为你找到 1000 条关于 微机2-1.6 的结果
PASSAGETWO(1)Sincethedawnofhumaningenuity,peoplehavedevisedevermorecunningtoolstocopewithworkthatisdangerous,boring,burdensome,orjustplainnasty.Thatcompulsionhasresultedinrobotics—thescienceofconferringvarioushumancapabilitiesonmachines.Andifscientistshaveyettocreatethemechanicalversionofsciencefiction,theyhavebeguntocomeclose.(2)Asaresult,themodernworldisincreasinglypopulatedbyintelligentgizmoswhosepresencewebarelynoticebutwhoseuniversalexistencehasremovedmuchhumanlabor.Ourfactorieshumtotherhythmofrobotassemblyarms.Ourbankingisdoneatautomatedtellerterminalsthatthankuswithmechanicalpolitenessforthetransaction.Oursubwaytrainsarecontrolledbytirelessrobot-drivers.Andthankstothecontinualminiaturizationofelectronicsandmicro-mechanics,therearealreadyrobotsystemsthatcanperformsomekindsofbrainandbonesurgerywithsubmillimeteraccuracy—fargreaterprecisionthanhighlyskilledphysicianscanachievewiththeirhandsalone.(3)Butifrobotsaretoreachthenextstageoflaborsavingutility,theywillhavetooperatewithlesshumansupervisionandbeabletomakeatleastafewdecisionsforthemselves—goalsthatposearealchallenge.“Whileweknowhowtotellarobottohandleaspecificerror,”saysDaveLavery,managerofaroboticsprogramatNASA,“wecan'tyetgivearobotenough‘commonsense’toreliablyinteractwithadynamicworld.”(4)Indeed,thequestfortrueartificialintelligencehasproducedverymixedresults.Despiteaspellofinitialoptimisminthe1960sand1970swhenitappearedthattransistorcircuitsandmicroprocessorsmightbeabletocopytheactionofthehumanbrainbytheyear2010,researcherslatelyhavebeguntoextendthatforecastbydecadesifnotcenturies.(5)Whattheyfound,inattemptingtomodelthought,isthatthehumanbrain'sroughlyonehundredbillionnervecellsaremuchmoretalented—andhumanperceptionfarmorecomplicated—thanpreviouslyimagined.Theyhavebuiltrobotsthatcanrecognizetheerrorofamachinepanelbyafractionofamillimeterinacontrolledfactoryenvironment.Butthehumanmindcanglimpsearapidlychangingsceneandimmediatelydisregardthe98percentthatisirrelevant,instantaneouslyfocusingonthemonkeyatthesideofawindingforestroadorthesinglesuspiciousfaceinabigcrowd.ThemostadvancedcomputersystemsonEarthcan'tapproachthatkindofability,andneuroscientistsstilldon'tknowquitehowwedoit.28.Accordingtothetext,whatisbeyondman'sabilitynowistodesignarobotthatcan()
【答案】 D  【考点】 事实细节题。  【分析】 根据“超越人类能力”这个关键信息,我们可以定位到第三段中“Dave Lavery”的第二句话,即“we can’t yet give a robot enough ‘common sens...
