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计算机执行指令的基本过程分为两步，即从内存把指令读入的过程和执行的过程。其中，读指令是根据______所指的地址读入，而执行指令则是______中的地址。
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计算机中指令执行过程的3个阶段是指取指令
显示指令和执行指令
修改指令和执行指令
分析指令和执行指令
打印指令和执行指令
在计算机中将编好的程序送入内存储器中然后启动计算机工作计算机无需人工干预就能自动逐条取出指令和执行指
计算机的工作过程就是周而复始地获取指令和执行指令的过程
当计算机提供了管态系统态和目态用户态时______必须在管态下执行
从内存中取数的指令
把运算结果送内存的指令
算术运算指令
输入/输出指令
峰值MIPS每秒百万次指令数用来描述计算机的定点运算速度通过对计算机指令集中基本指令的执行速度计算得
8
15
0．125
0．067
计算机中指令的执行过程可以概括为以下步骤第一步读取指令把34中的内容经35送入内存的有关寄存器读出内
指令寄存器
程序计数器
标志寄存器
变址寄存器
请按照正确的次序对计算机软件系统的工作过程排序1CPU将操作系统装入内存2计算机接通电源3CPU从R
请按照正确的次序对下列计算机软件系统的工作过程排序1CPU将操作系统装入内存2计算机接通电源3CPU
计算机启动时所要执行的基本指令信息存放在中
CPU
内存
BIOS
硬盘
峰值MIPS每秒百万次指令数用来描述计算机的定点运算速度通过对计算机指令集中基本指令的执行速度计算得
8
15
0.125
0.067
计算机的基本工作过程可以概括为取指令分析及取数执行等然后再取下一条指令如此周而复始直到遇到停机指令或
计算机软件系统由计算机运行的程序指令程序所使用的数据以及相应的文档组成下面关于指 令的说法错误的是_
计算机中的各种指令构成了指令系统
外存发出命令，指挥内存执行指令
指令是计算机执行某种操作的命令
指令由操作码和地址码组成
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控制器的主要功能有
控制计算机各部件自动连续地工作
控制计算机各部件协调工作
进行逻辑测试
从内存中读取指令和执行指令
计算机的工作过程实际上是周而复始地____________执行指令的过程
计算机软件系统由计算机运行的程序指令程序所使用的数据以及相应的文档组成下面关于指 令的说法错误的是_
计算机中的各种指令构成了指令系统
内存发出命令，指挥 CPU 执行指令
指令是计算机执行某种操作的命令
指令由操作码和地址码组成
关于控制器的作用描述是错误的
从内存中取出一条指令，并指出下一条指令在内存中位置
对指令进行译码或测试，并产生相应的操作控制信号，以便启动规定的动作
指挥并控制存储器、内存和输入/输出设备之间数据流动的方向
使整个电脑指令执行过程一步一步地进行，是计算机的神经中枢
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A Iamawriter．Ispendagreatdealofmytimethinkingaboutthepoweroflanguage－thewayitcanevoke唤起anemotionavisualimageacomplexideaorasimpletruth．Languageisthetoolofmytrade．AndIUSethemall－alltheEnglishIgrewupwith. BomintoaChinesefamilythathadrecentlyarrivedinCaliforniaI’vebeengivingmorethoughttothekindofEnglishmymotherspeaks．LikeothersIhavedescribedittopeopleasbrokenEnglish．Butfeelembarrassedtosaythat．IthasalwaysbotheredmethatIcanthinkofnowaytodescribeitotherthanbrokenasifitweredamagedandneededtobefixedasifitlackedacer’tainwholeness．IveheardothertermsusedlimitedEnglishforexample．Butthey8eemjustasbad．asifeverythingislimitedincludingpeople’sperception认识ofthelimitedEnglishspeaker. Iknowthisforafact．becausewhenIwasgrowingupmymother’slimited’’Englishlimitedmyperceptionofher．1wasashamedofherEnglish．IbelievedthatherEnglishreflectedthequalityofwhatshehadtosay．Thatisbecausesheexpressedthemimperfectlyherthoughtswereimperfect．AndIhadplentyofevidencetosupportmethefactthatpeopleindepartmentstoresatbanks．andatrestaurantsdidnottakeherseriouslydidnotgivehergoodservicepretendednottounderstandherorevenactedasiftheydidnothearher． Istartedwritingfictioninl985．Andforreasonlwon’tgetintotodayIbegantowritestoriesusingaUtheEnglishIgrewupwiththeEnglishsheusedwithmewhichforlackofabettertermmightbedescribedasbrokenandwhatIimaginetobehertranslationofherChineseherinter-nal内在的languageandforthatIsoughttopreservetheessencebutneitheranEnglishnoraChinesestnlcture1wantedtocatchwhatlanguageabilitytestscannevershowherintentionherfeelingstherhythmsofherspeechandthenatureofherthoughts． Theauthorusedtothinkofhermother’sEnglishas．
