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? ?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做出判断。如果该句提供的是正确信息，请选A；如果该句提供的是错误信息，请选B；如果该句的信息文章中没有提及，请选C。 ...
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{{*HTML*}}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 ??????? ??????????? ??{{B}}Smoking{{/B}}??Since1939numerousstudieshave beenconductedtodeterminewhethersmokingisahealthhazard.Thetrendofthe evidencehasbeenconsistentandindicatesthatthereisaserioushealthrisk. Researchteamshaveconductedstudiesthatshowbeyondallreasonabledoubtthat tobaccosmokingisassociatedwithashortenedlifeexpectancy.? ?Cigarettesmokingisbelievedbymostresearchworkersinthisfieldto beanimportantfactorinthedevelopmentofcancerofthelungsandcancerof thethroatandisbelievedtoberelatedtocancerofsomeotherorgansofthe body.Malecigarettesmokershaveahigherdeathratefromheartdiseasethan non-smokingmales.Femalesmokersarethoughttobelessaffectedbecausethey donotbreatheinthesmokesodeeply.??Apartfromstatisticsit mightbehelpfultolookatwhatsmokingtobaccodoestothehumanbody.Smoke isamixtureofgasesvaporizedchemicalsminuteparticlesofashandother solids.Thereisalsonicotinewhichispowerfulpoisonandblacktar.As smokeisbreathedinallthosecomponentsformdepositsonthemembranesofthe lungs.Onepointofconcentrationiswheretheairtubeandbronchusdivides. Mostlungcancerbeginsatthispoint.??Filtersandlowtar tobaccoareclaimedtomakesmokingtosomeextentsaferbuttheycanonly slighfiyreducenoteliminatethehazards.Nicotineispoisonous.
{{*HTML*}}下面有3篇短文每篇短文后有5道题每题后面有4个选项请仔细阅读短文并根据短文回答其后面的问题从4个选项中选择1个最佳答案{{B}}第一篇{{/B}} ??????? ????????{{B}}SugarPowerforCell Phones{{/B}}??Usingenzymescommonlyfoundinlivingcellsanew typeoffuelcellproducessmallamountsofelectricityfromsugar.Ifthe technologyisabletosucceedinmassproductionyoumaysomedayshareyour sweetdrinkswithyourcellphone.??Infuelcellschemical reactionsgenerateelectricalcurrents.Theprocessusuallyreliesonprecious metalssuchasplatinum.Inlivingcellsenzymesperformasimilarjob breakingdownsugarstoobtainelectronsandproduceenergy.? ?Whenresearcherspreviouslyusedenzymesinfuelcellstheyhadtrouble keepingthemactivesaysShelleyD.MinteerofStLouisUniversity.Whereas biologicalcellscontinuallyproducefreshenzymesthere’snomechanisminfuel ceilstoreplaceenzymesastheyquicklydegrade.??Minteerand TamaraKlotzbachalsoofStLouisUniversityhavenowdevelopedpolymersthat wraparoundanenzymeandpreserveitinamicroscopicpocket.Wetailorthese pocketstoprovidetheidealmicroenvironmentfortheenzymeMinteersays.The polymerskeeptheenzymeactiveformonthsinsteadofdays.??In thenewfuelcelltinypolymerbagsofenzymeareembeddedinamembranethat coatsoneoftheelectrodes.Whenglucosefromasugaryliquidgetsintoa pockettheenzymeoxidizesitreleasingelectronsandprotons.Theelectrons crossthemembraneandenteruwirethroughWhichtheytraveltotheother electrodewheretheyreactwithoxygenintheatmospheretoproducewater.The flowofelectronsthroughthewireconstitutesanelectricalcurrentthatcan generatepower.??Sofarthenewfuelcellsdon’tproducemuch powerbutthefactthattheyworkatallisexcitingsaysPaulKenisa chemicalengineerattheUniversityofIllinoisatUrbana-Champaign.Just gettingittoworkKenissaysisamajoraccomplishment.? ?Sugar-eatingfuelcellscouldbeanefficientwaytomakeelectricity. Sugariseasytofind.Andthenewfuelcellsthatmnonitarebiodegradable sothetechnologywouldn’tharttheenvironment.Thescientistsarenowtrying tousedifferentenzymesthatwillgetmorepowerfromsugar.Theypredictthat popularproductsmaybeusingthenewtechnologyinaslittleas3 years.AccordingtoParagraph5electronsarereleased
{{*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 CellPhoneLetsYourSecret Out??Yourcellphoneholdssecretsaboutyou. Besidesthenamesand{{U}}?51?{{/U}}thatyou’veprogrammedintoit tracesofyourDNAlingeronthedeviceaccordingtoanewstudy.? ?DNAisgeneticmaterialthat{{U}}?52?{{/U}}ineverycell.Like yourfingerprintyourDNAisuniquetoyou{{U}}?53?{{/U}}youhavean identicaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsalivaorhair left{{U}}?54?{{/U}}atthesceneofacrime.Theresultsoftenhelp detectivesidentify{{U}}?55?{{/U}}andtheirvictims.Yourcellphone canrevealmoreaboutyou{{U}}?56?{{/U}}youmightthink.? ?MethodJ.McFaddenascientistatMcMasterUniversityinHamilton Ontarioheardaboutacrimeinwhichthesuspectbledontoacellphoneand laterdroppedthe{{U}}?57?{{/U}}.Thismadeherwonderwhethertraces ofDNAlingeredoncellphones—evenwhennobloodwasinvolved.{{U}}?58 ?{{/U}}sheandcolleagueMargaretWallaceoftheCityUniversityofNewYork analyzedtheflip-openphonesof10volunteers.Theyusedswabstocollect {{U}}?59?{{/U}}tracesoftheusersfromtwopartsofthephone:the outsidewheretheuserholdsitandthe{{U}}?60?{{/U}}whichis placedattheuser’sear.??Thescientistsscrubbedthephones usingasolutionmademostly{{U}}?61?{{/U}}alcohol.Theaimof washingwastoremovealldetectabletracesofDNA.Theownersgottheirphones {{U}}?62?{{/U}}foranotherweek.Thentheresearcherscollectedthe phonesandrepeatedtheswabbingofeachphoneoncemore.??The scientistsdiscoveredDNAthat{{U}}?63?{{/U}}tothephone’sspeaker oneachofthephones.Bettersampleswerecollectedfromtheoutsideofeach phonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohad apparentlyalsohandledthephone.{{U}}?64?{{/U}}DNAshowedupeven inswabsthatweretakenimmediatelyafterthephoneswerescrubbed.That suggeststhatwashingwon’tremovealltracesofevidencefromacriminal’s device.Socellphonescannowbeaddedtothe{{U}}?65?{{/U}}ofclues thatcanclinchacrime-sceneinvestigation.
