大学英语六级109-真题无答案

大学英语六级109(总分429,做题时间132分钟)PartIWriting(30minutes)1.Forthispart,youareallowed30minutestowritealettertoapplyforaposition.Youshouldwriteatleast150wordsfollowingtheinstructionsgivenbelow:假如你叫方小宇，你在《北京青年报》看到以下招聘广告，请就此写一封求职信：X公司诚聘文秘一员，要求如下：本科以上学历；有良好的沟通和协调能力；精通英语和计算机者优先。应聘者请将简历寄至：北京市中关村北路号紫光大厦人力资源部，邮编10008lSSS_TEXT_QUSTIPartIIReadingComprehension(SkimmingandScanning)(15minutes)Directions:Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsattachedtothepassage.Forquestions1-7,mark：Y(forYES)DesignsonlifeEvenifyou''rethinkingbig,youusuallyhavetostartsmall.ItisespeciallytrueforagroupofSwissstudentswhofoundthatbigmeanscountingtoinfinity.Theteamwasdrawingupablueprintfortheworld''sfirstcountingmachinemadeentirelyofbiologicalparts.Althoughtheyhadtheirsightsonloftiernumbers,theyoptedtogonohigherthantwo.Iftheplanworked,itwouldbeaproof-of-principleforamuchlargertallyingdevice(计算装置).Thegroup,fromtheFederalInstituteofTechnology(ETH)inZurich,wasoneof17teamspresentingtheirprojectsatthefirstinternationalIntercollegiateGeneticallyEngineeredMachine(IGEM)competition,heldattheMassachusettsInstituteofTechnology(MIT)inCambridgeon5and6November.Theeventattractedstudentsfromallovertheworldtodesignandbuildmachinesmadeentirelyfrom**ponentssuchasgenesandproteins.TheydrewupgranddesignsforbacterialEtch-a-Sketches,photosensitivet-shirts,thermometersandsensors.Andifnoneofthedesigns**pletely,thatwasmorebecauseofthelimitationsofthenew-bornscienceofsyntheticbiologythananylackofenthusiasm,creativityorhardwork.Syntheticbiology

Syntheticbiologyaimstomergeengineeringapproacheswithbiology.Researchersworkingatthemostbasiclevelarecopyingsimplebiologicalprocesses,suchastheproductionofaproteinfromagene.Theybreaktheprocessdowninto**ponentelements,suchasageneandthepiecesofDNAandothermoleculesthatcontrolitsactivity.Theythenstringtheseelementstogethertobuildamoduletheyknowwillbehaveinaparticularway—say,oscillatebetweenproducingandnotproducingaprotein,orproduceaproteinthatcanswitchanothermoduleonoroff.Itisthesekindsofcomponents—oscillators(震荡器)andswitches—thatengineersorderfromsuppliersandlinktogethertobuild**plexelectroniccircuitsandmachines.Syntheticbiologistsaretryingtodevelopasimilararmouryof**ponents,dubbedBioBricks,thatcanbeinsertedintoanygeneticcircuittocarryoutaparticularfunction.ScientistsatMIThaveestablishedaRegistryofStandardBiologicalParts,acatalogueofBioBricksthattheoreticallycanbeorderedandpluggedintoacell,justasresistorsandtransistorscanbeorderedandpluggedintoelectroniccircuitry.Butitishardtofindscientistswhoaretrainedandinterestedinbothbiologyandengineeringtofuelthedevelopmentofthisnewscience.So,liketrueengineers,thefoundingsyntheticbiologistsaretryingtobuildtheirfuturecolleaguesfromthegroundup.Todoso,they**mandeeredatime-honouredengineeringtradition:the**petition.TheIGEMeventbeganlifeasaprojectclassforMITstudentsin2003.Lastyear,itwasthrownopentootherUSuniversities,andthisyearitwentinternational.Theorganizershopetoattract30to50teamsnextyear,includingsomefromAsia.CompetitivecultureMuchlikethe**petitionsthattapintostudents''desiretobuildsomethingcool,theIGEMjamborees(际性少年大会)firetheparticipants''naturalcuriosity—hopefullyencouragingbiologiststolearnsomethingfromengineers,andviceversa."Ifyouwanttomakesomethinginthisfield,youcan''tjustgetsomeglueoutandsticktwocellstogether,"saysRandyRettbergofMIT,whoorganized**petition."Youhavetolearnsomebiologytodoit,andit''seasytodothatduring**petitionbecauseyouknowexactlywhyyou''redoingit."Thisyear,theteamspresentedaneclecticselectionofdesigns.StudentsfromtheUniversityofCambridge,UK,triedtomakeacircuitthatcouldcontrolthemovementofEscherichiacolibacteria.Theyaimedtoengineerthebacteriatocontainaswitchgoverningtheirsensitivitytothesugarmaltose.Withtheswitchoff,the

