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第一篇 Almost Human? Scientists are racing to build the world’s first thinking...
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{{*HTML*}}下面的短文后列出了7个句子请根据短文的内容对每个句子做出判断如果该句提供的是正确信息请选择A如果该句提供的是错误信息请选择B如果该句的信息文中没有提及请选择C ?????????? ??????????? {{B}}GreenRoofResearch{{/B}}??Theconceptofgreenroofsis basicallyaboutgrowingplantsonroofsthushelpingtoreplacethegreen footprintthathadbeendestroyedduetotheconstructionofthebuilding.Green roofsarethemostprevalent流行inGermanywhichiswidelyregardedasthe leaderingreenroofresearch.??Thegreenroofsthatareused thesedayscanbeclassifiedas’extensive’and’intensive’systems.Extensive greenroofsusemossesgrassesandherbswhicharetoleranttodroughts.These plantsdonotneedmuchmaintenancecanbegrowninalayerof.substrata土层 thatcanbeasshallowas1.5inchesandgenerallyareinaccessibletothe public.Incontrastawiderangeofspeciesofplantsaregrownonintensive greenroofssuchasshrubs灌木andeventreeswhichrequiredeepersubstrate layersandareusuallygrownonflatroofs.Theyneedintensivemaintenance andare’usuallyareasthatresembleparkswhichareaccessibleto people.??Thereareseveralbenefitsofadoptinggreenroof technologies.Apartfromtheobviouspsychologicalandaesthetic美学的benefits ofgarden-likeenvironmentssurroundingyousomeofthecommoneconomicand ecologicalbenefitsare.-areductionintheconsumptionofenergy;airand waterpurification;recoveringgreenspaces;andthemitigation缓解oftheheat islandeffectinurbanareas.??Thegreenroofresearchthatis currentlyongoingisfocusedonevaluatingthespeciesofplantsthatare suitabletobegrownonroofsthemethodsofpropagation繁殖aswellas establishmentnutrient养料andwaterrequirementsubstratesandthequantity andqualityofwaterrunoff.Theevaluationcriteriaofplantspeciesare:at whatratetheycanbeestablished;theircapacitytowithstandinvasiveweeds; tolerance’ofcoldandheat;toleranceofdroughtconditions;capacityof persistenceandsurvival.??Anumberofexperimentsarebeing conductedonroofplatformsimulationsatvariousresearchcenters.Thesesites aregenerallyoutfittedwithequipmentwhichareusedtomeasuretemperatures atdifferentdepthsofthegrowingsubstratesandtherateandvolumeofthe runoffofstormwatersfromeachoftheplatforms.??Greenroof technologyisrepresentativeofacompletelynewmarketforlandscape contractorsandallroofsthatcurrentlyexistandthefutureonestobe constructedarethepotentialmarket--amarketthatistoohugetobe overlooked.Itisestimatedthataround10percentoftheflatroofsinGermanyaregreen.
{{*HTML*}}下面的短文后列出了7个句子请根据短文的内容对每个句子做出判断如果该句提供的是正确信息请选择A如果该句提供的是错误信息请选择B如果该句的信息文中没有提及请选择C ?????????? ??????????? {{B}}GreenRoofResearch{{/B}}??Theconceptofgreenroofsis basicallyaboutgrowingplantsonroofsthushelpingtoreplacethegreen footprintthathadbeendestroyedduetotheconstructionofthebuilding.Green roofsarethemostprevalent流行inGermanywhichiswidelyregardedasthe leaderingreenroofresearch.??Thegreenroofsthatareused thesedayscanbeclassifiedas’extensive’and’intensive’systems.Extensive greenroofsusemossesgrassesandherbswhicharetoleranttodroughts.These plantsdonotneedmuchmaintenancecanbegrowninalayerof.substrata土层 thatcanbeasshallowas1.5inchesandgenerallyareinaccessibletothe public.Incontrastawiderangeofspeciesofplantsaregrownonintensive greenroofssuchasshrubs灌木andeventreeswhichrequiredeepersubstrate layersandareusuallygrownonflatroofs.Theyneedintensivemaintenance andare’usuallyareasthatresembleparkswhichareaccessibleto people.??Thereareseveralbenefitsofadoptinggreenroof technologies.Apartfromtheobviouspsychologicalandaesthetic美学的benefits ofgarden-likeenvironmentssurroundingyousomeofthecommoneconomicand ecologicalbenefitsare.-areductionintheconsumptionofenergy;airand waterpurification;recoveringgreenspaces;andthemitigation缓解oftheheat islandeffectinurbanareas.??Thegreenroofresearchthatis currentlyongoingisfocusedonevaluatingthespeciesofplantsthatare suitabletobegrownonroofsthemethodsofpropagation繁殖aswellas establishmentnutrient养料andwaterrequirementsubstratesandthequantity andqualityofwaterrunoff.Theevaluationcriteriaofplantspeciesare:at whatratetheycanbeestablished;theircapacitytowithstandinvasiveweeds; tolerance’ofcoldandheat;toleranceofdroughtconditions;capacityof persistenceandsurvival.??Anumberofexperimentsarebeing conductedonroofplatformsimulationsatvariousresearchcenters.Thesesites aregenerallyoutfittedwithequipmentwhichareusedtomeasuretemperatures atdifferentdepthsofthegrowingsubstratesandtherateandvolumeofthe runoffofstormwatersfromeachoftheplatforms.??Greenroof technologyisrepresentativeofacompletelynewmarketforlandscape contractorsandallroofsthatcurrentlyexistandthefutureonestobe constructedarethepotentialmarket--amarketthatistoohugetobe overlooked.Oneofthebenefitsofgreenroofsisthereductionoftheheatislandeffectincities.
