoperatesisalsoofimportance.Aclassicexampleofageneticdiseasehavingabeneficialeffectonsurvivalisillustratedbytherelationshipbetweensickle-cell镶形血球anemia贫血症andmalaria疟病.Onlyindividualshavingtwocopiesofthesickle-cellgeneandonenormalgeneareunaffectedandmoreimportantlyareabletoresistinfection传染bymalarialparasites寄生虫.Theclearadvantageinthiscaseofhavingonedefectivegeneexplainswhythisgeneiscommoninpopulationsinthoseareasoftheworldwheremalariaisendemic特有的. WhichofthefollowingroyalfamilieswasnotaffectedbyhemophiliathroughQueenVictoria?
OneGoodReasontoLetSmallpoxLive It’’snowafairbetthatwewillneverseethetotalextinctionofthesmallpoxvirus.Theideawastocapthegloriousachievementof1980whensmallpoxwaseradicatedinthewildbydestroyingthekillervirusinthelasttwolabsthataresupposedtohaveit—oneintheUSandoneinRussia.Ifsmallpoxhadtrulygonefromtheplanetwhatpointwasthereinkeepingthesereserves? 【51】realityofcourseitwasnaiveto【52】thateveryonewouldlet【53】ofsuchapotentpotentialweapon.Undoubtedlyseveralnationsstillhave【54】vials.【55】thelastofficialstocksoflivevirusbredmistrustoftheUSandRussia【56】noobviousgain. NowAmericanresearchershave【57】ananimalmodelofthehumandiseaseopeningthe【58】fortestsonnewtreatmentsandvaccines.Soonceagainthere’’sagoodreasonto【59】thevirus—justin【60】thediseaseputsinareappearance. Howdowe【61】withthemistrustoftheUSandRussia?【62】.Keepthevirus【63】internationalauspicesinawell-guardedUNlaboratorythat’’sopentoallcountries.TheUSwillobjectofcoursejustasitrejectsamultilateralapproachtojustabouteverything.Butitdoesn’’t【64】theideaiswrong.Ifthevirus【65】usefulthenlet’’smakeittheservantofallhumanity——notjustapartofit. smallpoxn.天花 vialn.小瓶 auspicesn.赞助支持 capvt.结束覆盖 potentadj.有效力的强有力的 mistrustn.不信任怀疑
NaturalHealthCare Naturalhealthcareisaphilosophyandasetofprinciplesandpracticesbasedonsciencethatleadtoanextraordinarylevelofpersonalhealthandhappiness. Itrecognizestheunityofalllifeandholdsthatphysicalmentalandemotionalhealthcannotbeseparatedandthatpersonalhealthenvironmentalhealthandcommunityhealtharepartsofawhole.Naturalhygiene卫生学teachesthatthebestwaytoachievebesthealthisrightliving—developingself-esteemandapositiveattitudetowardslife;eatingfreshwholenaturalfoods;exercisingregularly;gettingplentyofrestandsleep;gettingplentyoffreshairandsunshine;learningtohandlestress;andavoidingallnegativeinfluencesoflife. Basicprinciples:Naturalhealthcareisuniqueinitsargumentthathealthisnormal—assimpleaslivinginharmonywithnature.Healthanddiseaseareacontinuum连续统一体—thesamephysiological生理的lawsgovernthebodyinsicknessandinhealth.Healing康复isabiologicalprocess—exceptinextraordinarycircumstanceshealingistheresultofactionsundertakenbythebodyonitsownbehalf. Thetraditionofnaturalhealthcare:ThetraditionalprinciplesofnaturalhygieneareexplainedbyHerbertM.SheltoninhisNaturalHygiene:ThePlainWayofLife.Sheltonwrites:Itshouldnotrequireargumenttoconvinceintelligentmenandwomenthatmancanreturntohealthandstrengthonlyuponabasisoflawnaturallawspecificallyuponabasisofthoselawsthatoperatetomakehumanlifepossible.Alllawsessentialtothewelfareofmanarewritteninhisownconstitution.Everyruleofhumanconducttobevaluedinpromotinghumanwelfareandhappinessmustbeinharmonywithhisnature.Nolawnosocialcustomnomoralprinciplecanhaveanyvalidity有效性formanthatdoesnotagreewithhishighestwelfare.Ifitisnotcloselyrelatedtoman’’shighestphysicalmoralandintellectualfitnessitcannotbeconsistentwithhishighestidealsoftruthdutyandenjoyment. Accordingtothepassagephysicalmentalandemotionalhealthare______.