microbeswouldignorethesugar.Trippingtheswitchwouldmakethebacteriasensitivetothesugarandinducethemtomovetowardsit.Intheend,thegroup—likealmosteveryotherentrant—had**pletingassemblyofitsgeneticpartsintime.Manyoftheotherstudentsalsotackledproblemsrelatedto**municationandmotion.TheteamfromPennsylvaniaStateUniversitydesignedabacterialrelayrace,whichithopedwouldbringsyntheticbiologyintotherealmofsports—aninnovationthatwonitanawardfortheBestNewSportattheendof**petition.AteamfromtheUniversityofOklahoma''sAdvancedCenterforGenomeTechnologyinNormantriedtoexploitthesugararabinoseasanenginetodrivebacterialmotion.TeamsfromtheUniversityofTorontoandtheUniversityofCalifornia,SanFrancisco,builtconceptsforbacterialthermometers;andgroupsfromHarvard,TorontoandPrincetondesignedbacterialillustratorsandEtch-a-Sketches.Detectionandsensingwerealsopopular,withgroupsfromDavidsonCollegeandMITfocusinginthisarea.AndalabattheCaliforniaInstituteofTechnologytackledaproblemraisedatlastyear''sevent:designingbiologicalmemory.StudentsfromtheUniversityofTexasdemonstratedtheworld''sfirstbacterialphotographysystem.TheteamengineeredaplateofE.colisothattheywouldrespondtolightandhassinceusedtheinventiontotakenumerousphotos,includingshotsofthegroup''sadviser,AndrewEllington.PiecebypieceAswellashelpingstudentstobridgethedividebetweendisciplines,**petitiongavethemfirsthandexperienceoflifeinthelab.Allhitobstaclesassemblingtheirpartsintocoherentdevices.Itisstilldifficulttodissectthedifferent**ponentsofthecircuits,stitchthemtogetherandgetthemtoworkinlivecells.AsEmanuelNazarethreported,thestudentsalllearnedonehardtruth:"Youcanneverallocateenoughtimeforassembly."Thishintsatalargerprobleminsyntheticbiology.Thefieldaimstobuildupalibraryofpartsthatcanbeinterchangedincircuitswithminimaleffort.ButthatgoalisnotyetarealityasDNAsequencingandassemblingtechnologiesarestillabittooexpensive**plex."We''renotorganizedat**munitylevelaroundfabrication,"saysMIT''sDrewEndy,oneofthefoundersofthefieldandoftheRegistryofStandardBiologicalParts.Thesedifficultiesneedtobe**ebefore**ponentswillbeaseasytodeployastheirengineeringcounterparts.Anotherlearningexperiencewasthereminderthat,evenstrippeddowntoits**ponents,biologycanbecomplexandunpredictable.A