{{*HTML*}}下面的短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选择1个最佳标题2第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项 ?????????? ??????{{B}}TheSupercomputerNetwork{{/B}}1 ?Recentlytenlaboratoriesrunbygovernmentsindifferentpartsofthe worldhavebecomelinked.TheirComputershavebeenconnectedsotheycantalk toeachother.Thismaynotseemverydramaticnewsbutitisthebeginningof adevelopmentthatwillincreasethepoweroftheInternettremendously.2 ?TheInternetisaninterconnected互联systemofnetworksthatconnects computersroundtheworldandfacilitatesthetransmissionandexchangeof information.ThewaythatyouusetheInternetisbyaccessingthisnetwork. Thisdependsonthepowerthatyoursystemallowsyoutouse.Thepowerofyour computerisresponsibleforhowfastyoucandownload下载fileshowmuchdata youcanstoreetc.Ifyourcomputerisoldandslowaccessingtheinformation canbeverydifficult.3?Thenewdevelopmentininformationtechnology hasbeencalledthegrid网格持术anditwillbeanetworkofcomputersthat arelinkedtogether.Thegrid’willworkinadifferentwayfromtheInternet enablingyoutogetthepowerofthebiggestcomputersintheworldonyour computer.Accessingtheinformationwillnolongerdependonthepowerofyour computer.Theideaisthatwhileyouaccessinformationyouwillalsohave accesstothepowerofthebiggercomputerstations.4?Oneadvantageof thisrevolutionaryideaisthatgeographicallocationwillbecomeirrelevant. Thegridwilldecidewhicharethebestpartsofaworldwidenetworktodothe jobyouwant.ThismeansthatyoumaybeaccessingacomputerinJapantosolve aprobleminAlaska.5?Thegridcanbecomparedtohavingan efficientpersonalassistant.Youcangiveyourassistantataskandhewill doitforyou.Theassistantwilldothepreliminaryresearchcollectthedata comparethemanddecideonthebestcourseofactionbyaccessinganyofthe computercentresinthegridthathappentohavetherelevantinformation.All youhavetodoisassignthetasksitbackandwait.6Atpresentpossible applicationsofthegridinscientificresearcharebeingexplored.Whileit hastakenaboutfifteenyearsforInternetusetobecomewidespreadexperts believethatthegridcouldbeupandrunningforprivateindividualsfarmore quickly.Scientistsworkingongridprojectsareconvincedthatitwillbeas widelyusedasthewebinthenexttenyears. A.Howdoesthegridwork? B.Powershared C.Justmakearequest D.LimitationsofpresentInternetuse E.Distanceisnotaproblem F.AnewerafortheInternetParagraph3_______
WhatIstheCoolestGasintheUniverse? WhatisthecoldestairtemperatureeverrecordedontheEarth?Wherewasthislowtemperaturerecorded?ThecoldestrecordedtemperatureonEarthwas-91℃which51inAntarcticain1983. Weencounteraninterestingsituationwhenwediscusstemperaturesin52.TemperaturesinEarthorbitactuallyrangefromabout+120℃to-120℃.Thetemperaturedependsupon53youareindirectsunlightorshade.Obviously-120℃iscolderthanourbodycan54endure. Thespacetemperaturesjustdiscussedaffectonlyourarea1ofthesolar55.ObviouslyitishotterclosertotheSunandcolderaswetravel56fromtheSun.ScientistsestimatetemperaturesatPlutoareabout-210℃.Howcoldisthelowestestimatedtemperatureintheentireuniverse?Againitdependsuponyour57.Wearetaughtitissupposedly58tohaveatemperaturebelowabsolutezerowhichis-273℃atwhichatomsdonotmove.TwoscientistswhosenamesareCornellandWiemanhavesuccessfully59downagastoatemperaturebarelyaboveabsolutezero.TheywonaNobelPrizeinPhysicsin2001fortheirwork-notadiscoveryinthiscase. Whyisthetwoscientists’worksoimportanttoscience? Inthe1920sSatyendraNathBosewasstudyinganinteresting60aboutspecial lightparticleswenowcallphotons.Bosehadtrouble61otherscientiststobelievehisheorysohecontactedAlbertE6instein.Einstein’scalculationshelpedhimtheorizethatatoms62behaveasBosethought-butonlyatverycoldtemperatures. Scientistshavealsodiscoveredthatultra-cold超冷atomscanhelpthemmaketheworld’satomicclockseven63accurate.Theseclocksaresoaccuratetodaytheywouldonlyloseonesecond64sixmillionyears!Suchaccuracywillhelpustravelinspacebecausedistanceisvelocitytimestime4d=v×t.With5thelongdistancesinvolvedinspace65weneedtoknowtimeasaccuratelyaspossibletogetaccuratedistance.
{{*HTML*}}{{B}}第二篇{{/B}} ??????? ????????{{B}}Real-World Robots{{/B}}??Whenyouthinkofarobotdoyouimagineashiny metallicdevicehavingthesamegeneralshapeasahumanbeingperforming humanlikefunctionsandrespondingtoyourquestionsinamonotone单调的voice accentuated强调byhigh-pitchedtonesandbeeps?Thisisthewaymanyofus imaginearobotbutintherealworldarobotisnothumanoidatall.Insteada robotoftenisavoicelessbox-shapedmachinethatefficientlycarriesout repetitiveordangerousfunctionsusuallyperformedbyhumans.Today’srobotis morethananautomaticmachinethatperformsonetaskagainandagain.Amodern robotisprogrammedwithvaryingdegreesofartificialintelligencethatisa robotcontainsacomputerprogramthattellsithowtoperformtasksassociated Withhumanintelligencesuchasreasoningdrawingconclusionsandlearning frompastexperience.??Arobotdoesnotpossessahumanshapefor thesimplereasonthatatwo-leggedrobothasgreatdifficultyremaining balanced.Arobotdoeshowevermovefromplacetoplaceonwheelsandaxles 轮轴thatrollandrotate.Arobotevenhaslimbsthatturnroundandmovein combinationwithjointsandmotors.Tofinditswayinitssurroundingsarobot utilizesvariousbuilt-insensors.Antennaeattachedtotherobot’sbasedetect anythingtheybumpinto.Iftherobotstartstoshakeasitmovesonanincline agyroscope陀螺仪insideitsensestheverticaldifferential.Todetermineits distancefromanobjectandhowquicklyitwillreachtheobjecttherobot bouncesbeamsoflaserlightandultrasonicsoundwavesoffobstructions障碍物 initspath.Theseandothersensorsconstantlyfeedinformationtothe computerwhichthenanalyzestheinformationandcorrectsoradjuststhe robot’sactions.Asscienceandtechnologyadvancetherobottoowillprogress initsfunctionsanduseofartificialintelligence programs.Thewriterbeginsthepassagebycomparing