PASSAGETWO(1)Sincethedawnofhumaningenuity,peoplehavedevisedevermorecunningtoolstocopewithworkthatisdangerous,boring,burdensome,orjustplainnasty.Thatcompulsionhasresultedinrobotics—thescienceofconferringvarioushumancapabilitiesonmachines.Andifscientistshaveyettocreatethemechanicalversionofsciencefiction,theyhavebeguntocomeclose.(2)Asaresult,themodernworldisincreasinglypopulatedbyintelligentgizmoswhosepresencewebarelynoticebutwhoseuniversalexistencehasremovedmuchhumanlabor.Ourfactorieshumtotherhythmofrobotassemblyarms.Ourbankingisdoneatautomatedtellerterminalsthatthankuswithmechanicalpolitenessforthetransaction.Oursubwaytrainsarecontrolledbytirelessrobot-drivers.Andthankstothecontinualminiaturizationofelectronicsandmicro-mechanics,therearealreadyrobotsystemsthatcanperformsomekindsofbrainandbonesurgerywithsubmillimeteraccuracy—fargreaterprecisionthanhighlyskilledphysicianscanachievewiththeirhandsalone.(3)Butifrobotsaretoreachthenextstageoflaborsavingutility,theywillhavetooperatewithlesshumansupervisionandbeabletomakeatleastafewdecisionsforthemselves—goalsthatposearealchallenge.“Whileweknowhowtotellarobottohandleaspecificerror,”saysDaveLavery,managerofaroboticsprogramatNASA,“wecan'tyetgivearobotenough‘commonsense’toreliablyinteractwithadynamicworld.”(4)Indeed,thequestfortrueartificialintelligencehasproducedverymixedresults.Despiteaspellofinitialoptimisminthe1960sand1970swhenitappearedthattransistorcircuitsandmicroprocessorsmightbeabletocopytheactionofthehumanbrainbytheyear2010,researcherslatelyhavebeguntoextendthatforecastbydecadesifnotcenturies.(5)Whattheyfound,inattemptingtomodelthought,isthatthehumanbrain'sroughlyonehundredbillionnervecellsaremuchmoretalented—andhumanperceptionfarmorecomplicated—thanpreviouslyimagined.Theyhavebuiltrobotsthatcanrecognizetheerrorofamachinepanelbyafractionofamillimeterinacontrolledfactoryenvironment.Butthehumanmindcanglimpsearapidlychangingsceneandimmediatelydisregardthe98percentthatisirrelevant,instantaneouslyfocusingonthemonkeyatthesideofawindingforestroadorthesinglesuspiciousfaceinabigcrowd.ThemostadvancedcomputersystemsonEarthcan'tapproachthatkindofability,andneuroscientistsstilldon'tknowquitehowwedoit.29.Besidesreducinghumanlabor,robotscanalso()
【答案】 B  【考点】 事实细节题。  【分析】 本题要求考生寻找机器人还能够从事什么工作,这就需要对四个选项进行比较。寻找答案。[A]提到机器人能够为自己做几个决策,通过“decision”这个单词可以定位到第三段第一句话“但是如果机器...
PASSAGETWO(1)Sincethedawnofhumaningenuity,peoplehavedevisedevermorecunningtoolstocopewithworkthatisdangerous,boring,burdensome,orjustplainnasty.Thatcompulsionhasresultedinrobotics—thescienceofconferringvarioushumancapabilitiesonmachines.Andifscientistshaveyettocreatethemechanicalversionofsciencefiction,theyhavebeguntocomeclose.(2)Asaresult,themodernworldisincreasinglypopulatedbyintelligentgizmoswhosepresencewebarelynoticebutwhoseuniversalexistencehasremovedmuchhumanlabor.Ourfactorieshumtotherhythmofrobotassemblyarms.Ourbankingisdoneatautomatedtellerterminalsthatthankuswithmechanicalpolitenessforthetransaction.Oursubwaytrainsarecontrolledbytirelessrobot-drivers.Andthankstothecontinualminiaturizationofelectronicsandmicro-mechanics,therearealreadyrobotsystemsthatcanperformsomekindsofbrainandbonesurgerywithsubmillimeteraccuracy—fargreaterprecisionthanhighlyskilledphysicianscanachievewiththeirhandsalone.(3)Butifrobotsaretoreachthenextstageoflaborsavingutility,theywillhavetooperatewithlesshumansupervisionandbeabletomakeatleastafewdecisionsforthemselves—goalsthatposearealchallenge.