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A Iamawriter．Ispendagreatdealofmytimethinkingaboutthepoweroflanguage－thewayitcanevoke唤起anemotionavisualimageacomplexideaorasimpletruth．Languageisthetoolofmytrade．AndIUSethemall－alltheEnglishIgrewupwith. BomintoaChinesefamilythathadrecentlyarrivedinCaliforniaI’vebeengivingmorethoughttothekindofEnglishmymotherspeaks．LikeothersIhavedescribedittopeopleasbrokenEnglish．Butfeelembarrassedtosaythat．IthasalwaysbotheredmethatIcanthinkofnowaytodescribeitotherthanbrokenasifitweredamagedandneededtobefixedasifitlackedacer’tainwholeness．IveheardothertermsusedlimitedEnglishforexample．Butthey8eemjustasbad．asifeverythingislimitedincludingpeople’sperception认识ofthelimitedEnglishspeaker. Iknowthisforafact．becausewhenIwasgrowingupmymother’slimited’’Englishlimitedmyperceptionofher．1wasashamedofherEnglish．IbelievedthatherEnglishreflectedthequalityofwhatshehadtosay．Thatisbecausesheexpressedthemimperfectlyherthoughtswereimperfect．AndIhadplentyofevidencetosupportmethefactthatpeopleindepartmentstoresatbanks．andatrestaurantsdidnottakeherseriouslydidnotgivehergoodservicepretendednottounderstandherorevenactedasiftheydidnothearher． Istartedwritingfictioninl985．Andforreasonlwon’tgetintotodayIbegantowritestoriesusingaUtheEnglishIgrewupwiththeEnglishsheusedwithmewhichforlackofabettertermmightbedescribedasbrokenandwhatIimaginetobehertranslationofherChineseherinter-nal内在的languageandforthatIsoughttopreservetheessencebutneitheranEnglishnoraChinesestnlcture1wantedtocatchwhatlanguageabilitytestscannevershowherintentionherfeelingstherhythmsofherspeechandthenatureofherthoughts． Theauthorgraduallyrealizeshermother’sEnglishis．
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B Societiesallovertheworldnameplacesinsimilarways．Quiteoftenthereisnoofficialnamingceremonybutplacestendtobecallednamesaspointsofreferencebypeople．Thenanorganizedbodystepsinandgivestheplaceaname．FrequentlyithappensthataplacehastwonamesOneisnamedbythepeopleandtheotherbythegovernment．Asinmanyareasoldhabitsdiedhardandtheplacecontinuestobecalledbyitsunofficialnamelongafterthemeaningislost． ManyroadsandplacesinSingapore新加坡arenamedinorderthatthepioneerswillberememberedbyfuturegeneration．ThuswehavenamessuchasStamfordRoadandRafflesPlace．Thisisinkeepingwithtraditioninmanycountries——inboththeWestandtheEast． Anotherwayofnamingplacesisnamingthemafterotherplaces．Perhapstheywerenamedtopromotefriendshipsbetweenthetwoplacesoritcouldbethatthepeoplewhousedtolivetherewereoriginallyfromtheplacesthattheroadswerenamedafter．ThemysteryisclearerwhenweseesomeoftheroadsnamedinformerBritishbases．IfyoustepintoSelectorAirbaseyouwillseePiccadillyCircus——0bviouslynamedbysomehomesickRoyalAirForcepersonnel． Someplaceswerenamedaftertheactivitiesthatusedtogoonatthoseplaces． BrasBasahRoadisaninterestingexample．BaseBasahmeanswetriceinMalay马来语．NowwhywouldanyonewanttonamearoadWetRiceRoadThereasonissimple．Duringthepioneeringdayswetricewaslaidouttodryalongthisroad． AfewroadsinSingaporearenamedbytheirshapes．ThereisCircularRoadforone．OtherroadsmayhavepartoftheirnamestodescribetheirshapeslikePayaI．ebarCrescent．Thisroadiscalledacrescent月牙becauseitbeginsonthemainroadmakesacrescentandcomesbacktojointhemainroadagain． Whichofthefollowingplacesisnamedafteraperson