{{*HTML*}}下面有3篇短文每篇短文后有5道题每题后面有4个选项请仔细阅读短文并根据短文回答其后面的问题从4个选项中选择1个最佳答案{{B}}第一篇{{/B}} ??????? ????????{{B}}SugarPowerforCell Phones{{/B}}??Usingenzymescommonlyfoundinlivingcellsanew typeoffuelcellproducessmallamountsofelectricityfromsugar.Ifthe technologyisabletosucceedinmassproductionyoumaysomedayshareyour sweetdrinkswithyourcellphone.??Infuelcellschemical reactionsgenerateelectricalcurrents.Theprocessusuallyreliesonprecious metalssuchasplatinum.Inlivingcellsenzymesperformasimilarjob breakingdownsugarstoobtainelectronsandproduceenergy.? ?Whenresearcherspreviouslyusedenzymesinfuelcellstheyhadtrouble keepingthemactivesaysShelleyD.MinteerofStLouisUniversity.Whereas biologicalcellscontinuallyproducefreshenzymesthere’snomechanisminfuel ceilstoreplaceenzymesastheyquicklydegrade.??Minteerand TamaraKlotzbachalsoofStLouisUniversityhavenowdevelopedpolymersthat wraparoundanenzymeandpreserveitinamicroscopicpocket.Wetailorthese pocketstoprovidetheidealmicroenvironmentfortheenzymeMinteersays.The polymerskeeptheenzymeactiveformonthsinsteadofdays.??In thenewfuelcelltinypolymerbagsofenzymeareembeddedinamembranethat coatsoneoftheelectrodes.Whenglucosefromasugaryliquidgetsintoa pockettheenzymeoxidizesitreleasingelectronsandprotons.Theelectrons crossthemembraneandenteruwirethroughWhichtheytraveltotheother electrodewheretheyreactwithoxygenintheatmospheretoproducewater.The flowofelectronsthroughthewireconstitutesanelectricalcurrentthatcan generatepower.??Sofarthenewfuelcellsdon’tproducemuch powerbutthefactthattheyworkatallisexcitingsaysPaulKenisa chemicalengineerattheUniversityofIllinoisatUrbana-Champaign.Just gettingittoworkKenissaysisamajoraccomplishment.? ?Sugar-eatingfuelcellscouldbeanefficientwaytomakeelectricity. Sugariseasytofind.Andthenewfuelcellsthatmnonitarebiodegradable sothetechnologywouldn’tharttheenvironment.Thescientistsarenowtrying tousedifferentenzymesthatwillgetmorepowerfromsugar.Theypredictthat popularproductsmaybeusingthenewtechnologyinaslittleas3 years.Accordingtothefirstparagraphwhencanweshareoursweetdrinkswithourcellphones?
{{*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 TheArcticIceisThawing? ?FatherChristmasmayhavetomovehisworkshopfromtheNorthPole becauseglobalwarmingisthawingtheicebeneathhisfeetandhisreindeers feetaswell.Hisworkshopisindirestraits.Theplatformforthe workshopismeltingsaidStefanNorrisoftheWorldWildlifeFund EnvironmentalGroup’sArcticProgram.??Aneight-nationreportby 250scientistspublishedrecentlypredictedtheArcticOceancouldbeice-free insummerby2100becauseofabuild-upofbeat-trappinggasesinthe atmospheremainlyfromburningfossilfuelsincarsorfactories.TheNorth PoleisgettingmoreandmoreinhabitabletoFatherChristmas{{U}}?46 ?{{/U}}.YoungpeoplelearnthatFatherChristmas’workshopproduces millionsofgiftsdeliveredbyhimonaflyingreindeer-drawnsleigh.Hollywood movieslikeThePolarExpresstriedtomakeviewersbelievethatFather ChristmaslivesattheNorthPole.{{U}}?47?{{/U}}.? ?TheFortressofSolitudeisneartheNorthPolethatcouldbeunder threatinawarmerworld.JanBoldtspokesmanoftheDanishMinistryof SciencesuggestedwaystorescueFatherChristmas.{{U}}?48?{{/U}}. Anotheralternativehearguedwouldbebuildingsomeelectricalfacilitiesto ensuretheicestaysontheNorthPoleforhim.Thisshouldbeasubjectfor theUnitedNations.hesaidDanmarkcouldbuildwindmillstoprovideFather Christmaswithpower.DenmarksaysFairChristmas’srealhomeisGreenland whichwillhelpDenmarkthinkstostrengthenitspositioninclaimingthe sovereigntyoverthePole.{{U}}?49?{{/U}}.??Doesn’the alreadyspeakDanish?BoldtsaidfrostilywhenaskedifFatherChristmaswould beforcedtolearnDanishifDenmarkwoninternationalrecognitionofitsclaim tothePole.Lastmonth’sArcticreportsaidtheregioniswarmingtwiceasfast astherestoftheglobepartlybecausedarkgroundorwateronceuncovered soaksupmoreheatthaniceorsnow.FinlandhasbeenmostfavoredbyFather Christmasandithasabout500000touristsayeartovisititsChristmascenter inRovaniemiinLapland.{{U}}?50?{{/U}}.??A.However Nordicnationsallrejectitbyclaimingthattheircountriesarehis home.??B.ThereforetheNorthPoleisthemostattractiveplace intheworld.??C.IfDenmark’sclaimwereaccepted internationallyitwouldhavethelegalrighttosearchforoilandgasatthe NorthPole.??D.Oneofthemwouldbebuildingagiantfloating icerinkfortheworkshopifthePolethaws.??E.MaybeFather ChristmashasalreadymovedtoRovaniemi.??F.Hemayhavetomove fromtheNorthPolewithinonechildren’slifetimes.
A{{U}}deadly{{/U}}diseasehasaffectedtheseanimals.
