人教版高中英语选修七Unit3Undertheseagrammar(6).docx

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1、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯名校名推荐⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯Unit3Undertheseagrammar课时作业第一节阅读理解Computersecurityisacontradictioninterms.Thearrivalofthe“InternetofThingcomputersbakedintoeverythingfromroadsignsandMRIscannerstoartificialbodypartsandinsulin(胰岛素)pumps.Thereislittleevidencethatsucheq

2、uipmentwillbeanymoretrustworthythandesktopcomputers.Hackershavealreadyprovedthattheycantakeremotecontrolofconnectedcarsandpacemakers.However,itistemptingtobelievethatthesecurityproblemcanbesolvedwithyetmoretechnicalwizardry(魔法)andacallforfurtherwatchfulness.Anditiscertainlytrueth

3、atmanyfirmsstillfailtotakesecurityseriouslyenough.Thatrequiresakindoflastinginsistencewhichdoesnotcomenaturallytonon-techfirms.Actually,thereisnowaytomakecomputerscompletelysafe.Softwareishugelycomplex.Acrossitsproducts,Googlemustmanagearound2billionlinesofsourcecode—errorsareuna

4、voidable.Theaverageprogramhas14separatebugs,eachofthemapotentialpointofillegalentry.Suchweaknessesareworsenedbythehistoryoftheinternet,inwhichsecuritywasanafterthought.Thisisnotnecessarilyindespair.Theriskfromcheats,caraccidentsandtheweathercanneverbeavoidedcompletelyeither.Butso

5、cietieshavedevelopedwaysofmanagingsuchrisk—fromgovernmentregulationtotheuseoflegalliability(责任)andinsurancetocreatemoresaferbehaviour.Startwithregulation.Governments’firstpriorityistocontrolfrommakingthesituationworse.Terroristattacksoftenbringcallsforcodestobeweakenedsothatthese

6、curityservicescanbettermonitorwhatindividualsareupto.Butitisimpossibletoweakencodesforterroristsalone.ThesameprotectionthatguardsmessagingprogramslikeWhatsAppalsoguardsbankbusinessandonlineidentities.Computersecurityisbestservedbyencodingthatisstrongforeveryone.Thenextpriorityiss

7、ettingbasicproductregulations.Alackofprofessionalknowledgewillalwaysblocktheabilityofcomputeruserstoprotectthemselves.Sogovernmentsshouldpromote“publichealth”forcomputing.Theycouldinsistthatinternet-conctedcontentsbeupdatedwithfixeswhenfaultsarefound.Theycouldforceuserstochangede

8、fault(默认)usernamesand1⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