C Nexttimeacustomercomestoyourofficeofferhimacupofcoffee． Andwhenyou’redoingyourholidayshoppingonlinemakesureyou’reholdingalargeglassoficedtea．Thephysicalsensa’tion感觉ofwarmthencouragesemotionalwarmthwhileacolddrinkinhandpreventsyoufrommakingunwisedecision--thosearethepracticallessonbeingdrawnfromrecentresearchbypsychologistJohna．Bargh． Psychologistshaveknownthatoneperson’sperception感知ofanother’swarmthisapowerfuldeterminerinsocialrelationships．JudgingsomeonetobeeitherWflfflTlorcoldisaprimaryconsiderationeventrumpingevidencethatacoldpersonmaybemorecapable．MuchofthisisrootedinveryearlychildhoodexperiencesBarghargueswhenbabies’conceptualsenseoftheworldaroundthemisshapedbyphysicalsensationparticularlywarmthandcoldness．Classicstud—iesbyHarryHarlowpublishedin1958showedmonkeyspreferredtostayclosetoaclothmoth—erratherthanonemadeofwire．evenwhenthewire‘‘mothercarriedafoodbottle．Harlow’Sworkandlaterstudieshaveledpsychologiststostresstheneedforwarmphysicalcontactfromcaregiverstohelpyoungchildrengrowintohealthyadultswithnormalsocialskills． Feelingsofwarmthandcoldnessinsocialjudgmentsappeartobeuniversal． AlthoughnoworldwidestudyhasbeendoneSarghsaysthatdescribingpeopleaswarmorcoldiscommontomanyculturesandstudieshavefoundthoseperceptioninfluencejudgmentindozensofcountries． TotesttherelationshipbetweenphysicalandpsychologicalwarmthBarghconductedanexperi-mentwhichinvolved41collegestudents．Aresearchassistantwhowasunawareofthestudy’Shypotheses假设handedthestudentseitherahotcupofcoffeeoracolddrinktoholdwhiletllereseareherfilledoutashortinformationformThedrinkwasthenhandedback．AfterthatthestudentswereaskedtoratethepersonalityofPersonAbasedonaparticulardescription．ThosewhohadbrieflyheldthewarmdrinkregardedPersonAaswarmerthanthosewhohadheldtheiceddrink． WealegroundedinourphysicalexperiencesevenwhenwethinkabstractlysaysBargh． Wecaninferfromthepassagethat．
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--IsitOKtotakethisseat --Sorry_________.
ThetrafficisheavythisdayI________arriveabitlate socouldyousavemeaplace
下列词语无错别字的一组是
UsuallyJohnwouldbelateformeetings.Butthistime________to mysurprisehearrivedontime.
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B Societiesallovertheworldnameplacesinsimilarways．Quiteoftenthereisnoofficialnamingceremonybutplacestendtobecallednamesaspointsofreferencebypeople．Thenanorganizedbodystepsinandgivestheplaceaname．FrequentlyithappensthataplacehastwonamesOneisnamedbythepeopleandtheotherbythegovernment．Asinmanyareasoldhabitsdiedhardandtheplacecontinuestobecalledbyitsunofficialnamelongafterthemeaningislost． ManyroadsandplacesinSingapore新加坡arenamedinorderthatthepioneerswillberememberedbyfuturegeneration．ThuswehavenamessuchasStamfordRoadandRafflesPlace．Thisisinkeepingwithtraditioninmanycountries——inboththeWestandtheEast． Anotherwayofnamingplacesisnamingthemafterotherplaces．Perhapstheywerenamedtopromotefriendshipsbetweenthetwoplacesoritcouldbethatthepeoplewhousedtolivetherewereoriginallyfromtheplacesthattheroadswerenamedafter．ThemysteryisclearerwhenweseesomeoftheroadsnamedinformerBritishbases．IfyoustepintoSelectorAirbaseyouwillseePiccadillyCircus——0bviouslynamedbysomehomesickRoyalAirForcepersonnel． Someplaceswerenamedaftertheactivitiesthatusedtogoonatthoseplaces． BrasBasahRoadisaninterestingexample．BaseBasahmeanswetriceinMalay马来语．NowwhywouldanyonewanttonamearoadWetRiceRoadThereasonissimple．Duringthepioneeringdayswetricewaslaidouttodryalongthisroad． AfewroadsinSingaporearenamedbytheirshapes．ThereisCircularRoadforone．OtherroadsmayhavepartoftheirnamestodescribetheirshapeslikePayaI．ebarCrescent．Thisroadiscalledacrescent月牙becauseitbeginsonthemainroadmakesacrescentandcomesbacktojointhemainroadagain． WelearnfromParagraphlthat．
They’vewontheirlastthreematches._________Ifindabitsurprising.