teamfromtheUniversityofCalifornia,Berkeley,forinstance,triedtodesignanentirelynewwayforcellstocommunicate.Thisisapotentiallyimportantbecauseitwouldenablecellstosendandreceiveinformation,forminginterlockingcellcircuitsinsteadofrelyingonsimplegenecircuitsbuiltinsinglecells.Theteamhopedtoexploitanaturalmethodusedbybacteriatoexchangegeneticinformation.Inthis,twobacteriaconnecttheirrespectivecellwallstogetherusingastructurecalledapilus(毛).Thegroupmanagedtotriggertheconnectionresponsewithsyntheticcircuits.Butthebacteriaturnedouttobesoeagertojoinupthattheydidsoinhugeandoncetheydid,itwashardtoseparatethem."Theydon''treallyconjugateoneatatime,"saidteamspokeswomanMelissaLi."Theycango,buttheycan''tstop."ThelivingendAsRettbergpointsout,therearealotofsceptics."There''sabigquestion,whichis:canyoubuildsimplebiologicalsystemsoutofinterchangeablepartsandmakethemworkinlivingcells?"hesays."Wethinkyoucan,butthere''salotofpeoplewhothinktheotherwayandsaybiologyissimplysocomplexyoucan''tdoit."Giventheseconcerns,itisnosurprisethatresearchershavedecidedtokeepthingsassimpleaspossible.AsRobinsaidinintroducingtheproject:"Inthebeginningwetalkedaboutcountingtoinfinity,butwethoughtmaybewe''dstartbycountingtotwo."Despitethisnarrowedscope,thestudentsfacedaformidablechallenge.Theydesignedaseriesofdevices:thefirsttakesinasignal,whichisthenpassedtoaneventprocessor.Thisprocessor—ageneticcircuit—splitsthesignalinto**ponents.Athirdcircuitdoesthecountingandgeneratesaread-out.SSS_SINGLE_SEL2.AgroupofSwissstudentsdesignedtheworld''sfirstcountingmachinemadeentirelyofbiologicalparts.AYBNCNGSSS_SINGLE_SEL3.Syntheticbiologyisaverynewsciencewhichhasmanylimitations.AYBN

CNGSSS_SINGLE_SEL4.Thegoalofsyntheticbiologyistocombineengineeringmethodswithbiology.AYBNCNGSSS_SINGLE_SEL5.Therearemanyscientistswhoareskilledinbothbiologyandengineering.AYBNCNGSSS_TEXT_QUSTI6.AccordingtoRandyRettberg,itiseasyto________during**petitionbecauseyouknowexactlywhyyou''redoingit.SSS_TEXT_QUSTI7.Manystudentsinthe**petitiontriedtodealwithproblemsrelatedtobacterial________.SSS_TEXT_QUSTI8.StudentsfromtheUniversityofTexasusedtheworld''sfirstbacterialphotographysystemtotake________.SSS_TEXT_QUSTI9.TwogoalsoftheIGEMaretohelpstudentstobridge________andtogivethem________.

SSS_TEXT_QUSTI10.AteamfromtheUniversityofCaliforniatriedtoexploitanaturalmethodusedbybacteriato________.SSS_TEXT_QUSTI11.Tomakeabiologicaltallyingdevice,thestudentsdesignedaseriesofdevices:thefirstdevice________;thesecondis________andthethird________.ListeningComprehension(35minutes)SectionADirections:Inthissection,youwillhear8shortconversationsand2longconversations.Attheendofeachconversation,oneormorequestionswillbeaskedaboutwhatwassaid.BoththeconversationanSSS_SINGLE_SEL12.APlayingthepiano.BTyping.CMakingaphotocopy.DTakingapicture.SSS_SINGLE_SEL13.AStudentswithalibrarycardcancheckanybookout.BReferencebooksarenotallowedtobecheckedout.COnlystudentswithalibrarycardcancheckoutreferencebooks.DThenumberofbooksastudentcancheckoutitunlimited.SSS_SINGLE_SEL14.AFiftystudents.BFortystudents.CTwenty-fivestudents.DFifteenstudents.SSS_SINGLE_SEL15.

AItwasinteresting.BItwasfunny.CItwasboring.DItwasterrible.SSS_SINGLE_SEL16.ABoss-Secretary.BClient-Lawyer.CStudent-Teacher.DPatient-Nurse.SSS_SINGLE_SEL17.AHe''sunabletoappearincourt.BHewisheshecouldbeabetterstudent.CHeplaystennisbetterthanshedoes.DHe''snotsoenthusiasticaboutacademics.SSS_SINGLE_SEL18.ATomisunabletohearwell.BTomdidn''tsayanythingatthemeeting.CTomdoesn''tlistentohim.DTomwentoutbeforethemeetingwasover.SSS_SINGLE_SEL19.ATocancelhistrip.BTocatchalaterflight.CTogotobedearly.DToaskforawake-upcall.SectionADirections:Inthissection,youwillhear8shortconversationsand2longconversations.Attheendofeachconversation,oneormorequestionswillbeaskedaboutwhatwassaid.BoththeconversationandthequestionswillbespokenonlyoncSSS_SINGLE_SEL20.AShecan''tfindajob.BShedoesn''tknowhowtomanageabookstore.

