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时间:2020-03-28
《【考试宝典】2014年职称英语考试卫生类阅读判断练习题(二).doc》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、职称英语考试宝典系列软件 【考试宝典】2014年职称英语考试卫生类阅读判断练习题(二)UsingHIVVirustoCureCancer Scientistsareplanningtousehumanimmunodeficiency(免疫缺陷)virus(HIV),oneofmankind'smostfearedviruses,asacarrierofgeneswhichcanfightcancerandarangeofdiseasesthatcannotbecured.Theexpelssay
2、HIVhasanalmostperfectabilitytoavoidthebody'simmune(免疫的)defenses,makingitidealforcarryingreplacementgenesintopatients'bodies,accordingtotheObservef AteamattheCalifornia-basedSalkInstitute,oneoftheworld'sleadingresearchcentersonbiologicalsciences,hascr
3、eatedaspecialnewbreedofHIVandhasstartednegotiationswiththeU.S.FoodandDrugAdministration(FDA)tobeginclinicalgenetherapy(治疗)trialsthisyear.ThefirsttrialsareexpectedtoinvolvepatientssufferingfromcancersthatcannotbecuredbysurgeryalthoughprojectleaderProfe
4、ssorInderVermasaidtheHIVtechniquewouldhave"farwiderapplications".职称英语考试宝典系列软件 Theplanremainsverylikelytocausecontroversysinceitinvolvesmakinguseofaviruswhichhascausedmorethan22milliondeathsaroundtheworldinthepasttwodecades.Vermasaidthattheideaofusing
5、HIVforabeneficialpurposewas"shocking''butthefiercenatureofHIVhaddisappearedbyhavingallsixofthepotentiallydeadlygenesremoved. Illnessessuchasvariouscancersarecausedwhenageneinapatient'sbodyfailstoworkproperly.Inthepasttwoyears,breakthroughsingenetics(
6、遗传学)haveledgenetherapyscientiststotryandreplacethegenesthatdonotfunctionnormally. Unfortunately.thebody'simmunedefenseshavebeenknowntoattackthemodifiedgenesandmakethemlosetheireffectsbeforetheycanstarttheirtaskandprogressinthefieldhasbeenheldupbythel
7、ackofasuitablecarrier. TheHIVvirushastheabilitytoescapefrOm。andthendestroy,theImmunedefense cellsdesignedtoprotectourbodiesandthismakesitattractivetoscientistsasawayof职称英语考试宝典系列软件 secretlyconveyingreplacementgenesintopatients'bodies. 1.FDAhasappro
8、vedtheplanofusingHIVtocurecancerinhumans A.Right B.Wrong C.Notmentioned 2.TheideaofusingHIVforabeneficialpurposehasbeenwidelyaccepted A.Right B.Wrong C.Notmentioned 3.HIVcanbesafelyusedtocurecanceronlyifthedeadlygeneshavebeenremoved A
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