2018年12月四級真題第一套

精選優(yōu)質(zhì)文檔-----傾情為你奉上精選優(yōu)質(zhì)文檔-----傾情為你奉上專心---專注---專業(yè)專心---專注---專業(yè)精選優(yōu)質(zhì)文檔-----傾情為你奉上專心---專注---專業(yè)2018年12月大學(xué)英語四級考試真題（第1套）PartIWriting(30minutes)Directions:Forthispart,youareallowed30minutestowriteashortessayonthechallengesoflivinginabigcity.Youshouldwriteatleast120wordsbutnomorethan180words._________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________PartIIListeningComprehension(25minutes)SectionADirections:Inthissection,youwillhearthreenewsreports.Attheendofeachnewsreport,youwillheartwoorthreequestions.Boththenewsreportandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions1and2arebasedonthenewsreportyouhavejustheard.1.A)Landaspacevehicleonthemoonin2019.B)Designanewgenerationofmobilephones.C)Setupamobilephonenetworkonthemoon.D)Gatherdatafromthemoonwithatinydevice.2.A)Itisstable. B)Itisdurable.C)Itisinexpensive. D)Itissophisticated.Questions3and4arebasedonthenewsreportyouhavejustheard.3.A)Itlastedmorethansixhours.B)Noinjurieswereyetreported.C)Nobodywasinthebuildingwhenitbrokeout.D)Ithadburnedfor45minutesbythetimefirefightersarrived.4.A)Recruitandtrainmorefirefighters.B)Pulldownthedesertedshoppingmall.C)Turntheshoppingmallintoanamusementpark.D)Findmoneytorenovatethelocalneighborhood.Questions5to7arebasedonthenewsreportyouhavejustheard.5.A)Shrinkingpotatofarming. B)Heavyrelianceonimport.C)Widespreadplantdisease. D)Insufficientpotatosupply.6.A)Itintendstokeepitstraditionaldiet.B)Itwantstoexpanditsownfarming.C)Itisafraidofthespreadofdisease.D)Itisworriedaboutunfaircompetition.7.A)Globalwarming. B)Ever-risingprices.C)Governmentregulation. D)Diminishinginvestment.SectionBDirections：Inthissection,youwillheartwolongconversations.Attheendofeachconversation,youwillhearfourquestions.Boththeconversationandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C),andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions8to11arebasedontheconversationyouhavejustheard.8.A)Informative. B)Inspiring.C)Dull. D)Shallow.9.A)Shetypesonakeyboard. B)Shedoesrecording.C)Shetakesphotos. D)Shetakesnotes.10.A)Itkeepshermindactive. B)Itmakesherstayawake.C)Itenableshertothinkhard. D)Ithelpsherkilltime.11.A)Itenableshertoimproveherpronunciation.B)Ithelpsherbetterrememberwhatshelearns.C)Itturnsouttobeanenjoyablewayoflearning.D)Itprovestobefarmoreeffectivethanwriting.Questions12to15arebasedontheconversationyouhavejustheard.12.A)Tospendherhoneymoon.B)TotryauthenticIndianfood.C)TotakephotosoftheTajMahal.D)Totracetheoriginofalovestory.13.A)Inmemoryofaprincess.B)Inhonorofagreatemperor.C)Tomarkthedeathofanemperorofthe1600s.D)Tocelebratethebirthofaprincess’s14thchild.14.A)Itlooksolderthanexpected.B)Itisbuiltofwoodandbricks.C)Itstoreslotsofpricelessantiques.D)Ithaswallsdecoratedwithjewels.15.A)Theirstreetsarenarrow.B)Theyaremostlycrowded.C)Eachonehasauniquecharacter.D)Lifecanbetediousinsomeplaces.SectionCDirections:Inthissection,youwillhearthreepassages.Attheendofeachpassage,youwillhearthreeorfourquestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C),D).