2018年大学英语四级真题答案及解析

('2018年6月大学英语四级真题（第1套)PartIWriting（30minutes）Directions:Forthispart,youareallowed30minutestowriteashortessayontheimportanceofreadingabilityandhowtodevelopit.Youshouldwriteatleast120wordsbutnomorethan180words.________________________________________________________________________________________________________________________________________________________________________________________________________________________PartIIListeningComprehension(25minutes)SectionADirections:Inthissection,youwillhearthreenewsreports.Attheendofeachnewsreport,youwillheartwoorthreequestions.Boththenewsreportandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions1and2arebasedonthenewsreportyouhavejustheard.1.A)Thereturnofabottledmessagetoitsowner\'sdaughter.B)ANewHampshireman\'sjokewithfriendsonhiswife.C)Afather\'smessageforhisdaughter.D)Thehistoryofacentury-oldmotel.2.A)Shewantedtoshowgratitudeforhiskindness.B)Shewantedtohonorherfather\'spromise.C)Shehadbeenaskedbyherfathertodoso.D)Shewasexcitedtoseeherfather\'shandwriting.Questions3and4arebasedonthenewsreportyouhavejustheard.3.A)Peoplewereconcernedaboutthenumberofbees.B)SeveralcasesofZikadiseasehadbeenidentified.C)Twomillionbeeswereinfectedwithdisease.D)Zikavirushaddestroyedsomebeefarms.4.A)Itapologizedtoitscustomers.B)Itwasforcedtokillitsbees.C)Itlostahugestockofbees.D)Itlost2.5milliondollars.Questions5to7arebasedonthenewsreportyouhavejustheard.5.A)Itstayedintheairforabouttwohours.B)Ittookoffandlandedonafootballfield.C)Itprovedtobeofhighcommercialvalue.D)Itmadeaseriesofsharpturnsinthesky.6.A)Engineeringproblems.B)Theairpollutionitproduced.C)Inadequatefunding.D)Theoppositionfromthemilitary.7.A)Itusesthelatestaviationtechnology.B)Itfliesfasterthanacommercialjet.-C)Itisasafermeansoftransportation.D)Itismoreenvironmentallyfriendly.SectionBDirections:Inthissection,youwillheartwolongconversations.Attheendofeachconversation,youwillhearfourquestions.Boththeconversationandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions8to11arebasedontheconversationyouhavejustheard.8.A)Itseemsadepressingtopic.B)Itsoundsquitealarming.C)Ithaslittleimpactonourdailylife.D)Itisgettingmoreseriousthesedays.9.A)Themandoesn\'tunderstandSpanish.B)Thewomandoesn\'treallylikedancing.C)Theydon\'twantsomethingtoonoisy.D)Theycan\'tmakeittothetheatreintime.10.A)ItwouldbemorefunwithoutMr.Whiteheadhosting.B)Ithastoomanyactstoholdtheaudience\'sattention.C)Itisthemostamusingshowhehaseverwatched.D)Itisashowinappropriateforanightofcharity.11.A)Watchacomedy.B)Goandseethedance.C)Booktheticketsonline.D)Seeafilmwiththeman.Questions12to15arebasedontheconversationyouhavejustheard.12.A)Mostofherschoolmatesareyoungerthansheis.B)Shesimplyhasnoideawhatschooltotransferto.C)Therearetoomanyactivitiesforhertocopewith.D)Sheworriesshewon\'tfitinasatransferstudent.13.A)Seekadvicefromseniorstudents.B)Pickupsomemeaningfulhobbies.C)Participateinafter-schoolactivities.D)Lookintowhattheschooloffers.14.A)Giveherhelpwheneversheneedsit.B)Acceptherasatransferstudent.C)Findheraccommodationoncampus.D)Introducehertoherroommates.15.A)ShehasinterestssimilartoMr.Lee\'s.B)ShehasbecomefriendswithCatherine.C)ShehaschosenthemajorCatherinehas.D)Shehasjusttransferredtothecollege.SectionCDirections:Inthissection,youwillhearthreepassages.Attheendofeachpassage,youwill欢迎下载2-hearthreeorfourquestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions16to18arebasedonthepassageyouhavejustheard.16.A)Toinvestigatehowbeingoverweightimpactsonhealth.B)Tofindoutwhichphysicaldriveisthemostpowerful.C)Todiscoverwhatmostmiceliketoeat.D)Todeterminewhatfeelingsmicehave.17.A)Whentheyarehungry.B)Whentheyarethirsty.C)Whentheysmellfood.D)Whentheywantcompany.18.A)Theysearchforfoodingroups.B)Theyareoverweightwhenfoodisplenty.C)Theyprefertobewithothermice.D)Theyenjoythecompanyofotheranimals.Questions19to21arebasedonthepassageyouhavejustheard.19.A)ItsconstructionstartedbeforeWorldWarI.B)Itsconstructioncostmorethan$40billion.C)Itisefficientlyusedfortransport.D)Itisoneofthebestintheworld.20.A)Toimprovetransportationinthecountryside.B)Tomovetroopsquicklyfromplacetoplace.C)Toenablepeopletotravelatahigherspeed.D)Tospeedupthetransportationofgoods.21.A)Inthe1970s.B)Inthe1960s.C)Inthe1950s.D)Inthe1940s.Questions22to25arebasedonthepassageyouhavejustheard.22.A)Chattingwhiledriving.B)Messagingwhiledriving.C)Drivingunderage.D)Speedingonhighways.23.A)Agadgettoholdaphoneonthesteeringwheel.B)Agadgettochargethephoneinacar.C)Adevicetocontrolthespeedofavehicle.D)Adevicetoensurepeopledrivewithbothhands.24.A)Thecarkeepsflashingitsheadlights.B)Thecarslowsdowngraduallytoahalt.C)Theyarealertedwithalightandasound.D)Theygetawarningontheirsmartphone.25.A)Installingacamera.欢迎下载3-B)Usingaconnectedapp.C)Checkingtheiremails.D)KeepingadailyrecordPartⅢReadingComprehension(40minutes)SectionADirections:Inthissection,thereisapassagewith10blanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.AnofficetoweronMillerStreetinManchesteriscompletelycoveredinsolarpanels.Theyareusedtocreatesomeoftheenergyusedbytheinsurancecompanyinside.Whenthetowerwasfirst__26__in1962,itwascoveredwiththinsquarestones.Thesesmallsquarestonesbecameaproblemforthebuildingandcontinuedtofalloffthefacefor40yearsuntilamajorrenovationwas__27__.Duringthisrenovationthebuilding\'sowners,CIS,__28__thesolarpanelcompany,Solarcentury.Theyagreedtocovertheentirebuildinginsolarpanels.In2004,thecompletedCIStowerbecameEurope\'slargest__29__ofverticalsolarpanels.Averticalsolarprojectonsuchalarge__30__hasneverbeenrepeatedsince.Coveringaskyscraperwithsolarpanelshadneverbeendonebefore,andtheCIStowerwaschosenasoneofthe"10bestgreenenergyprojects".Foralongtimeafterthisrenovationproject,itwasthetallestbuildingintheUnitedKingdom,butitwas__31__overtakenbytheMillbankTower.Greenbuildingslikethisaren\'t__32__cost-efficientfortheinvestor,butitdoesproducemuchlesspollutionthanthatcausedbyenergy__33__throughfossilfuels.Assolarpanelsget__34__,theworldislikelytoseemoreskyscraperscoveredinsolarpanels,collectingenergymuchliketreesdo.Imagineaworldwherebuildingthetallestskyscraperwasn\'taraceof__35__,butratheronetocollectthemostsolarenergy.A)cheaperB)cleanerC)collectionD)competedE)constructedF)consultedG)dimensionH)discoveredI)eventuallyJ)heightK)necessarilyL)productionM)rangeN)scaleO)undertakenSectionBDirections:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.AnswerthequestionsbymarkingthecorrespondingletteronAnswerSheet2.SomeCollegeStudentsAreAngryThatTheyHavetoPaytoDoTheirHomeworkA)Digitallearningsystemsnowchargestudentsforaccesscodesneededtocompletecoursework,takequizzes,andturninhomework.Asuniversitiesgodigital,studentsarecomplainingofanewhittotheirfinancesthat\'sreplacing—andsometimesjoining—expensivetextbooks:欢迎下载4-priceyonlineaccesscodesthatarerequiredtocompletecourseworkandsubmitassignments.B)Thecodes—whichtypicallyrangeinpricefrom$80to$155percourse—givestudentsonlineaccesstosystemsdevelopedbyeducationcompanieslikeMcGrawHillandPearson.Thesecompanies,whichlongreapedbigprofitsastextbookpublishers,haveboastedthattheirnewonlineofferings,whenpushedtostudentsthroughuniversitiestheypartnerwith,representthefutureoftheindustry.C)Butcriticssaythedigitalaccesscodesrepresentthesameprofit-seekingethos(观念)ofthetextbookbusiness,andareevenharderforstudentstooptoutof.Whiletheycouldoncebuysecond-handtextbooks,orsharecopieswithfriends,thedigitalsystemsareessentiallyimpossibletoavoid.D)"Whenwetalkabouttheaccesscodeweseeitasthenewfaceofthetextbookmonopoly(垄断),anewwaytolockstudentsaroundthissystem,"saidEthanSenack,thehighereducationadvocatefortheU.S.PublicInterestResearchGroup,toBuzzFeedNews."Ratherthan$250(foraprinttextbook)you\'repaying$120,"saidSenack."Butbecauseit\'salldigitaliteliminatestheusedbookmarketandeliminatesanysharingandbecausehomeworkandtestsarethroughanaccesscode,iteliminatesanyabilitytooptout."E)SarinaHarpet,a19-year-oldstudentatVirginiaTech,wasfacedwithatoughdilemmawhenshefirststartedcollegein2015—payrentorpaytoturninherchemistryhomework.ShetoldBuzzFeedNewsthatherfreshmanchemistryclassrequiredhertouseConnect,asystemprovidedbyMcGrawHillwherestudentscansubmithomework,takeexamsandtracktheirgrades.Butthecodetoaccesstheprogramcost$120—abigsumforHarper,whohadalreadyputdown$450fortextbooks,andhadrentdayapproaching.F)Shedecidedtowaitforhernextwork-studypaycheck,whichwastypically$150-$200,topayforthecode.Sheknewthatherchemistrygrademaytakeadiveasaresult."It\'sabalancingact,"shesaid."CanIreallyaffordtheseaccesscodesnow?"Shedidn\'thandinherfirsttwoassignmentsforchemistry,whichstartedheroutintheclasswithafailinggrade.G)Theaccesscodesmaybeanotherfinancialheadacheforstudents,butfortextbookbusinesses,they\'rethefuture.McGrawHill,whichcontrols21%ofthehighereducationmarket,reportedinMarchthatitsdigitalcontentsalesexceededprintsalesforthefirsttimein2015.Thecompanysaidthat45%ofits$140millionrevenuein2015"wasderivedfromdigitalproducts."H)APearsonspokespersontoldBuzzFeedNewsthat"digitalmaterialsarelessexpensiveandagoodinvestment"thatoffernewfeatures,likeaudiotexts,personalizedknowledgechecksandexpertvideos.Itsdigitalcoursematerialssavestudentsupto60%comparedtotraditionalprintedtextbooks,thecompanyadded.McGrawHilldidn\'trespondtoarequestforcomment,butitsCEODavidLevintoldtheFinancialTimesinAugustthat"inhighereducation,theeraoftheprintedtextbookisnowover."