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1、精品文档_卫生类-相同项单选集1、UsingHIVVirustoCureCancerScientistsareplanningtousehumanimmunodeficiency(免疫缺陷)virus(HIV),oneofmankindsmostfearedviruses,asacarrierofgeneswhichcanfightcancerandarangeofdiseasesthatcannotbecured.TheexpertssayHIVhasanalmostperfectabilitytoavoidthebodysimmune(免疫的)defenses,makingitidealf
2、orcarryingreplacementgenesintopatientsbodies,accordingtotheObserver.FDAhasapprovedtheplanofusingHIVtocurecancerinhumans.A.RightB.WrongC.NotmentionedA.AteamattheCalifornia-basedSalkInstitute,oneoftheworldsleadingresearchcentersonbiologicalsciences,hascreatedaspecialnewbreedofHIVandhasstartednegotiati
3、onswiththeUSFoodandDrugAdministration(FDtobeginclinicalgenetherapy(治疗)trialsthisyear.ThefirsttrialsareexpectedtoinvolvepatientssufferingfromcancersthatcannotbecuredbysurgeryalthoughprojectleaderProfessorInderVermasaidtheHIVtechniquewouldhave”farwiderapplications”.B.Theplanremainsverylikelytocausecon
4、troversysinceitinvolvesmakinguseofaviruswhichhascausedmorethan22milliondeathsaroundtheworldinthepasttwodecades.VermasaidthattheideaofusingHIVforabeneficialpurposewas”shocking”butthefiercenatureofHIVhaddisappearedbyhavingallsixofthepotentiallydeadlygenesremoved.C.Illnessessuchasvariouscancersarecause
5、dwhenageneinapatientsbodyfailstoworkproperly.Inthepasttwoyears,breakthroughsingenetics(遗传学)haveledgenetherapyscientiststotryandreplacethegenesthatdonotfunctionnormally.D.Unfortunately,thebodysimmunedefenseshavebeenknowntoattackthemodifiedgenesandmakethemlosetheireffectsbeforetheycanstarttheirtaskand
6、progressinthefieldhasbeenheldupbythelackofasuitablecarrier.E.TheHIVvirushastheabilitytoescapefrom,andthendestroy,theimmunedefenseceilsdesignedtoprotectourbodiesandthismakesitattractivetoscientistsasawayofsecretlyconveyingreplacementgenesintopatientsbodies.2、UsingHIVVirustoCureCancerScientistsareplan
7、ningtousehumanimmunodeficiency(免疫缺陷)virus(HIV),oneofmankindsmostfearedviruses,asacarrierofgeneswhichcanfightcancerandarangeofdiseasesthatcannotbecured.TheexpertssayHIVhasanalmostperfectabilitytoavoidthebodysimmune(免疫的)defenses,makingitidealforcarryingreplacementgenesintopatientsbodies,accordingtothe
8、Observer.TheideaofusingHIVforabeneficialpurposehasbeenwidelyaccepted.A.RightB.WrongC.NotmentionedA.AteamattheCalifornia-basedSalkInstitute,oneoftheworldsleadingresearchcentersonbiologicalsciences,hascreatedaspecialnewbreedofHIVandhasstartednegotiationswiththeUSFoodandDrugAdministration(FDtobeginclin
9、icalgenetherapy(治疗)trialsthisyear.ThefirsttrialsareexpectedtoinvolvepatientssufferingfromcancersthatcannotbecuredbysurgeryalthoughprojectleaderProfessorInderVermasaidtheHIVtechniquewouldhave”farwiderapplications”.B.Theplanremainsverylikelytocausecontroversysinceitinvolvesmakinguseofaviruswhichhascau
10、sedmorethan22milliondeathsaroundtheworldinthepasttwodecades.VermasaidthattheideaofusingHIVforabeneficialpurposewas”shocking”butthefiercenatureofHIVhaddisappearedbyhavingallsixofthepotentiallydeadlygenesremoved.C.Illnessessuchasvariouscancersarecausedwhenageneinapatientsbodyfailstoworkproperly.Inthep
11、asttwoyears,breakthroughsingenetics(遗传学)haveledgenetherapyscientiststotryandreplacethegenesthatdonotfunctionnormally.D.Unfortunately,thebodysimmunedefenseshavebeenknowntoattackthemodifiedgenesandmakethemlosetheireffectsbeforetheycanstarttheirtaskandprogressinthefieldhasbeenheldupbythelackofasuitable
12、carrier.E.TheHIVvirushastheabilitytoescapefrom,andthendestroy,theimmunedefenseceilsdesignedtoprotectourbodiesandthismakesitattractivetoscientistsasawayofsecretlyconveyingreplacementgenesintopatientsbodies.3、UsingHIVVirustoCureCancerScientistsareplanningtousehumanimmunodeficiency(免疫缺陷)virus(HIV),oneo
13、fmankindsmostfearedviruses,asacarrierofgeneswhichcanfightcancerandarangeofdiseasesthatcannotbecured.TheexpertssayHIVhasanalmostperfectabilitytoavoidthebodysimmune(免疫的)defenses,makingitidealforcarryingreplacementgenesintopatientsbodies,accordingtotheObserver.HIVcanbesafelyusedtocurecanceronlyilthedea
14、dlygeneshavebeenremoved.A.RightB.WrongC.NotmentionedA.AteamattheCalifornia-basedSalkInstitute,oneoftheworldsleadingresearchcentersonbiologicalsciences,hascreatedaspecialnewbreedofHIVandhasstartednegotiationswiththeUSFoodandDrugAdministration(FDtobeginclinicalgenetherapy(治疗)trialsthisyear.Thefirsttri
15、alsareexpectedtoinvolvepatientssufferingfromcancersthatcannotbecuredbysurgeryalthoughprojectleaderProfessorInderVermasaidtheHIVtechniquewouldhave”farwiderapplications”.B.Theplanremainsverylikelytocausecontroversysinceitinvolvesmakinguseofaviruswhichhascausedmorethan22milliondeathsaroundtheworldinthepasttwodecades.VermasaidthattheideaofusingHIVforabeneficialpurposewas”shocking”butthefiercenatureofHIVhaddisappearedbyhavingallsixofthepotentiallydeadlygenesremoved.C.Illnessessuchasvariouscancersarecausedwhenageneinapatientsbodyfailstoworkproperly.Inth