CShewantstoquithercurrentjobintheIBMoffice.DShehasnoideawhichofthetwojoboffersisbetter.SSS_SINGLE_SEL21.AShewillearnless.BIttakestoomuchtimetogothere.CIthasnothingtodowithherstudy.DShehasnointerestinmatfield.SSS_SINGLE_SEL22.AAcceptthejobofferfromthebookstore.BAcceptthejobofferfromIBM.CIntheholidayworkinIBMandinthenextschoolyearworkinthebookstore.DGiveupbothoffersandfindanotheroneinthenextschoolyear.SSS_SINGLE_SEL23.ANorthofLosAngeles.BBetweenLosAngelesandSanDiego.CEastofSanDiego.DLosAngeles.SSS_SINGLE_SEL24.ATheyareatypeofinsect.BTheyareakindoffish.CTheyareatypeofbird.DTheyareatypeofpig.SSS_SINGLE_SEL25.AInMarch.BInearlysummer.CInOctober.DInApril.SSS_SINGLE_SEL26.AAbout200miles.

BAbout1,000miles.CAbout7,000miles.DAbout5,000miles.SectionBDirections:Inthissection,youwillhear3shortpassages.Attheendofeachpassage,youwillhearsomequestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromSSS_SINGLE_SEL27.ABecausehewantedtostealaviolinandtakeitoutwithhim.BBecausehewasplanningtocommitacrime.CBecausehewasgoingtoearnmoneybyplayinghisviolininthestreet.DBecausehewasgoingtoreturnhome.SSS_SINGLE_SEL28.AHestoodinthemiddleofthepayment.BHestoodunderabridgenearthestation.CHestoodonabridgenearthestation.DHestoodinfrontofthestation.SSS_SINGLE_SEL29.AHewasfullofconfidenceathissuccess.BHefeltlikeacircusperformer.CHefeltasifhehadbeenperformingallhislife.DHewasdeterminedtotravelroundtheworld.SSS_SINGLE_SEL30.AHowJohnMiltonWroteParadiseLost.BHowJohnMiltonBecameaPoet.CHowJohnMiltonStudiedLatin.DHowJohnMiltonBecameFamous.SSS_SINGLE_SEL31.AIthadastrangeaccent.BItwasdifficulttounderstand.

CIthadastrongItalianaccent.DItwaseasytounderstand.SSS_SINGLE_SEL32.AHewaswell-knownintheworld.BHewasverystrange.CHewascleverandhardworking.DHewasquickatLatinandpoems.SSS_SINGLE_SEL33.AThecolonistspreferredcornbread.BCornwasmoreabundant.CThecolonistsdidnotknowhowtomakewheatbread.DCornbreaddidnotspoilasrapidlyaswheatbreaddid.SSS_SINGLE_SEL34.AItwaseasytoshipfromEngland.BHorsesoccasionallyateitiftherewasnograinavailable.CPeopletookitwiththemwhentheytraveled.DItwaseasytoprepareoveranopenfireintheforests.SSS_SINGLE_SEL35.AIttendstovarygeographically.BItcorrespondstoanindividual''ssocialclass.CItchangesoveraperiodoftime.DItdependsonwhetherornottheindividualisagourmet.SSS_SINGLE_SEL36.ABecauseitwasmorenutritiousthanothertypeofbread.BBecauseitdidnotrequireyeast.CBecauseitstayedfreshforalongtime.DBecauseittooklesstimetobrake.SectionCDirections:Inthissection,youwillhearapassagethreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblank

Knowledgemaybeacquiredthroughconversation,watchingtelevisionortraveling,butthedeepestandmost(36)_________wayisthroughreading.Ifweconsiderthe(37)_________populationoftheworld,wemayconcludethatafewspendtheirwholelivesonacademicreading;manyreadsomethinglightfor(38)_________,andafewdipintosomethingmoreseriousnowandthen;whileverymanymen,womenandchildrenneveradvance(39)_________thesportspageofanewspaper,afashionarticleorthe(40)_________.Ifyouhavelearnttolovebooksasachild,thereadinghabitwillnever(41)_________you.Butifthishasnotbeenyourgood(42)_________,youtendtothinkofreadingasabore.Afew,butveryfew,cometothehabitlateinlife.Inorderto(43)_________toreadonemustbecurious.(44)__________________.Butmanyfailtodosoeitherbecauseofanover-strictsystemwherewhatismostimportantismemoryworkorbecauseofacarelessandlazyonewhereeventhebasicdisciplinesofliteracyareignoredinthesacrednameoffreeexpression.(45)__________________.Andwemayaddtothistheworldwideatmosphereofviolenceanddisorder,theNewDarkAgeinwhichwelivetoday.Manyofusnolongerhavethepeaceofmindnecessarytoaquiethourwithabook.(46)__________________.SSS_FILL37.SSS_FILL38.SSS_FILL39.SSS_FILL40.SSS_FILL41.SSS_FILL42.

SSS_FILL43.SSS_FILL44.SSS_FILL45.SSS_FILL46.SSS_FILL47.ReadingComprehension(ReadinginDepth)(25minutes)SectionADirections:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA,B,CandD.YouReebokexecutivesdonotliketoheartheirstylishathleticshoescalled"footwearforyuppies(雅皮士，少壮高薪职业人士)".TheycontendthatReebokshoesappealtodiversemarketsegments,especiallynowthat**panyoffersbasketballandchildren''sshoesfortheunder-18setandwalkingshoesforoldercustomersnotinterestedinaerobics(健身操)orrunning.Theexecutivesalsopointoutthatthroughrecentacquisitionstheyhaveaddedhikingboots,dressandcasualshoes,andhigh-performanceathleticfootweartotheirproductlines,allofwhichshouldattractnewandvariedgroupsofcustomers.Still,despiteitsemphasisonnewmarkets,Reebokplansfewchangesintheupmarket(高档消费人群的retailingnetworkthathelpedpushsalesto$1billionannually,aheadofallothersportsshoemarketers.Reebokshoes,whicharepricedfrom$27to$85,willcontinuetobesoldonlyinbetterspecialty,sportinggoods,anddepartmentstores,inaccordancewith**pany''sviewthat

consumersjudgethequalityofthebrandbythequalityofitsdistribution.Inthepastfewyears,theMassachusetts-**panyhasimposedlimitsonthenumberofitsdistributors(andthenumberofshoessuppliedtostores),partlyoutofnecessity.AttimestheunexpecteddemandforReeboksexceededsupply,and**panycouldbarelykeepupwithordersfromthedealersitalreadyhad.Thesefulfillmentproblemsseemtobeundercontrolnow,but**panyisstillselectiveaboutitsdistributors.Atpresent,ReebokshoesareavailableinaboutfivethousandretailstoresintheUnitedStates.Reebokhasalreadyanticipatedthatwalkingshoeswillbethenextfitness-relatedcraze,replacingaerobicsshoesthesamewayitsbrightlycolored,softleatherexercisefootwearreplacedconventionalrunningshoes.Throughproductdiversificationandcarefulmarketresearch,ReebokhopestoavoidthedistributionproblemsNikecameacrossseveralyearsago,whenNikemisjudgedthestrengthoftheaerobicsshoecrazeandwasforcedtounloadhugeinventoriesofrunningshoesthroughdiscountstores.SSS_SINGLE_SEL48.OnereasonwhyReebok''smanagerialpersonneldon''tliketheirshoestobecalled"footwearforyuppies"isthat______.AtheybelievethattheirshoesarepopularwithpeopleofdifferentagegroupsBnewproductionlineshavebeenaddedtoproduceinexpensiveshoesCyuppiesusuallyevokesanegativeimageDthetermmakespeoplethinkofprohibitivepricesSSS_SINGLE_SEL49.Reebok''sviewthat"consumersjudgethequalityofthebrandbythequalityofitsdistribution"(Lines4-5,Para.2)impliesthat______.AthequalityofabrandismeasuredbytheservicequalityofthestoresellingitBthequalityofaproductdeterminesthequalityofitsdistributorsCthepopularityofabrandisdeterminedbythestoresthatsellitDconsumersbelievethatfirst-rateproductsareonlysoldbyhigh-qualitystoresSSS_SINGLE_SEL

