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阅读下面这篇短文，短文后列出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；如果该句的信息文章中没有提及，请选择C。 ...
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{{*HTML*}}下面有3篇短文每篇短文后有5道题每道题后面有4个选项请根据文章的内容从每题所给的4个选项中选择1个最佳答案{{B}}第一篇{{/B}} ??{{B}} TechnologyTransferinGermany{{/B}}??Whenit comestotranslatingbasicresearchintoindustrialsuccessfewnationscan matchGermany.Sincethe1940sthenation’svastindustrialbasehasbeenfed withaconstantstreamofnewideasandexpertisefromscience.Andthough Germanprosperity繁荣hasfaltered衰退overthepastdecadebecauseofthe hugecostofunifyingeastandwestaswellastheglobaleconomicdeclineit stillhasanenviable令人羡慕的recordforturningideasintoprofit.? ?MuchofthereasonforthatsuccessistheFraunhoferSocietyanetwork ofresearchinstitutesthatexistssolelytosolveindustrialproblemsand createsought-aftertechnologies.ButtodaytheFraunhoferinstituteshave competition.Universitiesaretakinganeverlargerroleintechnologytransfer andtechnologyparksarespringingupallover.Theseeffortsarebeing complementedbythefederalprogrammesforpumpingmoneyintostart-up companies.??Suchastrategymaysoundlikearecipeforeconomic successbutitisnotwithoutitscritics.Thesepeopleworrythatfavouring appliedresearchwillmeanneglectingbasicscienceeventuallystarving industryoffreshideas.Ifeveryscientiststartsthinkinglikeanentrepreneur 企业家theargumentgoesthenthetraditionalprinciplesofuniversityresearch beingcuriosity-drivenfreeandwidelyavailablewillsuffer.Othersclaimthat manyoftheprogrammestopromotetechnologytransferareawasteofmoney becausehalfthesmallbusinessesthatarepromotedareboundtogobankrupt withinafewyears.??Whilethisdebatecontinuesnewideasflow atasteadyratefromGermany’sresearchnetworkswhichbearfamousnamessuch asHelmholtzMaxPlanckandLeibniz.Yetitisthefourthnetworkthe FraunhoferSocietythatplaysthegreatestroleintechnology transfer.??Foundedin1949theFraunhoferSocietyisnow Europe’slargestorganisationforappliedtechnologyandhas59institutes employing12000people.Itcontinuestogrow.Lastyearitswallowedupthe HeinrichHertzInstituteforCommunicationTechnologyinBerlin.Todaythere areevenFraunhofersintheUSandAsia.Thewordexpertiseinline3couldbebestreplacedby
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}} TheGreatestMysteryOfWhales{{/B}}??Thewhaleis awarm-bloodedair-breathinganimalgivingbirthtoitsyoungalivesucking them-andlikeallmammalsoriginatedonland.Therearemany{{U}}?51 ?{{/U}}ofthis.Itsfrontflippers鳍状肢usedforsteeringandstability aretracesoffeet.??Immensestrengthis{{U}}?52?{{/U}} intothegreatbodyofthebigwhalesandinfactmostofawhale’sbodyisone giganticmuscle.Thebluewhale’spullingstrengthhasbeenestimated {{U}}?53?{{/U}}400horsepower.Onespecimenwasreportedtohavetowed 拖awhalingvesselforsevenhoursatthe{{U}}?54?{{/U}}ofeight knots节.??Anangrywhalewill{{U}}?55?{{/U}}aship. AfamousexampleofthiswasthefateofwhalerEssex{{U}}?56?{{/U}} wassunkoffthecoastofSouthAmericaearlyinthelastcentury.More recentlysteelshipshave{{U}}?57?{{/U}}theirplatesbuckled使弯曲 inthesameway.Spermwhales抹香鲸wereknowntoseizetheold-timewhaleboats intheirjawsandcrushthem.??Thegreatest{{U}}?58 ?{{/U}}ofwhalesistheirdivingability.Thespermwhaledivestothe bottomforhis{{U}}?59?{{/U}}foodtheoctopus章鱼.Inthatsearch heisknowntogoasfardownas3200feetwherethe{{U}}?60?{{/U}} is1400poundstoasquareinch.Doingsohewill{{U}}?61?{{/U}} underwaterlongasonehour.Twospecialskillsareinvolvedinthis:storingup enough{{U}}?62?{{/U}}allwhalesareair-breathedandtoleratingthe greatchangeinpressure.Justhowhedoesitscientistshavenot?{{U}} ?63?{{/U}}.Itisbelievedthatsomeoftheoxygenisstoredina special{{U}}?64?{{/U}}ofbloodvesselsratherthanjustheldinthe lungs.Anditisbelievedthataspecialkindofoilinhisheadissomesortof compensatingmechanismthat{{U}}?65?{{/U}}adjuststheinternal pressureofhisbody.Butsinceyoucan’tbringalivewhaleintothe laboratoryforstudynooneknowsjusthowthesethings work.
