2019年6月六级(第三套)真题+答案解析

2019年6月英语六级真题试卷（第三套）PartI Writing (30minutes)Directions:Forthispart,youareallowed30minutestowriteanessayontheimportanceofmotivationandmethodsinlearning.Youcanciteexamplestoillustrateyourviews.Youshouldwriteatleast150wordsbutnomorethan200words.PartⅡ ListeningComprehension (30minutes)特别说明：由于2019年6月六级考试全国共考了2套听力，第三套真题听力试题与第1套或第2套内容一致，因此在本套真题中不再重复出现。PartⅢ ReadingComprehension (40minutes)SectionADirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.Questions26to35arebasedonthefollowingpassage.Steelisvaluedforitsreliability,butnotwhenitgetscold.Mostformsofsteel26becomebrittleattemperaturesbelowabout-25℃unlesstheyaremixedwithothermetals.Now,though,anoveltypeofsteelhasbeendevelopedthatresists27atmuchlowertemperatures,whileretainingitsstrengthandtoughness-withouttheneedforexpensive28.Steel'sfragilityatlowtemperaturesfirstbecameamajorconcernduringtheSecondWorldWarAfterGermanU-boatstorpedoed(用鱼雷攻击)numerousBritishships,a2700-strongfleetofcheap-and-cheerful“Libertyships”wasintroducedtoreplacethelostvessels,providingalifelinefor29British.Butthesteelshellsofhundredsoftheships30intheicynorthAtlantic,and12brokeinhalfandsank.Brittlenessremainsaproblemwhenbuildingsteelstructuresincoldconditions,suchasoilrigsintheArctic.Soscientistshave31tofindasolutionbymixingitwithexpensivemetalssuchasnickel.YuujiKimuraandcolleaguesinJapantriedamorephysical32Ratherthanaddingothermetals,theydevelopedacomplexmechanicalprocessinvolvingrepeatedheatingandveryseveremechanicaldeformation,knownastempforming.Theresultingsteelappearstoachieveacombinationofstrengthandtoughnessthatis33tothatofmodemsteelsthatareveryrichinalloycontentand,therefore,veryexpensive.Kimura'steamintendstouseitstempformedsteeltomakeultra-highstrengthparts,suchasbolts.Theyhopetoreduceboththenumberof34neededinaconstructionjobandtheirweight1—byreplacingsolidsupportswith 35 tubes,forexample.Thiscouldreducetheamountofsteelneededtomakeeverythingfromautomobilestobuildingsandbridges.abruptlyabruptlyadditivesapproachardentlybesiegedchannelcomparablecomponentscrackedfractureshollowrelevantreshuffledstrivedviolentSectionBDirections:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.AnswerthequestionsbymarkingthecorrespondingletteronAnswerSheet2.Thefutureofpersonalsatellitetechnologyishere—arewereadyforit?Satellitesusedtobetheexclusiveplaythingsofrichgovernmentsandwealthycorporations.Butincreasingly,asspacebecomesmoredemocratized,theyarecomingwithinreachofordinarypeople.Justlikedrones(无人机)beforethem,miniaturesatellitesarebeginningtofundamentallytransformourconceptionsofwhogetstodowhatupaboveourheads.AsarecentreportfromtheNationalAcademyofScienceshighlights,thesesatellitesholdtremendouspotentialformakingsatellite-basedsciencemoreaccessiblethaneverbefore.However,asthecostofgettingyourownsatelliteinorbitdropssharply,therisksofirresponsibleusegrow.Thequestionhereisnolonger“Canwe?”but“Shouldwe?”Whatarethepotentialdownsidesofhavingasliceofspacedenselypopulatedbyequipmentbuiltbypeoplenottraditionallylabeledas“professionals”?Andwhatwouldtheresponsibleandbeneficialdevelopmentanduseofthistechnologyactuallylooklike?Someoftheanswersmaycomefromanonprofitorganizationthathasbeenbuildingandlaunchingamateursatellitesfornearly50years.Havingyourpersonalsatellitelaunchedintoorbitmightsoundlikeanideastraightoutofsciencefiction.Butoverthepastfewdecadesauniqueclassofsatelliteshasbeencreatedthatfitsthebill:CubeSats.The“Cube”heresimplyreferstothesatellite'sshape.ThemostcommonCubeSatisa10cmcube,sosmallthatasingleCubeSatcouldeasilybemistakenforapaperweightonyourdesk.Thesemini-satellitescanfitinalaunchvehicle'sformerly“wastedspace.”MultiplescanbedeployedincombinationformorecomplexmissionsthancouldbeachievedbyoneCubeSatalone.Withintheircompactbodiestheseminutesatellitesareabletohousesensorsandcommunicationsreceivers/transmittersthatenableoperatorstostudyEarthfromspace,aswellasspacearoundEarth.They'reprimarilydesignedforLowEarthOrbit(LEO)-aneasilyaccessibleregionofspacefromaround200to800milesaboveEarth,wherehuman-tendedmissionsliketheHubbleSpaceTelescopeandtheInternationalSpaceStation(ISS)hangout.Buttheycanattain2moredistantorbits;NASAplansformostofitsfutureEarth-escapingpayloads(tothemoonandMarsespecially)tocarryCubeSats.Becausethey'resosmallandlight,itcostsmuchlesstogetaCubeSatintoEarth'sorbitthanatraditionalcommunicationsorGPSsatellite.Forinstance,aresearchgrouphereatArizonaStateUniversityrecentlyclaimedtheirdevelopmentalsmallCubeSatscouldcostaslittleas$3,000toputinorbit.Thisdecreaseincosta11owsresearchers,hobbyistsandevenelementaryschoolgroupstoputsimpleinstrumentsintoLEOorevenhavingthemdeployedfromtheISS.ThefirstCubeSatwascreatedintheearly2000s,asawayofenablingStanfordgraduatestudentstodesign,build,testandoperateaspacecraftwithsimilarcapabilitiestotheUSSR'sSputnik(前苏联的人造卫星).Sincethen,NASA,theNationalReconnaissanceOfficeandevenBoeinghavealllaunchedandoperatedCubeSats.Therearcmorethan130currentlyinoperation.TheNASAEducationalLaunchofNanoSatelliteprogram,whichoffersfreelaunchesforeducationalgroupsandsciencemissions,isnowopentoU.S.nonprofitcorporationsaswell.Clearly,satellitesarenotjustforrocketscientistsanymore.TheNationalAcademyofSciencesreportemphasizesCubeSats'importanceinscientificdiscoveryandthetrainingoffuturespacescientistsandengineers.YetitalsoacknowledgesthatwidespreaddeploymentofLEOCubeSatsisn'trisk-flee.Thegreatestconcerntheauthorsraiseisspacedebris-piecesof“junk”thatorbittheearth,withthepotentialtocauseseriousdamageiftheycollidewithoperationalunits,includingtheISS.Currently,therearen'tmanyCubeSatsandthey'retrackedclosely.YetasLEOopensuptomoreamateursatellites,theymayposeanincreasingthreat.Asthereportauthorspointout,evennear-missesmightleadtothe“creationofaburdensomeregulatoryframeworkandaffectthefuturedispositionofscienceCubeSats.”CubeSatresearcherssuggestthatnow'sthetimetoponderunexpectedandunintendedpossibleconsequencesofmorepeoplethaneverhavingaccesstotheirownsmallsliceofspace.InanerawhenyoucansimplybuyaCubeSatkitofftheshelf,howcanwetrustthesatellitesoverourheadsweredevelopedwithgoodintentionsbypeoplewhoknewwhattheyweredoing?Some“expertamateurs”inthesatellitegamecouldprovidesomeinspirationforhowtoproceedresponsibly.In1969,theRadioAmateurSatelliteCorporation(AMSAT)wascreatedinordertofosterhamradioenthusiasts'(业余无线电爱好者)participationinspaceresearchandcommunication.Itcontinuedtheefforts,begunin1961,byProjectOSCAR-aU.S.-basedgroupthatbuiltandlaunchedtheveryfirstnongovernmentalsatellitejustfouryearsafterSputnik.Asanorganizationofvolunteers,AMSATwasputting“amateur”satellitesinorbitdecadesbeforethecurrentCubeSatcraze.Andovertime,itsmembershavelearnedathingortwoaboutresponsibility.Here,open.sourcedevelopmenthasbeenacentralprinciple,Withintheorganization,AMSAThasaphilosophyofopensourcingeverythingmakingtechnicaldataonallaspectsoftheirsatellitesfullyavailabletoeveryoneintheorganization,andwhenpossible,thepublic.AccordingtoamemberoftheteamresponsibleforFOX1-A,AMSAT'sfirstCubeSat,thismeansthattheresnowaytosneaksomethinglikeexplosivesoranenergyemitterintoanamateursatellitewheneveryonehasaccesstothedesignsandimplementation.However,they'remorecautiousaboutsharinginformationwithnonmembers,astheorganizationguardsagainstothersdevelopingtheabilitytohijackandtakecontroloftheirsatellites.Thisformof“self-governance”ispossiblewithinlong-standingamateurorganizations3that,overtime,areabletobuildasenseofresponsibilitytocommunitymembers,aswellassocietyingeneral.Butwhathappenswhennewplayersemerge,whodon'thavedeeprootswithintheexistingculture?Hobbyistsandstudentsaregainingaccesstotechnologieswithoutbeingpartofalong-standingamateurestablishmentThey'restillconstrainedbyfunders,launchprovidersandaseriesofregulationsallofwhichreininwhatCubeSatdeveloperscanandcannotdo.Butthere'sadangerthey'reill-equippedtothinkthroughpotentialunintendedconsequences.Whattheseunintendedconsequencesmightbeisadmittedlyfarfromclear.Yetweknowinnovatorscanberemarkablycreativewithtakingtechnologiesinunexpecteddirections.Thinkofsomethingasseeminglybenignasthecellphonewehavemicrofinanceandtext-basedsocialnetworkingatoneendofthespectrumandimprovisedexplosivedevicesattheother.ThisiswhereacultureofsocialresponsibilityaroundCubeSatsbecomesimportant-notsimplytoensurethatphysicalrisksareminimized,buttoengagewithamuchlargercommunityinanticipatingandmanaginglessobviousconsequencesofthetechnology.Thisisnotaneasytask.Yetthe'evidencefromAMSATandotherareasoftechnologydevelopmentsuggeststhatresponsibleamateurcommunitiescananddoemergearoundnoveltechnologies.Thechallengehere,ofcourse,isensuringthatwhatanamateurcommunitiesconsiderstoberesponsible,actuallyis.Here'swherethereneedstobeamuchwiderpublicconversationthatextendsbeyondgovernmentagenciesandscientificcommunitiestoincludestudents,hobbyists,andanyonewhomaypotentiallystandtobeaffectedbytheuseofCubeSattechnology.Giventheeasieraccessibilitytospace,itistimetothinkabouthowtopreventmisuseofsatellites.Agroupofmini-satellitescanworktogethertoaccomplishmorecomplextasks.Thegreateraccessibilityofmini-satellitesincreasestherisksoftheirirresponsibleuse.EvenschoolpupilscanhavetheirCubeSatsputinorbitowingtotheloweredlaunchingcost.AMSATiscarefulaboutsharinginformationwithoutsiderstopreventhijackingoftheirsatellites.NASAofferstolaunchCubeSatsfreeofchargeforeducationalandresearchpurposes.Evenwithconstraints,itispossibleforsomecreativedeveloperstotaketheCubeSattechnologyindirectionsthatresultinharmfuloutcomes.Whilemakingsignificantcontributionstospacescience,CubeSatsmayposehazardstootherspacevehicles.Mini-satellitesenableoperatorstostudyEarthfromLEOandspacearoundit.AMSAToperatesontheprincipleofhavingallitstechnicaldataaccessibletoitsmembers,preventingtheabuseofamateursatellites.SectionCDirections:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsor4unfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.PassageOneQuestions46to50arebasedonthefollowingpassage.WhenIre-enteredthefull-timeworkforceafewyearsagoafteradecadeofsolitaryself-employment,therewasonethingIwaslookingforwardtothemost:theopportunitytohaveworkfriendsonceagain.Itwasn’tuntilIenteredthecorporateworldthatIrealized,formeatleast,beingfriendswithcolleaguesdidn’temergeasapriorityatall.Thisissurprisingwhenyouconsidertheprevailingemphasisbyscholarsandtrainersandmanagersontheimportanceofcultivatingcloseinterpersonalrelationshipsatwork.Somuchresearchhasexploredthewayinwhichcollegial(同事的)tiescanhelpovercomearangeofworkplaceissuesaffectingproductivityandthequalityofworkoutputsuchasteam-basedconflict,jealousy,undermining,anger,andmore.Perhapsmyexpectationsoflunches,water-coolergossipandcaring,deep-and-meaningfulconversationswerealegacyofthelasttimeIwasinthatkindofofficeenvironment.Whereasnow,asIneartheendofmyfourthdecade,Irealizeworkcanbefullyfunctionalandentirelyfulfillingwithoutneedingtobebestmateswiththepeoplesittingnexttoyou.Inanacademicanalysisjustpublishedintheprofoundly-respectedJournalofManagement,researchershavelookedattheconceptof“indifferentrelationships”.It’sasimpletermthatencapsulates(概括)thefactthatrelationshipsatworkcanreasonablybenon-intimate,inconsequential,unimportantandeven,dareIsayit,disposableorsubstitutable.Indifferentrelationshipsareneitherpositivenornegative.Thelimitedresearchconductedthusfarindicatesthey’reespeciallydominantamongthosewhovalueindependenceovercooperation,andharmonyoverconfrontation.Indifferenceisalsothepreferredoptionamongthosewhoaresociallylazy.Maintainingrelationshipsoverthelongtermtakeseffort.Forsomeofus,toomucheffort.Asnotedabove,indifferentrelationshipsmaynotalwaysbethemosthelpfulapproachinresolvingsomeoftheissuesthatpopupatwork.Buttherearenonethelessseveralempiricallyprovenbenefits.Oneofthoseisefficiency.Lesstimechattingandsocializingmeansmoretimeworkingandchurning(产).Theotherisself-esteem.Ashumanbeings,we’reprimedtocompareourselvestoeachotherinwhatisananxiety-inducingphenomenon.Apparently,welookdownonacquaintancesmoresothanfriends.Sincetheformerismostcommonamongthoseinclinedtowardsindifferentrelationships,theirpredominancecanbolsterindividuals’senseofself-worth.Egoaside,athirdadvantageisthattheemotionalneutralityofindifferentrelationshipshasbeenfoundtoenhancecriticalevaluation,tostrengthenone’sfocusontaskresolution,andtogaingreateraccesstovaluableinformation.Noneofthatmightbeasfunasafter-worksocializingbut,hey,I’lltakeitanyway.5Whatdidtheauthorrealizewhenhere-enteredthecorporateworld?Makingnewfriendswithhisworkmateswasnotaseasyashehadanticipated.Cultivatingpositiveinterpersonalrelationshipshelpedhimexpelsolitaryfeelings.Workinginthecorporateworldrequiresmoreinterpersonalskillsthanself-employment.Buildingcloserelationshipswithhiscolleagueswasnotasimportantashehadexpected.Whatdowelearnfrommanystudiesaboutcollegialrelationships?Inharmoniousrelationshipshaveanadverseeffectonproductivity.Harmoniousrelationshipsarewhatmanycompaniesaimtocultivate.Closecollegialrelationshipscontributeverylittletoproductquality.Conflictingrelationshipsintheworkplaceexistalmosteverywhere.Whatcanbeinferredaboutrelationshipsatworkfromanacademicanalysis?Theyshouldbecultivated.Theyarevirtuallyirrelevant.Theyarevitaltocorporateculture.Theyshouldbereasonablyintimate.Whatdoestheauthorsayaboutpeoplewhoaresociallylazy?TheyfeelUncomfortablewhenengaginginsocialinteractions.Theyoftenfindthemselvesinconfrontationwiththeircolleagues.TheyareUnwillingtomakeeffortstomaintainWorkplacerelationships.Theylackbasiccommunicationskillsindealingwithinterpersonalissues.Whatisoneofthebenefitsofindifferentrelationships?TheyprovidefunatWork.Theyhelpcontrolemotions.Theyhelpresolvedifferences.TheyimproveWorkefficiency.PassageTwoQuestions51to55arebasedonthefollowingpassage.Inafewdecades,artificialintelligence(AI)willsurpassmanyoftheabilitiesthatwebelievemakeusspecial.Thisisagrandchallengeforourageanditmayrequirean“irrational”response.OneofthemostsignificantpiecesofnewsfromtheUSinearly2017wastheeffortsofGoogletomakeautonomousdrivingareality.Accordingtoareport,Google’sself-drivingcarsclocked1,023,330km,andrequiredhumanintervention124times.Thatisoneinterventionaboutevery8,047kmofautonomousdriving.Butevenmoreimpressiveistheprogressinjustasingleyear:humaninterventionsfellfrom0.8timesperthousandmilesto0.2,a400%improvement.Withsuchprogress,Google’scarswilleasilysurpassmyowndrivingabilitylaterthisyear.Drivingonceseemedtobeaveryhumanskill.Butwesaidthataboutchess,too.Thenacomputerbeatthehumanworldchampionrepeatedly.TheboardgameGotookoverfromchessasanewtestforhumanthinkingin2016,whenacomputerbeatoneoftheworld’sleadingprofessionalGoplayers.Withcomputersconqueringwhatusedtobedeeplyhumantasks,whatwillitmeaninthefuturetobehuman?Iworryaboutmysix-year-oldsonWhatwillhisplacebe6inaworldwheremachinesbeatusinoneareaafteranother?He’llnevercalculatefaster,neverdrivebetter,orevenflymoresafely.Actually,itallcomesdowntoafairlysimplequestion:What’ssospecialaboutus?Itcan’tbeskillslikearithmetic,whichmachinesalreadyexcelin.Sofar,machineshaveaprettyhardtimeemulatingcreativity,arbitraryenoughnottobepredictedbyacomputer,andyetmorethansimplerandomness.Perhaps,ifwecontinuetoimproveinformation-processingmachines,we’llsoonhavehelpfulrationalassistants.Sowemustaimtocomplementtherationalityofthemachine,ratherthanto