专业英语练习题(请补全答案回传).doc

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1、一、单选题1.AcomputervirusisaprogramdesignedtospreaditselfbyfirstinfectingDfilesorthesystemareasofhardandfloppydisksandthenmakingcopiesofitself.A.sourceB.commandC・anyD.executableDcopiesofalldataon2.Filescanbelostordestroyedaccidentally.Keepremovablestoragemedia.A.backupB.bac

2、kC.blackD.backdown1.Aisnotalinearstructure・D.I-dimensionarrayA.GraphB.QueueC.Stack2.InC,theonlyelementthatcanbedeletedorremovedistheonethatwasinsertedmostrecently.A・alineB・aqueueC.anarrayD・astack3.MostAmeasuresinvolvedataencryptionandpassword.A.securityB・hardwareC・displ

3、ayD・program4.JavatechnologyisbothaprogramminglanguageandaDA・talkB.softwareC.dealD.platform5.EverythingthatacomputerdoesisAbytheCPU.A.overseenB・builtintoC.keptintoD・only二、完型填空题1.VisualizationisanapproachtoITthatpoolsandsharesIBsothatutilizationisoptimizedandsuppliesautom

4、aticallymeetdemand.TraditionalITenvironmentsareoftensilos,wherebothtechnologyandhuman2Carealignedaroundanapplicationorbusinessfunction.Withavirtualized3B,people,processes,andtechnologyarefocusedonmeetingservicelevels,4Disallocateddynamically,resourcesarcoptimizedandthee

5、ntireinfrastructureissimplifiedandflexible.WeofferabroadspectrumofvirtualizationAthatallowscustomerstochoosethemostappropriatepathandoptimizationfocusfortheirITinfrastructureresources・1.A.advantage2.A-profits3.A.system4.A.content5.A.solutionsB.resourcesB.costsB・infrastr

6、uctureB・positionB.networksC.benefitsC.resourcesC・hardwareC・powerC・interfacesD.precedentsD.powersD.linkD・capacityD.connections三、阅读理解题1・Asmentionedearlier,youcansupplyanoptionalstorageclassspecifierwhenyoudeclareavariable・CsupportsthefollowingfourstorageclassspecifiersAut

7、oSpecifiesthatthevariablehasdynamicdurationRegisterDirectsthecompilertostorethevariableinaregisterwheneverpossible.Thisstorageclassisjustusefultothecompilerforoptimization.Anyvariabledeclaredwiththeregisterstorageclassistreatedlikeanautovariable・StaticSpecificsthattheva

8、riablehasfixeddurationExternSpecifiesthatthevariableisexternal;thatis,thevariableisdefinedsomewhereelse(e.g.in