50.Reebokoncehadtolimitthenumberofitsdistributorsbecause______.AitssupplyofproductsfellshortofdemandBtoomanydistributorswouldcutintoitsprofitsCthereductionofdistributorscouldincreaseitsshareofthemarketDitwantedtoenhanceconsumerconfidenceinitsproductsSSS_SINGLE_SEL51.AlthoughtheReebokCompanyhassolvedtheproblemoffulfillingitsorders,it______.AdoesnotwanttofurtherexpanditsretailingnetworkBstilllimitsthenumberofshoessuppliedtostoresCisstillparticularaboutwhosellsitsproductsDstillcarefullychoosesthemanufacturersofitsproductsSSS_SINGLE_SEL52.WhatlessonhasReeboklearnedfromNike''sdistributionproblems?AAcompanyshouldnotsellitshighqualityshoesindiscountstores.BAcompanyshouldnotlimititsdistributionnetwork.CAcompanyshoulddofollow-upsurveysofitsproducts.DAcompanyshouldcorrectlyevaluatetheimpactofanewcrazeonthemarket.Withonlyabout1,000pandasleftintheworld,Chinaisdesperatelytryingtoclonetheanimalandsavetheendangeredspecies.That''samovesimilartowhataTexasA&MUniversityresearcherhasbeenundertakingforthepastfiveyearsinaprojectcalled"Noah''sArk".Dr.DuaneKraemer,aprofessorinTexasA&M''sCollegeofVeterinaryMedicineandapioneerinembryotransferworkandrelatedprocedures,sayshesalutestheChineseeffortand"Iwishthemallthebestsuccesspossible.It''saworthwhileproject,certainlynotaneasyone,andit''sverymuchlikewhatwe''reattemptinghereatTexasA&M—tosaveanimalsfromextinction."Noah''sArkisaimedatcollectingeggs,embryos,semenandDNAofendangeredanimalsandstoringtheminliquidnitrogen.Ifcertainspeciesshouldbecomeextinct,Kraemersaystherewouldbeenoughofthebasicbuildingblockstoreintroducethespeciesinthefuture.

Itisestimatedthatasmanyas2,000speciesofmammals,birdsandreptileswillbecomeextinctoverthenext100years.Thepanda,nativeonlytoChina,isindangerofbecomingextinctinthenext25years.Thisweek,ChinesescientistssaidtheygrewanembryobyintroducingcellsfromadeadfemalepandaintotheeggcellsofaJapanesewhiterabbit.Theyarenowtryingtoimplanttheembryointoahostanimal.Theentireprocedurecouldtakefromthreetofiveyearstocomplete."Thenucleartransferofonespeciestoanotherisnoteasy,andthelackofavailablepandaeggscouldbeamajorproblem,"Kraemerbelieves."Theywillprobablyhavetodoseveralhundredtransferstoresultinonepregnancy.Ittakesalongtimeandit''sdifficult,butthiscouldbegroundbreakingscienceifitworks.Theyarecertainlynotputtinganylivepandasatrisk,soitisworththeeffort,"addsKraemer,whoisoneoftheleadersoftheMissyplicityProjectatTexasA&M,thefirsteverattemptatcloningadog."Theyaretryingtodosomethingthat''sneverbeendone.Icertainlyapplaudtheireffortandthere''salotwecanlearnfromwhattheyareattemptingtodo.It''saresearchthatisverymuchneeded."SSS_SINGLE_SEL53.Theaimof"Noah''sArk"projectisto________.AimplantembryointoahostanimalsBsalutetheChineseeffortsinsavingpandasCsaveendangeredanimalsfromextinctionDintroduceanewspeciesSSS_SINGLE_SEL54.HowlongwilltheChinesepandacloningprojecttakeaccordingtothepassage?AOneyear.BThreetofiveyears.CTwoyears.DTwenty-fiveyears.SSS_SINGLE_SEL55.WhatcouldbethemajorproblemincloningpandasaccordingtoDr.Kraemer?ALackofavailablepandaeggs.

