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下面的短文有5处空白，短文后有6个句子，其中5个取自短文，请根据短文内容将其分别放回原有位置，以恢复文章原貌。 Why Do People Shrink?? ?Did you ever se...
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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 ComputerMouse??The basiccomputermouseisanamazinglycleverinventionwitharelativelysimple designthatallowsustopointatthingsonthecomputeranditisvery productive.Thinkofallthethingsyoucandowithamouselikeselectingtext forcopyingandpastingdrawingandevenscrollingonthepagewiththenewer micewiththewheel.Mostofususethecomputermousedailywithoutstoppingto thinkhowitworksuntilitgetsdirtyandwehavetolearnhowtocleanit.We learntopointatthingbeforewelearntospeaksothemouseisaverynatural pointingdevice.Othercomputerpointingdevicesincludelightpensgraphics tabletsandtouchscreenbutthemouseisstillourworkhorse.? ?Thecomputermousewasinventedin1964byDouglasEnglehartofStanford University.Ascomputerscreensbecamepopularandarrowkeyswereusedtomore aroundabodyoftextitbecameclearthatapointingdevicethatallowed easiermotionthroughthetextandevenselectionoftextwouldbeveryuseful. TheintroductionofthemousewiththeAppleLisacomputerin1983really startedthecomputerpublicontheroadtorelyingonthemouseforroutine computertasks.??Howdoesthemousework?Wehavetostartatthe bottomsothinkupsidedownfornow.Itallstartswithmouseball.Asthe mouseballinthebottomofthemouserollsoverthemousepaditpresses againstandturnstwoshafts.Theshaftsareconnectedtowheelswithseveral smallholesinthem.Thewheelshaveapairofsmallelectroniclight-emitting devicescalledlightemittingdiodesLEDmountedoneitherside.OneLEDsends alightbeamtotheLEDontheotherside.Asthewheelsspinandaholerotates bythelightbeamgetsthroughtotheLEDontheotherside.Butamomentlater thelightbeamisblockeduntilthenextholeisinplace.TheLEDdetectsa changingpatternoflightconvertsthepatternintoanelectronicsignaland sendsthesignaltothecomputerthroughwiresinacablethatgoesoutthe mousebody.Thiscableisthetailthathelpsgivethemouseitsname.The computerinterpretsthesignaltotellitwheretopositionthecursoronthe computerscreen.??Sofarwehaveonlydiscussedthebasic computermousethatmostofyouprobablyhaveorhaveused.Oneproblemwith thisdesignisthatthemousegetsdirtyastheballrollsoverthesurfaceand picksupthedirt.Eventuallyyouhavetocleanyourmouse.Theneweroptical miceavoidthisproblembyhavingnomoving parts.Accordingtotheauthorgeneralcomputerusersneednotknowhowthecomputermousewasinvented.
{{*HTML*}}{{B}}第三篇{{/B}} BlackHolesTriggerStarsto Self-Destruct??Scientistshavelongunderstood thatsupermassiveblackholesweighingmillionsorbillionsofsunscantear apartstarsthatcometooclose.Theblackhole’sgravitypullsharderonthe nearestpartofthestaranimbalancethatpulls’thestarapartoveraperiod ofminutesorhoursonceitgetscloseenough.??Scientistssay thisunevenpullingisnottheonlyhazardfacingthestar.Thestrainofthese unbalancedforcescanalsotriggeranuclearexplosionpowerfulenoughto destroythestarfromwithin.MatthieuBrassartandJean-PierreLuminetofthe ObservatoiredeParisinMeudonFrancelcarriedoutcomputersimulationsof thefinalmomentsofsuchanunfortunatestar’slifeasitveeredtowardsa supermassiveblackhole.??Whenthestargetscloseenoughthe unevenforcesflattenitintoapancakeshape.Somepreviousstudieshad suggestedthisflatteningwouldincreasethedensityandtemperatureinsidethe starenoughtotriggerintensenuclearreactionsthatwouldtearitapart.But otherstudieshadsuggestedthatthepicturewouldbecomplicatedbyshockwaves generatedduringtheflatteningprocessandthatnonuclearexplosionshould occur.??Thenewsimulationsinvestigatedtheeffectsofshock wavesindetailandfoundthatevenwhentheireffectsareincludedthe conditionsfavoranuclearexplosion.Therewillbeanexplosionofthestar—it willbecompletelydestroyedBrassartsays.Althoughtheexplosionobliterates thestaritsavessomeofthestar’smatterfrombeingdevouredbytheblack hole.Theexplosionispowerfulenoughtohurlmuchofthestar’smatteroutof theblackhole’sreachhesays.??Thedevouringofstarsbyblack holesmayalreadyhavebeenobservedalthoughatamuchlaterstage.Itis thoughtthatseveralmonthsaftertheeventthatripsthestarapartitsmatter startsswirlingintotheholeitself.Itheatsupasitdoessoreleasing ultravioletlightandX-rays.??Ifstarsdisruptednearblack holesreallydoexplodethentheycouldinprincipleallowtheseeventstobe detectedatamuchearlierstagesaysJulesHalpernofColumbiaUniversityin NewYorkUS2.Itmaymakeitpossibletoseethedisruptionofthatstar immediatelyifitgetshotenoughhesays.??Brassartagrees. PerhapsitcanbeobservedintheX-raysandgammaraysbutit’ssomething thatneedstobemorestudiedhesays.SupernovaresearcherChrisFryerofthe LosAlamosNationalLaboratoryinLosAlamosNewMexicoUS3saysthedeaths ofthesestarsaredifficulttosimulateandheisnotsurewhetherthe researchershaveproventheircasethattheyexplodeinthe process.Somethingdestructivecouldhappentoastarthatgetstooclosetoablackhole.WhichofthefollowingdestructivestatementsisNOTmentionedinthepassage?