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions16to18arebasedonthepassageyouhavejustheard.16.A)Theyhelpspreadthelatesttechnology.B)Theygreatlyenrichpeople’sleisurelife.C)Theyprovideresidentswiththeresourcesneeded.D)Theyallowfreeaccesstodigitalbooksandvideos.17.A)Byhelpingthemfindjobs.B)Byinspiringtheircreativity.C)Bykeepingthemoffthestreets.D)Byprovidingaplaceofrelaxation.18.A)Theirinteractionwithteenagersprovedfruitful.B)Theyusedlibrarieslessoftenthanteenagers.C)Theytendedtovisitlibrariesregularly.D)Theirnumberincreasedmodestly.Questions19to21arebasedonthepassageyouhavejustheard.19.A)Itisthecleverestcatintheworld.B)ItisthelargestcatinAfrica.C)Itisanunusualcrossbreed.D)Itisalarge-sizedwildcat.20.A)Theyareasloyalasdogs.B)Theyhaveunusuallylongtails.C)Theyarefondofsleepingincabinets.D)Theyknowhowtopleasetheirowners.21.A)Theyshaketheirfrontpaws.B)Theyteachthemtodive.C)Theyshowerwiththem.D)Theyshoutatthem.Questions22to25arebasedonthepassageyouhavejustheard.22.A)Anxiousanddepressed.B)Contentedandrelieved.C)Excitedbutsomewhatsad.D)Proudbutabitnervous.23.A)Itisbecomingparents’biggestconcern.B)Itisgainingincreasingpublicattention.C)Itisdependsontheirparentsforsuccess.D)Itstartsthemomenttheyareborn.24.A)Setagoodexampleforthemtofollow.B)Readbooksandmagazinestothem.C)Helpthemtolearnbythemselves.D)Choosetherightschoolforthem.25.A)Theirintelligence.B)Theirhomelife.C)Theefforttheyputinlearning.D)Thequalityoftheirschool.PartⅢReadingComprehension(40minutes)SectionADirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.Questions26to35arebasedonthefollowingpassage.Millionsdieearlyfromairpollutioneachyear.Airpollutioncoststheglobaleconomymorethan$5trillionannuallyinwelfarecosts,withthemostserious26occurringinthedevelopingworld.Thefiguresincludeanumberofcosts27withairpollution.Lostincomealoneamountsto$225billionayear.Thereportincludesbothindoorandoutdoorairpollution.Indoorpollution,whichincludes28likehomeheatingandcooking,hasremained29overthepastseveraldecadesdespiteadvancesinthearea.Levelsofoutdoorpollutionhavegrownrapidlyalongwithrapidgrowthinindustryandtransportation.DirectorofInstituteforHealthMetricsandEvaluationChrisMurray30itasan“urgentcalltoaction.”“Oneoftheriskfactorsforprematuredeathsistheairwebreathe,overwhichindividualshavelittle31,”hesaid.Theeffectsofairpollutionareworstinthedevelopingworld,whereinsomeplaceslost-laborincome32nearly1%ofGDP.Around9in10peopleinlow-andmiddle-incomecountriesliveinplaceswherethey33experiencedangerouslevelsofoutdoorairpollution.Buttheproblemisnotlimited34tothedevelopingworld.ThousandsdieprematurelyintheU.S.asaresultofrelatedillnesses.InmanyEuropeancountries,wherediesel(柴油)35havebecomemorecommoninrecentyears,thatnumberreachestensofthousands.A)abilityK)regularlyB)associatedL)relatesC)consciouslyM)sourcesD)constantN)undermineE)controlO)vehiclesF)damageG)describedH)equalsI)exclusivelyJ)innovatedSectionBDirections:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.AnswerthequestionsbymarkingthecorrespondingletteronAnswerSheet2.Food-as-MedicineMovementIsWitnessingProgress[A]Severaltimesamonth,youcanfindadoctorintheaislesofRalph’smarketinHuntingtonBeach,California,wearingawhitecoatandhelpingpeoplelearnaboutfood.Ononerecentday,thisdoctorwasDanielNadeau,wanderingthecerealaislewithAllisonScott,givinghersomeideaonhowtofeedkidswhopersistentlyavoidanythingthatishealthy.