{{*HTML*}}{{B}}第二篇{{/B}} ??????? ????????{{B}}Real-World Robots{{/B}}??Whenyouthinkofarobotdoyouimagineashiny metallicdevicehavingthesamegeneralshapeasahumanbeingperforming humanlikefunctionsandrespondingtoyourquestionsinamonotone单调的voice accentuated强调byhigh-pitchedtonesandbeeps?Thisisthewaymanyofus imaginearobotbutintherealworldarobotisnothumanoidatall.Insteada robotoftenisavoicelessbox-shapedmachinethatefficientlycarriesout repetitiveordangerousfunctionsusuallyperformedbyhumans.Today’srobotis morethananautomaticmachinethatperformsonetaskagainandagain.Amodern robotisprogrammedwithvaryingdegreesofartificialintelligencethatisa robotcontainsacomputerprogramthattellsithowtoperformtasksassociated Withhumanintelligencesuchasreasoningdrawingconclusionsandlearning frompastexperience.??Arobotdoesnotpossessahumanshapefor thesimplereasonthatatwo-leggedrobothasgreatdifficultyremaining balanced.Arobotdoeshowevermovefromplacetoplaceonwheelsandaxles 轮轴thatrollandrotate.Arobotevenhaslimbsthatturnroundandmovein combinationwithjointsandmotors.Tofinditswayinitssurroundingsarobot utilizesvariousbuilt-insensors.Antennaeattachedtotherobot’sbasedetect anythingtheybumpinto.Iftherobotstartstoshakeasitmovesonanincline agyroscope陀螺仪insideitsensestheverticaldifferential.Todetermineits distancefromanobjectandhowquicklyitwillreachtheobjecttherobot bouncesbeamsoflaserlightandultrasonicsoundwavesoffobstructions障碍物 initspath.Theseandothersensorsconstantlyfeedinformationtothe computerwhichthenanalyzestheinformationandcorrectsoradjuststhe robot’sactions.Asscienceandtechnologyadvancetherobottoowillprogress initsfunctionsanduseofartificialintelligence programs.Anothergoodtitleforthispassagewouldbe
{{*HTML*}}下面的短文后列出了7个句子请根据短文的内容对每个句子做出判断如果该句提供的是正确信息请选择A如果该句提供的是错误信息请选择B如果该句的信息文中没有提及请选择C ?????????? ??????????? {{B}}GreenRoofResearch{{/B}}??Theconceptofgreenroofsis basicallyaboutgrowingplantsonroofsthushelpingtoreplacethegreen footprintthathadbeendestroyedduetotheconstructionofthebuilding.Green roofsarethemostprevalent流行inGermanywhichiswidelyregardedasthe leaderingreenroofresearch.??Thegreenroofsthatareused thesedayscanbeclassifiedas’extensive’and’intensive’systems.Extensive greenroofsusemossesgrassesandherbswhicharetoleranttodroughts.These plantsdonotneedmuchmaintenancecanbegrowninalayerof.substrata土层 thatcanbeasshallowas1.5inchesandgenerallyareinaccessibletothe public.Incontrastawiderangeofspeciesofplantsaregrownonintensive greenroofssuchasshrubs灌木andeventreeswhichrequiredeepersubstrate layersandareusuallygrownonflatroofs.Theyneedintensivemaintenance andare’usuallyareasthatresembleparkswhichareaccessibleto people.??Thereareseveralbenefitsofadoptinggreenroof technologies.Apartfromtheobviouspsychologicalandaesthetic美学的benefits ofgarden-likeenvironmentssurroundingyousomeofthecommoneconomicand ecologicalbenefitsare.-areductionintheconsumptionofenergy;airand waterpurification;recoveringgreenspaces;andthemitigation缓解oftheheat islandeffectinurbanareas.??Thegreenroofresearchthatis currentlyongoingisfocusedonevaluatingthespeciesofplantsthatare suitabletobegrownonroofsthemethodsofpropagation繁殖aswellas establishmentnutrient养料andwaterrequirementsubstratesandthequantity andqualityofwaterrunoff.Theevaluationcriteriaofplantspeciesare:at whatratetheycanbeestablished;theircapacitytowithstandinvasiveweeds; tolerance’ofcoldandheat;toleranceofdroughtconditions;capacityof persistenceandsurvival.??Anumberofexperimentsarebeing conductedonroofplatformsimulationsatvariousresearchcenters.Thesesites aregenerallyoutfittedwithequipmentwhichareusedtomeasuretemperatures atdifferentdepthsofthegrowingsubstratesandtherateandvolumeofthe runoffofstormwatersfromeachoftheplatforms.??Greenroof technologyisrepresentativeofacompletelynewmarketforlandscape contractorsandallroofsthatcurrentlyexistandthefutureonestobe constructedarethepotentialmarket--amarketthatistoohugetobe overlooked.Smallplantslikegrassesandherbsaregrownwidelyonintensivegreenroofs.
WhatIstheCoolestGasintheUniverse? WhatisthecoldestairtemperatureeverrecordedontheEarth?Wherewasthislowtemperaturerecorded?ThecoldestrecordedtemperatureonEarthwas-91℃which51inAntarcticain1983. Weencounteraninterestingsituationwhenwediscusstemperaturesin52.TemperaturesinEarthorbitactuallyrangefromabout+120℃to-120℃.Thetemperaturedependsupon53youareindirectsunlightorshade.Obviously-120℃iscolderthanourbodycan54endure. Thespacetemperaturesjustdiscussedaffectonlyourarea1ofthesolar55.ObviouslyitishotterclosertotheSunandcolderaswetravel56fromtheSun.ScientistsestimatetemperaturesatPlutoareabout-210℃.Howcoldisthelowestestimatedtemperatureintheentireuniverse?Againitdependsuponyour57.Wearetaughtitissupposedly58tohaveatemperaturebelowabsolutezerowhichis-273℃atwhichatomsdonotmove.TwoscientistswhosenamesareCornellandWiemanhavesuccessfully59downagastoatemperaturebarelyaboveabsolutezero.TheywonaNobelPrizeinPhysicsin2001fortheirwork-notadiscoveryinthiscase. Whyisthetwoscientists’worksoimportanttoscience? Inthe1920sSatyendraNathBosewasstudyinganinteresting60aboutspecial lightparticleswenowcallphotons.Bosehadtrouble61otherscientiststobelievehisheorysohecontactedAlbertE6instein.Einstein’scalculationshelpedhimtheorizethatatoms62behaveasBosethought-butonlyatverycoldtemperatures. Scientistshavealsodiscoveredthatultra-cold超冷atomscanhelpthemmaketheworld’satomicclockseven63accurate.Theseclocksaresoaccuratetodaytheywouldonlyloseonesecond64sixmillionyears!Suchaccuracywillhelpustravelinspacebecausedistanceisvelocitytimestime4d=v×t.With5thelongdistancesinvolvedinspace65weneedtoknowtimeasaccuratelyaspossibletogetaccuratedistance.