{{*HTML*}}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 ??????? ??????????? ??{{B}}Smoking{{/B}}??Since1939numerousstudieshave beenconductedtodeterminewhethersmokingisahealthhazard.Thetrendofthe evidencehasbeenconsistentandindicatesthatthereisaserioushealthrisk. Researchteamshaveconductedstudiesthatshowbeyondallreasonabledoubtthat tobaccosmokingisassociatedwithashortenedlifeexpectancy.? ?Cigarettesmokingisbelievedbymostresearchworkersinthisfieldto beanimportantfactorinthedevelopmentofcancerofthelungsandcancerof thethroatandisbelievedtoberelatedtocancerofsomeotherorgansofthe body.Malecigarettesmokershaveahigherdeathratefromheartdiseasethan non-smokingmales.Femalesmokersarethoughttobelessaffectedbecausethey donotbreatheinthesmokesodeeply.??Apartfromstatisticsit mightbehelpfultolookatwhatsmokingtobaccodoestothehumanbody.Smoke isamixtureofgasesvaporizedchemicalsminuteparticlesofashandother solids.Thereisalsonicotinewhichispowerfulpoisonandblacktar.As smokeisbreathedinallthosecomponentsformdepositsonthemembranesofthe lungs.Onepointofconcentrationiswheretheairtubeandbronchusdivides. Mostlungcancerbeginsatthispoint.??Filtersandlowtar tobaccoareclaimedtomakesmokingtosomeextentsaferbuttheycanonly slighfiyreducenoteliminatethehazards.Thereisevidencethatsmokingisresponsibleforbreastcancer.
{{*HTML*}}下面有3篇短文每篇短文后有5道题每题后面有4个选项请仔细阅读短文并根据短文回答其后面的问题从4个选项中选择1个最佳答案{{B}}第一篇{{/B}} ??????? ????????{{B}}SugarPowerforCell Phones{{/B}}??Usingenzymescommonlyfoundinlivingcellsanew typeoffuelcellproducessmallamountsofelectricityfromsugar.Ifthe technologyisabletosucceedinmassproductionyoumaysomedayshareyour sweetdrinkswithyourcellphone.??Infuelcellschemical reactionsgenerateelectricalcurrents.Theprocessusuallyreliesonprecious metalssuchasplatinum.Inlivingcellsenzymesperformasimilarjob breakingdownsugarstoobtainelectronsandproduceenergy.? ?Whenresearcherspreviouslyusedenzymesinfuelcellstheyhadtrouble keepingthemactivesaysShelleyD.MinteerofStLouisUniversity.Whereas biologicalcellscontinuallyproducefreshenzymesthere’snomechanisminfuel ceilstoreplaceenzymesastheyquicklydegrade.??Minteerand TamaraKlotzbachalsoofStLouisUniversityhavenowdevelopedpolymersthat wraparoundanenzymeandpreserveitinamicroscopicpocket.Wetailorthese pocketstoprovidetheidealmicroenvironmentfortheenzymeMinteersays.The polymerskeeptheenzymeactiveformonthsinsteadofdays.??In thenewfuelcelltinypolymerbagsofenzymeareembeddedinamembranethat coatsoneoftheelectrodes.Whenglucosefromasugaryliquidgetsintoa pockettheenzymeoxidizesitreleasingelectronsandprotons.Theelectrons crossthemembraneandenteruwirethroughWhichtheytraveltotheother electrodewheretheyreactwithoxygenintheatmospheretoproducewater.The flowofelectronsthroughthewireconstitutesanelectricalcurrentthatcan generatepower.??Sofarthenewfuelcellsdon’tproducemuch powerbutthefactthattheyworkatallisexcitingsaysPaulKenisa chemicalengineerattheUniversityofIllinoisatUrbana-Champaign.Just gettingittoworkKenissaysisamajoraccomplishment.? ?Sugar-eatingfuelcellscouldbeanefficientwaytomakeelectricity. Sugariseasytofind.Andthenewfuelcellsthatmnonitarebiodegradable sothetechnologywouldn’tharttheenvironment.Thescientistsarenowtrying tousedifferentenzymesthatwillgetmorepowerfromsugar.Theypredictthat popularproductsmaybeusingthenewtechnologyinaslittleas3 years.AccordingtothelastparagraphwhatisNOTtrueofthenewfuelcells?
Thedentisthasdecidedto{{U}}extract{{/U}}herbadtooth.
{{*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 CellPhoneLetsYourSecret Out??Yourcellphoneholdssecretsaboutyou. Besidesthenamesand{{U}}?51?{{/U}}thatyou’veprogrammedintoit tracesofyourDNAlingeronthedeviceaccordingtoanewstudy.? ?DNAisgeneticmaterialthat{{U}}?52?{{/U}}ineverycell.Like yourfingerprintyourDNAisuniquetoyou{{U}}?53?{{/U}}youhavean identicaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsalivaorhair left{{U}}?54?{{/U}}atthesceneofacrime.Theresultsoftenhelp detectivesidentify{{U}}?55?{{/U}}andtheirvictims.Yourcellphone canrevealmoreaboutyou{{U}}?56?{{/U}}youmightthink.? ?MethodJ.McFaddenascientistatMcMasterUniversityinHamilton Ontarioheardaboutacrimeinwhichthesuspectbledontoacellphoneand laterdroppedthe{{U}}?57?{{/U}}.Thismadeherwonderwhethertraces ofDNAlingeredoncellphones—evenwhennobloodwasinvolved.{{U}}?58 ?{{/U}}sheandcolleagueMargaretWallaceoftheCityUniversityofNewYork analyzedtheflip-openphonesof10volunteers.Theyusedswabstocollect {{U}}?59?{{/U}}tracesoftheusersfromtwopartsofthephone:the outsidewheretheuserholdsitandthe{{U}}?60?{{/U}}whichis placedattheuser’sear.??Thescientistsscrubbedthephones usingasolutionmademostly{{U}}?61?{{/U}}alcohol.Theaimof washingwastoremovealldetectabletracesofDNA.Theownersgottheirphones {{U}}?62?{{/U}}foranotherweek.Thentheresearcherscollectedthe phonesandrepeatedtheswabbingofeachphoneoncemore.??The scientistsdiscoveredDNAthat{{U}}?63?{{/U}}tothephone’sspeaker oneachofthephones.Bettersampleswerecollectedfromtheoutsideofeach phonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohad apparentlyalsohandledthephone.{{U}}?64?{{/U}}DNAshowedupeven inswabsthatweretakenimmediatelyafterthephoneswerescrubbed.That suggeststhatwashingwon’tremovealltracesofevidencefromacriminal’s device.Socellphonescannowbeaddedtothe{{U}}?65?{{/U}}ofclues thatcanclinchacrime-sceneinvestigation.