{{*HTML*}}?阅读下面这篇短文短文后列出了7个句子请根据短文的内容对每个句子作出判断如果该句提供的是正确信息请选择A项如果该句提供的是错误信息请选择B项如果该句的信息文章中没有提及请选择C项 ??????? ????????{{B}}Magaplane 巨型飞机{{/B}}??TheBoeingCorp.andEurope’sAirbusconsortium财团 arepreparingtoofferbiggerairplanestotheworld’sairlines.Nowthattalks onajointprojecthavebrokendownBoeingispushingastretched拓展的version of747andAirbusisdesigninganall-newaircraftknownasthe A3XX.??Seating550passengersinthebasicmodeland650ina stretchedversionthe1.2millionpoundA3XXwillnotonlybethelargest airplaneintheworldbutitwillalsobeoneofthemostadvanced.Theouter wingsandthehorizontalstabilizerasbigasasmallerjet’swingwillbe madeofcarbon-fibercompositematerialsandwillbethelargestsuch structuresonanyaircraftexcepttheB-2stealthbomber隐形轰炸机.Metalskins willbewelded焊接togetherwithlasersremovingthousandsof fasteners.??WhenastrongwindstrikestheA3XX’s260-footwing movablecontrolsurfaceswillpreventitfromflexing扭曲likeagiantspring. Thiswillmaketheridesmootherandwillsaveweightbyreducingtheloadon thewingspars翼梁.Aflexible-skinnedflap副翼willsubtlychangethewing’s curvature曲面tomatchtheairplane’schangingweightasitburnsfueloneach journey.??TheA3XXwillcarryupto1600mealsfillingmore than100foodandbeverage饮料carts.TomakemoreroomforpassengersAirbus planstoputthecartsinthelowerhold;automaticconveyorsandelevatorswill deliverthemtothetwopassengerdecks.AirlineshaveaskedAirbustolookat extrafeaturesrangingfromlower-decksleepercabinstoachildren’s playroom.AirbusexpectstooffertheA3XXtoairlinesin1998andcleliverthefirstaircraftin2003.??1.ThebasicmodelofA3XXcancarrymorethan500passengers.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}} TheGreatestMysteryOfWhales{{/B}}??Thewhaleis awarm-bloodedair-breathinganimalgivingbirthtoitsyoungalivesucking them-andlikeallmammalsoriginatedonland.Therearemany{{U}}?51 ?{{/U}}ofthis.Itsfrontflippers鳍状肢usedforsteeringandstability aretracesoffeet.??Immensestrengthis{{U}}?52?{{/U}} intothegreatbodyofthebigwhalesandinfactmostofawhale’sbodyisone giganticmuscle.Thebluewhale’spullingstrengthhasbeenestimated {{U}}?53?{{/U}}400horsepower.Onespecimenwasreportedtohavetowed 拖awhalingvesselforsevenhoursatthe{{U}}?54?{{/U}}ofeight knots节.??Anangrywhalewill{{U}}?55?{{/U}}aship. AfamousexampleofthiswasthefateofwhalerEssex{{U}}?56?{{/U}} wassunkoffthecoastofSouthAmericaearlyinthelastcentury.More recentlysteelshipshave{{U}}?57?{{/U}}theirplatesbuckled使弯曲 inthesameway.Spermwhales抹香鲸wereknowntoseizetheold-timewhaleboats intheirjawsandcrushthem.??Thegreatest{{U}}?58 ?{{/U}}ofwhalesistheirdivingability.Thespermwhaledivestothe bottomforhis{{U}}?59?{{/U}}foodtheoctopus章鱼.Inthatsearch heisknowntogoasfardownas3200feetwherethe{{U}}?60?{{/U}} is1400poundstoasquareinch.Doingsohewill{{U}}?61?{{/U}} underwaterlongasonehour.Twospecialskillsareinvolvedinthis:storingup enough{{U}}?62?{{/U}}allwhalesareair-breathedandtoleratingthe greatchangeinpressure.Justhowhedoesitscientistshavenot?{{U}} ?63?{{/U}}.Itisbelievedthatsomeoftheoxygenisstoredina special{{U}}?64?{{/U}}ofbloodvesselsratherthanjustheldinthe lungs.Anditisbelievedthataspecialkindofoilinhisheadissomesortof compensatingmechanismthat{{U}}?65?{{/U}}adjuststheinternal pressureofhisbody.Butsinceyoucan’tbringalivewhaleintothe laboratoryforstudynooneknowsjusthowthesethings work.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}} TheGreatestMysteryOfWhales{{/B}}??Thewhaleis awarm-bloodedair-breathinganimalgivingbirthtoitsyoungalivesucking them-andlikeallmammalsoriginatedonland.Therearemany{{U}}?51 ?{{/U}}ofthis.Itsfrontflippers鳍状肢usedforsteeringandstability aretracesoffeet.??Immensestrengthis{{U}}?52?{{/U}} intothegreatbodyofthebigwhalesandinfactmostofawhale’sbodyisone giganticmuscle.Thebluewhale’spullingstrengthhasbeenestimated {{U}}?53?{{/U}}400horsepower.Onespecimenwasreportedtohavetowed 拖awhalingvesselforsevenhoursatthe{{U}}?54?{{/U}}ofeight knots节.??Anangrywhalewill{{U}}?55?{{/U}}aship. AfamousexampleofthiswasthefateofwhalerEssex{{U}}?56?{{/U}} wassunkoffthecoastofSouthAmericaearlyinthelastcentury.More recentlysteelshipshave{{U}}?57?{{/U}}theirplatesbuckled使弯曲 inthesameway.Spermwhales抹香鲸wereknowntoseizetheold-timewhaleboats intheirjawsandcrushthem.??Thegreatest{{U}}?58 ?{{/U}}ofwhalesistheirdivingability.Thespermwhaledivestothe bottomforhis{{U}}?59?{{/U}}foodtheoctopus章鱼.Inthatsearch heisknowntogoasfardownas3200feetwherethe{{U}}?60?{{/U}} is1400poundstoasquareinch.Doingsohewill{{U}}?61?{{/U}} underwaterlongasonehour.Twospecialskillsareinvolvedinthis:storingup enough{{U}}?62?{{/U}}allwhalesareair-breathedandtoleratingthe greatchangeinpressure.Justhowhedoesitscientistshavenot?{{U}} ?63?{{/U}}.Itisbelievedthatsomeoftheoxygenisstoredina special{{U}}?64?{{/U}}ofbloodvesselsratherthanjustheldinthe lungs.Anditisbelievedthataspecialkindofoilinhisheadissomesortof compensatingmechanismthat{{U}}?65?{{/U}}adjuststheinternal pressureofhisbody.Butsinceyoucan’tbringalivewhaleintothe laboratoryforstudynooneknowsjusthowthesethings work.