{{*HTML*}}下面的短文有15处空白请根据短文内容为每处空白确定1个最佳选项 HaveYouFilledUpTheForm?? ?OfallthingsintheworldImostdislikefillingupforms.InfactI havea{{U}}?51?{{/U}}horrorofit.Applyingforalivinglicense {{U}}?52?{{/U}}foraneveningcoursebookingaholiday abroad—everythingnowadaysseemtoinvolve{{U}}?53?{{/U}}information aboutone’spersonallifeandhabitsthathaslittleornothingtodowiththe matter{{U}}?54?{{/U}}hand.Whenapplyingforajobitmaybe {{U}}?55?{{/U}}someobscureinteresttoa{{U}}?56?{{/U}} employertolearnthatIcollectstamporhadmeaslesasachildbutwhyshould heconceivablywanttoknowthatmyfatherwasatobacconistwhodiedin 1988???TheauthoritiesWho{{U}}?57?{{/U}}onetofill upformsfrequentlydemandanswerstoquestionsthatonewouldhesitatetoput {{U}}?58?{{/U}}one’sintimatefriends.Theworstofitisthatwhen {{U}}?59?{{/U}}withsuchquestionsmymindgoesblankHaveIever sufferedfromaseriousillness?MymotheralwaysassuredmeIwasdelicate. ?DoIsufferfromanypersonaldefects?WellIwearcontactlensesandmy upperteetharenotmyownbutperhapstheworddefects{{U}}?60 ?{{/U}}tomycharacter.Am!supposedto{{U}}?61?{{/U}}thatI likegamblingandfinditdifficulttogetupinthemorning?Bothofthemare true.??OfallIthinkjobapplicationsaretheworst education—previousexperience—postheld—give{{U}}?62?{{/U}}Terrified bytheawfulwarningaboutgivingfalse{{U}}?63?{{/U}}whichappearat thebottomoftheformIstruggletorememberwhatexamsIpassedandhowlong Iworkedforwhatfirms.{{U}}?64?{{/U}}hardItrytherealwaysseems tobeayearortwoforwhichIcannotsatisfactorilyaccountandwhichIam certainifleft{{U}}?65?{{/U}}thatwillgivetheimpressionthatI wasinprisonorengagedinsomeoccupationtoodubiousto mention.
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{{*HTML*}}??A.tosendgoodstovariouspartsoftheworld? ?B.atanytimeduringtheyear??C.hasgreatlypromoted trade??D.isitpossibletoproduceonalargescale? ?E.thetransportofgoods??F.itispossibletoproduceon alargescaleThedevelopmentofmodemmeansoftransport______.
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{{*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? ? TransportandTrade??1 ?Transportisoneoftheaidstotrade.Bymovinggoodsfromplaceswhere theyareplentifultoplaceswheretheyarescarcetransportaddstotheir value.Themoreeasilygoodscanbebroughtoverthedistancethatseparates producerandconsumerthebetterfortrade.Whentherewerenorailwaysno goodroadsnocanalsandonlysmallsailingshipstradewasonasmall scale.??2?Thegreatadvancesmadeintransportduringthe lasttwohundredyearswereaccompaniedbyabigincreaseintrade.Biggerand fastershipsenabledatradeinmeattodevelopbetweenBritainandNewZealand forinstance.Quickertransportmakespossiblemass-productionandbigbusiness drawingsuppliesfromandsellinggoodstoallpartsoftheglobe.Big factoriescouldnotexistwithouttransporttocarrythelargenumberofworkers theyneedtoandfromtheirhomes.Bigcitystorescouldnothavedeveloped unlesscustomerscouldtraveleasilyfromthesuburbsandgoodsdeliveredto theirhomes.Bigcitiescouldnotsurviveunlessfoodcouldbebroughtfroma distance.??3?Transportalsopreventswaste.Muchofthe fishlandedattheportswouldbewastedifitcouldnotbetakenquicklyto inlandtowns.Transporthasgivenusamuchgreatervarietyoffoodsandgoods sincewenolongerhavetoliveonwhatisproducedlocally.Foodswhichatone timecouldbeobtainedonlyduringapartoftheyearcannowbeobtainedall throughtheyear.Transporthasraisedthestandardofliving.??4 ?Bymovingfuelrawmaterialsandevenpowerasforexamplethrough electriccablestransporthasledtotheestablishmentofindustriesandtrade inareaswheretheywouldhavebeenimpossiblebefore.Districtsandcountries canconcentrateonmakingthingswhichtheycandobetterandmorecheaplythan othersandcanthenexchangethemwithoneanother.Thecheaperandquicker transportbecomesthelongerthedistanceoverwhichgoodscanprofitablybe carried.Countrieswithpoortransporthavealowerstandardof living.??5?Commercerequiresnotonlythemovingofgoods andpeoplebutalsothecarryingofmessagesandinformation.Meansof communicationliketelephonescablesandradiosendinformationaboutprices suppliesandchangingconditionsindifferentpartsoftheworld.Inthisway advancedcommunicationsystemsalsohelptodeveloptrade. ??A.Higherlivingstandard??B.Importanceof transportintrade??C.Variousmeansoftransport? ?D.Birthoftransport-relatedindustriesandtrade??E.Role ofinformationintrade??F.PublictransportationParagraph4______.
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{{*HTML*}}下面的短文有15处空白请根据短文内容为每处空白确定1个最佳选项 HaveYouFilledUpTheForm?? ?OfallthingsintheworldImostdislikefillingupforms.InfactI havea{{U}}?51?{{/U}}horrorofit.Applyingforalivinglicense {{U}}?52?{{/U}}foraneveningcoursebookingaholiday abroad—everythingnowadaysseemtoinvolve{{U}}?53?{{/U}}information aboutone’spersonallifeandhabitsthathaslittleornothingtodowiththe matter{{U}}?54?{{/U}}hand.Whenapplyingforajobitmaybe {{U}}?55?{{/U}}someobscureinteresttoa{{U}}?56?{{/U}} employertolearnthatIcollectstamporhadmeaslesasachildbutwhyshould heconceivablywanttoknowthatmyfatherwasatobacconistwhodiedin 1988???TheauthoritiesWho{{U}}?57?{{/U}}onetofill upformsfrequentlydemandanswerstoquestionsthatonewouldhesitatetoput {{U}}?58?{{/U}}one’sintimatefriends.Theworstofitisthatwhen {{U}}?59?{{/U}}withsuchquestionsmymindgoesblankHaveIever sufferedfromaseriousillness?MymotheralwaysassuredmeIwasdelicate. ?DoIsufferfromanypersonaldefects?WellIwearcontactlensesandmy upperteetharenotmyownbutperhapstheworddefects{{U}}?60 ?{{/U}}tomycharacter.Am!supposedto{{U}}?61?{{/U}}thatI likegamblingandfinditdifficulttogetupinthemorning?Bothofthemare true.??OfallIthinkjobapplicationsaretheworst education—previousexperience—postheld—give{{U}}?62?{{/U}}Terrified bytheawfulwarningaboutgivingfalse{{U}}?63?{{/U}}whichappearat thebottomoftheformIstruggletorememberwhatexamsIpassedandhowlong Iworkedforwhatfirms.{{U}}?64?{{/U}}hardItrytherealwaysseems tobeayearortwoforwhichIcannotsatisfactorilyaccountandwhichIam certainifleft{{U}}?65?{{/U}}thatwillgivetheimpressionthatI wasinprisonorengagedinsomeoccupationtoodubiousto mention.
