考试宝典职称英语考试卫生类阅读判断练习题二Word格式文档下载.doc
《考试宝典职称英语考试卫生类阅读判断练习题二Word格式文档下载.doc》由会员分享,可在线阅读,更多相关《考试宝典职称英语考试卫生类阅读判断练习题二Word格式文档下载.doc(24页珍藏版)》请在冰豆网上搜索。
smostfearedviruses,asacarrierofgeneswhichcanfightcancerandarangeofdiseasesthatcannotbecured.TheexpelssayHIVhasanalmostperfectabilitytoavoidthebody'
simmune(免疫的)defenses,makingitidealforcarryingreplacementgenesintopatients'
bodies,accordingtotheObservef
AteamattheCalifornia-basedSalkInstitute,oneoftheworld'
sleadingresearchcentersonbiologicalsciences,hascreatedaspecialnewbreedofHIVandhasstartednegotiationswiththeU.S.FoodandDrugAdministration(FDA)tobeginclinicalgenetherapy(治疗)trialsthisyear.ThefirsttrialsareexpectedtoinvolvepatientssufferingfromcancersthatcannotbecuredbysurgeryalthoughprojectleaderProfessorInderVermasaidtheHIVtechniquewouldhave"
farwiderapplications"
.
Theplanremainsverylikelytocausecontroversysinceitinvolvesmakinguseofaviruswhichhascausedmorethan22milliondeathsaroundtheworldinthepasttwodecades.VermasaidthattheideaofusingHIVforabeneficialpurposewas"
shocking'
'
butthefiercenatureofHIVhaddisappearedbyhavingallsixofthepotentiallydeadlygenesremoved.
Illnessessuchasvariouscancersarecausedwhenageneinapatient'
sbodyfailstoworkproperly.Inthepasttwoyears,breakthroughsingenetics(遗传学)haveledgenetherapyscientiststotryandreplacethegenesthatdonotfunctionnormally.
Unfortunately.thebody'
simmunedefenseshavebeenknowntoattackthemodifiedgenesandmakethemlosetheireffectsbeforetheycanstarttheirtaskandprogressinthefieldhasbeenheldupbythelackofasuitablecarrier.
TheHIVvirushastheabilitytoescapefrOm。
andthendestroy,theImmunedefense
cellsdesignedtoprotectourbodiesandthismakesitattractivetoscientistsasawayof
secretlyconveyingreplacementgenesintopatients'
bodies.
1.FDAhasapprovedtheplanofusingHIVtocurecancerinhumans
A.Right
B.Wrong
C.Notmentioned
2.TheideaofusingHIVforabeneficialpurposehasbeenwidelyaccepted
3.HIVcanbesafelyusedtocurecanceronlyifthedeadlygeneshavebeenremoved
4.TheHIVvirusisanexcellentwarriortofightthebody'
simmunecells
5.Othercountriesarealsoexpectedtobeginclinicalgenetherapytrialssoon
6.ItisthelackofmoneythathashelduDtheprogressinusingreplacementgenestocurecancen
7.TheHIVvirushascausedmoredeathsindevelopedcountries
答案:
1.B 2.B 3.A 4.A 5.C 6.B 7.C
Beforethewidespreaduseofcomputers,managerscouldnotmakefulluseoflargeamountsofvaluableinformationaboutacompany'
sactivities.Theinformationeitherreachedmanagerstoolateorwastooexpensivetobeused.Today,managersarefacingawiderangeofdataprocessingandinformationinstruments.Inplaceofafewfinancialcontrols,managerscandrawoncomputer-basedinformationsystemstocontrolactivitiesineveryareaoftheircompany.Onanykindsofperformancemeasures,theinformationprovidedbythesesystemshelpsmanagerscomparestandardswithactualresults,findoutproblems,andtakecorrectiveactionbeforeitistoolatetomakechanges.
Theintroductionofcomputerizedinformationsystemshassharplychangedmanagementcontrolinmanycompanies.Evenaneighborhoodshopkeepermaynowusecomputerstocontrolsales,billing,andotheractivities.Inlargecompanies,electronicdataprocessingsystemsmonitorentireprojectsandsetsofoperations.
Now,thereareabout24millionmicrocomputersinuseintheUnitedStates——oneforevery10citizens.Itisestimatedthatby1996,61percentofAmericanmanagerswillbeusingsomesortofelectronicworkstation.Inorderformanagerstobesurethatthecomputer-basedinformationtheyarereceivingisaccurate,theyneedtounderstandhowcomputerswork.However,inmostcasestheydonotneedtolearnhowtoprogramcomputers.Rather,managersshouldunderstandhowcomputerizedinformationsystemswork;
howtheyaredeveloped;
theirlimitationsandcosts;
andthemannerinwhichinformationsystemsmaybeused.Suchanunderstandingisnotdifficulttoachieve.
Oneresearchfoundthatbusinessfirmsweremoresuccessfulinteachingbasicinformationaboutcomputerstobusinessgraduatesthantheywereinteachingbusinesssubjectstocomputersciencegraduates.
16Today,conventionalfinancialcontrolsarestillexercisedinsomeminorareassuchasbillingandvocationaltraining.
ARightBWrongCNotmention