{{*HTML*}}{{B}}第二篇{{/B}} ??????? ?????????{{B}}EiffelIsan Eyeful{{/B}}??Some300metersupneartheEiffelTower’s wind-whippedsummittheworldcomestoscribble.JapaneseBraziliansAmericans ?theygraffititheirnameslovesandpoliticsonthecoldiron-- transformingthemostFrenchofmonumentsintosymbolofaworldonthe move.??WithParislaidoutinminiaturebelowitseemsstrange thatvisitorswouldratherwastetimemarkingtheirpresencethanadmirethe view.Butthegraffitialsoraisesaquestion:Whynearly114yearsafterit wascompletedanddecadesafteritceasedtobetheworld’stalleststructure islaTourEiffelstillsopopular???Thereasonsareascomplex astheironworkthatgracesastructuresome90storieshigh.Butpartofthe answerisnodoubtitsagelessness.Regularlymaintaineditshouldneverrust away.Graffitiisregularlypaintedoverbutthetowerliveson.? ?EiffelrepresentsParisandParisisFrance.ItIsverysymbolicsays HuguesRicharda31-year-oldFrenchmanwhoholdstherecordforcyclingupto thetower’ssecondfloor--747stepsin19minutesand4secondswithout touchingthefloorwithhisfeet.It’sironladyitinspiresushe says.??Buttowhat?Afterallthetowerdoesn’thaveapurpose. Itceasedtobetheworld’stallestin1930whentheChryslerBuildingwentup inNewYork.Yestelevisionandradiosignalsarebeamedfromthetopand GustaveEiffelafreneticbuilderwhodiedonDecember27aged91usedits heightforconductingresearchintoweatheraerodynamicsandradio communication.??Butinessencethetowerinspiressimplybybeing there--ablankcanvasforvisitorstomakeofitwhattheywill.Tothe technicallymindedit’sanengineeringtriumph.Forloversit’s romantic.??Thetowerwilloutlastallofusandbyalongway saysIsabelleEsnouswhosecompanymanagesEiffel Tower.Whatseemsstrangetotheauthor?
{{*HTML*}}阅读下面这篇短文短文后有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个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 ?????????? ??????????? ?{{B}}IcyMicrobes{{/B}}??1?Inicethathassealedasalty Antarcticlakeformorethan2800yearsscientistshavefoundfrozenbacteria andalgaethatreturnedtolifeafterthawing.Theresearchmayhelpinthe searchforlifeonMarswhichisthoughttohavesubsurfacelakesof ice.??2?AresearchteamledbyPeterDoranofthe UniversityOfIllinoisatChicagodrilledthroughmorethan39feetoficeto collectsamplesofbacteriaandalgae.WhenDoran’steambroughtthembackand warmedthemupabittheysprangbacktolife.??3?Doran saidthemicrobeshavebeenage-datedat2800yearsoldbutevenolder microbesmaylivedeeperintheicesheetsealingthelakeandinthebriny waterbelowtheice.?Thatdeepericeandthewateritselfwillbe cautiouslysampledinalaterexpeditionthatwilltesttechniquesthatmayone daybeusedonMars.??4?CalledLakeVidathe 4.5-square-kilometerbodyisoneofaseriesoflakeslocatedintheMcMurdoDry ValleysofAntarcticasome2200kilometersduesouthofNewZealand.Thislake hasbeenknownsincethe1950sbutpeopleignoreditbecausetheythoughtit wasjustabigblockofice.Whileatthesiteforotherresearchinthe1990s Doranandhiscolleaguessentradarsignalsintotheclearicecoveringthelake andweresurprisedtofindthat62feetbelowtherewasapoolofliquidwater thatwasaboutseventimesmoresaltythanseawater.??5 ?Thatpromptedtheresearcherstoreturnin1996withequipmenttodrilla holedowntowithinafewfeetofthewaterlayer.Atthebottomofthishole researchersharvestedspecimensof.algaeandbacteria.??6 ?Theresearcherswillreturnin2004equippedwithinstrumentsthatare sterilized.Theywillthendrillthroughthefull62feetoficeandsamplesome ofthebrinywaterfromthelakeforanalysis.Thewaterspecimenwillbe culturedtoseeifitcontainslife.Specimensfromthewaterareexpectedtobe evenolderthanthelifeformsextractedfromtheicecovering.Whatthescientistswilldoin2004______.
{{*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 CellPhoneLetsYourSecret Out??Yourcellphoneholdssecretsaboutyou. Besidesthenamesand{{U}}?51?{{/U}}thatyou’veprogrammedintoit tracesofyourDNAlingeronthedeviceaccordingtoanewstudy.? ?DNAisgeneticmaterialthat{{U}}?52?{{/U}}ineverycell.Like yourfingerprintyourDNAisuniquetoyou{{U}}?53?{{/U}}youhavean identicaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsalivaorhair left{{U}}?54?{{/U}}atthesceneofacrime.Theresultsoftenhelp detectivesidentify{{U}}?55?{{/U}}andtheirvictims.Yourcellphone canrevealmoreaboutyou{{U}}?56?{{/U}}youmightthink.? ?MethodJ.McFaddenascientistatMcMasterUniversityinHamilton Ontarioheardaboutacrimeinwhichthesuspectbledontoacellphoneand laterdroppedthe{{U}}?57?{{/U}}.Thismadeherwonderwhethertraces ofDNAlingeredoncellphones—evenwhennobloodwasinvolved.{{U}}?58 ?{{/U}}sheandcolleagueMargaretWallaceoftheCityUniversityofNewYork analyzedtheflip-openphonesof10volunteers.Theyusedswabstocollect {{U}}?59?{{/U}}tracesoftheusersfromtwopartsofthephone:the outsidewheretheuserholdsitandthe{{U}}?60?{{/U}}whichis placedattheuser’sear.??Thescientistsscrubbedthephones usingasolutionmademostly{{U}}?61?{{/U}}alcohol.Theaimof washingwastoremovealldetectabletracesofDNA.Theownersgottheirphones {{U}}?62?{{/U}}foranotherweek.Thentheresearcherscollectedthe phonesandrepeatedtheswabbingofeachphoneoncemore.??The scientistsdiscoveredDNAthat{{U}}?63?{{/U}}tothephone’sspeaker oneachofthephones.Bettersampleswerecollectedfromtheoutsideofeach phonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohad apparentlyalsohandledthephone.{{U}}?64?{{/U}}DNAshowedupeven inswabsthatweretakenimmediatelyafterthephoneswerescrubbed.That suggeststhatwashingwon’tremovealltracesofevidencefromacriminal’s device.Socellphonescannowbeaddedtothe{{U}}?65?{{/U}}ofclues thatcanclinchacrime-sceneinvestigation.