{{*HTML*}}{{B}}第二篇{{/B}} ??????? ????????{{B}}Real-World Robots{{/B}}??Whenyouthinkofarobotdoyouimagineashiny metallicdevicehavingthesamegeneralshapeasahumanbeingperforming humanlikefunctionsandrespondingtoyourquestionsinamonotone单调的voice accentuated强调byhigh-pitchedtonesandbeeps?Thisisthewaymanyofus imaginearobotbutintherealworldarobotisnothumanoidatall.Insteada robotoftenisavoicelessbox-shapedmachinethatefficientlycarriesout repetitiveordangerousfunctionsusuallyperformedbyhumans.Today’srobotis morethananautomaticmachinethatperformsonetaskagainandagain.Amodern robotisprogrammedwithvaryingdegreesofartificialintelligencethatisa robotcontainsacomputerprogramthattellsithowtoperformtasksassociated Withhumanintelligencesuchasreasoningdrawingconclusionsandlearning frompastexperience.??Arobotdoesnotpossessahumanshapefor thesimplereasonthatatwo-leggedrobothasgreatdifficultyremaining balanced.Arobotdoeshowevermovefromplacetoplaceonwheelsandaxles 轮轴thatrollandrotate.Arobotevenhaslimbsthatturnroundandmovein combinationwithjointsandmotors.Tofinditswayinitssurroundingsarobot utilizesvariousbuilt-insensors.Antennaeattachedtotherobot’sbasedetect anythingtheybumpinto.Iftherobotstartstoshakeasitmovesonanincline agyroscope陀螺仪insideitsensestheverticaldifferential.Todetermineits distancefromanobjectandhowquicklyitwillreachtheobjecttherobot bouncesbeamsoflaserlightandultrasonicsoundwavesoffobstructions障碍物 initspath.Theseandothersensorsconstantlyfeedinformationtothe computerwhichthenanalyzestheinformationandcorrectsoradjuststhe robot’sactions.Asscienceandtechnologyadvancetherobottoowillprogress initsfunctionsanduseofartificialintelligence programs.Accordingtothefirstparagraphartificialintelligenceis
WhatIstheCoolestGasintheUniverse? WhatisthecoldestairtemperatureeverrecordedontheEarth?Wherewasthislowtemperaturerecorded?ThecoldestrecordedtemperatureonEarthwas-91℃which51inAntarcticain1983. Weencounteraninterestingsituationwhenwediscusstemperaturesin52.TemperaturesinEarthorbitactuallyrangefromabout+120℃to-120℃.Thetemperaturedependsupon53youareindirectsunlightorshade.Obviously-120℃iscolderthanourbodycan54endure. Thespacetemperaturesjustdiscussedaffectonlyourarea1ofthesolar55.ObviouslyitishotterclosertotheSunandcolderaswetravel56fromtheSun.ScientistsestimatetemperaturesatPlutoareabout-210℃.Howcoldisthelowestestimatedtemperatureintheentireuniverse?Againitdependsuponyour57.Wearetaughtitissupposedly58tohaveatemperaturebelowabsolutezerowhichis-273℃atwhichatomsdonotmove.TwoscientistswhosenamesareCornellandWiemanhavesuccessfully59downagastoatemperaturebarelyaboveabsolutezero.TheywonaNobelPrizeinPhysicsin2001fortheirwork-notadiscoveryinthiscase. Whyisthetwoscientists’worksoimportanttoscience? Inthe1920sSatyendraNathBosewasstudyinganinteresting60aboutspecial lightparticleswenowcallphotons.Bosehadtrouble61otherscientiststobelievehisheorysohecontactedAlbertE6instein.Einstein’scalculationshelpedhimtheorizethatatoms62behaveasBosethought-butonlyatverycoldtemperatures. Scientistshavealsodiscoveredthatultra-cold超冷atomscanhelpthemmaketheworld’satomicclockseven63accurate.Theseclocksaresoaccuratetodaytheywouldonlyloseonesecond64sixmillionyears!Suchaccuracywillhelpustravelinspacebecausedistanceisvelocitytimestime4d=v×t.With5thelongdistancesinvolvedinspace65weneedtoknowtimeasaccuratelyaspossibletogetaccuratedistance.
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WhatIstheCoolestGasintheUniverse? WhatisthecoldestairtemperatureeverrecordedontheEarth?Wherewasthislowtemperaturerecorded?ThecoldestrecordedtemperatureonEarthwas-91℃which51inAntarcticain1983. Weencounteraninterestingsituationwhenwediscusstemperaturesin52.TemperaturesinEarthorbitactuallyrangefromabout+120℃to-120℃.Thetemperaturedependsupon53youareindirectsunlightorshade.Obviously-120℃iscolderthanourbodycan54endure. Thespacetemperaturesjustdiscussedaffectonlyourarea1ofthesolar55.ObviouslyitishotterclosertotheSunandcolderaswetravel56fromtheSun.ScientistsestimatetemperaturesatPlutoareabout-210℃.Howcoldisthelowestestimatedtemperatureintheentireuniverse?Againitdependsuponyour57.Wearetaughtitissupposedly58tohaveatemperaturebelowabsolutezerowhichis-273℃atwhichatomsdonotmove.TwoscientistswhosenamesareCornellandWiemanhavesuccessfully59downagastoatemperaturebarelyaboveabsolutezero.TheywonaNobelPrizeinPhysicsin2001fortheirwork-notadiscoveryinthiscase. Whyisthetwoscientists’worksoimportanttoscience? Inthe1920sSatyendraNathBosewasstudyinganinteresting60aboutspecial lightparticleswenowcallphotons.Bosehadtrouble61otherscientiststobelievehisheorysohecontactedAlbertE6instein.Einstein’scalculationshelpedhimtheorizethatatoms62behaveasBosethought-butonlyatverycoldtemperatures. Scientistshavealsodiscoveredthatultra-cold超冷atomscanhelpthemmaketheworld’satomicclockseven63accurate.Theseclocksaresoaccuratetodaytheywouldonlyloseonesecond64sixmillionyears!Suchaccuracywillhelpustravelinspacebecausedistanceisvelocitytimestime4d=v×t.With5thelongdistancesinvolvedinspace65weneedtoknowtimeasaccuratelyaspossibletogetaccuratedistance.
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{{*HTML*}}下面有3篇短文每篇短文后有5道题请根据短文内容为每题确定1个最佳选项{{B}}第一篇{{/B}} ??????? CentersoftheGreatEuropeanCities??Thecentersofthegreat citiesofEuropearemeetingplacesbytradition.Peoplegathertheretodrink coffeeandchatlateintothenight.Amixtureoflocalsandtouristsmakefor anexcitingmetropolitanatmosphere.??Squaresplazas广场and arcades拱廊formtheheartofEurope’scities.??VeniceinItaly hasthePiazzaSanMarco-abeautifulsquaresurroundedbyshopschurches restaurantsandcafes.InBarcelonaSpainLaBosqueriaisalivelymarketwith hundredsofstallssellingallkindsofgoods.London’sCoventGardenisfilled withfruitandvegetablestallsbydayandmusiciansacrobats杂质演员and artistsbynight.Thegovernmentbuildingsatthecenterofmanycitiesoften arearchitecturallyimpressive.InLondontheyserveasabeautifulbackdrop 背景tothecoffeetablesthatlinethestreetsandthebanksofthe Thames.??Thesevibrant有活力的heartsaretheproductofcenturies ofevolutionsocialhistorianJoelGarreautoldUSNewsandWorldReport recently.ThereasonpeoplethinkVeniceissogreattodayisyoudon’tseeall themistakessaidGarreau.Thosehaveallbeenremoved.MostEuropeancities werelaidoutbeforetheinventionofthecarsobarsrestaurantsandcafes wereneartopeople’shomes.TodaythefocusofmanyEuropeans’lifehasmoved awayfromthecenters.Theyliveinthesuburbsandoutskirtsdrivingto supermarketstogettheirsupplies.Butonacontinentwherepeopletreasure conventiontherearestillthosewhoholdontotraditionalwayslivingand shoppinglocally.Thesepeopletogetherwithtouristsprovidethecitycenters withtheirreasonforexistence.??Coffeecultureplaysapartin keepingthesecitycentersflourishing.ThisisparticularlytrueofPadswhose citizensarefamousenthusiasticconversationalists.Thisskillisdeveloped overmanyhoursspentchattingoverespressos浓咖啡andcigarettes.? ?Religionalsoplaysaroleindevelopingsociableatmosphere.Peoplein RomanCatholiccountriesusedtovisittheChurchonanalmostdailybasis. Entirecommunitieswouldgatherinthesamebuildingandthenmoveouttothe marketscafesandbarsinthesurroundingstreets.Anenormousexampleofthis relationshipbetweenchurchandsocietyistheDuomo.Thehugemarblecathedral inFlorenceItalyissurroundedbybakeriesandcoffeeshopsandcatersnot onlytothetouristcrowdsbutalsothelocal community.WhatareParisiansfamousfor?