BLackofhostanimals.CLackofqualifiedresearchers.DLackoffunds.SSS_SINGLE_SEL56.Theword"groundbreaking"(Para.6)canbeinterpretedas________.AessentiallynewBpioneeringCevolutionaryDepoch-makingSSS_SINGLE_SEL57.Thebesttitleforthepassagemaybe________.AChina—theNativePlaceofPandasForeverBChina''sEffortstoClonePandasCChina''sFirstClonedPandaDExploringthePossibilitytoClonePandasMostpeoplehaveheardthesoundofbeesamongflowers.Beeslivealmosteverywhereintheworld—exceptthearcticareas.Manykindsofagriculturedependonthesesmall,socialinsects.Withoutbees,fruitandnutgrowersaswellasmanyotherfarmerswouldnothaveacrop.Therearemorethantwentythousandkindsofbees.Butonlyhoneybeesmakeenoughhoneyforpeopletouse.Honeybeesarehighlyorganizedsocialinsects.Theyworktogetherinagroupcalledacolony(生物群体).Eachcolonylivesinahive.Itcontainsonequeenbee—shelaysalltheeggsfromwhichthemembersofthe**e.Eachcolonyhasonlyafewhundredmales,calleddrones.Themajorityofallbeesinacolonyarefemaleworkers.Beesevenhaveaspecialstomach,calledahoneystomach.Itisusedtostoresweetfluidthatthebeesgatherfromflowers.Beesalsohavelonghairsontheirbodyandlegs.Thesehairscapturepollen(花粉)asbeesgofromflowertoflower.Someofthepollenistakenbacktothehive.Some,however,ispassedtothenextflower.Thisishowmanyplantsarefertilized.Pollenisthereproductivematerialofplants.Manyimportantagriculturalcropsdependonbeesforfertilization.Insidetheirhives,beesstoresweetfluidfromflowers,callednectar(花蜜),andalsopollen.Theymayevengathernectarfromsomeotherkindsofinsects.Thesekindsofnectararealsostoredinthehive.Beeshaveorgansthatproduceafattysubstancecalledwax.

Theyusewaxtobuildstructuresinthehivethatholdeggsandstorehoney.Beesmakehoneythroughaprocess.Theyaddliquidfromtheirownmouthstothenectartheyhavestoredinthehive.Theliquidbreaksdownthenectarintosimplesugars.Asthehoneyisstored,itdries.Itbecomesthickeranddarker.Honeycanbeverythinandlightincolorordarkandthick.Howthehoneylooksdependsonthekindsofflowersusedbythebees.Mosthoneyistheeasilyrecognizedgoldencolor.Althoughbeesareoftenthoughtofashoney-makers,theyprovideasurprisingnumberofproducts.Also,theirgreatesteconomicvalueisinfertilizingcrops—notinmakinghoney.SSS_TEXT_QUSTI58.Therearethreekindsofbeesinahoneybees''colony,namely__________.SSS_TEXT_QUSTI59.Thefunctionofahoneystomachisto__________.SSS_TEXT_QUSTI60.Howdobeeshelpplantsinfertilization?__________.SSS_TEXT_QUSTI61.__________isthematerialforbeestobuildtheirhives.SSS_TEXT_QUSTI62.Whatmakestheappearancesofonekindofhoneydifferfromanother?__________.Cloze(15minutes)Directions:Thereare20blanksinthefollowingpassage.Foreach

blanktherearefourchoicesmarkedA,B,CandD.YoushouldchoosetheONEthatbestfitsintothepassage.Sometheoristsviewchildrenaspassivereceiversofexperience;othersconsiderthem【B1】inorganizing,structuring,andinsome【B2】.creatingtheirworlds.Ascientistwhoconsiderschildrento