{{*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 CellPhoneLetsYourSecret Out??Yourcellphoneholdssecretsaboutyou. Besidesthenamesand{{U}}?51?{{/U}}thatyou’veprogrammedintoit tracesofyourDNAlingeronthedeviceaccordingtoanewstudy.? ?DNAisgeneticmaterialthat{{U}}?52?{{/U}}ineverycell.Like yourfingerprintyourDNAisuniquetoyou{{U}}?53?{{/U}}youhavean identicaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsalivaorhair left{{U}}?54?{{/U}}atthesceneofacrime.Theresultsoftenhelp detectivesidentify{{U}}?55?{{/U}}andtheirvictims.Yourcellphone canrevealmoreaboutyou{{U}}?56?{{/U}}youmightthink.? ?MethodJ.McFaddenascientistatMcMasterUniversityinHamilton Ontarioheardaboutacrimeinwhichthesuspectbledontoacellphoneand laterdroppedthe{{U}}?57?{{/U}}.Thismadeherwonderwhethertraces ofDNAlingeredoncellphones—evenwhennobloodwasinvolved.{{U}}?58 ?{{/U}}sheandcolleagueMargaretWallaceoftheCityUniversityofNewYork analyzedtheflip-openphonesof10volunteers.Theyusedswabstocollect {{U}}?59?{{/U}}tracesoftheusersfromtwopartsofthephone:the outsidewheretheuserholdsitandthe{{U}}?60?{{/U}}whichis placedattheuser’sear.??Thescientistsscrubbedthephones usingasolutionmademostly{{U}}?61?{{/U}}alcohol.Theaimof washingwastoremovealldetectabletracesofDNA.Theownersgottheirphones {{U}}?62?{{/U}}foranotherweek.Thentheresearcherscollectedthe phonesandrepeatedtheswabbingofeachphoneoncemore.??The scientistsdiscoveredDNAthat{{U}}?63?{{/U}}tothephone’sspeaker oneachofthephones.Bettersampleswerecollectedfromtheoutsideofeach phonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohad apparentlyalsohandledthephone.{{U}}?64?{{/U}}DNAshowedupeven inswabsthatweretakenimmediatelyafterthephoneswerescrubbed.That suggeststhatwashingwon’tremovealltracesofevidencefromacriminal’s device.Socellphonescannowbeaddedtothe{{U}}?65?{{/U}}ofclues thatcanclinchacrime-sceneinvestigation.
{{*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 CellPhoneLetsYourSecret Out??Yourcellphoneholdssecretsaboutyou. Besidesthenamesand{{U}}?51?{{/U}}thatyou’veprogrammedintoit tracesofyourDNAlingeronthedeviceaccordingtoanewstudy.? ?DNAisgeneticmaterialthat{{U}}?52?{{/U}}ineverycell.Like yourfingerprintyourDNAisuniquetoyou{{U}}?53?{{/U}}youhavean identicaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsalivaorhair left{{U}}?54?{{/U}}atthesceneofacrime.Theresultsoftenhelp detectivesidentify{{U}}?55?{{/U}}andtheirvictims.Yourcellphone canrevealmoreaboutyou{{U}}?56?{{/U}}youmightthink.? ?MethodJ.McFaddenascientistatMcMasterUniversityinHamilton Ontarioheardaboutacrimeinwhichthesuspectbledontoacellphoneand laterdroppedthe{{U}}?57?{{/U}}.Thismadeherwonderwhethertraces ofDNAlingeredoncellphones—evenwhennobloodwasinvolved.{{U}}?58 ?{{/U}}sheandcolleagueMargaretWallaceoftheCityUniversityofNewYork analyzedtheflip-openphonesof10volunteers.Theyusedswabstocollect {{U}}?59?{{/U}}tracesoftheusersfromtwopartsofthephone:the outsidewheretheuserholdsitandthe{{U}}?60?{{/U}}whichis placedattheuser’sear.??Thescientistsscrubbedthephones usingasolutionmademostly{{U}}?61?{{/U}}alcohol.Theaimof washingwastoremovealldetectabletracesofDNA.Theownersgottheirphones {{U}}?62?{{/U}}foranotherweek.Thentheresearcherscollectedthe phonesandrepeatedtheswabbingofeachphoneoncemore.??The scientistsdiscoveredDNAthat{{U}}?63?{{/U}}tothephone’sspeaker oneachofthephones.Bettersampleswerecollectedfromtheoutsideofeach phonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohad apparentlyalsohandledthephone.{{U}}?64?{{/U}}DNAshowedupeven inswabsthatweretakenimmediatelyafterthephoneswerescrubbed.That suggeststhatwashingwon’tremovealltracesofevidencefromacriminal’s device.Socellphonescannowbeaddedtothe{{U}}?65?{{/U}}ofclues thatcanclinchacrime-sceneinvestigation.
{{*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 CellPhoneLetsYourSecret Out??Yourcellphoneholdssecretsaboutyou. Besidesthenamesand{{U}}?51?{{/U}}thatyou’veprogrammedintoit tracesofyourDNAlingeronthedeviceaccordingtoanewstudy.? ?DNAisgeneticmaterialthat{{U}}?52?{{/U}}ineverycell.Like yourfingerprintyourDNAisuniquetoyou{{U}}?53?{{/U}}youhavean identicaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsalivaorhair left{{U}}?54?{{/U}}atthesceneofacrime.Theresultsoftenhelp detectivesidentify{{U}}?55?{{/U}}andtheirvictims.Yourcellphone canrevealmoreaboutyou{{U}}?56?{{/U}}youmightthink.? ?MethodJ.McFaddenascientistatMcMasterUniversityinHamilton Ontarioheardaboutacrimeinwhichthesuspectbledontoacellphoneand laterdroppedthe{{U}}?57?{{/U}}.Thismadeherwonderwhethertraces ofDNAlingeredoncellphones—evenwhennobloodwasinvolved.{{U}}?58 ?{{/U}}sheandcolleagueMargaretWallaceoftheCityUniversityofNewYork analyzedtheflip-openphonesof10volunteers.Theyusedswabstocollect {{U}}?59?{{/U}}tracesoftheusersfromtwopartsofthephone:the outsidewheretheuserholdsitandthe{{U}}?60?{{/U}}whichis placedattheuser’sear.??Thescientistsscrubbedthephones usingasolutionmademostly{{U}}?61?{{/U}}alcohol.Theaimof washingwastoremovealldetectabletracesofDNA.Theownersgottheirphones {{U}}?62?{{/U}}foranotherweek.Thentheresearcherscollectedthe phonesandrepeatedtheswabbingofeachphoneoncemore.??The scientistsdiscoveredDNAthat{{U}}?63?{{/U}}tothephone’sspeaker oneachofthephones.Bettersampleswerecollectedfromtheoutsideofeach phonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohad apparentlyalsohandledthephone.{{U}}?64?{{/U}}DNAshowedupeven inswabsthatweretakenimmediatelyafterthephoneswerescrubbed.That suggeststhatwashingwon’tremovealltracesofevidencefromacriminal’s device.Socellphonescannowbeaddedtothe{{U}}?65?{{/U}}ofclues thatcanclinchacrime-sceneinvestigation.