{{*HTML*}}下面的短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选择1个最佳标题2第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项 ?????????? ??????{{B}}TheSupercomputerNetwork{{/B}}1 ?Recentlytenlaboratoriesrunbygovernmentsindifferentpartsofthe worldhavebecomelinked.TheirComputershavebeenconnectedsotheycantalk toeachother.Thismaynotseemverydramaticnewsbutitisthebeginningof adevelopmentthatwillincreasethepoweroftheInternettremendously.2 ?TheInternetisaninterconnected互联systemofnetworksthatconnects computersroundtheworldandfacilitatesthetransmissionandexchangeof information.ThewaythatyouusetheInternetisbyaccessingthisnetwork. Thisdependsonthepowerthatyoursystemallowsyoutouse.Thepowerofyour computerisresponsibleforhowfastyoucandownload下载fileshowmuchdata youcanstoreetc.Ifyourcomputerisoldandslowaccessingtheinformation canbeverydifficult.3?Thenewdevelopmentininformationtechnology hasbeencalledthegrid网格持术anditwillbeanetworkofcomputersthat arelinkedtogether.Thegrid’willworkinadifferentwayfromtheInternet enablingyoutogetthepowerofthebiggestcomputersintheworldonyour computer.Accessingtheinformationwillnolongerdependonthepowerofyour computer.Theideaisthatwhileyouaccessinformationyouwillalsohave accesstothepowerofthebiggercomputerstations.4?Oneadvantageof thisrevolutionaryideaisthatgeographicallocationwillbecomeirrelevant. Thegridwilldecidewhicharethebestpartsofaworldwidenetworktodothe jobyouwant.ThismeansthatyoumaybeaccessingacomputerinJapantosolve aprobleminAlaska.5?Thegridcanbecomparedtohavingan efficientpersonalassistant.Youcangiveyourassistantataskandhewill doitforyou.Theassistantwilldothepreliminaryresearchcollectthedata comparethemanddecideonthebestcourseofactionbyaccessinganyofthe computercentresinthegridthathappentohavetherelevantinformation.All youhavetodoisassignthetasksitbackandwait.6Atpresentpossible applicationsofthegridinscientificresearcharebeingexplored.Whileit hastakenaboutfifteenyearsforInternetusetobecomewidespreadexperts believethatthegridcouldbeupandrunningforprivateindividualsfarmore quickly.Scientistsworkingongridprojectsareconvincedthatitwillbeas widelyusedasthewebinthenexttenyears. A.Howdoesthegridwork? B.Powershared C.Justmakearequest D.LimitationsofpresentInternetuse E.Distanceisnotaproblem F.AnewerafortheInternetParagraph5_______
WhatIstheCoolestGasintheUniverse? WhatisthecoldestairtemperatureeverrecordedontheEarth?Wherewasthislowtemperaturerecorded?ThecoldestrecordedtemperatureonEarthwas-91℃which51inAntarcticain1983. Weencounteraninterestingsituationwhenwediscusstemperaturesin52.TemperaturesinEarthorbitactuallyrangefromabout+120℃to-120℃.Thetemperaturedependsupon53youareindirectsunlightorshade.Obviously-120℃iscolderthanourbodycan54endure. Thespacetemperaturesjustdiscussedaffectonlyourarea1ofthesolar55.ObviouslyitishotterclosertotheSunandcolderaswetravel56fromtheSun.ScientistsestimatetemperaturesatPlutoareabout-210℃.Howcoldisthelowestestimatedtemperatureintheentireuniverse?Againitdependsuponyour57.Wearetaughtitissupposedly58tohaveatemperaturebelowabsolutezerowhichis-273℃atwhichatomsdonotmove.TwoscientistswhosenamesareCornellandWiemanhavesuccessfully59downagastoatemperaturebarelyaboveabsolutezero.TheywonaNobelPrizeinPhysicsin2001fortheirwork-notadiscoveryinthiscase. Whyisthetwoscientists’worksoimportanttoscience? Inthe1920sSatyendraNathBosewasstudyinganinteresting60aboutspecial lightparticleswenowcallphotons.Bosehadtrouble61otherscientiststobelievehisheorysohecontactedAlbertE6instein.Einstein’scalculationshelpedhimtheorizethatatoms62behaveasBosethought-butonlyatverycoldtemperatures. Scientistshavealsodiscoveredthatultra-cold超冷atomscanhelpthemmaketheworld’satomicclockseven63accurate.Theseclocksaresoaccuratetodaytheywouldonlyloseonesecond64sixmillionyears!Suchaccuracywillhelpustravelinspacebecausedistanceisvelocitytimestime4d=v×t.With5thelongdistancesinvolvedinspace65weneedtoknowtimeasaccuratelyaspossibletogetaccuratedistance.
第三篇WeavingwithLight IntheSierraMadremountainrangeofwestcentralMexicothenativeHuicholpeoplelivemuchthewaytheirancestorsdid—withoutelectricity.That’sbecauseit’stooexpensivetostringpowerlinestotheremotemountainareaswheretheylive.TohelpsupportthemselvestheHuicholcreatebeautifulartwork.Theyselltheirartincitieshundredsofmilesawayfromtheirvillages.Andwithoutelectricity—athomeorontheroadtheycanonlyworkduringdaylighthours.Whenitgetsdarktheymuststopwhateverthey’redoing. NowateamofscientistsdesignersandarchitectsisusingnewtechnologiestoprovidetheHuicholwithlightafterthesunsets.Thescientists’techniqueinvolvesweavingtinyelectroniccrystalsintofabricsthatcanbemadeintoclothesbagsorotheritems. Bycollectingthesun’senergyduringthedaytheselightweightfabricsprovidebrightwhitelightatnight.TheirinventorshavenamedthefabricsPortableLights.PortableLightshavethepotentialtotransformthelivesofpeoplewithoutelectricityaroundtheworldsaysprojectleaderSheilaKennedy. OurinventionKennedysayscamefromseeinghowwecouldtransformtechnologywesaweverydayintheUnitedStatesandmoveitintonewmarketsforpeoplewhodidn’thavealotofmoney. AtthecoreofPortableLighttechnologyaredevicescalledhigh-brightnesslight-emittingdiodesorHBLEDs.Thesetinylightsappearindigitalclockstelevisionsandstreetlights. LEDsarecompletelydifferentfromthelightbulbs.Mostofthoseglassbulbsbelongtoatypecalledincandescentlights.Insideelectricityheatsametalcoiltoabout2200degreesCelsius.Atthattemperaturebulbsgiveofflightwecansee. Ninetypercentofenergyproducedbyincandescentlightshoweverisheat-and invisible.Withallthatwastedenergybulbsburnoutquickly.Theyarealsoeasilybroken. LEDsontheotherhandareliketinypiecesofrockmadeupofmoleculesthatarearrangedinacrystalstructure.WhenanelectriccurrentpassesthroughanLEDthecrystalstructureproduceslight.Unlikeincandescentbulbstheycanproducelightofvariouscolors.WithinanLEDthetypeofmoleculesandtheirparticulararrangementdetermineswhatcolorisproduced.TomakealivingtheHuicholcreateartworkand
Thescientistsbeganto{{U}}accumulate{{/U}}data.