{{*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 ComputerMouse??The basiccomputermouseisanamazinglycleverinventionwitharelativelysimple designthatallowsustopointatthingsonthecomputeranditisvery productive.Thinkofallthethingsyoucandowithamouselikeselectingtext forcopyingandpastingdrawingandevenscrollingonthepagewiththenewer micewiththewheel.Mostofususethecomputermousedailywithoutstoppingto thinkhowitworksuntilitgetsdirtyandwehavetolearnhowtocleanit.We learntopointatthingbeforewelearntospeaksothemouseisaverynatural pointingdevice.Othercomputerpointingdevicesincludelightpensgraphics tabletsandtouchscreenbutthemouseisstillourworkhorse.? ?Thecomputermousewasinventedin1964byDouglasEnglehartofStanford University.Ascomputerscreensbecamepopularandarrowkeyswereusedtomore aroundabodyoftextitbecameclearthatapointingdevicethatallowed easiermotionthroughthetextandevenselectionoftextwouldbeveryuseful. TheintroductionofthemousewiththeAppleLisacomputerin1983really startedthecomputerpublicontheroadtorelyingonthemouseforroutine computertasks.??Howdoesthemousework?Wehavetostartatthe bottomsothinkupsidedownfornow.Itallstartswithmouseball.Asthe mouseballinthebottomofthemouserollsoverthemousepaditpresses againstandturnstwoshafts.Theshaftsareconnectedtowheelswithseveral smallholesinthem.Thewheelshaveapairofsmallelectroniclight-emitting devicescalledlightemittingdiodesLEDmountedoneitherside.OneLEDsends alightbeamtotheLEDontheotherside.Asthewheelsspinandaholerotates bythelightbeamgetsthroughtotheLEDontheotherside.Butamomentlater thelightbeamisblockeduntilthenextholeisinplace.TheLEDdetectsa changingpatternoflightconvertsthepatternintoanelectronicsignaland sendsthesignaltothecomputerthroughwiresinacablethatgoesoutthe mousebody.Thiscableisthetailthathelpsgivethemouseitsname.The computerinterpretsthesignaltotellitwheretopositionthecursoronthe computerscreen.??Sofarwehaveonlydiscussedthebasic computermousethatmostofyouprobablyhaveorhaveused.Oneproblemwith thisdesignisthatthemousegetsdirtyastheballrollsoverthesurfaceand picksupthedirt.Eventuallyyouhavetocleanyourmouse.Theneweroptical miceavoidthisproblembyhavingnomoving parts.ThekeycomponentsofacomputermousearethetwoLEDs.
{{*HTML*}}下面的短文有15处空白请根据短文内容为每处空白确定1个最佳选项 HaveYouFilledUpTheForm?? ?OfallthingsintheworldImostdislikefillingupforms.InfactI havea{{U}}?51?{{/U}}horrorofit.Applyingforalivinglicense {{U}}?52?{{/U}}foraneveningcoursebookingaholiday abroad—everythingnowadaysseemtoinvolve{{U}}?53?{{/U}}information aboutone’spersonallifeandhabitsthathaslittleornothingtodowiththe matter{{U}}?54?{{/U}}hand.Whenapplyingforajobitmaybe {{U}}?55?{{/U}}someobscureinteresttoa{{U}}?56?{{/U}} employertolearnthatIcollectstamporhadmeaslesasachildbutwhyshould heconceivablywanttoknowthatmyfatherwasatobacconistwhodiedin 1988???TheauthoritiesWho{{U}}?57?{{/U}}onetofill upformsfrequentlydemandanswerstoquestionsthatonewouldhesitatetoput {{U}}?58?{{/U}}one’sintimatefriends.Theworstofitisthatwhen {{U}}?59?{{/U}}withsuchquestionsmymindgoesblankHaveIever sufferedfromaseriousillness?MymotheralwaysassuredmeIwasdelicate. ?DoIsufferfromanypersonaldefects?WellIwearcontactlensesandmy upperteetharenotmyownbutperhapstheworddefects{{U}}?60 ?{{/U}}tomycharacter.Am!supposedto{{U}}?61?{{/U}}thatI likegamblingandfinditdifficulttogetupinthemorning?Bothofthemare true.??OfallIthinkjobapplicationsaretheworst education—previousexperience—postheld—give{{U}}?62?{{/U}}Terrified bytheawfulwarningaboutgivingfalse{{U}}?63?{{/U}}whichappearat thebottomoftheformIstruggletorememberwhatexamsIpassedandhowlong Iworkedforwhatfirms.{{U}}?64?{{/U}}hardItrytherealwaysseems tobeayearortwoforwhichIcannotsatisfactorilyaccountandwhichIam certainifleft{{U}}?65?{{/U}}thatwillgivetheimpressionthatI wasinprisonorengagedinsomeoccupationtoodubiousto mention.
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{{*HTML*}}{{B}}第二篇{{/B}} U.S.ScientistsConfirmWateron Mars??NASAscientistssaidthatMarswascovered oncebyvastlakesflowingriversandavarietyofotherwetenvironmentsthat hadthepotentialtosupportlife.??Laboratorytestsaboard NASA’sPhoenixMarsLanderhaveidentifiedwaterinasoilsample.Thelander’s roboticarmdeliveredthesampleWednesdaytoaninstrumentthatidentifies vaporsproducedbytheheatingofsamples.??Wehavewatersaid WilliamBoyntonoftheUniversityofArizonaleadscientistfortheThermaland Evolved-GasAnalyzerorTEGA.ThisisthefirsttimeMartianwaterhasbeen touchedandtasted.??Theroboticarmisacriticalpartofthe PhoenixMarsmission.Itisneededtotrenchintotheicylayersofnorthern polarMarsanddeliversamplestoinstrumentsthatwillanalyzewhatMarsis madeofwhatitswaterislikeandwhetheritisorhaseverbeenapossible habitatforlife.??Thesoilsamplecamefromatrench approximately2inchesdeep.Whentheroboticarmfirstreachedthatdepthit hitahardlayeroffrozensoil.Twoattemptstodeliversamplesoficysoilon dayswhenfreshmaterialwasexposedwerefoiledwhenthesamplesbecamestuck insidethescoop.MostofthematerialinWednesday’ssamplehadbeenexposedto theairfortwodayslettingsomeofthewaterinthesamplevaporizeawayand makingthesoileasiertohandle.??Marsisgivingussome surprisessaidPhoenixprincipalinvestigatorPeterSmithoftheUniversityof Arizona.We’reexcitedbecausesurprisesarewherediscoveriescomefrom.One surpriseishowthesoilisbehaving.Theice-richlayerssticktothescoop whenpoisedinthesunabovethedeckdifferentfromwhatweexpectedfromall theMarssimulationtestingwe’vedonesofar.??Sincelanding onMay25Phoenixhasbeenstudyingsoilwith.achemistrylabTEGAa microscopeaconductivityprobeandcameras.Thescienceteamistryingto determinewhetherthewatericeeverthawsenoughtobeavailableforbiology andifcarbon-containingchemicalsandotherrawmaterialsforlifeare present.??Themissionisexaminingtheskyaswellastheground. ACanadianinstrumentisusingalaserbeamtostudydustandclouds overhead.??It’sa30-wattlightbulbgivingusalasershowon MarssaidVictoriaHipkinoftheCanadianSpaceAgency.??A full-circlecolorpanoramaofPhoenix’ssurroundingsalsohasbeencompletedby thespacecraft.??Thedetailsandpatternsweseeintheground showanice-dominatedterrainasfarastheeyecanseesaidMarkLemmonof TexasA&MUniversityleadscientistforPhoenix’sSurfaceStereoImager camera.Theyhelpusplanmeasurementswe’remakingwithinreachoftherobotic armandinterpretthosemeasurementsonawiderscale. Whydidthefirsttwoattemptstodeliversamplesfail?