“Haveyouthoughtabouttryingfreshjuicesinthemorning?”heasksher.“Thefrozenorangesandapplesarealittlecheaper,andfruitsarereallygoodforthebrain.Juicesarequickandeasytoprepare,youcantakethefrozenfruitoutthenightbeforeandhaveitreadythenextmorning.”[B]ScottisdelightedtogetfoodadvicefromaphysicianwhoisprogramdirectorofthenearbyMaryandDickAllenDiabetesCenter,partoftheSt.JosephHoagHealthalliance.Thecenter’s‘ShopwithYourDoc’programsendsdoctorstothegrocerystoretomeetwithanypatientswhosignupfortheservice,plusanyothershopperswhohappentobearoundwithquestions.[C]Nadeaunoticesthepre-mademacaroni(通心粉)-and-cheeseboxesinScott’sshoppingcartandsuggestssheswitchtowholegrainmacaroniandrealcheese.“SoI’dhavetomakeit?”sheasks,herenthusiasmfadingatthethoughtofhowlongthatmighttake,justtohaveherkidsrejectit.“I’mnotsurethey’deatit.Theyjustwon’teatit.”[D]Nadeausayssugarandprocessedfoodsarebigcontributorstotherisingdiabetesratesamongchildren.“InAmerica,over50percentofourfoodisprocessedfood,”Nadeautellsher.“Andonly5percentofourfoodisplant-basedfood.Ithinkweshouldtrytoreversethat.”Scottagreestotrymorefruitjuicesforthekidsandtomakerealmacaroniandcheese.Scoreonepointforthedoctor,zerofordiabetes.[E]NadeauispartofasmallrevolutiondevelopingacrossCalifornia.Thefood-as-medicinemovementhasbeenaroundfordecades,butit’smakingprogressasphysiciansandmedicalinstitutionsmakefoodaformalpartoftreatment,ratherthanrelyingsolelyonmedications(藥物).Byprescribingnutritionalchangesorlaunchingprogramssuchas‘ShopwithyourDoc’,theyaretryingtoprevent,limitorevenreversediseasebychangingwhatpatientseat.“There’snoquestionpeoplecantakethingsalongwaytowardreversingdiabetes,reversinghighbloodpressure,evenpreventingcancerbyfoodchoices,”Nadeausays.[F]Inthebigpicture,saysDr.RichardAfable,CEOandpresidentofST.JosephHoagHealth,medicalinstitutionsacrossthestatearestartingtomakeaphilosophicalswitchtobecomingahealthorganization,notjustahealthcareorganization.ThatfeelingechoesthebeliefsoftheTherapeuticFoodPantryprogramatZuckerbergSanFranciscoGeneralHospital,whichcompleteditspilotphaseandisabouttoexpandonanongoingbasistofiveclinicsitesthroughoutthecity.Theprogramwillofferpatientsseveralbagsoffoodprescribedfortheircondition,alongwithintensivetraininginhowtocookit.“Wereallywanttolinkfoodandmedicine,andnotjustgiveawayfood,”saysDr.RitaNguyen,thehospital’smedicaldirectorofHealthyFoodInitiatives.“Wewantpeopletounderstandwhatthey’reeating,howtoprepareit,therolefoodplaysintheirlives.”[G]InSouthernCalifornia,LomaLindaUniversitySchoolofMedicineisofferingspecializedtrainingforitsresidentphysiciansinLifestyleMedicine—thatisaformalspecialtyinusingfoodtotreatdisease.Researchfindingsincreasinglyshowthepoweroffoodtotreatorreversediseases,butthatdoesnotmeanthatdietaloneisalwaysthesolution,orthateveryillnesscanbenefitsubstantiallyfromdietarychanges.Nonetheless,physicianssaythattheylookatthecollectivedataandaclearpictureemerges:thatthesalt,sugar,fatandprocessedfoodsintheAmericandietcontributetothenation’shighratesofobesity,diabetesandheartdisease.AccordingtotheWorldHealthOrganization,80percentofdeathsfromheartdiseaseandstrokearecausedbyhighbloodpressure,tobaccouse,elevatedcholesterolandlowconsumptionoffruitsandvegetables.