WhatIstheCoolestGasintheUniverse? WhatisthecoldestairtemperatureeverrecordedontheEarth?Wherewasthislowtemperaturerecorded?ThecoldestrecordedtemperatureonEarthwas-91℃which51inAntarcticain1983. Weencounteraninterestingsituationwhenwediscusstemperaturesin52.TemperaturesinEarthorbitactuallyrangefromabout+120℃to-120℃.Thetemperaturedependsupon53youareindirectsunlightorshade.Obviously-120℃iscolderthanourbodycan54endure. Thespacetemperaturesjustdiscussedaffectonlyourarea1ofthesolar55.ObviouslyitishotterclosertotheSunandcolderaswetravel56fromtheSun.ScientistsestimatetemperaturesatPlutoareabout-210℃.Howcoldisthelowestestimatedtemperatureintheentireuniverse?Againitdependsuponyour57.Wearetaughtitissupposedly58tohaveatemperaturebelowabsolutezerowhichis-273℃atwhichatomsdonotmove.TwoscientistswhosenamesareCornellandWiemanhavesuccessfully59downagastoatemperaturebarelyaboveabsolutezero.TheywonaNobelPrizeinPhysicsin2001fortheirwork-notadiscoveryinthiscase. Whyisthetwoscientists’worksoimportanttoscience? Inthe1920sSatyendraNathBosewasstudyinganinteresting60aboutspecial lightparticleswenowcallphotons.Bosehadtrouble61otherscientiststobelievehisheorysohecontactedAlbertE6instein.Einstein’scalculationshelpedhimtheorizethatatoms62behaveasBosethought-butonlyatverycoldtemperatures. Scientistshavealsodiscoveredthatultra-cold超冷atomscanhelpthemmaketheworld’satomicclockseven63accurate.Theseclocksaresoaccuratetodaytheywouldonlyloseonesecond64sixmillionyears!Suchaccuracywillhelpustravelinspacebecausedistanceisvelocitytimestime4d=v×t.With5thelongdistancesinvolvedinspace65weneedtoknowtimeasaccuratelyaspossibletogetaccuratedistance.
WhatIstheCoolestGasintheUniverse? WhatisthecoldestairtemperatureeverrecordedontheEarth?Wherewasthislowtemperaturerecorded?ThecoldestrecordedtemperatureonEarthwas-91℃which51inAntarcticain1983. Weencounteraninterestingsituationwhenwediscusstemperaturesin52.TemperaturesinEarthorbitactuallyrangefromabout+120℃to-120℃.Thetemperaturedependsupon53youareindirectsunlightorshade.Obviously-120℃iscolderthanourbodycan54endure. Thespacetemperaturesjustdiscussedaffectonlyourarea1ofthesolar55.ObviouslyitishotterclosertotheSunandcolderaswetravel56fromtheSun.ScientistsestimatetemperaturesatPlutoareabout-210℃.Howcoldisthelowestestimatedtemperatureintheentireuniverse?Againitdependsuponyour57.Wearetaughtitissupposedly58tohaveatemperaturebelowabsolutezerowhichis-273℃atwhichatomsdonotmove.TwoscientistswhosenamesareCornellandWiemanhavesuccessfully59downagastoatemperaturebarelyaboveabsolutezero.TheywonaNobelPrizeinPhysicsin2001fortheirwork-notadiscoveryinthiscase. Whyisthetwoscientists’worksoimportanttoscience? Inthe1920sSatyendraNathBosewasstudyinganinteresting60aboutspecial lightparticleswenowcallphotons.Bosehadtrouble61otherscientiststobelievehisheorysohecontactedAlbertE6instein.Einstein’scalculationshelpedhimtheorizethatatoms62behaveasBosethought-butonlyatverycoldtemperatures. Scientistshavealsodiscoveredthatultra-cold超冷atomscanhelpthemmaketheworld’satomicclockseven63accurate.Theseclocksaresoaccuratetodaytheywouldonlyloseonesecond64sixmillionyears!Suchaccuracywillhelpustravelinspacebecausedistanceisvelocitytimestime4d=v×t.With5thelongdistancesinvolvedinspace65weneedtoknowtimeasaccuratelyaspossibletogetaccuratedistance.
{{*HTML*}}下面有3篇短文每篇短文后有5道题请根据短文内容为每题确定1个最佳选项{{B}}第一篇{{/B}} ??????? CentersoftheGreatEuropeanCities??Thecentersofthegreat citiesofEuropearemeetingplacesbytradition.Peoplegathertheretodrink coffeeandchatlateintothenight.Amixtureoflocalsandtouristsmakefor anexcitingmetropolitanatmosphere.??Squaresplazas广场and arcades拱廊formtheheartofEurope’scities.??VeniceinItaly hasthePiazzaSanMarco-abeautifulsquaresurroundedbyshopschurches restaurantsandcafes.InBarcelonaSpainLaBosqueriaisalivelymarketwith hundredsofstallssellingallkindsofgoods.London’sCoventGardenisfilled withfruitandvegetablestallsbydayandmusiciansacrobats杂质演员and artistsbynight.Thegovernmentbuildingsatthecenterofmanycitiesoften arearchitecturallyimpressive.InLondontheyserveasabeautifulbackdrop 背景tothecoffeetablesthatlinethestreetsandthebanksofthe Thames.??Thesevibrant有活力的heartsaretheproductofcenturies ofevolutionsocialhistorianJoelGarreautoldUSNewsandWorldReport recently.ThereasonpeoplethinkVeniceissogreattodayisyoudon’tseeall themistakessaidGarreau.Thosehaveallbeenremoved.MostEuropeancities werelaidoutbeforetheinventionofthecarsobarsrestaurantsandcafes wereneartopeople’shomes.TodaythefocusofmanyEuropeans’lifehasmoved awayfromthecenters.Theyliveinthesuburbsandoutskirtsdrivingto supermarketstogettheirsupplies.Butonacontinentwherepeopletreasure conventiontherearestillthosewhoholdontotraditionalwayslivingand shoppinglocally.Thesepeopletogetherwithtouristsprovidethecitycenters withtheirreasonforexistence.??Coffeecultureplaysapartin keepingthesecitycentersflourishing.ThisisparticularlytrueofPadswhose citizensarefamousenthusiasticconversationalists.Thisskillisdeveloped overmanyhoursspentchattingoverespressos浓咖啡andcigarettes.? ?Religionalsoplaysaroleindevelopingsociableatmosphere.Peoplein RomanCatholiccountriesusedtovisittheChurchonanalmostdailybasis. Entirecommunitieswouldgatherinthesamebuildingandthenmoveouttothe marketscafesandbarsinthesurroundingstreets.Anenormousexampleofthis relationshipbetweenchurchandsocietyistheDuomo.Thehugemarblecathedral inFlorenceItalyissurroundedbybakeriesandcoffeeshopsandcatersnot onlytothetouristcrowdsbutalsothelocal community.WhichstatementisNOTtrueofCoventGarden?