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{{*HTML*}}阅读下面的短文文章中有5处空白文章后面有6组文字请根据文章的内容选择5组文字将其分别放回文章原有位置以恢复文章原貌 {{B}} WhyWouldTheyFalselyConfess?{{/B}}??Whyon earthwouldaninnocentpersonfalselyconfesstocommittingacrime?Tomost peopleitjustdoesn’tseemlogical.Butitislogicalsayexpertsifyou understandwhatcanhappeninapoliceinterrogation审讯room.? ?Undertherightconditionspeople’smindsaresusceptible易受影响的to influenceandthepressureputonsuspectsduringpolicequestioningis enormous;{{U}}?46?{{/U}}Thepressureisimportanttounderstand becauseotherwiseit’simpossibletounderstandwhysomeonewouldsayhedid somethinghedidn’tdo.Theansweris:toputanendtoanuncomfortable situationthatwillcontinueuntilhedoesconfess.? ?DevelopmentalpsychologistMaryRedlichrecentlyconductedalaboratory studytodeterminehowlikelypeoplearetoconfesstothingstheydidn’tdo. {{U}}?47?{{/U}}?Theresearchersthenintentionallycrashedthe computersandaccusedtheparticipantsofhittingthealtkeytoseeifthey wouldsignastatementfalselytakingresponsibility.??Redlich’s findingsclearlydemonstratehoweasyitcanbetogetpeopletofalsely confess:59percentoftheyoungadultsintheexperimentimmediatelyconfessed. {{U}}?48?{{/U}}Ofthe15-to16-year-olds72percentsigned confessionsasdid78percentofthe12-to13-year-olds.? ?There’snoquestionthatyoungpeoplearemoreatrisksaysSaul KassinapsychologyprofessoratWilliamsCollegewhohasdonesimilarstudies withsimilarresults.{{U}}?49?{{/U}}??BothKassinand Redlichnotethattheentireinterrogationintheirexperimentsconsistedofa simpleaccusation-nothoursofaggressivequestioning-andstillmost participantsfalselyconfessed.??{{U}}?50?{{/U}}In somewayssaysKassinfalseconfessionbecomesarationaldecision.A ?Inherexperimentparticipantswereseatedatcomputersandtoldnotto hitthealtkeybecausedoingsowouldcrashthesystems.B?Because ofthestressofapoliceinterrogationtheyconcludesuspectscanbecome convincedthatfalselyconfessingistheeasiestwayoutofabad situation.C?It’salittlelikesomebody’sworkingonthemwitha dental牙齿的drillsaysFranklinZimringalawprofessorattheUniversityof CaliforniaatBerkeley.D?Butthebaselineisthatadultsarehighly vulnerabletoo.E?Thecourtfoundhiminnocentandhewas released.F?Redlichalsofoundthattheyoungertheparticipantthe morelikelyafalseconfession.
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{{*HTML*}}{{B}}第二篇{{/B}} {{B}} SuperconductingCeramic陶瓷{{/B}}??Anunderground revolutionbeginsthiswinter.Withtheflip轻击ofaswitch30000homesin onepartofDetroitwillsoonbecomethefirstinthecountrytoreceive electricitytransmittedbyice-coldhigh-performancecables.OtherAmerican citiesareexpectedtofollowDetroit’sexampleintheyearsaheadwhichcould conserveenormousamountsofpower.??Thenewelectricalcablesat theFrisbiepowerstationinDetroitarerevolutionarybecausetheyaremadeof superconductors.Asuperconductorisamaterialthattransmitselectricitywith littleornoresistance.Resistanceisthedegreetowhichasubstanceresists electriccurrent.Allcommonelectricalconductorshaveacertainamountof electricalresistance.Theyconvertatleastsomeoftheelectricalenergy passingthroughthemintowasteheat.?Superconductorsdon’t.Noone understandshowsuperconductivityworks.Itjustdoes.??Making superconductorsisn’teasy.Asuperconductingmaterialhastobecooledtoan extremelylowtemperaturetoloseitsresistance.Thefirstsuperconductors mademorethan50yearsagohadtobecooledto-263degreesCelsiusbefore theylosttheirresistance.Newersuperconductingmaterialslosetheir resistanceat-143degreesCelsius.??Thesuperconductorscable installedattheFrisbiestationismadeofaceramicmaterialthatcontains copperoxygenbismuth铋strontium锶andcalcium钙.Aceramicisa hardstrongcompoundmadefromclayorminerals.Thesuperconductingceramic hasbeenfashionedintoatapethatiswrappedlengthwisearoundalongtube filledwithliquidnitrogen.Liquidnitrogenissupercoldandlowersthe temperatureoftheceramictapetothepointwhereitconveyselectricitywith zeroresistance.??TheUnitedStateslosesanenormousamountof electricityeachyeartoresistance.Becausecooledsuperconductorshaveno resistancetheywastemuchlesspower.OthercitiesarewatchingtheFrisbie experimentinthehopethattheymightswitchtosuperconductingcableand conservepowertoo.Comparedtocommonelectricalconductorssuperconductors
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{{*HTML*}}?阅读下面这篇短文短文后列出了7个句子请根据短文的内容对每个句子作出判断如果该句提供的是正确信息请选择A项如果该句提供的是错误信息请选择B项如果该句的信息文章中没有提及请选择C项 ??????? ????????{{B}}Magaplane 巨型飞机{{/B}}??TheBoeingCorp.andEurope’sAirbusconsortium财团 arepreparingtoofferbiggerairplanestotheworld’sairlines.Nowthattalks onajointprojecthavebrokendownBoeingispushingastretched拓展的version of747andAirbusisdesigninganall-newaircraftknownasthe A3XX.??Seating550passengersinthebasicmodeland650ina stretchedversionthe1.2millionpoundA3XXwillnotonlybethelargest airplaneintheworldbutitwillalsobeoneofthemostadvanced.Theouter wingsandthehorizontalstabilizerasbigasasmallerjet’swingwillbe madeofcarbon-fibercompositematerialsandwillbethelargestsuch structuresonanyaircraftexcepttheB-2stealthbomber隐形轰炸机.Metalskins willbewelded焊接togetherwithlasersremovingthousandsof fasteners.??WhenastrongwindstrikestheA3XX’s260-footwing movablecontrolsurfaceswillpreventitfromflexing扭曲likeagiantspring. Thiswillmaketheridesmootherandwillsaveweightbyreducingtheloadon thewingspars翼梁.Aflexible-skinnedflap副翼willsubtlychangethewing’s curvature曲面tomatchtheairplane’schangingweightasitburnsfueloneach journey.??TheA3XXwillcarryupto1600mealsfillingmore than100foodandbeverage饮料carts.TomakemoreroomforpassengersAirbus planstoputthecartsinthelowerhold;automaticconveyorsandelevatorswill deliverthemtothetwopassengerdecks.AirlineshaveaskedAirbustolookat extrafeaturesrangingfromlower-decksleepercabinstoachildren’s playroom.ThefirstA3XXwillbeavailablein2003.