欢迎下载5-I)Thetextbookindustryinsiststheonlinesystemsrepresentabetterdealforstudents."Thesedigitalproductsaren\'tjustmechanismsforstudentstosubmithomework,theyofferallkindsoffeatures,"DavidAnderson,theexecutivedirectorofhighereducationwiththeAssociationofAmericanPublishers,toldBuzzFeedNews."Ithelpsstudentsunderstandinawaythatyoucan\'tdowithprinthomeworkassignments."J)DavidHunt,anassociateprofessorinsociologyatAugustaUniversity,whichhasrolledoutdigitaltextbooksacrossitsmathandpsychologydepartments,toldBuzzFeedNewsthatheunderstandstheutilityofusingsystemsthatrequireaccesscodes.Buthedoesn\'trequirehisstudentstobuyaccesstoalearningprogramthatcontrolstheclassassignments."Itrytomakethingsasinexpensiveaspossible,"saidHunt,whousesfreedigitaltextbooksforhisclassesbutdesignshisowncurriculum."TheonlinesystemsmaymakemylifealoteasierbutIfeellikeI\'mgivingupcontrol.Thediscussionsarethethingswheremyexpertisecanbenefitthestudentsmost."K)A20-year-oldjunioratGeorgiaSouthernUniversitytoldBuzzFeedNewsthatshenormallyspends$500-$600onaccesscodesforclass.Inonecase,theprofessordidn\'trequirestudentstobuyatextbook,justanaccesscodetoturninhomework.Thisyearshesaidshespent$900onaccesscodestobooksandprograms."That\'stwomonthsofrent,"shesaid."Youcan\'tsellanyofitback.Withatraditionaltextbookyoucansellitfor$30-$50andthathelpstopayforyournewsemester\'sbooks.Withanaccesscode,you\'reoutofthatmoney."L)BenjaminWolverton,a19-year-oldstudentattheUniversityofSouthCarolina,toldBuzzFeedNewsthat"it\'sridiculousthatafterpayingtensofthousandsintuitionwehavetopayforalltheseaccesscodestodoourhomework."Manyoftheaccesscodeshe\'spurchasedhavebeenrequiredsimplytocompletehomeworkorquizzes."Oftenit\'sonly10%ofyourgradeinclass."hesaid."You\'repayingsomuchmoneyforsomethingthathardlyaffectsyourgrade—butifyoudidn\'thaveit,itwouldaffectyourgradesenough.ItwouldbebadtostartoutataBorC."Wolvertonsaidhespent$500onaccesscodesfordigitalbooksandprogramsthissemester.M)Harper,apoultry(家禽)sciencemajor,istakingchemistryagainthisyearandhadtobuyanewaccesscodetohandinherhomework.Sherentedhereconomicsandstatisticstextbooksforabout$20each.Butheraccesscodesforhomework,whichcan\'tberentedorboughtsecond-hand,werehermostexpensivepurchases:$120and$85.N)Shestillremembersthestingofherfirstexperienceskippinganassignmentduetothehighprices."Wedon\'treallyhaveamissedassignmentpolicy,"shesaid."Ifyoumissit,youjustmissit.Ijustgotzerosonacoupleoffirstassignments.Imanagedtopulleverythingbackup.Butasascaredfreshmanlookingattheirgrades,it\'snotfun."欢迎下载6-36.Astudent\'syearlyexpensesonaccesscodesmayamounttotheirrentfortwomonths.37.Theonlineaccesscodesmaybeseenasawaytotiethestudentstothedigitalsystem.38.Ifastudenttakesacourseagain,theymayhavetobuyanewaccesscodetosubmittheirassignments.39.McGrawHillaccountsforoverone-fifthofthemarketshareofcollegetextbooks.40.Manytraditionaltextbookpublishersarenowofferingonlinedigitalproducts,whichtheybelievewillbethefutureofthepublishingbusiness.41.Onestudentcomplainedthattheynowhadtopayforaccesscodesinadditiontothehightuition.42.Digitalmaterialscancoststudentslessthanhalfthepriceoftraditionalprintedbooksaccordingtoapublisher.43.Onestudentdecidednottobuyheraccesscodeuntilshereceivedthepayforherpart-timejob.44.Onlinesystemsmaydepriveteachersofopportunitiestomakethebestuseoftheirexpertisefortheirstudents.45.Digitalaccesscodesarecriticizedbecausetheyareprofit-drivenjustlikethetextbookbusiness.SectionCDirections:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.PassageOneQuestions46and50arebasedonthefollowingpassage.PassageOneQuestions46to50arebasedonthefollowingpassage.Losingyourabilitytothinkandrememberisprettyscary.Weknowtheriskofdementia(痴呆症)increaseswithage.Butifyouhavememoryslips,youprobablyneedn\'tworry.Thereareprettycleardifferencesbetweensignsofdementiaandage-relatedmemoryloss.Afterage50,it\'squitecommontohavetroublerememberingthenamesofpeople,placesandthingsquickly,saysDr.KirkDaffnerofBrighamandWomen\'sHospitalinBoston.Thebrainagesjustliketherestofthebody.Certainpartsshrink,especiallyareasinthebrainthatareimportanttolearning,memoryandplanning.Changesinbraincellscanaffectcommunicationbetweendifferentregionsofthebrain.Andbloodflowcanbereducedasbloodvesselsnarrow.Forgettingthenameofanactorinafavoritemovie,forexample,isnothingtoworryabout.Butifyouforgettheplotofthemovieordon\'trememberevenseeingit,that\'sfarmoreconcerning,Daffnersays.Whenyouforgetentireexperiences,hesays,that\'s"aredflagthatsomethingmoreserious欢迎下载7-maybeinvolved."Forgettinghowtooperateafamiliarobjectlikeamicrowaveoven,orforgettinghowtodrivetothehouseofafriendyou\'vevisitedmanytimesbeforecanalsobesignsofsomethinggoingwrong.Buteventhen,Daffnersays,peopleshouldn\'tpanic.Therearemanythingsthatcancauseconfusionandmemoryloss,includinghealthproblemsliketemporarystoppageofbreathingduringsleep,highbloodpressure,ordepression,aswellasmedications(药物)likeantidepressants.Youdon\'thavetofigurethisoutonyourown.Daffnersuggestsgoingtoyourdoctortocheckonmedications,healthproblemsandotherissuesthatcouldbeaffectingmemory.Andthebestdefenseagainstmemorylossistotrytopreventitbybuildingupyourbrain\'scognitive(认知的)reserve,Daffnersays."Readbooks,gotomovies,takeonnewhobbiesoractivitiesthatforceonetothinkinnovelways,"hesays.Inotherwords,keepyourbrainbusyandworking.Andalsogetphysicallyactive,becauseexerciseisaknownbrainbooster.46.Whydoestheauthorsaythatoneneedn\'tbeconcernedaboutmemoryslips?A.Notallofthemaresymptomsofdementia.B.Theyoccuronlyamongcertaingroupsofpeople.C.Notallofthemarerelatedtoone\'sage.D.Theyarequitecommonamongfifty-year-olds.47.Whathappensaswebecomeagedaccordingtothepassage?A.Ourinteractionskillsdeteriorate.B.Somepartsofourbrainstopfunctioning.C.Communicationwithinourbrainweakens.D.Ourwholebrainstartsshrinking.48.Whichmemory-relatedsymptomshouldpeopletakeseriously?A.Totallyforgettinghowtodoone\'sdailyroutines.B.Inabilitytorecalldetailsofone\'slifeexperiences.C.Failuretorememberthenamesofmoviesoractors.D.Occasionallyconfusingtheaddressesofone\'sfriends.49.Whatshouldpeopledowhensignsofseriousmemorylossshowup?A.Checkthebrain\'scognitivereserve.B.Stopmedicationsaffectingmemory.C.Turntoaprofessionalforassistance.D.Exercisetoimprovetheirwell-being.50.WhatisDr.Daffner\'sadviceforcombatingmemoryloss?A.Havingregularphysicalandmentalcheckups.B.Takingmedicinethathelpsboostone\'sbrain.C.Engaginginknownmemoryrepairactivities.D.Stayingactivebothphysicallyandmentally.PassageTwo欢迎下载8-PassageTwoQuestions51to55arebasedonthefollowingpassage.AletterwrittenbyCharlesDarwinin1875hasbeenreturnedtotheSmithsonianInstitutionArchives(档案馆)bytheFBIafterbeingstolentwice."Werealizedinthemid-1970sthatitwasmissing,"saysEffieKapsalis,headoftheSmithsonianInsitutionArchives."Itwasnotedasmissingandlikelytakenbyanintern(实习生),fromwhattheFBIistellingus.Wordgotoutthatitwasmissingwhensomeoneaskedtoseetheletterforresearchpurposes,"andtheinternputtheletterback."Theinternlikelytooktheletteragainoncenobodywaswatchingit."Decadespassed.Finally,theFBIreceivedatipthatthestolendocumentwaslocatedveryclosetoWashington,D.C.Theirartcrimeteamrecoveredtheletterbutwereunabletopresschargesbecausethetimeoflimitationshadended.TheFBIworkedcloselywiththeArchivestodeterminethattheletterwasbothauthenticanddefinitelySmithsonian\'sproperty.TheletterwaswrittenbyDarwintothankanAmericangeologist,Dr.FerdinandVandeveerHayden,forsendinghimcopiesofhisresearchintothegeologyoftheregionthatwouldbecomeYellowstoneNationalPark.Theletterisinfairlygoodcondition,inspiteofbeingoutofthecareoftrainedmuseumstaffforsolong."Itwasluckilyingoodshape,"saysKapsalis,"andwejusthavetodosomeminorthingsinordertobeabletounfoldit.Ithassomeglueonitthathascoloreditslightly,butnothingthatwillpreventusfromusingit.Afteritisrepaired,wewilltakedigitalphotosofitandthatwillbeavailableonline.Oneofourgoalsistogetitemsofhighresearchvalueorinteresttothepubliconline."Itwouldnowbedifficultforanintern,visitororathieftostealadocumentlikethis."Archivingpracticeshavechangedgreatlysincethe1970s,"saysKapsalis,"andwekeepourhighvaluedocumentsinasafethatIdon\'tevenhaveaccessto."51.WhathappenedtoDarwin\'sletterinthe1970s?A.ItwasrecoveredbytheFBI.B.Itwasstolenmorethanonce.C.Itwasputinthearchivesforresearchpurposes.D.ItwaspurchasedbytheSmithsonianArchives.52.WhatdidtheFBIdoaftertherecoveryoftheletter?A.Theyproveditsauthenticity.B.Theykeptitinaspecialsafe.C.Theyarrestedthesuspectimmediately.D.Theypressedcriminalchargesinvain.53.WhatisDarwin\'sletterabout?A.TheevolutionofYellowstoneNationalPark.B.HiscooperationwithanAmericangeologist.欢迎下载9-C.Somegeologicalevidencesupportinghistheory.D.Hisacknowledgementofhelpfromaprofessional.54.WhatwilltheSmithsonianInstitutionArchivesdowiththeletteraccordingtoKapsalis?A.Reserveitforresearchpurposesonly.B.Turnitintoanobjectofhighinterest.C.Keepitapermanentsecret.D.Makeitavailableonline.55.WhathasthepasthalfcenturywitnessedaccordingtoKapsalis?A.Growinginterestinrareartobjects.B.Radicalchangesinarchivingpractices.C.Recoveryofvariousmissingdocuments.D.Increasesinthevalueofmuseumexhibits.PartIVTranslation(30minutes)Directions:Forthispart,youareallowed30minutestotranslateapassagefromChineseintoEnglish.YoushouldwriteyouransweronAnswerSheet2.过去，乘飞机出行对大多数中国人来说是难以想象的。如今，随着经济的发展和生活水平的提高，越来越多的中国人包括许多农民和外出务工人员都能乘飞机出行。他们可以乘飞机到达所有大城市，还有很多城市也在筹建机场。航空服务不断改进，而且经常会有廉价机票。近年来，节假日期间选择乘飞机外出旅游的人数在不断增加。欢迎下载10',)