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Iclosemyeyesandcanstillhearher—thelittlegirlwitha1．SOstrongandpowerfulwecouldhearherhalfwaydowntheblock．Shewasan2peasantwhoaskedformoneyand3gavethenlythingshehad--herVice．IpausedutsideasmallshopandlistenedShebroughttomymindthe4ofLittleOrphanAnnie．Icouldnotunderstandthewordsshebuthervoicebeggedfor6.ItstoodoutfromthenoisesofArbatStreetpureandimpressivelikethechimeofabell．Shesang7anold—stylelamppostintheshadowofabuildingherannsextendedand8thrownback．Shewassmallandofunremarkablelooks．Herbrownhair9thebun发髻ithadbeenpulledintoandsheoccasionallyreachedupto10astrayDiecefmmherface．HerclothingIcall’trecall．Hervoiceontheotherhandis11imprintedinmymind.Iaskedoneofthetranslatorsaboutthegin．Elainatoldmethatsheandhundredsofotherslikeherthroughoutthe12sovietunionaddtotheirfamilies’incomebyworkingonthestreets.Thechildrenareunableto13schoolandtheirparentsworkfulltime．Thesechildrenknowthattheconsequenceofall14dayisnofoodforthetable．SimilarsituationsoccurredduringtheDe’pression萧条intheUnitedStatesbutthoseAmeficanchildrenwere15shoeshineboysofmel6.Thisgirlwasrealtome． WhenwewalkedpastherIgavehermoney．Itwasnotoutofpityl7ratheradmirationHersmileof18didnotinterrupthersingin9．ThegirlwatchedUSaswewalkeddownthestreet．IknowthisbecausewhenIlookedbackshesmiledagain．We19thatsmileandIknewIcouldneverforgethercourageand20strength．
C Nexttimeacustomercomestoyourofficeofferhimacupofcoffee． Andwhenyou’redoingyourholidayshoppingonlinemakesureyou’reholdingalargeglassoficedtea．Thephysicalsensa’tion感觉ofwarmthencouragesemotionalwarmthwhileacolddrinkinhandpreventsyoufrommakingunwisedecision--thosearethepracticallessonbeingdrawnfromrecentresearchbypsychologistJohna．Bargh． Psychologistshaveknownthatoneperson’sperception感知ofanother’swarmthisapowerfuldeterminerinsocialrelationships．JudgingsomeonetobeeitherWflfflTlorcoldisaprimaryconsiderationeventrumpingevidencethatacoldpersonmaybemorecapable．MuchofthisisrootedinveryearlychildhoodexperiencesBarghargueswhenbabies’conceptualsenseoftheworldaroundthemisshapedbyphysicalsensationparticularlywarmthandcoldness．Classicstud—iesbyHarryHarlowpublishedin1958showedmonkeyspreferredtostayclosetoaclothmoth—erratherthanonemadeofwire．evenwhenthewire‘‘mothercarriedafoodbottle．Harlow’Sworkandlaterstudieshaveledpsychologiststostresstheneedforwarmphysicalcontactfromcaregiverstohelpyoungchildrengrowintohealthyadultswithnormalsocialskills． Feelingsofwarmthandcoldnessinsocialjudgmentsappeartobeuniversal． AlthoughnoworldwidestudyhasbeendoneSarghsaysthatdescribingpeopleaswarmorcoldiscommontomanyculturesandstudieshavefoundthoseperceptioninfluencejudgmentindozensofcountries． TotesttherelationshipbetweenphysicalandpsychologicalwarmthBarghconductedanexperi-mentwhichinvolved41collegestudents．Aresearchassistantwhowasunawareofthestudy’Shypotheses假设handedthestudentseitherahotcupofcoffeeoracolddrinktoholdwhiletllereseareherfilledoutashortinformationformThedrinkwasthenhandedback．AfterthatthestudentswereaskedtoratethepersonalityofPersonAbasedonaparticulardescription．ThosewhohadbrieflyheldthewarmdrinkregardedPersonAaswarmerthanthosewhohadheldtheiceddrink． WealegroundedinourphysicalexperiencesevenwhenwethinkabstractlysaysBargh． TheauthormentionHarlow’sexperimenttoshowthat．
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