ItseemsthatonlyMaryis{{U}}eligible{{/U}}forthejob.
{{*HTML*}}下面的短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选择1个最佳标题2第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项 ?????????? ??????{{B}}TheSupercomputerNetwork{{/B}}1 ?Recentlytenlaboratoriesrunbygovernmentsindifferentpartsofthe worldhavebecomelinked.TheirComputershavebeenconnectedsotheycantalk toeachother.Thismaynotseemverydramaticnewsbutitisthebeginningof adevelopmentthatwillincreasethepoweroftheInternettremendously.2 ?TheInternetisaninterconnected互联systemofnetworksthatconnects computersroundtheworldandfacilitatesthetransmissionandexchangeof information.ThewaythatyouusetheInternetisbyaccessingthisnetwork. Thisdependsonthepowerthatyoursystemallowsyoutouse.Thepowerofyour computerisresponsibleforhowfastyoucandownload下载fileshowmuchdata youcanstoreetc.Ifyourcomputerisoldandslowaccessingtheinformation canbeverydifficult.3?Thenewdevelopmentininformationtechnology hasbeencalledthegrid网格持术anditwillbeanetworkofcomputersthat arelinkedtogether.Thegrid’willworkinadifferentwayfromtheInternet enablingyoutogetthepowerofthebiggestcomputersintheworldonyour computer.Accessingtheinformationwillnolongerdependonthepowerofyour computer.Theideaisthatwhileyouaccessinformationyouwillalsohave accesstothepowerofthebiggercomputerstations.4?Oneadvantageof thisrevolutionaryideaisthatgeographicallocationwillbecomeirrelevant. Thegridwilldecidewhicharethebestpartsofaworldwidenetworktodothe jobyouwant.ThismeansthatyoumaybeaccessingacomputerinJapantosolve aprobleminAlaska.5?Thegridcanbecomparedtohavingan efficientpersonalassistant.Youcangiveyourassistantataskandhewill doitforyou.Theassistantwilldothepreliminaryresearchcollectthedata comparethemanddecideonthebestcourseofactionbyaccessinganyofthe computercentresinthegridthathappentohavetherelevantinformation.All youhavetodoisassignthetasksitbackandwait.6Atpresentpossible applicationsofthegridinscientificresearcharebeingexplored.Whileit hastakenaboutfifteenyearsforInternetusetobecomewidespreadexperts believethatthegridcouldbeupandrunningforprivateindividualsfarmore quickly.Scientistsworkingongridprojectsareconvincedthatitwillbeas widelyusedasthewebinthenexttenyears. A.Howdoesthegridwork? B.Powershared C.Justmakearequest D.LimitationsofpresentInternetuse E.Distanceisnotaproblem F.AnewerafortheInternetItisbelievedthatthewidespreaduseofthegridwillbecomepossibleinthenext______.
Onetheory{{U}}postulates{{/U}}thattheancientFilipinoscamefromIndiaandPersia.
第三篇WeavingwithLight IntheSierraMadremountainrangeofwestcentralMexicothenativeHuicholpeoplelivemuchthewaytheirancestorsdid—withoutelectricity.That’sbecauseit’stooexpensivetostringpowerlinestotheremotemountainareaswheretheylive.TohelpsupportthemselvestheHuicholcreatebeautifulartwork.Theyselltheirartincitieshundredsofmilesawayfromtheirvillages.Andwithoutelectricity—athomeorontheroadtheycanonlyworkduringdaylighthours.Whenitgetsdarktheymuststopwhateverthey’redoing. NowateamofscientistsdesignersandarchitectsisusingnewtechnologiestoprovidetheHuicholwithlightafterthesunsets.Thescientists’techniqueinvolvesweavingtinyelectroniccrystalsintofabricsthatcanbemadeintoclothesbagsorotheritems. Bycollectingthesun’senergyduringthedaytheselightweightfabricsprovidebrightwhitelightatnight.TheirinventorshavenamedthefabricsPortableLights.PortableLightshavethepotentialtotransformthelivesofpeoplewithoutelectricityaroundtheworldsaysprojectleaderSheilaKennedy. OurinventionKennedysayscamefromseeinghowwecouldtransformtechnologywesaweverydayintheUnitedStatesandmoveitintonewmarketsforpeoplewhodidn’thavealotofmoney. AtthecoreofPortableLighttechnologyaredevicescalledhigh-brightnesslight-emittingdiodesorHBLEDs.Thesetinylightsappearindigitalclockstelevisionsandstreetlights. LEDsarecompletelydifferentfromthelightbulbs.Mostofthoseglassbulbsbelongtoatypecalledincandescentlights.Insideelectricityheatsametalcoiltoabout2200degreesCelsius.Atthattemperaturebulbsgiveofflightwecansee. Ninetypercentofenergyproducedbyincandescentlightshoweverisheat-and invisible.Withallthatwastedenergybulbsburnoutquickly.Theyarealsoeasilybroken. LEDsontheotherhandareliketinypiecesofrockmadeupofmoleculesthatarearrangedinacrystalstructure.WhenanelectriccurrentpassesthroughanLEDthecrystalstructureproduceslight.Unlikeincandescentbulbstheycanproducelightofvariouscolors.WithinanLEDthetypeofmoleculesandtheirparticulararrangementdetermineswhatcolorisproduced.AllofthefollowingaredisadvantagesofincandescentlightsEXCEPTthat
{{*HTML*}}下面的短文后列出了7个句子请根据短文的内容对每个句子做出判断如果该句提供的是正确信息请选择A如果该句提供的是错误信息请选择B如果该句的信息文中没有提及请选择C ?????????? ??????????? {{B}}GreenRoofResearch{{/B}}??Theconceptofgreenroofsis basicallyaboutgrowingplantsonroofsthushelpingtoreplacethegreen footprintthathadbeendestroyedduetotheconstructionofthebuilding.Green roofsarethemostprevalent流行inGermanywhichiswidelyregardedasthe leaderingreenroofresearch.??Thegreenroofsthatareused thesedayscanbeclassifiedas’extensive’and’intensive’systems.Extensive greenroofsusemossesgrassesandherbswhicharetoleranttodroughts.These plantsdonotneedmuchmaintenancecanbegrowninalayerof.substrata土层 thatcanbeasshallowas1.5inchesandgenerallyareinaccessibletothe public.Incontrastawiderangeofspeciesofplantsaregrownonintensive greenroofssuchasshrubs灌木andeventreeswhichrequiredeepersubstrate layersandareusuallygrownonflatroofs.Theyneedintensivemaintenance andare’usuallyareasthatresembleparkswhichareaccessibleto people.??Thereareseveralbenefitsofadoptinggreenroof technologies.Apartfromtheobviouspsychologicalandaesthetic美学的benefits ofgarden-likeenvironmentssurroundingyousomeofthecommoneconomicand ecologicalbenefitsare.