“Whileweknowhowtotellarobottohandleaspecificerror,”saysDaveLavery,managerofaroboticsprogramatNASA,“wecan'tyetgivearobotenough‘commonsense’toreliablyinteractwithadynamicworld.”(4)Indeed,thequestfortrueartificialintelligencehasproducedverymixedresults.Despiteaspellofinitialoptimisminthe1960sand1970swhenitappearedthattransistorcircuitsandmicroprocessorsmightbeabletocopytheactionofthehumanbrainbytheyear2010,researcherslatelyhavebeguntoextendthatforecastbydecadesifnotcenturies.(5)Whattheyfound,inattemptingtomodelthought,isthatthehumanbrain'sroughlyonehundredbillionnervecellsaremuchmoretalented—andhumanperceptionfarmorecomplicated—thanpreviouslyimagined.Theyhavebuiltrobotsthatcanrecognizetheerrorofamachinepanelbyafractionofamillimeterinacontrolledfactoryenvironment.Butthehumanmindcanglimpsearapidlychangingsceneandimmediatelydisregardthe98percentthatisirrelevant,instantaneouslyfocusingonthemonkeyatthesideofawindingforestroadorthesinglesuspiciousfaceinabigcrowd.ThemostadvancedcomputersystemsonEarthcan'tapproachthatkindofability,andneuroscientistsstilldon'tknowquitehowwedoit.30.Theauthorusestheexampleofamonkeytoarguethatrobotsare()
【答案】 C  【考点】 作者意图题。  【分析】 作者最后一段提到“猴子”这个例子,是考查文章最后一段的理解。由于文章举这个例子就是为了说明计算机虽然功能强大,但是仍然无法和人脑的复杂性相比,因为人脑看一眼迅速变化的场景就能够迅速的排除不...
PASSAGETHREE(1)Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoilhasjumpedtoalmost10lastDecember.Thisnear-triplingofoilpricescallsupscarymemoriesofthe1973oilshock,whenpricesquadrupled,and1979-1980,whentheyalsoalmosttripled.Bothpreviousshocksresultedindouble-digitinflationandglobaleconomicdecline.Sowherearetheheadlineswarningofgloomanddoomthistime?(2)TheoilpricewasgivenanotherpushupthisweekwhenIraqsuspendedoilexports.Strengtheningeconomicgrowth,atthesametimeaswintergripsthenorthernhemisphere,couldpushthepricehigherstillintheshortterm.(3)Yettherearegoodreasonstoexpecttheeconomicconsequencesnowtobelessseverethaninthe1970s.Inmostcountriesthecostofcrudeoilnowaccountsforasmallershareofthepriceofpetrolthanitdidinthe1970s.InEurope,taxesaccountforuptofour-fifthsoftheretailprice,soevenquitebigchangesinthepriceofcrudehaveamoremutedeffectonpumppricesthaninthepast.(4)Richeconomiesarealsolessdependentonoilthantheywere,andsolesssensitivetoswingsintheoilprice.Energyconservation,ashifttootherfuelsandadeclineintheimportanceofheavy,energy-intensiveindustrieshavereducedoilconsumption.Software,consultancyandmobiletelephonesusefarlessoilthansteelorcarproduction.ForeachdollarofGDP(inconstantprices)richeconomiesnowusenearly50%lessoilthanin1973.TheOECDestimatesinitslatestEconomicOutlookthat,ifoilpricesaveraged13in1998,thiswouldincreasetheoilimportbillinricheconomiesbyonly0.25-0.5%ofGDP.Thatislessthanone-quarteroftheincomelossin1974or1980.Ontheotherhand,oil-importingemergingeconomies—towhichheavyindustryhasshifted—havebecomemoreenergy-intensive,andsocouldbemoreseriouslysqueezed.(5)Onemorereasonnottolosesleepovertheriseinoilpricesisthat,unliketherisesinthe1970s,ithasnotoccurredagainstthebackgroundofgeneralcommodity-priceinflationandglobalexcessdemand.Asizableportionoftheworldisonlyjustemergingfromeconomicdecline.TheEconomist'scommoditypriceindexisbroadlyunchangingfromayearago.In1973commoditypricesjumpedby70%,andin1979byalmost30%. 31.Themainreasonforthelatestriseofoilpriceis
【答案】 B  【考点】 事实细节题。  【分析】 根据题干可以定位到第一段的第二句话“Since OPEC agreed to supply-cuts in March, the price of crude oilhas jumped ...