{{*HTML*}}下面有3篇短文每篇短文后有5道题每道题后面有4个选项请根据文章的内容从每题所给的4个选项中选择1个最佳答案{{B}}第一篇{{/B}} ??{{B}} TechnologyTransferinGermany{{/B}}??Whenit comestotranslatingbasicresearchintoindustrialsuccessfewnationscan matchGermany.Sincethe1940sthenation’svastindustrialbasehasbeenfed withaconstantstreamofnewideasandexpertisefromscience.Andthough Germanprosperity繁荣hasfaltered衰退overthepastdecadebecauseofthe hugecostofunifyingeastandwestaswellastheglobaleconomicdeclineit stillhasanenviable令人羡慕的recordforturningideasintoprofit.? ?MuchofthereasonforthatsuccessistheFraunhoferSocietyanetwork ofresearchinstitutesthatexistssolelytosolveindustrialproblemsand createsought-aftertechnologies.ButtodaytheFraunhoferinstituteshave competition.Universitiesaretakinganeverlargerroleintechnologytransfer andtechnologyparksarespringingupallover.Theseeffortsarebeing complementedbythefederalprogrammesforpumpingmoneyintostart-up companies.??Suchastrategymaysoundlikearecipeforeconomic successbutitisnotwithoutitscritics.Thesepeopleworrythatfavouring appliedresearchwillmeanneglectingbasicscienceeventuallystarving industryoffreshideas.Ifeveryscientiststartsthinkinglikeanentrepreneur 企业家theargumentgoesthenthetraditionalprinciplesofuniversityresearch beingcuriosity-drivenfreeandwidelyavailablewillsuffer.Othersclaimthat manyoftheprogrammestopromotetechnologytransferareawasteofmoney becausehalfthesmallbusinessesthatarepromotedareboundtogobankrupt withinafewyears.??Whilethisdebatecontinuesnewideasflow atasteadyratefromGermany’sresearchnetworkswhichbearfamousnamessuch asHelmholtzMaxPlanckandLeibniz.Yetitisthefourthnetworkthe FraunhoferSocietythatplaysthegreatestroleintechnology transfer.??Foundedin1949theFraunhoferSocietyisnow Europe’slargestorganisationforappliedtechnologyandhas59institutes employing12000people.Itcontinuestogrow.Lastyearitswallowedupthe HeinrichHertzInstituteforCommunicationTechnologyinBerlin.Todaythere areevenFraunhofersintheUSandAsia.TheFraunhoferSocietyisthelargestorganisationforappliedtechnologyin
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{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}} TheGreatestMysteryOfWhales{{/B}}??Thewhaleis awarm-bloodedair-breathinganimalgivingbirthtoitsyoungalivesucking them-andlikeallmammalsoriginatedonland.Therearemany{{U}}?51 ?{{/U}}ofthis.Itsfrontflippers鳍状肢usedforsteeringandstability aretracesoffeet.??Immensestrengthis{{U}}?52?{{/U}} intothegreatbodyofthebigwhalesandinfactmostofawhale’sbodyisone giganticmuscle.Thebluewhale’spullingstrengthhasbeenestimated {{U}}?53?{{/U}}400horsepower.Onespecimenwasreportedtohavetowed 拖awhalingvesselforsevenhoursatthe{{U}}?54?{{/U}}ofeight knots节.??Anangrywhalewill{{U}}?55?{{/U}}aship. AfamousexampleofthiswasthefateofwhalerEssex{{U}}?56?{{/U}} wassunkoffthecoastofSouthAmericaearlyinthelastcentury.More recentlysteelshipshave{{U}}?57?{{/U}}theirplatesbuckled使弯曲 inthesameway.Spermwhales抹香鲸wereknowntoseizetheold-timewhaleboats intheirjawsandcrushthem.??Thegreatest{{U}}?58 ?{{/U}}ofwhalesistheirdivingability.Thespermwhaledivestothe bottomforhis{{U}}?59?{{/U}}foodtheoctopus章鱼.Inthatsearch heisknowntogoasfardownas3200feetwherethe{{U}}?60?{{/U}} is1400poundstoasquareinch.Doingsohewill{{U}}?61?{{/U}} underwaterlongasonehour.Twospecialskillsareinvolvedinthis:storingup enough{{U}}?62?{{/U}}allwhalesareair-breathedandtoleratingthe greatchangeinpressure.Justhowhedoesitscientistshavenot?{{U}} ?63?{{/U}}.Itisbelievedthatsomeoftheoxygenisstoredina special{{U}}?64?{{/U}}ofbloodvesselsratherthanjustheldinthe lungs.Anditisbelievedthataspecialkindofoilinhisheadissomesortof compensatingmechanismthat{{U}}?65?{{/U}}adjuststheinternal pressureofhisbody.Butsinceyoucan’tbringalivewhaleintothe laboratoryforstudynooneknowsjusthowthesethings work.
{{*HTML*}}{{B}}第三篇{{/B}} {{B}} TheScienceoftheFuture{{/B}}??Untilrecently thescienceofthefuturewassupposedtobeelectronicsandartificial intelligence.Todayitseemsmoreandmorelikelythatthenextgreat breakthroughsintechnologywillbebroughtthroughacombinationofthosetwo scienceswithorganicchemistryandgeneticengineering.Thiscombinationisthe scienceofbiotechnology.??Organicchemistryenablesusto producemarveloussynthetic合成的materials.Howeveritisstilldifficultto manufactureanythingthathasthecapacityofwooltoconserveheatandalsoto absorbmoisture.Nothingthatwehavebeenabletoproducesofarcomesanywhere nearthecombinationofstrengthlightnessandflexibilitythatwefindinthe bodiesofordinaryinsects.??Neverthelessscientistsinthe laboratoryhavealreadysucceededingrowingamaterialthathasmanyofthe characteristicsofhumanskin.Thenextstepmaywellbebiotechheartsand eyeswhichcanreplacediseasedorgansinhumanbeings.Thesewillnotbe rejectedbythebodyasisthecasewithorgansfromhumans.? ?Theapplicationofbiotechnologytoenergyproductionseemsevenmore promising.In1996thefamousscience-fictionwriterArthurC.Clarkemanyof whosepreviouspredictionshavecometruesaidthatwemaysoonbeableto developremarkablycheapandrenewablesourcesofenergy.Someofthesepower sourceswillbebiological.Clarkeandothershavewarnedusrepeatedlythat soonerorlaterwewillhavetogiveupourdependenceonnon-renewablepower sources.Coaloilandgasareindeedconvenient.Howeverusingthemalsomeans creatingdangerouslyhighlevelsofpollution.Itwillbeimpossibletomeetthe growingdemandforenergywithoutincreasingthatpollutiontocatastrophic 灾难性的levelsunlesswedeveloppowersourcesthatarebothcheaperand cleaner.??Itisattemptingtothinkthatbiotechnologyorsome otherscienceofthefuturecansolveourproblems.Beforewesurrenderto thattemptationweshouldremembernuclearpower.Onlyafewgenerationsagoit seemedtopromiselimitlesscheapandsafeenergy.Todaythosepromiseslie buriedinaconcretegraveinaplacecalledChernobylintheUkraine. Biotechnologyisunlikelyhowevertobreakitspromisesinquitethesameor suchadangerousway.Accordingtothepassageitmaysoonbepossible