-areductionintheconsumptionofenergy;airand waterpurification;recoveringgreenspaces;andthemitigation缓解oftheheat islandeffectinurbanareas.??Thegreenroofresearchthatis currentlyongoingisfocusedonevaluatingthespeciesofplantsthatare suitabletobegrownonroofsthemethodsofpropagation繁殖aswellas establishmentnutrient养料andwaterrequirementsubstratesandthequantity andqualityofwaterrunoff.Theevaluationcriteriaofplantspeciesare:at whatratetheycanbeestablished;theircapacitytowithstandinvasiveweeds; tolerance’ofcoldandheat;toleranceofdroughtconditions;capacityof persistenceandsurvival.??Anumberofexperimentsarebeing conductedonroofplatformsimulationsatvariousresearchcenters.Thesesites aregenerallyoutfittedwithequipmentwhichareusedtomeasuretemperatures atdifferentdepthsofthegrowingsubstratesandtherateandvolumeofthe runoffofstormwatersfromeachoftheplatforms.??Greenroof technologyisrepresentativeofacompletelynewmarketforlandscape contractorsandallroofsthatcurrentlyexistandthefutureonestobe constructedarethepotentialmarket--amarketthatistoohugetobe overlooked.Althoughgreenrooftechnologycancreateagarden-likeenvironmentitspotentialmarketisrathersmall.
WhatIstheCoolestGasintheUniverse? WhatisthecoldestairtemperatureeverrecordedontheEarth?Wherewasthislowtemperaturerecorded?ThecoldestrecordedtemperatureonEarthwas-91℃which51inAntarcticain1983. Weencounteraninterestingsituationwhenwediscusstemperaturesin52.TemperaturesinEarthorbitactuallyrangefromabout+120℃to-120℃.Thetemperaturedependsupon53youareindirectsunlightorshade.Obviously-120℃iscolderthanourbodycan54endure. Thespacetemperaturesjustdiscussedaffectonlyourarea1ofthesolar55.ObviouslyitishotterclosertotheSunandcolderaswetravel56fromtheSun.ScientistsestimatetemperaturesatPlutoareabout-210℃.Howcoldisthelowestestimatedtemperatureintheentireuniverse?Againitdependsuponyour57.Wearetaughtitissupposedly58tohaveatemperaturebelowabsolutezerowhichis-273℃atwhichatomsdonotmove.TwoscientistswhosenamesareCornellandWiemanhavesuccessfully59downagastoatemperaturebarelyaboveabsolutezero.TheywonaNobelPrizeinPhysicsin2001fortheirwork-notadiscoveryinthiscase. Whyisthetwoscientists’worksoimportanttoscience? Inthe1920sSatyendraNathBosewasstudyinganinteresting60aboutspecial lightparticleswenowcallphotons.Bosehadtrouble61otherscientiststobelievehisheorysohecontactedAlbertE6instein.Einstein’scalculationshelpedhimtheorizethatatoms62behaveasBosethought-butonlyatverycoldtemperatures. Scientistshavealsodiscoveredthatultra-cold超冷atomscanhelpthemmaketheworld’satomicclockseven63accurate.Theseclocksaresoaccuratetodaytheywouldonlyloseonesecond64sixmillionyears!Suchaccuracywillhelpustravelinspacebecausedistanceisvelocitytimestime4d=v×t.With5thelongdistancesinvolvedinspace65weneedtoknowtimeasaccuratelyaspossibletogetaccuratedistance.
{{*HTML*}}下面的短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选择1个最佳标题2第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项 ?????????? ??????{{B}}TheSupercomputerNetwork{{/B}}1 ?Recentlytenlaboratoriesrunbygovernmentsindifferentpartsofthe worldhavebecomelinked.TheirComputershavebeenconnectedsotheycantalk toeachother.Thismaynotseemverydramaticnewsbutitisthebeginningof adevelopmentthatwillincreasethepoweroftheInternettremendously.2 ?TheInternetisaninterconnected互联systemofnetworksthatconnects computersroundtheworldandfacilitatesthetransmissionandexchangeof information.ThewaythatyouusetheInternetisbyaccessingthisnetwork. Thisdependsonthepowerthatyoursystemallowsyoutouse.Thepowerofyour computerisresponsibleforhowfastyoucandownload下载fileshowmuchdata youcanstoreetc.Ifyourcomputerisoldandslowaccessingtheinformation canbeverydifficult.3?Thenewdevelopmentininformationtechnology hasbeencalledthegrid网格持术anditwillbeanetworkofcomputersthat arelinkedtogether.Thegrid’willworkinadifferentwayfromtheInternet enablingyoutogetthepowerofthebiggestcomputersintheworldonyour computer.Accessingtheinformationwillnolongerdependonthepowerofyour computer.Theideaisthatwhileyouaccessinformationyouwillalsohave accesstothepowerofthebiggercomputerstations.4?Oneadvantageof thisrevolutionaryideaisthatgeographicallocationwillbecomeirrelevant. Thegridwilldecidewhicharethebestpartsofaworldwidenetworktodothe jobyouwant.ThismeansthatyoumaybeaccessingacomputerinJapantosolve aprobleminAlaska.5?Thegridcanbecomparedtohavingan efficientpersonalassistant.Youcangiveyourassistantataskandhewill doitforyou.Theassistantwilldothepreliminaryresearchcollectthedata comparethemanddecideonthebestcourseofactionbyaccessinganyofthe computercentresinthegridthathappentohavetherelevantinformation.All youhavetodoisassignthetasksitbackandwait.6Atpresentpossible applicationsofthegridinscientificresearcharebeingexplored.Whileit hastakenaboutfifteenyearsforInternetusetobecomewidespreadexperts believethatthegridcouldbeupandrunningforprivateindividualsfarmore quickly.Scientistsworkingongridprojectsareconvincedthatitwillbeas widelyusedasthewebinthenexttenyears. A.Howdoesthegridwork? B.Powershared C.Justmakearequest D.LimitationsofpresentInternetuse E.Distanceisnotaproblem F.AnewerafortheInternetThegridwillenableyoutogetonyourcomputerthepowerof____inthewodd.
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