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{{*HTML*}}{{B}}第三篇{{/B}} Hurricane飓风Katrina? ?Ahurricaneisafiercelypowerfulrotating旋转的formoftropicalstorm thatcanbe124to1240milesindiameter.Thetermhurricaneisderivedfrom HuricanthenameofanativeAmericanstormgod.Hurricanesaretypicalofa calmcentralregionoflowpressurebetween12to60milesindiameterknown astheeye.Theyoccurintropicalregions.Overitslifetimeoneofthesecan releaseasmuchenergyas10000nuclearbombs.??Theseedfor hurricaneformationisacluster聚集ofthunderstormoverwarmtropicalwaters. Hurricanescanonlyformandbefedwhenthesea-surfacetemperatureexceeds27℃ andthesurroundingatmosphereiscalm.TheserequirementsaremetbetweenJune andNovemberinthenorthernpartoftheworld.??Underthese conditionslargequantitiesofwaterevaporate蒸发andcondense冷凝into cloudsandrain-releasingheatintheprocess.Itisthisheatenergycombined withtherotationoftheEarththatdrivesahurricane.??When thewarmcolumnofairfromtheseasurfacefirstbeginstoriseitcausesan areaoflowpressure.Thisinturncreateswindasairisdrawnintothearea. Thisspinningwinddragsupmoremoistairfromtheseasurfaceinaprocess thatstrengthensthestorm.Coldairfallsbacktotheoceansurfacethroughthe eyeandontheoutsideofthestorm.??Initiallywhenwindspeeds reach23milesperhourthesemildwetandgreyweathersystemsareknownas depressionsorlowairpressure.HurricaneKatrinaformedinthiswayoverthe southeasternBahamason23August2005Katrinahashadadevastatingimpacton theGulfCoastoftheUSleavingadisasterzoneof90000squaremilesinits wake尾迹-almostthesizeoftheUK.Thousandshavebeenkilledorinjuredand morethanhalfamillionpeoplehavebecomehomelessinahumanitarian人道主义的 crisisofascalenotseenintheUSsincetheGreatDepression.Thecostofthe damagemaytop$100billion.Thewordimpactparagragh5couldbebestreplacedby______.
{{*HTML*}}阅读下面这篇短文短文后有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个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 ?????????? ??????????? ?{{B}}IcyMicrobes{{/B}}??1?Inicethathassealedasalty Antarcticlakeformorethan2800yearsscientistshavefoundfrozenbacteria andalgaethatreturnedtolifeafterthawing.Theresearchmayhelpinthe searchforlifeonMarswhichisthoughttohavesubsurfacelakesof ice.??2?AresearchteamledbyPeterDoranofthe UniversityOfIllinoisatChicagodrilledthroughmorethan39feetoficeto collectsamplesofbacteriaandalgae.WhenDoran’steambroughtthembackand warmedthemupabittheysprangbacktolife.??3?Doran saidthemicrobeshavebeenage-datedat2800yearsoldbutevenolder microbesmaylivedeeperintheicesheetsealingthelakeandinthebriny waterbelowtheice.?Thatdeepericeandthewateritselfwillbe cautiouslysampledinalaterexpeditionthatwilltesttechniquesthatmayone daybeusedonMars.??4?CalledLakeVidathe 4.5-square-kilometerbodyisoneofaseriesoflakeslocatedintheMcMurdoDry ValleysofAntarcticasome2200kilometersduesouthofNewZealand.Thislake hasbeenknownsincethe1950sbutpeopleignoreditbecausetheythoughtit wasjustabigblockofice.Whileatthesiteforotherresearchinthe1990s Doranandhiscolleaguessentradarsignalsintotheclearicecoveringthelake andweresurprisedtofindthat62feetbelowtherewasapoolofliquidwater thatwasaboutseventimesmoresaltythanseawater.??5 ?Thatpromptedtheresearcherstoreturnin1996withequipmenttodrilla holedowntowithinafewfeetofthewaterlayer.Atthebottomofthishole researchersharvestedspecimensof.algaeandbacteria.??6 ?Theresearcherswillreturnin2004equippedwithinstrumentsthatare sterilized.Theywillthendrillthroughthefull62feetoficeandsamplesome ofthebrinywaterfromthelakeforanalysis.Thewaterspecimenwillbe culturedtoseeifitcontainslife.Specimensfromthewaterareexpectedtobe evenolderthanthelifeformsextractedfromtheicecovering.ScientistsignoredLakeVidabecausetheythoughtthatalakeofice______. A?isfoundtobeagreatdealhigherthanthatofseawater B?wasoflittlescientificvalue C?maybeolderthanthatcollectedbelow39feetofice D?mighthavecomefromMars E?istocollectsomebrinylakewaterforanalysis F?mayreturntolifesoonerthanmicrobesfrozeninthesurfaceice
{{*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 TheArcticIceisThawing? ?FatherChristmasmayhavetomovehisworkshopfromtheNorthPole becauseglobalwarmingisthawingtheicebeneathhisfeetandhisreindeers feetaswell.Hisworkshopisindirestraits.Theplatformforthe workshopismeltingsaidStefanNorrisoftheWorldWildlifeFund EnvironmentalGroup’sArcticProgram.??Aneight-nationreportby 250scientistspublishedrecentlypredictedtheArcticOceancouldbeice-free insummerby2100becauseofabuild-upofbeat-trappinggasesinthe atmospheremainlyfromburningfossilfuelsincarsorfactories.TheNorth PoleisgettingmoreandmoreinhabitabletoFatherChristmas{{U}}?46 ?{{/U}}.YoungpeoplelearnthatFatherChristmas’workshopproduces millionsofgiftsdeliveredbyhimonaflyingreindeer-drawnsleigh.Hollywood movieslikeThePolarExpresstriedtomakeviewersbelievethatFather ChristmaslivesattheNorthPole.{{U}}?47?{{/U}}.? ?TheFortressofSolitudeisneartheNorthPolethatcouldbeunder threatinawarmerworld.JanBoldtspokesmanoftheDanishMinistryof SciencesuggestedwaystorescueFatherChristmas.{{U}}?48?{{/U}}. Anotheralternativehearguedwouldbebuildingsomeelectricalfacilitiesto ensuretheicestaysontheNorthPoleforhim.Thisshouldbeasubjectfor theUnitedNations.hesaidDanmarkcouldbuildwindmillstoprovideFather Christmaswithpower.DenmarksaysFairChristmas’srealhomeisGreenland whichwillhelpDenmarkthinkstostrengthenitspositioninclaimingthe sovereigntyoverthePole.{{U}}?49?{{/U}}.??Doesn’the alreadyspeakDanish?BoldtsaidfrostilywhenaskedifFatherChristmaswould beforcedtolearnDanishifDenmarkwoninternationalrecognitionofitsclaim tothePole.Lastmonth’sArcticreportsaidtheregioniswarmingtwiceasfast astherestoftheglobepartlybecausedarkgroundorwateronceuncovered soaksupmoreheatthaniceorsnow.FinlandhasbeenmostfavoredbyFather Christmasandithasabout500000touristsayeartovisititsChristmascenter inRovaniemiinLapland.{{U}}?50?{{/U}}.??A.However Nordicnationsallrejectitbyclaimingthattheircountriesarehis home.??B.ThereforetheNorthPoleisthemostattractiveplace intheworld.??C.IfDenmark’sclaimwereaccepted internationallyitwouldhavethelegalrighttosearchforoilandgasatthe NorthPole.??D.Oneofthemwouldbebuildingagiantfloating icerinkfortheworkshopifthePolethaws.??E.MaybeFather ChristmashasalreadymovedtoRovaniemi.??F.Hemayhavetomove fromtheNorthPolewithinonechildren’slifetimes.