{{*HTML*}}?阅读下面这篇短文短文后列出了7个句子请根据短文的内容对每个句子作出判断如果该句提供的是正确信息请选择A项如果该句提供的是错误信息请选择B项如果该句的信息文章中没有提及请选择C项 ??????? ????????{{B}}Magaplane 巨型飞机{{/B}}??TheBoeingCorp.andEurope’sAirbusconsortium财团 arepreparingtoofferbiggerairplanestotheworld’sairlines.Nowthattalks onajointprojecthavebrokendownBoeingispushingastretched拓展的version of747andAirbusisdesigninganall-newaircraftknownasthe A3XX.??Seating550passengersinthebasicmodeland650ina stretchedversionthe1.2millionpoundA3XXwillnotonlybethelargest airplaneintheworldbutitwillalsobeoneofthemostadvanced.Theouter wingsandthehorizontalstabilizerasbigasasmallerjet’swingwillbe madeofcarbon-fibercompositematerialsandwillbethelargestsuch structuresonanyaircraftexcepttheB-2stealthbomber隐形轰炸机.Metalskins willbewelded焊接togetherwithlasersremovingthousandsof fasteners.??WhenastrongwindstrikestheA3XX’s260-footwing movablecontrolsurfaceswillpreventitfromflexing扭曲likeagiantspring. Thiswillmaketheridesmootherandwillsaveweightbyreducingtheloadon thewingspars翼梁.Aflexible-skinnedflap副翼willsubtlychangethewing’s curvature曲面tomatchtheairplane’schangingweightasitburnsfueloneach journey.??TheA3XXwillcarryupto1600mealsfillingmore than100foodandbeverage饮料carts.TomakemoreroomforpassengersAirbus planstoputthecartsinthelowerhold;automaticconveyorsandelevatorswill deliverthemtothetwopassengerdecks.AirlineshaveaskedAirbustolookat extrafeaturesrangingfromlower-decksleepercabinstoachildren’s playroom.A3XXwillbebiggerthantheB-2stealthbomber.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}} TheGreatestMysteryOfWhales{{/B}}??Thewhaleis awarm-bloodedair-breathinganimalgivingbirthtoitsyoungalivesucking them-andlikeallmammalsoriginatedonland.Therearemany{{U}}?51 ?{{/U}}ofthis.Itsfrontflippers鳍状肢usedforsteeringandstability aretracesoffeet.??Immensestrengthis{{U}}?52?{{/U}} intothegreatbodyofthebigwhalesandinfactmostofawhale’sbodyisone giganticmuscle.Thebluewhale’spullingstrengthhasbeenestimated {{U}}?53?{{/U}}400horsepower.Onespecimenwasreportedtohavetowed 拖awhalingvesselforsevenhoursatthe{{U}}?54?{{/U}}ofeight knots节.??Anangrywhalewill{{U}}?55?{{/U}}aship. AfamousexampleofthiswasthefateofwhalerEssex{{U}}?56?{{/U}} wassunkoffthecoastofSouthAmericaearlyinthelastcentury.More recentlysteelshipshave{{U}}?57?{{/U}}theirplatesbuckled使弯曲 inthesameway.Spermwhales抹香鲸wereknowntoseizetheold-timewhaleboats intheirjawsandcrushthem.??Thegreatest{{U}}?58 ?{{/U}}ofwhalesistheirdivingability.Thespermwhaledivestothe bottomforhis{{U}}?59?{{/U}}foodtheoctopus章鱼.Inthatsearch heisknowntogoasfardownas3200feetwherethe{{U}}?60?{{/U}} is1400poundstoasquareinch.Doingsohewill{{U}}?61?{{/U}} underwaterlongasonehour.Twospecialskillsareinvolvedinthis:storingup enough{{U}}?62?{{/U}}allwhalesareair-breathedandtoleratingthe greatchangeinpressure.Justhowhedoesitscientistshavenot?{{U}} ?63?{{/U}}.Itisbelievedthatsomeoftheoxygenisstoredina special{{U}}?64?{{/U}}ofbloodvesselsratherthanjustheldinthe lungs.Anditisbelievedthataspecialkindofoilinhisheadissomesortof compensatingmechanismthat{{U}}?65?{{/U}}adjuststheinternal pressureofhisbody.Butsinceyoucan’tbringalivewhaleintothe laboratoryforstudynooneknowsjusthowthesethings work.
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{{*HTML*}}{{B}}第二篇{{/B}} {{B}} SuperconductingCeramic陶瓷{{/B}}??Anunderground revolutionbeginsthiswinter.Withtheflip轻击ofaswitch30000homesin onepartofDetroitwillsoonbecomethefirstinthecountrytoreceive electricitytransmittedbyice-coldhigh-performancecables.OtherAmerican citiesareexpectedtofollowDetroit’sexampleintheyearsaheadwhichcould conserveenormousamountsofpower.??Thenewelectricalcablesat theFrisbiepowerstationinDetroitarerevolutionarybecausetheyaremadeof superconductors.Asuperconductorisamaterialthattransmitselectricitywith littleornoresistance.Resistanceisthedegreetowhichasubstanceresists electriccurrent.Allcommonelectricalconductorshaveacertainamountof electricalresistance.Theyconvertatleastsomeoftheelectricalenergy passingthroughthemintowasteheat.?Superconductorsdon’t.Noone understandshowsuperconductivityworks.Itjustdoes.??Making superconductorsisn’teasy.Asuperconductingmaterialhastobecooledtoan extremelylowtemperaturetoloseitsresistance.Thefirstsuperconductors mademorethan50yearsagohadtobecooledto-263degreesCelsiusbefore theylosttheirresistance.Newersuperconductingmaterialslosetheir resistanceat-143degreesCelsius.??Thesuperconductorscable installedattheFrisbiestationismadeofaceramicmaterialthatcontains copperoxygenbismuth铋strontium锶andcalcium钙.Aceramicisa hardstrongcompoundmadefromclayorminerals.Thesuperconductingceramic hasbeenfashionedintoatapethatiswrappedlengthwisearoundalongtube filledwithliquidnitrogen.Liquidnitrogenissupercoldandlowersthe temperatureoftheceramictapetothepointwhereitconveyselectricitywith zeroresistance.??TheUnitedStateslosesanenormousamountof electricityeachyeartoresistance.Becausecooledsuperconductorshaveno resistancetheywastemuchlesspower.OthercitiesarewatchingtheFrisbie experimentinthehopethattheymightswitchtosuperconductingcableand conservepowertoo.Whatelementenablestheceramictapetoloweritstemperature?
{{*HTML*}}??下面有3篇短文每篇短文后有5道题每道题后面有4个选项{{B}}第一篇{{/B}} ??????? ????????{{B}}ClobalCancerRatesto Rise50%by2020{{/B}}??Thenumberofnewcancercasesworldwideis expectedtoincreaseby50%bytheyear2020.Butanewreportsuggeststhatas manyasathirdofnewcancerscouldbeavoidedbyadoptinghealthierlifestyles andthroughpublichealthaction.??TheWorldCancerReport releasedbytheInternationalAgencyforResearchonCancerIARCpartofthe WorldHealthOrganizationshowsthatcancerhasnowemergedasamajorpublic healththreatindevelopingcountriesaswellasaffluentones.? ?Overallcancerwasresponsiblefor12%ofallheathsin2000.Butinmany countriesmorethanaquarterofalldeathsarecausedbycancer.? ?Thereportshowsthat10millionnewcancerswerediagnosedgloballyin 2000andthatnumberisexpectedtoriseto15millionby2020.Researcherssay mostofthatincreasewillmainlybeduetosteadilyagingpopulationsinboth developedanddevelopingcountriesandcurrenttrendsinsmokingandother unhealthyhabits.??Cancerhasemergedasamajorpublichealth problemindevelopingcountriesforthefirsttimematchingitseffectin industrializedcountriessaysresearcherPaulKleihuesMDdirectorofIARA inanewsrelease.Onceconsidereda’Western’diseasetheReporthighlights thatmorethan50percentoftheworld’scancerburdenintermsofbothnumbers ofcasesanddeathsalreadyoccursindevelopingcountries.? ?Theriskofbeingdiagnosedwithcancerindevelopedcountriesisdouble thatinless-developedones.Howevertheriskofdyingfromcancerismuch higherindevelopingcountrieswhere80%ofcancerpatientsalreadyhave late-stageincurabletumorsatthetimeofdiagnosis.? ?Researcherssaycancerrateshavetraditionallybeenhigherindeveloped countriesduetogreaterexposuretotobaccooccupationalcarcinogensandan unhealthyWesterndietandlifestyle.Asless-developedcountriesbecome industrializedandmoreprosperoustheytendtoadoptthehigh-fatdietandlow physicalactivitylevelstypicallyseenintheWestwhichincreasecancer rates.WhichofthefollowingstatementsinNOTcorrect?
{{*HTML*}}{{B}}第三篇{{/B}} {{B}} TheScienceoftheFuture{{/B}}??Untilrecently thescienceofthefuturewassupposedtobeelectronicsandartificial intelligence.Todayitseemsmoreandmorelikelythatthenextgreat breakthroughsintechnologywillbebroughtthroughacombinationofthosetwo scienceswithorganicchemistryandgeneticengineering.Thiscombinationisthe scienceofbiotechnology.??Organicchemistryenablesusto producemarveloussynthetic合成的materials.Howeveritisstilldifficultto manufactureanythingthathasthecapacityofwooltoconserveheatandalsoto absorbmoisture.Nothingthatwehavebeenabletoproducesofarcomesanywhere nearthecombinationofstrengthlightnessandflexibilitythatwefindinthe bodiesofordinaryinsects.??Neverthelessscientistsinthe laboratoryhavealreadysucceededingrowingamaterialthathasmanyofthe characteristicsofhumanskin.Thenextstepmaywellbebiotechheartsand eyeswhichcanreplacediseasedorgansinhumanbeings.Thesewillnotbe rejectedbythebodyasisthecasewithorgansfromhumans.? ?Theapplicationofbiotechnologytoenergyproductionseemsevenmore promising.In1996thefamousscience-fictionwriterArthurC.Clarkemanyof whosepreviouspredictionshavecometruesaidthatwemaysoonbeableto developremarkablycheapandrenewablesourcesofenergy.Someofthesepower sourceswillbebiological.Clarkeandothershavewarnedusrepeatedlythat soonerorlaterwewillhavetogiveupourdependenceonnon-renewablepower sources.Coaloilandgasareindeedconvenient.Howeverusingthemalsomeans creatingdangerouslyhighlevelsofpollution.Itwillbeimpossibletomeetthe growingdemandforenergywithoutincreasingthatpollutiontocatastrophic 灾难性的levelsunlesswedeveloppowersourcesthatarebothcheaperand cleaner.??Itisattemptingtothinkthatbiotechnologyorsome otherscienceofthefuturecansolveourproblems.Beforewesurrenderto thattemptationweshouldremembernuclearpower.Onlyafewgenerationsagoit seemedtopromiselimitlesscheapandsafeenergy.Todaythosepromiseslie buriedinaconcretegraveinaplacecalledChernobylintheUkraine. Biotechnologyisunlikelyhowevertobreakitspromisesinquitethesameor suchadangerousway.Whatdowelearnfromthelastparagraph?