{{*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? ? TransportandTrade??1 ?Transportisoneoftheaidstotrade.Bymovinggoodsfromplaceswhere theyareplentifultoplaceswheretheyarescarcetransportaddstotheir value.Themoreeasilygoodscanbebroughtoverthedistancethatseparates producerandconsumerthebetterfortrade.Whentherewerenorailwaysno goodroadsnocanalsandonlysmallsailingshipstradewasonasmall scale.??2?Thegreatadvancesmadeintransportduringthe lasttwohundredyearswereaccompaniedbyabigincreaseintrade.Biggerand fastershipsenabledatradeinmeattodevelopbetweenBritainandNewZealand forinstance.Quickertransportmakespossiblemass-productionandbigbusiness drawingsuppliesfromandsellinggoodstoallpartsoftheglobe.Big factoriescouldnotexistwithouttransporttocarrythelargenumberofworkers theyneedtoandfromtheirhomes.Bigcitystorescouldnothavedeveloped unlesscustomerscouldtraveleasilyfromthesuburbsandgoodsdeliveredto theirhomes.Bigcitiescouldnotsurviveunlessfoodcouldbebroughtfroma distance.??3?Transportalsopreventswaste.Muchofthe fishlandedattheportswouldbewastedifitcouldnotbetakenquicklyto inlandtowns.Transporthasgivenusamuchgreatervarietyoffoodsandgoods sincewenolongerhavetoliveonwhatisproducedlocally.Foodswhichatone timecouldbeobtainedonlyduringapartoftheyearcannowbeobtainedall throughtheyear.Transporthasraisedthestandardofliving.??4 ?Bymovingfuelrawmaterialsandevenpowerasforexamplethrough electriccablestransporthasledtotheestablishmentofindustriesandtrade inareaswheretheywouldhavebeenimpossiblebefore.Districtsandcountries canconcentrateonmakingthingswhichtheycandobetterandmorecheaplythan othersandcanthenexchangethemwithoneanother.Thecheaperandquicker transportbecomesthelongerthedistanceoverwhichgoodscanprofitablybe carried.Countrieswithpoortransporthavealowerstandardof living.??5?Commercerequiresnotonlythemovingofgoods andpeoplebutalsothecarryingofmessagesandinformation.Meansof communicationliketelephonescablesandradiosendinformationaboutprices suppliesandchangingconditionsindifferentpartsoftheworld.Inthisway advancedcommunicationsystemsalsohelptodeveloptrade. ??A.Higherlivingstandard??B.Importanceof transportintrade??C.Variousmeansoftransport? ?D.Birthoftransport-relatedindustriesandtrade??E.Role ofinformationintrade??F.PublictransportationParagraph2______.
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{{*HTML*}}下面的短文有5处空白短文后有6个句子其中5个取自短文请根据短文内容将其分别放回原有位置以恢复文章原貌 SoWhat??Amanwas cominghomelateonenight—aboutthreeo’clockinthemorning—whenhesawaguy standinginfrontofahousewithahorse.Themanwiththehorsestoppedhim andsaid{{U}}?46?{{/U}}??Wellwhatwouldyoulikeme todo?askedthepasser-by.??Iwantyoutohelpmegetthis horseupstairs.??Why???{{U}}?47 ?{{/U}}Ihaven’tgottimetoexplain.Wouldyoujusthelpme please???Togethertheypushedthehorseupthestepsandinto thehallwaythenupthreeflightsofstairsandintotheman’sflat.Whenthey gotinsidethemanwiththehorsesaid{{U}}?48?{{/U}}? ?Fearfulthathemightbedealingwithamadmanthepasser-byhelpedthe manliftoneforeleg前腿thenthesecondforelegthenonehind后面的legthen thesecondhindlegandtherestoodthehorseinthebathtub.? ?Nowsaidthepasser-bywouldyoumindtellingmewhatthisisall about???WellsaidthemanwiththehorseI’lltellyou. I’vegotabrother-in-lawwholivesherewithme.{{U}}?49?{{/U}}I can’ttellhimanything.NomatterwhatItellhimhesays’Sowhat!’No matterwhatinformationIgivehimhesays’Sowhat!’He’soutlate tonight.{{U}}?50?{{/U}}Iwanthimtocomeupstairsopenthedoor takeoffhisclothesputonhispajamasgointothebathroomthencome runningoutyelling’Sol!Sol!There’sahorseitthebathtub!’andI’ll say’Sowhat!’??A.WellIcan’ttellyouatthe moment.??B.Heisaverysmartfellow.??C.Theman withthehorsegotinside.??D.Brothercouldyougivemeahand here???E.He’llbehomeaboutfouro’clock.??F. Nowwillyouhelpmegetthehorsewithhisfeetinthebathtub?