PASSAGETHREE(1)Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoilhasjumpedtoalmost10lastDecember.Thisnear-triplingofoilpricescallsupscarymemoriesofthe1973oilshock,whenpricesquadrupled,and1979-1980,whentheyalsoalmosttripled.Bothpreviousshocksresultedindouble-digitinflationandglobaleconomicdecline.Sowherearetheheadlineswarningofgloomanddoomthistime?(2)TheoilpricewasgivenanotherpushupthisweekwhenIraqsuspendedoilexports.Strengtheningeconomicgrowth,atthesametimeaswintergripsthenorthernhemisphere,couldpushthepricehigherstillintheshortterm.(3)Yettherearegoodreasonstoexpecttheeconomicconsequencesnowtobelessseverethaninthe1970s.Inmostcountriesthecostofcrudeoilnowaccountsforasmallershareofthepriceofpetrolthanitdidinthe1970s.InEurope,taxesaccountforuptofour-fifthsoftheretailprice,soevenquitebigchangesinthepriceofcrudehaveamoremutedeffectonpumppricesthaninthepast.(4)Richeconomiesarealsolessdependentonoilthantheywere,andsolesssensitivetoswingsintheoilprice.Energyconservation,ashifttootherfuelsandadeclineintheimportanceofheavy,energy-intensiveindustrieshavereducedoilconsumption.Software,consultancyandmobiletelephonesusefarlessoilthansteelorcarproduction.ForeachdollarofGDP(inconstantprices)richeconomiesnowusenearly50%lessoilthanin1973.TheOECDestimatesinitslatestEconomicOutlookthat,ifoilpricesaveraged13in1998,thiswouldincreasetheoilimportbillinricheconomiesbyonly0.25-0.5%ofGDP.Thatislessthanone-quarteroftheincomelossin1974or1980.Ontheotherhand,oil-importingemergingeconomies—towhichheavyindustryhasshifted—havebecomemoreenergy-intensive,andsocouldbemoreseriouslysqueezed.(5)Onemorereasonnottolosesleepovertheriseinoilpricesisthat,unliketherisesinthe1970s,ithasnotoccurredagainstthebackgroundofgeneralcommodity-priceinflationandglobalexcessdemand.Asizableportionoftheworldisonlyjustemergingfromeconomicdecline.TheEconomist'scommoditypriceindexisbroadlyunchangingfromayearago.In1973commoditypricesjumpedby70%,andin1979byalmost30%.32.Itcanbeinferredfromthetextthattheretailpriceofpetrolwillgoupdramaticallyif()
【答案】 D  【考点】 推断题。  【分析】 根据题干可以定位到第三段的第三句话“In Europe, taxes account for up to four-fifths of the retail price,so even qui...