{{*HTML*}}阅读下面的短文文章中有5处空白文章后面有6组文字请根据文章的内容选择5组文字将其分别放回文章原有位置以恢复文章原貌 {{B}} WhyWouldTheyFalselyConfess?{{/B}}??Whyon earthwouldaninnocentpersonfalselyconfesstocommittingacrime?Tomost peopleitjustdoesn’tseemlogical.Butitislogicalsayexpertsifyou understandwhatcanhappeninapoliceinterrogation审讯room.? ?Undertherightconditionspeople’smindsaresusceptible易受影响的to influenceandthepressureputonsuspectsduringpolicequestioningis enormous;{{U}}?46?{{/U}}Thepressureisimportanttounderstand becauseotherwiseit’simpossibletounderstandwhysomeonewouldsayhedid somethinghedidn’tdo.Theansweris:toputanendtoanuncomfortable situationthatwillcontinueuntilhedoesconfess.? ?DevelopmentalpsychologistMaryRedlichrecentlyconductedalaboratory studytodeterminehowlikelypeoplearetoconfesstothingstheydidn’tdo. {{U}}?47?{{/U}}?Theresearchersthenintentionallycrashedthe computersandaccusedtheparticipantsofhittingthealtkeytoseeifthey wouldsignastatementfalselytakingresponsibility.??Redlich’s findingsclearlydemonstratehoweasyitcanbetogetpeopletofalsely confess:59percentoftheyoungadultsintheexperimentimmediatelyconfessed. {{U}}?48?{{/U}}Ofthe15-to16-year-olds72percentsigned confessionsasdid78percentofthe12-to13-year-olds.? ?There’snoquestionthatyoungpeoplearemoreatrisksaysSaul KassinapsychologyprofessoratWilliamsCollegewhohasdonesimilarstudies withsimilarresults.{{U}}?49?{{/U}}??BothKassinand Redlichnotethattheentireinterrogationintheirexperimentsconsistedofa simpleaccusation-nothoursofaggressivequestioning-andstillmost participantsfalselyconfessed.??{{U}}?50?{{/U}}In somewayssaysKassinfalseconfessionbecomesarationaldecision.A ?Inherexperimentparticipantswereseatedatcomputersandtoldnotto hitthealtkeybecausedoingsowouldcrashthesystems.B?Because ofthestressofapoliceinterrogationtheyconcludesuspectscanbecome convincedthatfalselyconfessingistheeasiestwayoutofabad situation.C?It’salittlelikesomebody’sworkingonthemwitha dental牙齿的drillsaysFranklinZimringalawprofessorattheUniversityof CaliforniaatBerkeley.D?Butthebaselineisthatadultsarehighly vulnerabletoo.E?Thecourtfoundhiminnocentandhewas released.F?Redlichalsofoundthattheyoungertheparticipantthe morelikelyafalseconfession.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}} TheGreatestMysteryOfWhales{{/B}}??Thewhaleis awarm-bloodedair-breathinganimalgivingbirthtoitsyoungalivesucking them-andlikeallmammalsoriginatedonland.Therearemany{{U}}?51 ?{{/U}}ofthis.Itsfrontflippers鳍状肢usedforsteeringandstability aretracesoffeet.??Immensestrengthis{{U}}?52?{{/U}} intothegreatbodyofthebigwhalesandinfactmostofawhale’sbodyisone giganticmuscle.Thebluewhale’spullingstrengthhasbeenestimated {{U}}?53?{{/U}}400horsepower.Onespecimenwasreportedtohavetowed 拖awhalingvesselforsevenhoursatthe{{U}}?54?{{/U}}ofeight knots节.??Anangrywhalewill{{U}}?55?{{/U}}aship. AfamousexampleofthiswasthefateofwhalerEssex{{U}}?56?{{/U}} wassunkoffthecoastofSouthAmericaearlyinthelastcentury.More recentlysteelshipshave{{U}}?57?{{/U}}theirplatesbuckled使弯曲 inthesameway.Spermwhales抹香鲸wereknowntoseizetheold-timewhaleboats intheirjawsandcrushthem.??Thegreatest{{U}}?58 ?{{/U}}ofwhalesistheirdivingability.Thespermwhaledivestothe bottomforhis{{U}}?59?{{/U}}foodtheoctopus章鱼.Inthatsearch heisknowntogoasfardownas3200feetwherethe{{U}}?60?{{/U}} is1400poundstoasquareinch.Doingsohewill{{U}}?61?{{/U}} underwaterlongasonehour.Twospecialskillsareinvolvedinthis:storingup enough{{U}}?62?{{/U}}allwhalesareair-breathedandtoleratingthe greatchangeinpressure.Justhowhedoesitscientistshavenot?{{U}} ?63?{{/U}}.Itisbelievedthatsomeoftheoxygenisstoredina special{{U}}?64?{{/U}}ofbloodvesselsratherthanjustheldinthe lungs.Anditisbelievedthataspecialkindofoilinhisheadissomesortof compensatingmechanismthat{{U}}?65?{{/U}}adjuststheinternal pressureofhisbody.Butsinceyoucan’tbringalivewhaleintothe laboratoryforstudynooneknowsjusthowthesethings work.
{{*HTML*}}?阅读下面这篇短文短文后列出了7个句子请根据短文的内容对每个句子作出判断如果该句提供的是正确信息请选择A项如果该句提供的是错误信息请选择B项如果该句的信息文章中没有提及请选择C项 ??????? ????????{{B}}Magaplane 巨型飞机{{/B}}??TheBoeingCorp.andEurope’sAirbusconsortium财团 arepreparingtoofferbiggerairplanestotheworld’sairlines.Nowthattalks onajointprojecthavebrokendownBoeingispushingastretched拓展的version of747andAirbusisdesigninganall-newaircraftknownasthe A3XX.??Seating550passengersinthebasicmodeland650ina stretchedversionthe1.2millionpoundA3XXwillnotonlybethelargest airplaneintheworldbutitwillalsobeoneofthemostadvanced.Theouter wingsandthehorizontalstabilizerasbigasasmallerjet’swingwillbe madeofcarbon-fibercompositematerialsandwillbethelargestsuch structuresonanyaircraftexcepttheB-2stealthbomber隐形轰炸机.Metalskins willbewelded焊接togetherwithlasersremovingthousandsof fasteners.??WhenastrongwindstrikestheA3XX’s260-footwing movablecontrolsurfaceswillpreventitfromflexing扭曲likeagiantspring. Thiswillmaketheridesmootherandwillsaveweightbyreducingtheloadon thewingspars翼梁.Aflexible-skinnedflap副翼willsubtlychangethewing’s curvature曲面tomatchtheairplane’schangingweightasitburnsfueloneach journey.??TheA3XXwillcarryupto1600mealsfillingmore than100foodandbeverage饮料carts.TomakemoreroomforpassengersAirbus planstoputthecartsinthelowerhold;automaticconveyorsandelevatorswill deliverthemtothetwopassengerdecks.AirlineshaveaskedAirbustolookat extrafeaturesrangingfromlower-decksleepercabinstoachildren’s playroom.ThewingofA3XXwillnotbespoiledwhenitisstrickenbyastrongwindbecauseitssurfacearedesignedtobemovable.
Doyoubelievethesetwo{{U}}intimate{{/U}}friendsusedtobeenemies?