TheGeneIndustry Majorcompaniesarealreadyinpursuitofcommercialapplicationsofthenewbiology.Theydreamofplacingenzymesintheautomobiletomonitorexhaustandsenddataonpollutiontoamicroprocessorthatwillthenadjusttheengine.TheyspeakofwhattheNewYorkTimescallsmetal—hungrymicrobesthatmightbeusedtominevaluabletracemetalsfromoceanwater.Theyhavealreadydemandedandwontherighttopatentnewlifeforms. Nervouscriticsincludingmanyscientistsworrythatthereiscorporatenationalinternationalandinter-scientificrivalryintheentirebiotechnologicalfield.Theycreateimagesnotofoilspillsbutofmicrobespillsthatcouldspreaddiseaseanddestroyentirepopulations.Thecreationandaccidentalreleaseofextremelypoisonousmicrobeshoweverisonlyonecauseforalarm.Completelyrationalandrespectablescientistsaretalkingaboutpossibilitiesthatstaggertheimagination. Shouldwebreedpeoplewithcow-likestomachssotheycandigestgrassandhaytherebyrelievingthefoodproblembymodifyingustoeatlowerdownonthefoodchain?Shouldwebiologicallyalterworkerstofitthejobrequirementforexamplecreatingpilotswithfasterreactiontimesorassembly-lineworkersdesignedtodoourmonotonousworkforus?Shouldweattempttoeliminateinferiorpeopleandbreedasuper-race?Hitlertriedthisbutwithoutthegeneticweaponrythatmaysoonissuefromourlaboratories.Shouldweproducesoldierstodoourfighting?Shouldweusegeneticforecastingtopre-eliminateunfitbabies?Shouldwegrowreserveorgansforourselveseachofushavingasitwereasavingsbankfullofsparekidneyliversorhands? Wildasthesenotionsmaysoundeveryonehasitsadvocatesandopposersinthescientificcommunityaswellasitsstrikingcommercialapplication.AstwocriticsofgeneticengineeringJeremyRifkinandTedHowardstateintheirbookWhoShouldPlayGod?BroadScalegeneticengineeringwillprobablybeintroducedtoAmericamuchthesamewayasassemblylinesautomobilesvaccinescomputersandalltheothertechnologies.Aseachnewgeneticadvancebecomescommerciallypracticalanewconsumerneedwillbeexploitedandamarketforthenewtechnologywillbecreated. Accordingtothepassagewhichofthefollowingwouldworrythecriticsthemost?
NaturalHealthCare Naturalhealthcareisaphilosophyandasetofprinciplesandpracticesbasedonsciencethatleadtoanextraordinarylevelofpersonalhealthandhappiness. Itrecognizestheunityofalllifeandholdsthatphysicalmentalandemotionalhealthcannotbeseparatedandthatpersonalhealthenvironmentalhealthandcommunityhealtharepartsofawhole.Naturalhygiene卫生学teachesthatthebestwaytoachievebesthealthisrightliving—developingself-esteemandapositiveattitudetowardslife;eatingfreshwholenaturalfoods;exercisingregularly;gettingplentyofrestandsleep;gettingplentyoffreshairandsunshine;learningtohandlestress;andavoidingallnegativeinfluencesoflife. Basicprinciples:Naturalhealthcareisuniqueinitsargumentthathealthisnormal—assimpleaslivinginharmonywithnature.Healthanddiseaseareacontinuum连续统一体—thesamephysiological生理的lawsgovernthebodyinsicknessandinhealth.Healing康复isabiologicalprocess—exceptinextraordinarycircumstanceshealingistheresultofactionsundertakenbythebodyonitsownbehalf. Thetraditionofnaturalhealthcare:ThetraditionalprinciplesofnaturalhygieneareexplainedbyHerbertM.SheltoninhisNaturalHygiene:ThePlainWayofLife.Sheltonwrites:Itshouldnotrequireargumenttoconvinceintelligentmenandwomenthatmancanreturntohealthandstrengthonlyuponabasisoflawnaturallawspecificallyuponabasisofthoselawsthatoperatetomakehumanlifepossible.Alllawsessentialtothewelfareofmanarewritteninhisownconstitution.Everyruleofhumanconducttobevaluedinpromotinghumanwelfareandhappinessmustbeinharmonywithhisnature.Nolawnosocialcustomnomoralprinciplecanhaveanyvalidity有效性formanthatdoesnotagreewithhishighestwelfare.Ifitisnotcloselyrelatedtoman’’shighestphysicalmoralandintellectualfitnessitcannotbeconsistentwithhishighestidealsoftruthdutyandenjoyment. InviewofthebasicprinciplesofnaturalhealthcarewhichofthefollowingstatementsisNOTtrue?
Pleaseletmeknowifanyproblemsarise.
OneGoodReasontoLetSmallpoxLive It’’snowafairbetthatwewillneverseethetotalextinctionofthesmallpoxvirus.Theideawastocapthegloriousachievementof1980whensmallpoxwaseradicatedinthewildbydestroyingthekillervirusinthelasttwolabsthataresupposedtohaveit—oneintheUSandoneinRussia.Ifsmallpoxhadtrulygonefromtheplanetwhatpointwasthereinkeepingthesereserves? 【51】realityofcourseitwasnaiveto【52】thateveryonewouldlet【53】ofsuchapotentpotentialweapon.Undoubtedlyseveralnationsstillhave【54】vials.【55】thelastofficialstocksoflivevirusbredmistrustoftheUSandRussia【56】noobviousgain. NowAmericanresearchershave【57】ananimalmodelofthehumandiseaseopeningthe【58】fortestsonnewtreatmentsandvaccines.Soonceagainthere’’sagoodreasonto【59】thevirus—justin【60】thediseaseputsinareappearance. Howdowe【61】withthemistrustoftheUSandRussia?【62】.Keepthevirus【63】internationalauspicesinawell-guardedUNlaboratorythat’’sopentoallcountries.TheUSwillobjectofcoursejustasitrejectsamultilateralapproachtojustabouteverything.Butitdoesn’’t【64】theideaiswrong.Ifthevirus【65】usefulthenlet’’smakeittheservantofallhumanity——notjustapartofit. smallpoxn.天花 vialn.小瓶 auspicesn.赞助支持 capvt.结束覆盖 potentadj.有效力的强有力的 mistrustn.不信任怀疑
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