PASSAGETHREE(1)Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoilhasjumpedtoalmost10lastDecember.Thisnear-triplingofoilpricescallsupscarymemoriesofthe1973oilshock,whenpricesquadrupled,and1979-1980,whentheyalsoalmosttripled.Bothpreviousshocksresultedindouble-digitinflationandglobaleconomicdecline.Sowherearetheheadlineswarningofgloomanddoomthistime?(2)TheoilpricewasgivenanotherpushupthisweekwhenIraqsuspendedoilexports.Strengtheningeconomicgrowth,atthesametimeaswintergripsthenorthernhemisphere,couldpushthepricehigherstillintheshortterm.(3)Yettherearegoodreasonstoexpecttheeconomicconsequencesnowtobelessseverethaninthe1970s.Inmostcountriesthecostofcrudeoilnowaccountsforasmallershareofthepriceofpetrolthanitdidinthe1970s.InEurope,taxesaccountforuptofour-fifthsoftheretailprice,soevenquitebigchangesinthepriceofcrudehaveamoremutedeffectonpumppricesthaninthepast.(4)Richeconomiesarealsolessdependentonoilthantheywere,andsolesssensitivetoswingsintheoilprice.Energyconservation,ashifttootherfuelsandadeclineintheimportanceofheavy,energy-intensiveindustrieshavereducedoilconsumption.Software,consultancyandmobiletelephonesusefarlessoilthansteelorcarproduction.ForeachdollarofGDP(inconstantprices)richeconomiesnowusenearly50%lessoilthanin1973.TheOECDestimatesinitslatestEconomicOutlookthat,ifoilpricesaveraged13in1998,thiswouldincreasetheoilimportbillinricheconomiesbyonly0.25-0.5%ofGDP.Thatislessthanone-quarteroftheincomelossin1974or1980.Ontheotherhand,oil-importingemergingeconomies—towhichheavyindustryhasshifted—havebecomemoreenergy-intensive,andsocouldbemoreseriouslysqueezed.(5)Onemorereasonnottolosesleepovertheriseinoilpricesisthat,unliketherisesinthe1970s,ithasnotoccurredagainstthebackgroundofgeneralcommodity-priceinflationandglobalexcessdemand.Asizableportionoftheworldisonlyjustemergingfromeconomicdecline.TheEconomist'scommoditypriceindexisbroadlyunchangingfromayearago.In1973commoditypricesjumpedby70%,andin1979byalmost30%.33.TheestimatesinEconomicOutlookshowthatinrichcountries
【答案】 D  【考点】 推断题。  【分析】 根据本题的关键词“《经济展望》的估计”可以定位到“The OECD estimates in its latest Economic outlook that, if oil prices a...
PASSAGETHREE(1)Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoilhasjumpedtoalmost10lastDecember.Thisnear-triplingofoilpricescallsupscarymemoriesofthe1973oilshock,whenpricesquadrupled,and1979-1980,whentheyalsoalmosttripled.Bothpreviousshocksresultedindouble-digitinflationandglobaleconomicdecline.Sowherearetheheadlineswarningofgloomanddoomthistime?(2)TheoilpricewasgivenanotherpushupthisweekwhenIraqsuspendedoilexports.Strengtheningeconomicgrowth,atthesametimeaswintergripsthenorthernhemisphere,couldpushthepricehigherstillintheshortterm.(3)Yettherearegoodreasonstoexpecttheeconomicconsequencesnowtobelessseverethaninthe1970s.Inmostcountriesthecostofcrudeoilnowaccountsforasmallershareofthepriceofpetrolthanitdidinthe1970s.InEurope,taxesaccountforuptofour-fifthsoftheretailprice,soevenquitebigchangesinthepriceofcrudehaveamoremutedeffectonpumppricesthaninthepast.(4)Richeconomiesarealsolessdependentonoilthantheywere,andsolesssensitivetoswingsintheoilprice.Energyconservation,ashifttootherfuelsandadeclineintheimportanceofheavy,energy-intensiveindustrieshavereducedoilconsumption.Software,consultancyandmobiletelephonesusefarlessoilthansteelorcarproduction.ForeachdollarofGDP(inconstantprices)richeconomiesnowusenearly50%lessoilthanin1973.TheOECDestimatesinitslatestEconomicOutlookthat,ifoilpricesaveraged13in1998,thiswouldincreasetheoilimportbillinricheconomiesbyonly0.25-0.5%ofGDP.Thatislessthanone-quarteroftheincomelossin1974or1980.Ontheotherhand,oil-importingemergingeconomies—towhichheavyindustryhasshifted—havebecomemoreenergy-intensive,andsocouldbemoreseriouslysqueezed.(5)Onemorereasonnottolosesleepovertheriseinoilpricesisthat,unliketherisesinthe1970s,ithasnotoccurredagainstthebackgroundofgeneralcommodity-priceinflationandglobalexcessdemand.Asizableportionoftheworldisonlyjustemergingfromeconomicdecline.TheEconomist'scommoditypriceindexisbroadlyunchangingfromayearago.In1973commoditypricesjumpedby70%,andin1979byalmost30%.34.Wecandrawaconclusionfromthetextthat()
【答案】 A  【考点】 文章主旨题。  【分析】 本题的几个选项需要通篇理解。文章第三段指出“油价的经济影响不会那么严重”,作者指出其原因是“原油价格占汽油价格的比例不高,发达国家对石油的依赖减弱,此次涨价的背景不一样了”。文章最后一段说...