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{{*HTML*}}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 ??????? ??????????? ??{{B}}Smoking{{/B}}??Since1939numerousstudieshave beenconductedtodeterminewhethersmokingisahealthhazard.Thetrendofthe evidencehasbeenconsistentandindicatesthatthereisaserioushealthrisk. Researchteamshaveconductedstudiesthatshowbeyondallreasonabledoubtthat tobaccosmokingisassociatedwithashortenedlifeexpectancy.? ?Cigarettesmokingisbelievedbymostresearchworkersinthisfieldto beanimportantfactorinthedevelopmentofcancerofthelungsandcancerof thethroatandisbelievedtoberelatedtocancerofsomeotherorgansofthe body.Malecigarettesmokershaveahigherdeathratefromheartdiseasethan non-smokingmales.Femalesmokersarethoughttobelessaffectedbecausethey donotbreatheinthesmokesodeeply.??Apartfromstatisticsit mightbehelpfultolookatwhatsmokingtobaccodoestothehumanbody.Smoke isamixtureofgasesvaporizedchemicalsminuteparticlesofashandother solids.Thereisalsonicotinewhichispowerfulpoisonandblacktar.As smokeisbreathedinallthosecomponentsformdepositsonthemembranesofthe lungs.Onepointofconcentrationiswheretheairtubeandbronchusdivides. Mostlungcancerbeginsatthispoint.??Filtersandlowtar tobaccoareclaimedtomakesmokingtosomeextentsaferbuttheycanonly slighfiyreducenoteliminatethehazards.Smokingreducesone’slifeexpectancy.
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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 CellPhoneLetsYourSecret Out??Yourcellphoneholdssecretsaboutyou. Besidesthenamesand{{U}}?51?{{/U}}thatyou’veprogrammedintoit tracesofyourDNAlingeronthedeviceaccordingtoanewstudy.? ?DNAisgeneticmaterialthat{{U}}?52?{{/U}}ineverycell.Like yourfingerprintyourDNAisuniquetoyou{{U}}?53?{{/U}}youhavean identicaltwin.ScientiststodayroutinelyanalyzeDNAinbloodsalivaorhair left{{U}}?54?{{/U}}atthesceneofacrime.Theresultsoftenhelp detectivesidentify{{U}}?55?{{/U}}andtheirvictims.Yourcellphone canrevealmoreaboutyou{{U}}?56?{{/U}}youmightthink.? ?MethodJ.McFaddenascientistatMcMasterUniversityinHamilton Ontarioheardaboutacrimeinwhichthesuspectbledontoacellphoneand laterdroppedthe{{U}}?57?{{/U}}.Thismadeherwonderwhethertraces ofDNAlingeredoncellphones—evenwhennobloodwasinvolved.{{U}}?58 ?{{/U}}sheandcolleagueMargaretWallaceoftheCityUniversityofNewYork analyzedtheflip-openphonesof10volunteers.Theyusedswabstocollect {{U}}?59?{{/U}}tracesoftheusersfromtwopartsofthephone:the outsidewheretheuserholdsitandthe{{U}}?60?{{/U}}whichis placedattheuser’sear.??Thescientistsscrubbedthephones usingasolutionmademostly{{U}}?61?{{/U}}alcohol.Theaimof washingwastoremovealldetectabletracesofDNA.Theownersgottheirphones {{U}}?62?{{/U}}foranotherweek.Thentheresearcherscollectedthe phonesandrepeatedtheswabbingofeachphoneoncemore.??The scientistsdiscoveredDNAthat{{U}}?63?{{/U}}tothephone’sspeaker oneachofthephones.Bettersampleswerecollectedfromtheoutsideofeach phonebutthoseswabsalsopickedupDNAthatbelongedtootherpeoplewhohad apparentlyalsohandledthephone.{{U}}?64?{{/U}}DNAshowedupeven inswabsthatweretakenimmediatelyafterthephoneswerescrubbed.That suggeststhatwashingwon’tremovealltracesofevidencefromacriminal’s device.Socellphonescannowbeaddedtothe{{U}}?65?{{/U}}ofclues thatcanclinchacrime-sceneinvestigation.