{{*HTML*}}下面的短文有15处空白请根据短文内容为每处空白确定1个最佳选项 HaveYouFilledUpTheForm?? ?OfallthingsintheworldImostdislikefillingupforms.InfactI havea{{U}}?51?{{/U}}horrorofit.Applyingforalivinglicense {{U}}?52?{{/U}}foraneveningcoursebookingaholiday abroad—everythingnowadaysseemtoinvolve{{U}}?53?{{/U}}information aboutone’spersonallifeandhabitsthathaslittleornothingtodowiththe matter{{U}}?54?{{/U}}hand.Whenapplyingforajobitmaybe {{U}}?55?{{/U}}someobscureinteresttoa{{U}}?56?{{/U}} employertolearnthatIcollectstamporhadmeaslesasachildbutwhyshould heconceivablywanttoknowthatmyfatherwasatobacconistwhodiedin 1988???TheauthoritiesWho{{U}}?57?{{/U}}onetofill upformsfrequentlydemandanswerstoquestionsthatonewouldhesitatetoput {{U}}?58?{{/U}}one’sintimatefriends.Theworstofitisthatwhen {{U}}?59?{{/U}}withsuchquestionsmymindgoesblankHaveIever sufferedfromaseriousillness?MymotheralwaysassuredmeIwasdelicate. ?DoIsufferfromanypersonaldefects?WellIwearcontactlensesandmy upperteetharenotmyownbutperhapstheworddefects{{U}}?60 ?{{/U}}tomycharacter.Am!supposedto{{U}}?61?{{/U}}thatI likegamblingandfinditdifficulttogetupinthemorning?Bothofthemare true.??OfallIthinkjobapplicationsaretheworst education—previousexperience—postheld—give{{U}}?62?{{/U}}Terrified bytheawfulwarningaboutgivingfalse{{U}}?63?{{/U}}whichappearat thebottomoftheformIstruggletorememberwhatexamsIpassedandhowlong Iworkedforwhatfirms.{{U}}?64?{{/U}}hardItrytherealwaysseems tobeayearortwoforwhichIcannotsatisfactorilyaccountandwhichIam certainifleft{{U}}?65?{{/U}}thatwillgivetheimpressionthatI wasinprisonorengagedinsomeoccupationtoodubiousto mention.
{{*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 ComputerMouse??The basiccomputermouseisanamazinglycleverinventionwitharelativelysimple designthatallowsustopointatthingsonthecomputeranditisvery productive.Thinkofallthethingsyoucandowithamouselikeselectingtext forcopyingandpastingdrawingandevenscrollingonthepagewiththenewer micewiththewheel.Mostofususethecomputermousedailywithoutstoppingto thinkhowitworksuntilitgetsdirtyandwehavetolearnhowtocleanit.We learntopointatthingbeforewelearntospeaksothemouseisaverynatural pointingdevice.Othercomputerpointingdevicesincludelightpensgraphics tabletsandtouchscreenbutthemouseisstillourworkhorse.? ?Thecomputermousewasinventedin1964byDouglasEnglehartofStanford University.Ascomputerscreensbecamepopularandarrowkeyswereusedtomore aroundabodyoftextitbecameclearthatapointingdevicethatallowed easiermotionthroughthetextandevenselectionoftextwouldbeveryuseful. TheintroductionofthemousewiththeAppleLisacomputerin1983really startedthecomputerpublicontheroadtorelyingonthemouseforroutine computertasks.??Howdoesthemousework?Wehavetostartatthe bottomsothinkupsidedownfornow.Itallstartswithmouseball.Asthe mouseballinthebottomofthemouserollsoverthemousepaditpresses againstandturnstwoshafts.Theshaftsareconnectedtowheelswithseveral smallholesinthem.Thewheelshaveapairofsmallelectroniclight-emitting devicescalledlightemittingdiodesLEDmountedoneitherside.OneLEDsends alightbeamtotheLEDontheotherside.Asthewheelsspinandaholerotates bythelightbeamgetsthroughtotheLEDontheotherside.Butamomentlater thelightbeamisblockeduntilthenextholeisinplace.TheLEDdetectsa changingpatternoflightconvertsthepatternintoanelectronicsignaland sendsthesignaltothecomputerthroughwiresinacablethatgoesoutthe mousebody.Thiscableisthetailthathelpsgivethemouseitsname.The computerinterpretsthesignaltotellitwheretopositionthecursoronthe computerscreen.??Sofarwehaveonlydiscussedthebasic computermousethatmostofyouprobablyhaveorhaveused.Oneproblemwith thisdesignisthatthemousegetsdirtyastheballrollsoverthesurfaceand picksupthedirt.Eventuallyyouhavetocleanyourmouse.Theneweroptical miceavoidthisproblembyhavingnomoving parts.ThemostdurablecomputermiceonsalearetheIBMones.
Thousandsofpeople{{U}}perished{{/U}}inthestorm.
{{*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定1个最佳选项{{B}}第一篇{{/B}} HowtoStartaSmallBusinessinthe US??PeoplefromothercountriesoftentakeAmerica asthelandofopportunity.Americanstoobelievethatthecountrygivesno endofchancestothosewhowanttoopentheirownbusinesses.Todaymany Americansarestilltryinghardtobecomesmallbusinesspeoplealthoughonly oneoutoftworemainsinoperationafterthefirsttwoyears.? ?Manypeoplestarttheirsmallbusinessesforthewrongreasons.Theywant togetawayfromthepaperworkoftheirpresentjobsortoexchangethe responsibilityoftheirpresentjobsforfreelifestyles.Butmorenotless paperworkandresponsibilitycomewithownershipofasmallbusiness.? ?ThomasistheownerofthenewsmagazineMotherEarthwhichisnowquite successful.Hesaysthathehadtoworksixtyhourswithoutstoppingwhenhewas tryingtobringoutthefirstissue.??Thomashadwaitedforyears afterhecameupwiththeideaforMotherEarth.Duringthattimehecollected asmuchinformationashecouldabouthisbusiness.Heborrowedbooksfromthe librarytalkedtosuccessfulpeopleinthefieldandbeganplanningcarefully theamountofmoneyandthekindsandnumbersofsupplieshewouldneed.Whenhe finallyopenedwithacapitalof$1500hesetuphisofficeinthekitchen andhisprintingpressinthegarage.Owingtohisdevotion投入tobusinesshis talentandhisskillinmanagementMotherEarthnowhasacirculation发行量of 300000.??NotallsmallbusinessesaredoingasfineasMother Earthas50%ofthe450000thatstartinAmericaeveryyearfail.Still95%of businessesintheUScanbecalledsmall.Altogetherthesebusinessesamount to40%ofAmerica’sgrossnational product国民生产总值.AccordingtothepassagewhichofthefollowingistrueofthesmallbusinessesintheU.S.?