[H]“It’sadifferentparadigm(范式)ofhowtotreatdisease,”saysDr.BrendaRea,whohelpsrunthefamilyandpreventivemedicineresidencyprogramatLomaLindaUniversitySchoolofMedicine.Thelifestylemedicinespecialtyisdesignedtotraindoctorsinhowtopreventandtreatdisease,inpart,bychangingpatients’nutritionalhabits.ThemedicalcenterandschoolatLomaLindaalsohasafoodcupboardandkitchenforpatients.Thisway,patientsnotonlylearnaboutwhichfoodstobuy,butalsohowtopreparethemathome.[I]Manypeopledon’tknowhowtocook,Reasays,andtheyonlyknowhowtoheatthingsup.Thatmeansdependingonpackagedfoodwithhighsaltandsugarcontent.Soteachingpeopleaboutwhichfoodsarehealthyandhowtopreparethem,shesays,canactuallytransformapatient’slife.Andbeyondthat,itmighttransformthehealthandlivesofthatpatient’sfamily.“Whatpeopleeatcanbemedicineorpoison,”Reasays.“Asaphysician,nutritionisoneofthemostpowerfulthingsyoucanchangetoreversetheeffectsoflong-termdisease.”[J]Studieshaveexploredevidencethatdietarychangescanslowinflammation(炎癥),forexample,ormakethebodyinhospitabletocancercells.Ingeneral,manylifestylemedicinephysiciansrecommendaplant-baseddiet—particularlyforpeoplewithdiabetesorotherinflammatoryconditions.[K]“Aswhathappenedwithtobacco,thiswillrequireaculturalshift,butthatcanhappen,”saysNguyen.“Inthesamewayphysiciansusedtosmoke,andthenstoppedsmokingandwereabletotalktopatientsaboutit,Ithinkphysicianscanhaveabiggervoiceinit.”36.MorethanhalfofthefoodAmericanseatisfactory-produced.37.Thereisaspecialprogramthatassignsdoctorstogiveadvicetoshoppersinfoodstores.38.Thereisgrowingevidencefromresearchthatfoodhelpspatientsrecoverfromvariousillnesses.39.Ahealthybreakfastcanbepreparedquicklyandeasily.40.Trainingapatienttopreparehealthyfoodcanchangetheirlife.41.Onefood-as-medicineprogramnotonlyprescribesfoodfortreatmentbutteachespatientshowtocookit.42.Scottisnotkeenoncookingfoodherself,thinkingitwouldsimplybeawasteoftime.43.Diabetespatientsareadvisedtoeatmoreplant-basedfood.44.Usingfoodasmedicineisnonovelidea,butthemovementismakingheadwaythesedays.45.Americans’highratesofvariousillnessesresultfromthewaytheyeat.SectionCDirections:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.PassageOneQuestions46and50arebasedonthefollowingpassage.Californiahasbeenfacingadroughtformanyyearsnow,withcertainareasevenhavingtopumpfreshwaterhundredsofmilestotheirdistributionsystem.Theproblemisgrowingasthepopulationofthestatecontinuestoexpand.Newresearchhasfounddeepwaterreservesunderthestatewhichcouldhelpsolvetheirdroughtcrisis.Previousdrillingofwellscouldonlyreachdepthsof1,000feet,butduetonewpumpingpractices,waterdeeperthanthiscannowbeextracted(抽取).TheteamatStanfordinvestigatedtheaquifers(地下蓄水層)belowthisdepthandfoundthatreservesmaybetriplewhatwaspreviouslythought.Itisprofitabletodrilltodepthsmorethan1,000feetforoilandgasextraction,butonlyrecentlyinCaliforniahasitbecomeprofitabletopumpwaterfromthisdepth.Theaquifersrangefrom1,000to3,000feetbelowtheground,whichmeansthatpumpingwillbeexpensiveandthereareotherconcerns.Thebiggestconcernofpumpingoutwaterfromthisdeepinthegradualsettlingdownofthelandsurface.Asthewaterispumpedout,thevacantspaceleftiscompactedbytheweightoftheearthabove.Eventhoughpumpingfromthesedepthsisexpensive,itisstillcheaperthandesalinating(脫鹽)theoceanwaterinthelargelycoastalstate.Somedesalinationplantsexistwherefeasible,buttheyarecostlytorunandcanneedconstantrepairs.Wellsaremuchmorereliablesourcesoffreshwater,andCaliforniaishopingthatthesedeepwellsmaybetheanswertotheirseverewatershortage.Oneproblemwiththesesourcesisthatthedeepwateralsohasahigherlevelofsaltthanshalloweraquifers.Thismeansthatsomewellsmayevenneedtoundergodesalinationafterextraction,thusincreasingthecost.Researchfromtheexhaustivestudyofgroundwaterfromover950drillinglogshasjustbeenpublished.Newestimatesofthewaterreservesnowgoupto2,700billioncubicmetersoffreshwater.46.HowcouldCalifornia’sdroughtcrisisbesolvedaccordingtosomeresearchers?A)Bybuildingmorereservesofgroundwater.B)Bydrawingwaterfromthedepthsoftheearth.C)Bydevelopingmoreadvanceddrillingdevices.D)Byupgradingitswaterdistributionsystem.47.Whatcanbeinferredaboutextractingwaterfromdeepaquifers?A)Itwasdeemedvitaltosolvingthewaterproblem.B)Itwasnotconsideredworththeexpense.C)Itmaynotprovidequalityfreshwater.D)Itisboundtogainsupportfromthelocalpeople.48.Whatismentionedasaconsequenceofextractingwaterfromdeepunderground?A)Thesinkingoflandsurface.C)Thedamagetoaquifers.B)Theharmtotheecosystem.D)Thechangeoftheclimate.49.Whatdoestheauthorsayaboutdeepwells?A)Theyrunwithoutanyneedforrepairs.B)Theyareentirelyfreefrompollutants.C)Theyaretheultimatesolutiontodroughts.D)Theyprovideasteadysupplyoffreshwater.50.Whatmayhappenwhendeepaquifersareusedaswatersources?A)People’shealthmayimprovewithcleanerwater.B)People’swaterbillsmaybeloweredconsiderably.C)Thecostmaygoupduetodesalination.D)Theymaybeexhaustedsoonerorlater.PassageTwoQuestions51to55arebasedonthefollowingpassage.TheAlphaGoprogram’svictoryisanexampleofhowsmartcomputershavebecome.Butcanartificialintelligence(AI)machinesactethically,meaningcantheybehonestandfair?OneexampleofAIisdriverlesscars.TheyarealreadyonCaliforniaroads,soitisnottoosoontoaskwhetherwecanprogramamachinetoactethically.Asdriverlesscarsimprove,theywillsavelives.Theywillmakefewermistakesthanhumandriversdo.Sometimes,however,theywillfaceachoicebetweenlives.Shouldthecarsbeprogrammedtoavoidhittingachildrunningacrosstheroad,evenifthatwillputtheirpassengersatrisk?Whataboutmakingasuddenturntoavoidadog?Whatiftheonlyriskisdamagetothecaritself,nottothepassengers?Perhapstherewillbelessonstolearnfromdriverlesscars,buttheyarenotsuper-intelligentbeings.Teachingethicstoamachineevenmoreintelligentthanwearewillbethebiggerchallenge.AboutthesametimeasAlphaGo’striumph,Microsoft’s‘chatbot’tookabadturn.Thesoftware,namedTaylor,wasdesignedtoanswermessagesfrompeopleaged18-24.Taylorwassupposedtobeabletolearnfromthemessagesshereceived.Shewasdesignedtoslowlyimproveherabilitytohandleconversations,butsomepeoplewereteachingTaylorracistideas.WhenshestartedsayingnicethingsaboutHitler,Microsoftturnedheroffanddeletedherugli