{{*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 TheArcticIceisThawing? ?FatherChristmasmayhavetomovehisworkshopfromtheNorthPole becauseglobalwarmingisthawingtheicebeneathhisfeetandhisreindeers feetaswell.Hisworkshopisindirestraits.Theplatformforthe workshopismeltingsaidStefanNorrisoftheWorldWildlifeFund EnvironmentalGroup’sArcticProgram.??Aneight-nationreportby 250scientistspublishedrecentlypredictedtheArcticOceancouldbeice-free insummerby2100becauseofabuild-upofbeat-trappinggasesinthe atmospheremainlyfromburningfossilfuelsincarsorfactories.TheNorth PoleisgettingmoreandmoreinhabitabletoFatherChristmas{{U}}?46 ?{{/U}}.YoungpeoplelearnthatFatherChristmas’workshopproduces millionsofgiftsdeliveredbyhimonaflyingreindeer-drawnsleigh.Hollywood movieslikeThePolarExpresstriedtomakeviewersbelievethatFather ChristmaslivesattheNorthPole.{{U}}?47?{{/U}}.? ?TheFortressofSolitudeisneartheNorthPolethatcouldbeunder threatinawarmerworld.JanBoldtspokesmanoftheDanishMinistryof SciencesuggestedwaystorescueFatherChristmas.{{U}}?48?{{/U}}. Anotheralternativehearguedwouldbebuildingsomeelectricalfacilitiesto ensuretheicestaysontheNorthPoleforhim.Thisshouldbeasubjectfor theUnitedNations.hesaidDanmarkcouldbuildwindmillstoprovideFather Christmaswithpower.DenmarksaysFairChristmas’srealhomeisGreenland whichwillhelpDenmarkthinkstostrengthenitspositioninclaimingthe sovereigntyoverthePole.{{U}}?49?{{/U}}.??Doesn’the alreadyspeakDanish?BoldtsaidfrostilywhenaskedifFatherChristmaswould beforcedtolearnDanishifDenmarkwoninternationalrecognitionofitsclaim tothePole.Lastmonth’sArcticreportsaidtheregioniswarmingtwiceasfast astherestoftheglobepartlybecausedarkgroundorwateronceuncovered soaksupmoreheatthaniceorsnow.FinlandhasbeenmostfavoredbyFather Christmasandithasabout500000touristsayeartovisititsChristmascenter inRovaniemiinLapland.{{U}}?50?{{/U}}.??A.However Nordicnationsallrejectitbyclaimingthattheircountriesarehis home.??B.ThereforetheNorthPoleisthemostattractiveplace intheworld.??C.IfDenmark’sclaimwereaccepted internationallyitwouldhavethelegalrighttosearchforoilandgasatthe NorthPole.??D.Oneofthemwouldbebuildingagiantfloating icerinkfortheworkshopifthePolethaws.??E.MaybeFather ChristmashasalreadymovedtoRovaniemi.??F.Hemayhavetomove fromtheNorthPolewithinonechildren’slifetimes.{{*HTML*}}
{{*HTML*}}阅读下面这篇短文短文后有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个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 ?????????? ??????????? ?{{B}}IcyMicrobes{{/B}}??1?Inicethathassealedasalty Antarcticlakeformorethan2800yearsscientistshavefoundfrozenbacteria andalgaethatreturnedtolifeafterthawing.Theresearchmayhelpinthe searchforlifeonMarswhichisthoughttohavesubsurfacelakesof ice.??2?AresearchteamledbyPeterDoranofthe UniversityOfIllinoisatChicagodrilledthroughmorethan39feetoficeto collectsamplesofbacteriaandalgae.WhenDoran’steambroughtthembackand warmedthemupabittheysprangbacktolife.??3?Doran saidthemicrobeshavebeenage-datedat2800yearsoldbutevenolder microbesmaylivedeeperintheicesheetsealingthelakeandinthebriny waterbelowtheice.?Thatdeepericeandthewateritselfwillbe cautiouslysampledinalaterexpeditionthatwilltesttechniquesthatmayone daybeusedonMars.??4?CalledLakeVidathe 4.5-square-kilometerbodyisoneofaseriesoflakeslocatedintheMcMurdoDry ValleysofAntarcticasome2200kilometersduesouthofNewZealand.Thislake hasbeenknownsincethe1950sbutpeopleignoreditbecausetheythoughtit wasjustabigblockofice.Whileatthesiteforotherresearchinthe1990s Doranandhiscolleaguessentradarsignalsintotheclearicecoveringthelake andweresurprisedtofindthat62feetbelowtherewasapoolofliquidwater thatwasaboutseventimesmoresaltythanseawater.??5 ?Thatpromptedtheresearcherstoreturnin1996withequipmenttodrilla holedowntowithinafewfeetofthewaterlayer.Atthebottomofthishole researchersharvestedspecimensof.algaeandbacteria.??6 ?Theresearcherswillreturnin2004equippedwithinstrumentsthatare sterilized.Theywillthendrillthroughthefull62feetoficeandsamplesome ofthebrinywaterfromthelakeforanalysis.Thewaterspecimenwillbe culturedtoseeifitcontainslife.Specimensfromthewaterareexpectedtobe evenolderthanthelifeformsextractedfromtheicecovering.Paragraph2______ A?SignificanceofTestingTechniquesforSamplingMicrobesintheDeepleeSheet B?SpecialFeaturesofLakeVida C?LaterExpeditiononMars D?2004RevisitPlannedforCollectingLakeWaterSpecimens E?AntarcticFrozenLifeSampledandRevived F?AccidentalDiscoveryoflee-sealedLakeWaterinAntarctica
{{*HTML*}}阅读下面这篇短文短文后有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个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 ?????????? ??????????? ?{{B}}IcyMicrobes{{/B}}??1?Inicethathassealedasalty Antarcticlakeformorethan2800yearsscientistshavefoundfrozenbacteria andalgaethatreturnedtolifeafterthawing.Theresearchmayhelpinthe searchforlifeonMarswhichisthoughttohavesubsurfacelakesof ice.??2?AresearchteamledbyPeterDoranofthe UniversityOfIllinoisatChicagodrilledthroughmorethan39feetoficeto collectsamplesofbacteriaandalgae.WhenDoran’steambroughtthembackand warmedthemupabittheysprangbacktolife.??3?Doran saidthemicrobeshavebeenage-datedat2800yearsoldbutevenolder microbesmaylivedeeperintheicesheetsealingthelakeandinthebriny waterbelowtheice.?Thatdeepericeandthewateritselfwillbe cautiouslysampledinalaterexpeditionthatwilltesttechniquesthatmayone daybeusedonMars.??4?CalledLakeVidathe 4.5-square-kilometerbodyisoneofaseriesoflakeslocatedintheMcMurdoDry ValleysofAntarcticasome2200kilometersduesouthofNewZealand.Thislake hasbeenknownsincethe1950sbutpeopleignoreditbecausetheythoughtit wasjustabigblockofice.Whileatthesiteforotherresearchinthe1990s Doranandhiscolleaguessentradarsignalsintotheclearicecoveringthelake andweresurprisedtofindthat62feetbelowtherewasapoolofliquidwater thatwasaboutseventimesmoresaltythanseawater.??5 ?Thatpromptedtheresearcherstoreturnin1996withequipmenttodrilla holedowntowithinafewfeetofthewaterlayer.Atthebottomofthishole researchersharvestedspecimensof.algaeandbacteria.??6 ?Theresearcherswillreturnin2004equippedwithinstrumentsthatare sterilized.Theywillthendrillthroughthefull62feetoficeandsamplesome ofthebrinywaterfromthelakeforanalysis.Thewaterspecimenwillbe culturedtoseeifitcontainslife.Specimensfromthewaterareexpectedtobe evenolderthanthelifeformsextractedfromtheicecovering.Paragraph4______
JohnHansonhelped{{U}}draft{{/U}}instructionsforMaryland'sdelegatestotheStampActCongress.
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