{{*HTML*}}{{B}}第三篇{{/B}} BlackHolesTriggerStarsto Self-Destruct??Scientistshavelongunderstood thatsupermassiveblackholesweighingmillionsorbillionsofsunscantear apartstarsthatcometooclose.Theblackhole’sgravitypullsharderonthe nearestpartofthestaranimbalancethatpulls’thestarapartoveraperiod ofminutesorhoursonceitgetscloseenough.??Scientistssay thisunevenpullingisnottheonlyhazardfacingthestar.Thestrainofthese unbalancedforcescanalsotriggeranuclearexplosionpowerfulenoughto destroythestarfromwithin.MatthieuBrassartandJean-PierreLuminetofthe ObservatoiredeParisinMeudonFrancelcarriedoutcomputersimulationsof thefinalmomentsofsuchanunfortunatestar’slifeasitveeredtowardsa supermassiveblackhole.??Whenthestargetscloseenoughthe unevenforcesflattenitintoapancakeshape.Somepreviousstudieshad suggestedthisflatteningwouldincreasethedensityandtemperatureinsidethe starenoughtotriggerintensenuclearreactionsthatwouldtearitapart.But otherstudieshadsuggestedthatthepicturewouldbecomplicatedbyshockwaves generatedduringtheflatteningprocessandthatnonuclearexplosionshould occur.??Thenewsimulationsinvestigatedtheeffectsofshock wavesindetailandfoundthatevenwhentheireffectsareincludedthe conditionsfavoranuclearexplosion.Therewillbeanexplosionofthestar—it willbecompletelydestroyedBrassartsays.Althoughtheexplosionobliterates thestaritsavessomeofthestar’smatterfrombeingdevouredbytheblack hole.Theexplosionispowerfulenoughtohurlmuchofthestar’smatteroutof theblackhole’sreachhesays.??Thedevouringofstarsbyblack holesmayalreadyhavebeenobservedalthoughatamuchlaterstage.Itis thoughtthatseveralmonthsaftertheeventthatripsthestarapartitsmatter startsswirlingintotheholeitself.Itheatsupasitdoessoreleasing ultravioletlightandX-rays.??Ifstarsdisruptednearblack holesreallydoexplodethentheycouldinprincipleallowtheseeventstobe detectedatamuchearlierstagesaysJulesHalpernofColumbiaUniversityin NewYorkUS2.Itmaymakeitpossibletoseethedisruptionofthatstar immediatelyifitgetshotenoughhesays.??Brassartagrees. PerhapsitcanbeobservedintheX-raysandgammaraysbutit’ssomething thatneedstobemorestudiedhesays.SupernovaresearcherChrisFryerofthe LosAlamosNationalLaboratoryinLosAlamosNewMexicoUS3saysthedeaths ofthesestarsaredifficulttosimulateandheisnotsurewhetherthe researchershaveproventheircasethattheyexplodeinthe process.AccordingtothecontexttheworddisruptioninParagraph6means:______.
{{*HTML*}}{{B}}第三篇{{/B}} BlackHolesTriggerStarsto Self-Destruct??Scientistshavelongunderstood thatsupermassiveblackholesweighingmillionsorbillionsofsunscantear apartstarsthatcometooclose.Theblackhole’sgravitypullsharderonthe nearestpartofthestaranimbalancethatpulls’thestarapartoveraperiod ofminutesorhoursonceitgetscloseenough.??Scientistssay thisunevenpullingisnottheonlyhazardfacingthestar.Thestrainofthese unbalancedforcescanalsotriggeranuclearexplosionpowerfulenoughto destroythestarfromwithin.MatthieuBrassartandJean-PierreLuminetofthe ObservatoiredeParisinMeudonFrancelcarriedoutcomputersimulationsof thefinalmomentsofsuchanunfortunatestar’slifeasitveeredtowardsa supermassiveblackhole.??Whenthestargetscloseenoughthe unevenforcesflattenitintoapancakeshape.Somepreviousstudieshad suggestedthisflatteningwouldincreasethedensityandtemperatureinsidethe starenoughtotriggerintensenuclearreactionsthatwouldtearitapart.But otherstudieshadsuggestedthatthepicturewouldbecomplicatedbyshockwaves generatedduringtheflatteningprocessandthatnonuclearexplosionshould occur.??Thenewsimulationsinvestigatedtheeffectsofshock wavesindetailandfoundthatevenwhentheireffectsareincludedthe conditionsfavoranuclearexplosion.Therewillbeanexplosionofthestar—it willbecompletelydestroyedBrassartsays.Althoughtheexplosionobliterates thestaritsavessomeofthestar’smatterfrombeingdevouredbytheblack hole.Theexplosionispowerfulenoughtohurlmuchofthestar’smatteroutof theblackhole’sreachhesays.??Thedevouringofstarsbyblack holesmayalreadyhavebeenobservedalthoughatamuchlaterstage.Itis thoughtthatseveralmonthsaftertheeventthatripsthestarapartitsmatter startsswirlingintotheholeitself.Itheatsupasitdoessoreleasing ultravioletlightandX-rays.??Ifstarsdisruptednearblack holesreallydoexplodethentheycouldinprincipleallowtheseeventstobe detectedatamuchearlierstagesaysJulesHalpernofColumbiaUniversityin NewYorkUS2.Itmaymakeitpossibletoseethedisruptionofthatstar immediatelyifitgetshotenoughhesays.??Brassartagrees. PerhapsitcanbeobservedintheX-raysandgammaraysbutit’ssomething thatneedstobemorestudiedhesays.SupernovaresearcherChrisFryerofthe LosAlamosNationalLaboratoryinLosAlamosNewMexicoUS3saysthedeaths ofthesestarsaredifficulttosimulateandheisnotsurewhetherthe researchershaveproventheircasethattheyexplodeinthe process.AccordingtothefourthparagraphwhichofthefollowingisNOTtrue?