PASSAGETHREE(1)Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoilhasjumpedtoalmost10lastDecember.Thisnear-triplingofoilpricescallsupscarymemoriesofthe1973oilshock,whenpricesquadrupled,and1979-1980,whentheyalsoalmosttripled.Bothpreviousshocksresultedindouble-digitinflationandglobaleconomicdecline.Sowherearetheheadlineswarningofgloomanddoomthistime?(2)TheoilpricewasgivenanotherpushupthisweekwhenIraqsuspendedoilexports.Strengtheningeconomicgrowth,atthesametimeaswintergripsthenorthernhemisphere,couldpushthepricehigherstillintheshortterm.(3)Yettherearegoodreasonstoexpecttheeconomicconsequencesnowtobelessseverethaninthe1970s.Inmostcountriesthecostofcrudeoilnowaccountsforasmallershareofthepriceofpetrolthanitdidinthe1970s.InEurope,taxesaccountforuptofour-fifthsoftheretailprice,soevenquitebigchangesinthepriceofcrudehaveamoremutedeffectonpumppricesthaninthepast.(4)Richeconomiesarealsolessdependentonoilthantheywere,andsolesssensitivetoswingsintheoilprice.Energyconservation,ashifttootherfuelsandadeclineintheimportanceofheavy,energy-intensiveindustrieshavereducedoilconsumption.Software,consultancyandmobiletelephonesusefarlessoilthansteelorcarproduction.ForeachdollarofGDP(inconstantprices)richeconomiesnowusenearly50%lessoilthanin1973.TheOECDestimatesinitslatestEconomicOutlookthat,ifoilpricesaveraged13in1998,thiswouldincreasetheoilimportbillinricheconomiesbyonly0.25-0.5%ofGDP.Thatislessthanone-quarteroftheincomelossin1974or1980.Ontheotherhand,oil-importingemergingeconomies—towhichheavyindustryhasshifted—havebecomemoreenergy-intensive,andsocouldbemoreseriouslysqueezed.(5)Onemorereasonnottolosesleepovertheriseinoilpricesisthat,unliketherisesinthe1970s,ithasnotoccurredagainstthebackgroundofgeneralcommodity-priceinflationandglobalexcessdemand.Asizableportionoftheworldisonlyjustemergingfromeconomicdecline.TheEconomist'scommoditypriceindexisbroadlyunchangingfromayearago.In1973commoditypricesjumpedby70%,andin1979byalmost30%.35.Fromthetextwecanseethatthewriterseems()
【答案】 A  【考点】 作者态度题。  【分析】 本文作者主要讲的就是这次油价上涨的影响不大。尤其是第三段和最后一段的第一句话,强调人们不必担心此次油价上涨,因为这一次的情况与“20世纪70年代”不同。由此可见作者的态度是“乐观的”。
2.下列微分方程中,是三阶微分方程的是()。
二判断题(每小题2分,共40分)1.无界的数列一定发散
二判断题(每小题2分,共40分)1.收敛的数列一定有界
2.下列函数是偶函数的是
6.极值点一定是驻点。
1.袋中装有3个白球,7个红球,在袋中任取4个球,则其中恰有2个白球的概率为()。
2.若P(A)=0.5,P(A-B)=0.3,则P(B|A)=()。