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}} TheGreatestMysteryOfWhales{{/B}}??Thewhaleis awarm-bloodedair-breathinganimalgivingbirthtoitsyoungalivesucking them-andlikeallmammalsoriginatedonland.Therearemany{{U}}?51 ?{{/U}}ofthis.Itsfrontflippers鳍状肢usedforsteeringandstability aretracesoffeet.??Immensestrengthis{{U}}?52?{{/U}} intothegreatbodyofthebigwhalesandinfactmostofawhale’sbodyisone giganticmuscle.Thebluewhale’spullingstrengthhasbeenestimated {{U}}?53?{{/U}}400horsepower.Onespecimenwasreportedtohavetowed 拖awhalingvesselforsevenhoursatthe{{U}}?54?{{/U}}ofeight knots节.??Anangrywhalewill{{U}}?55?{{/U}}aship. AfamousexampleofthiswasthefateofwhalerEssex{{U}}?56?{{/U}} wassunkoffthecoastofSouthAmericaearlyinthelastcentury.More recentlysteelshipshave{{U}}?57?{{/U}}theirplatesbuckled使弯曲 inthesameway.Spermwhales抹香鲸wereknowntoseizetheold-timewhaleboats intheirjawsandcrushthem.??Thegreatest{{U}}?58 ?{{/U}}ofwhalesistheirdivingability.Thespermwhaledivestothe bottomforhis{{U}}?59?{{/U}}foodtheoctopus章鱼.Inthatsearch heisknowntogoasfardownas3200feetwherethe{{U}}?60?{{/U}} is1400poundstoasquareinch.Doingsohewill{{U}}?61?{{/U}} underwaterlongasonehour.Twospecialskillsareinvolvedinthis:storingup enough{{U}}?62?{{/U}}allwhalesareair-breathedandtoleratingthe greatchangeinpressure.Justhowhedoesitscientistshavenot?{{U}} ?63?{{/U}}.Itisbelievedthatsomeoftheoxygenisstoredina special{{U}}?64?{{/U}}ofbloodvesselsratherthanjustheldinthe lungs.Anditisbelievedthataspecialkindofoilinhisheadissomesortof compensatingmechanismthat{{U}}?65?{{/U}}adjuststheinternal pressureofhisbody.Butsinceyoucan’tbringalivewhaleintothe laboratoryforstudynooneknowsjusthowthesethings work.
{{*HTML*}}下面有3篇短文每篇短文后有5道题每道题后面有4个选项请根据文章的内容从每题所给的4个选项中选择1个最佳答案{{B}}第一篇{{/B}} ??{{B}} TechnologyTransferinGermany{{/B}}??Whenit comestotranslatingbasicresearchintoindustrialsuccessfewnationscan matchGermany.Sincethe1940sthenation’svastindustrialbasehasbeenfed withaconstantstreamofnewideasandexpertisefromscience.Andthough Germanprosperity繁荣hasfaltered衰退overthepastdecadebecauseofthe hugecostofunifyingeastandwestaswellastheglobaleconomicdeclineit stillhasanenviable令人羡慕的recordforturningideasintoprofit.? ?MuchofthereasonforthatsuccessistheFraunhoferSocietyanetwork ofresearchinstitutesthatexistssolelytosolveindustrialproblemsand createsought-aftertechnologies.ButtodaytheFraunhoferinstituteshave competition.Universitiesaretakinganeverlargerroleintechnologytransfer andtechnologyparksarespringingupallover.Theseeffortsarebeing complementedbythefederalprogrammesforpumpingmoneyintostart-up companies.??Suchastrategymaysoundlikearecipeforeconomic successbutitisnotwithoutitscritics.Thesepeopleworrythatfavouring appliedresearchwillmeanneglectingbasicscienceeventuallystarving industryoffreshideas.Ifeveryscientiststartsthinkinglikeanentrepreneur 企业家theargumentgoesthenthetraditionalprinciplesofuniversityresearch beingcuriosity-drivenfreeandwidelyavailablewillsuffer.Othersclaimthat manyoftheprogrammestopromotetechnologytransferareawasteofmoney becausehalfthesmallbusinessesthatarepromotedareboundtogobankrupt withinafewyears.??Whilethisdebatecontinuesnewideasflow atasteadyratefromGermany’sresearchnetworkswhichbearfamousnamessuch asHelmholtzMaxPlanckandLeibniz.Yetitisthefourthnetworkthe FraunhoferSocietythatplaysthegreatestroleintechnology transfer.??Foundedin1949theFraunhoferSocietyisnow Europe’slargestorganisationforappliedtechnologyandhas59institutes employing12000people.Itcontinuestogrow.Lastyearitswallowedupthe HeinrichHertzInstituteforCommunicationTechnologyinBerlin.Todaythere areevenFraunhofersintheUSandAsia.WhatfactorcanbeattributedtoGermanprosperity?
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}} TheGreatestMysteryOfWhales{{/B}}??Thewhaleis awarm-bloodedair-breathinganimalgivingbirthtoitsyoungalivesucking them-andlikeallmammalsoriginatedonland.Therearemany{{U}}?51 ?{{/U}}ofthis.Itsfrontflippers鳍状肢usedforsteeringandstability aretracesoffeet.??Immensestrengthis{{U}}?52?{{/U}} intothegreatbodyofthebigwhalesandinfactmostofawhale’sbodyisone giganticmuscle.Thebluewhale’spullingstrengthhasbeenestimated {{U}}?53?{{/U}}400horsepower.Onespecimenwasreportedtohavetowed 拖awhalingvesselforsevenhoursatthe{{U}}?54?{{/U}}ofeight knots节.??Anangrywhalewill{{U}}?55?{{/U}}aship. AfamousexampleofthiswasthefateofwhalerEssex{{U}}?56?{{/U}} wassunkoffthecoastofSouthAmericaearlyinthelastcentury.More recentlysteelshipshave{{U}}?57?{{/U}}theirplatesbuckled使弯曲 inthesameway.Spermwhales抹香鲸wereknowntoseizetheold-timewhaleboats intheirjawsandcrushthem.??Thegreatest{{U}}?58 ?{{/U}}ofwhalesistheirdivingability.Thespermwhaledivestothe bottomforhis{{U}}?59?{{/U}}foodtheoctopus章鱼.Inthatsearch heisknowntogoasfardownas3200feetwherethe{{U}}?60?{{/U}} is1400poundstoasquareinch.Doingsohewill{{U}}?61?{{/U}} underwaterlongasonehour.Twospecialskillsareinvolvedinthis:storingup enough{{U}}?62?{{/U}}allwhalesareair-breathedandtoleratingthe greatchangeinpressure.Justhowhedoesitscientistshavenot?{{U}} ?63?{{/U}}.Itisbelievedthatsomeoftheoxygenisstoredina special{{U}}?64?{{/U}}ofbloodvesselsratherthanjustheldinthe lungs.Anditisbelievedthataspecialkindofoilinhisheadissomesortof compensatingmechanismthat{{U}}?65?{{/U}}adjuststheinternal pressureofhisbody.Butsinceyoucan’tbringalivewhaleintothe laboratoryforstudynooneknowsjusthowthesethings work.
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