{{*HTML*}}下面的短文有15处空白请根据短文内容为每处空白确定1个最佳选项 HaveYouFilledUpTheForm?? ?OfallthingsintheworldImostdislikefillingupforms.InfactI havea{{U}}?51?{{/U}}horrorofit.Applyingforalivinglicense {{U}}?52?{{/U}}foraneveningcoursebookingaholiday abroad—everythingnowadaysseemtoinvolve{{U}}?53?{{/U}}information aboutone’spersonallifeandhabitsthathaslittleornothingtodowiththe matter{{U}}?54?{{/U}}hand.Whenapplyingforajobitmaybe {{U}}?55?{{/U}}someobscureinteresttoa{{U}}?56?{{/U}} employertolearnthatIcollectstamporhadmeaslesasachildbutwhyshould heconceivablywanttoknowthatmyfatherwasatobacconistwhodiedin 1988???TheauthoritiesWho{{U}}?57?{{/U}}onetofill upformsfrequentlydemandanswerstoquestionsthatonewouldhesitatetoput {{U}}?58?{{/U}}one’sintimatefriends.Theworstofitisthatwhen {{U}}?59?{{/U}}withsuchquestionsmymindgoesblankHaveIever sufferedfromaseriousillness?MymotheralwaysassuredmeIwasdelicate. ?DoIsufferfromanypersonaldefects?WellIwearcontactlensesandmy upperteetharenotmyownbutperhapstheworddefects{{U}}?60 ?{{/U}}tomycharacter.Am!supposedto{{U}}?61?{{/U}}thatI likegamblingandfinditdifficulttogetupinthemorning?Bothofthemare true.??OfallIthinkjobapplicationsaretheworst education—previousexperience—postheld—give{{U}}?62?{{/U}}Terrified bytheawfulwarningaboutgivingfalse{{U}}?63?{{/U}}whichappearat thebottomoftheformIstruggletorememberwhatexamsIpassedandhowlong Iworkedforwhatfirms.{{U}}?64?{{/U}}hardItrytherealwaysseems tobeayearortwoforwhichIcannotsatisfactorilyaccountandwhichIam certainifleft{{U}}?65?{{/U}}thatwillgivetheimpressionthatI wasinprisonorengagedinsomeoccupationtoodubiousto mention.
{{*HTML*}}下面的短文有5处空白短文后有6个句子其中5个取自短文请根据短文内容将其分别放回原有位置以恢复文章原貌 SoWhat??Amanwas cominghomelateonenight—aboutthreeo’clockinthemorning—whenhesawaguy standinginfrontofahousewithahorse.Themanwiththehorsestoppedhim andsaid{{U}}?46?{{/U}}??Wellwhatwouldyoulikeme todo?askedthepasser-by.??Iwantyoutohelpmegetthis horseupstairs.??Why???{{U}}?47 ?{{/U}}Ihaven’tgottimetoexplain.Wouldyoujusthelpme please???Togethertheypushedthehorseupthestepsandinto thehallwaythenupthreeflightsofstairsandintotheman’sflat.Whenthey gotinsidethemanwiththehorsesaid{{U}}?48?{{/U}}? ?Fearfulthathemightbedealingwithamadmanthepasser-byhelpedthe manliftoneforeleg前腿thenthesecondforelegthenonehind后面的legthen thesecondhindlegandtherestoodthehorseinthebathtub.? ?Nowsaidthepasser-bywouldyoumindtellingmewhatthisisall about???WellsaidthemanwiththehorseI’lltellyou. I’vegotabrother-in-lawwholivesherewithme.{{U}}?49?{{/U}}I can’ttellhimanything.NomatterwhatItellhimhesays’Sowhat!’No matterwhatinformationIgivehimhesays’Sowhat!’He’soutlate tonight.{{U}}?50?{{/U}}Iwanthimtocomeupstairsopenthedoor takeoffhisclothesputonhispajamasgointothebathroomthencome runningoutyelling’Sol!Sol!There’sahorseitthebathtub!’andI’ll say’Sowhat!’??A.WellIcan’ttellyouatthe moment.??B.Heisaverysmartfellow.??C.Theman withthehorsegotinside.??D.Brothercouldyougivemeahand here???E.He’llbehomeaboutfouro’clock.??F. Nowwillyouhelpmegetthehorsewithhisfeetinthebathtub?
{{*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定1个最佳选项{{B}}第一篇{{/B}} HowtoStartaSmallBusinessinthe US??PeoplefromothercountriesoftentakeAmerica asthelandofopportunity.Americanstoobelievethatthecountrygivesno endofchancestothosewhowanttoopentheirownbusinesses.Todaymany Americansarestilltryinghardtobecomesmallbusinesspeoplealthoughonly oneoutoftworemainsinoperationafterthefirsttwoyears.? ?Manypeoplestarttheirsmallbusinessesforthewrongreasons.Theywant togetawayfromthepaperworkoftheirpresentjobsortoexchangethe responsibilityoftheirpresentjobsforfreelifestyles.Butmorenotless paperworkandresponsibilitycomewithownershipofasmallbusiness.? ?ThomasistheownerofthenewsmagazineMotherEarthwhichisnowquite successful.Hesaysthathehadtoworksixtyhourswithoutstoppingwhenhewas tryingtobringoutthefirstissue.??Thomashadwaitedforyears afterhecameupwiththeideaforMotherEarth.Duringthattimehecollected asmuchinformationashecouldabouthisbusiness.Heborrowedbooksfromthe librarytalkedtosuccessfulpeopleinthefieldandbeganplanningcarefully theamountofmoneyandthekindsandnumbersofsupplieshewouldneed.Whenhe finallyopenedwithacapitalof$1500hesetuphisofficeinthekitchen andhisprintingpressinthegarage.Owingtohisdevotion投入tobusinesshis talentandhisskillinmanagementMotherEarthnowhasacirculation发行量of 300000.??NotallsmallbusinessesaredoingasfineasMother Earthas50%ofthe450000thatstartinAmericaeveryyearfail.Still95%of businessesintheUScanbecalledsmall.Altogetherthesebusinessesamount to40%ofAmerica’sgrossnational product国民生产总值.HowmanybusinessesintheU.S.canbecalledsmall?
{{*HTML*}}下面的短文有15处空白请根据短文内容为每处空白确定1个最佳选项 HaveYouFilledUpTheForm?? ?OfallthingsintheworldImostdislikefillingupforms.InfactI havea{{U}}?51?{{/U}}horrorofit.Applyingforalivinglicense {{U}}?52?{{/U}}foraneveningcoursebookingaholiday abroad—everythingnowadaysseemtoinvolve{{U}}?53?{{/U}}information aboutone’spersonallifeandhabitsthathaslittleornothingtodowiththe matter{{U}}?54?{{/U}}hand.Whenapplyingforajobitmaybe {{U}}?55?{{/U}}someobscureinteresttoa{{U}}?56?{{/U}} employertolearnthatIcollectstamporhadmeaslesasachildbutwhyshould heconceivablywanttoknowthatmyfatherwasatobacconistwhodiedin 1988???TheauthoritiesWho{{U}}?57?{{/U}}onetofill upformsfrequentlydemandanswerstoquestionsthatonewouldhesitatetoput {{U}}?58?{{/U}}one’sintimatefriends.Theworstofitisthatwhen {{U}}?59?{{/U}}withsuchquestionsmymindgoesblankHaveIever sufferedfromaseriousillness?MymotheralwaysassuredmeIwasdelicate. ?DoIsufferfromanypersonaldefects?WellIwearcontactlensesandmy upperteetharenotmyownbutperhapstheworddefects{{U}}?60 ?{{/U}}tomycharacter.Am!supposedto{{U}}?61?{{/U}}thatI likegamblingandfinditdifficulttogetupinthemorning?Bothofthemare true.??OfallIthinkjobapplicationsaretheworst education—previousexperience—postheld—give{{U}}?62?{{/U}}Terrified bytheawfulwarningaboutgivingfalse{{U}}?63?{{/U}}whichappearat thebottomoftheformIstruggletorememberwhatexamsIpassedandhowlong Iworkedforwhatfirms.{{U}}?64?{{/U}}hardItrytherealwaysseems tobeayearortwoforwhichIcannotsatisfactorilyaccountandwhichIam certainifleft{{U}}?65?{{/U}}thatwillgivetheimpressionthatI wasinprisonorengagedinsomeoccupationtoodubiousto mention.
{{*HTML*}}??A.tosendgoodstovariouspartsoftheworld? ?B.atanytimeduringtheyear??C.hasgreatlypromoted trade??D.isitpossibletoproduceonalargescale? ?E.thetransportofgoods??F.itispossibletoproduceon alargescaleTransporthasmadeitpossibleforpeopletoeatwhateverfoodtheywant______.
{{*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定1个最佳选项{{B}}第一篇{{/B}} HowtoStartaSmallBusinessinthe US??PeoplefromothercountriesoftentakeAmerica asthelandofopportunity.Americanstoobelievethatthecountrygivesno endofchancestothosewhowanttoopentheirownbusinesses.Todaymany Americansarestilltryinghardtobecomesmallbusinesspeoplealthoughonly oneoutoftworemainsinoperationafterthefirsttwoyears.? ?Manypeoplestarttheirsmallbusinessesforthewrongreasons.Theywant togetawayfromthepaperworkoftheirpresentjobsortoexchangethe responsibilityoftheirpresentjobsforfreelifestyles.Butmorenotless paperworkandresponsibilitycomewithownershipofasmallbusiness.? ?ThomasistheownerofthenewsmagazineMotherEarthwhichisnowquite successful.Hesaysthathehadtoworksixtyhourswithoutstoppingwhenhewas tryingtobringoutthefirstissue.??Thomashadwaitedforyears afterhecameupwiththeideaforMotherEarth.Duringthattimehecollected asmuchinformationashecouldabouthisbusiness.Heborrowedbooksfromthe librarytalkedtosuccessfulpeopleinthefieldandbeganplanningcarefully theamountofmoneyandthekindsandnumbersofsupplieshewouldneed.Whenhe finallyopenedwithacapitalof$1500hesetuphisofficeinthekitchen andhisprintingpressinthegarage.Owingtohisdevotion投入tobusinesshis talentandhisskillinmanagementMotherEarthnowhasacirculation发行量of 300000.??NotallsmallbusinessesaredoingasfineasMother Earthas50%ofthe450000thatstartinAmericaeveryyearfail.Still95%of businessesintheUScanbecalledsmall.Altogetherthesebusinessesamount to40%ofAmerica’sgrossnational product国民生产总值.WhatpreparationsdidThomasmakebeforehestartedhisbusiness?
{{*HTML*}}{{B}}第二篇{{/B}} U.S.ScientistsConfirmWateron Mars??NASAscientistssaidthatMarswascovered oncebyvastlakesflowingriversandavarietyofotherwetenvironmentsthat hadthepotentialtosupportlife.??Laboratorytestsaboard NASA’sPhoenixMarsLanderhaveidentifiedwaterinasoilsample.Thelander’s roboticarmdeliveredthesampleWednesdaytoaninstrumentthatidentifies vaporsproducedbytheheatingofsamples.??Wehavewatersaid WilliamBoyntonoftheUniversityofArizonaleadscientistfortheThermaland Evolved-GasAnalyzerorTEGA.ThisisthefirsttimeMartianwaterhasbeen touchedandtasted.??Theroboticarmisacriticalpartofthe PhoenixMarsmission.Itisneededtotrenchintotheicylayersofnorthern polarMarsanddeliversamplestoinstrumentsthatwillanalyzewhatMarsis madeofwhatitswaterislikeandwhetheritisorhaseverbeenapossible habitatforlife.??Thesoilsamplecamefromatrench approximately2inchesdeep.Whentheroboticarmfirstreachedthatdepthit hitahardlayeroffrozensoil.Twoattemptstodeliversamplesoficysoilon dayswhenfreshmaterialwasexposedwerefoiledwhenthesamplesbecamestuck insidethescoop.MostofthematerialinWednesday’ssamplehadbeenexposedto theairfortwodayslettingsomeofthewaterinthesamplevaporizeawayand makingthesoileasiertohandle.??Marsisgivingussome surprisessaidPhoenixprincipalinvestigatorPeterSmithoftheUniversityof Arizona.We’reexcitedbecausesurprisesarewherediscoveriescomefrom.One surpriseishowthesoilisbehaving.Theice-richlayerssticktothescoop whenpoisedinthesunabovethedeckdifferentfromwhatweexpectedfromall theMarssimulationtestingwe’vedonesofar.??Sincelanding onMay25Phoenixhasbeenstudyingsoilwith.achemistrylabTEGAa microscopeaconductivityprobeandcameras.Thescienceteamistryingto determinewhetherthewatericeeverthawsenoughtobeavailableforbiology andifcarbon-containingchemicalsandotherrawmaterialsforlifeare present.??Themissionisexaminingtheskyaswellastheground. ACanadianinstrumentisusingalaserbeamtostudydustandclouds overhead.??It’sa30-wattlightbulbgivingusalasershowon MarssaidVictoriaHipkinoftheCanadianSpaceAgency.??A full-circlecolorpanoramaofPhoenix’ssurroundingsalsohasbeencompletedby thespacecraft.??Thedetailsandpatternsweseeintheground showanice-dominatedterrainasfarastheeyecanseesaidMarkLemmonof TexasA&MUniversityleadscientistforPhoenix’sSurfaceStereoImager camera.Theyhelpusplanmeasurementswe’remakingwithinreachoftherobotic armandinterpretthosemeasurementsonawiderscale. Wherearethescientistsinvolvedintheresearchfrom?
Thefoodis{{U}}insufficient{{/U}}forthreepeople.
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