2025年下半年全国英语等级考试（PETS）四级练习试题库(丹东)

2025年下半年全国英语等级考试（PETS）四级练习试题库(丹东)SectionIListeningComprehensionPartAForQuestions1-5,youwillhearaconversationbetweenatouristguideandavisitoraboutatriptoDandong.Whileyoulisten,filloutthetablewiththeinformationyouhaveheard.Writeonly1wordornumberforeachblank.1.ThetouristgroupwillvisittheBrokenBridgeatexactly________a.m.2.TheriverthatseparatesDandongfromNorthKoreaiscalledtheYalu________.3.Thelocalspecialtyfoodrecommendedbytheguideiscooked________.4.Thevisitorneedstopayanadditionalfeeof________yuanfortheboattour.5.Theafternoontemperatureisexpectedtoreach________degreesCelsius.PartBForQuestions6-10,youwillheararadiointerviewaboutcross-bordertradedevelopment.DecidewhetherthefollowingstatementsareTrue(T)orFalse(F).6.Thetotaltradevolumeintheregiondecreasedlastyearduetoglobaltensions.7.Thenewcustomsclearancepolicyreducespaperworkforsmallbusinesses.8.Overfiftypercentofthelocalexportersnowuseelectronicdocumentation.9.Thelocalgovernmentplanstoexpandtheportareaby2025.10.Theintervieweebelievesthattourismhasnoimpactonbilateraltrade.PartCForQuestions11-15,youwillhearamonologueabouttheecologicalprotectionoftheYaluRiverEstuaryWetland.Listenandchoosethebestanswer.11.Whatistheprimaryfocusofthespeaker?A.Theeconomicvalueofwetlandtourism.B.Theimportanceofwetlandconservation.C.ThehistoryofDandongcity.D.Themigrationpatternsoffish.12.Accordingtothespeaker,howmanybirdspeciesrestinthewetlandannually?A.Morethan200.B.Lessthan150.C.Exactly300.D.Around100.13.Whatthreatdidthewetlandfaceinthepast?A.Severeindustrialpollution.B.Overfishingbylocalfarmers.C.Excessivetourismdevelopment.D.Urbanexpansionandreclamation.14.Whatmeasurewastakentorestorethewetlandecosystem?A.Introducingforeignbirdspecies.B.Buildingartificialnestingsites.C.Plantingreedsandrestrictingaccess.D.Redirectingtheriverflow.15.Whatdoesthespeakerurgethelocalresidentstodo?A.Donatemoneytothereserve.B.Participateinvolunteermonitoring.C.Stopconsuminglocalseafood.D.Reducehouseholdwaterusage.TranscriptforListeningComprehensionPartAW:Goodmorning,Mr.Smith.WelcometoDandong.Iamyourguidefortoday.M:Goodmorning.Iamveryexcitedtoexplorethecity.Whatisourfirstdestination?W:WewillheadtotheYaluRiverBrokenBridgefirst.Weneedtoarrivethereatexactly9:30a.m.toavoidthelargecrowds.M:Thatsoundsperfect.IhaveheardalotabouttheriverthatdividesChinaandNorthKorea.Whatisitsexactname?W:ItiscalledtheYaluRiver.Itholdsgreathistoricalsignificancefortheregion.M:Iamlookingforwardtoit.Also,Iwanttotrysomelocalfood.Whatdoyourecommend?W:Youmusttrytheyellowclam,whichisafamouslocalspecialty.Itisusuallycookedbyboilingtokeepitsfreshflavor.M:Boiledclams,gotit.Willwehaveachancetogetonthewater?W:Yes,thereisaboattouravailable.Itisnotincludedinyourbasepackage,soyouneedtopayanadditionalfeeof50yuan.M:Thatisveryreasonable.WhatshouldIwear?Theweatherlooksabitunpredictable.W:Youshouldwearlayers.Themorningiscool,buttheafternoontemperatureisexpectedtoreach28degreesCelsius.So,lightclothingunderneathisbest.M:Excellent.Letusgetstarted.PartBM:Welcometoourmorningprogram.Todaywehaveaneconomicexpert,Mr.Chen,totalkabouttherecentdevelopmentsincross-bordertrade.Mr.Chen,howisthesituationthisyear?W:Thankyouforhavingme.Despiteglobaluncertainties,thetotaltradevolumeintheregionactuallyincreasedlastyear,provingtheresilienceofthelocaleconomy.M:Thatisgreatnews.Arethereanypolicychangeshelpingthisgrowth?W:Yes,thenewcustomsclearancepolicyreducespaperworkforsmallbusinesses,makingitmucheasierforthemtoexportgoodsacrosstheriver.M:Havethebusinessesadaptedtothiswell?W:Absolutely.Currently,oversixtypercentofthelocalexportersuseelectronicdocumentation,whichspeedsuptheprocesssignificantly.M:Whataboutfutureplans?W:Thelocalgovernmentplanstoexpandtheportareaby2025toaccommodatelargercargovessels.M:Doyouthinkculturaleventsaffecttrade?W:Definitely.Theincreaseintourismhaspositivelyimpactedbilateraltrade,astouristsoftenpurchasegoodsfromtheneighboringcountry.PartCM:Goodafternoon,everyone.TodayIwanttosharesomeinsightsintotheecologicalprotectionoftheYaluRiverEstuaryWetland.Thisareaisnotjustabeautifullandscape;itisavitalhabitatforwildlife.Theimportanceofwetlandconservationcannotbeoverstated,astheseareasactasnaturalwaterfiltersandfloodcontrollers.Everyyear,morethan200differentbirdspeciesresthereduringtheirlongmigrationroutes.Inthepast,thisdelicateecosystemfacedsignificantthreatsfromurbanexpansionandlandreclamation.Torestorethewetland,thelocalgovernmentinitiatedacomprehensiveproject.Theyplantedthousandsofhectaresofreedsandstrictlyrestrictedhumanaccesstothecoreareas.Thisallowedthenaturalvegetationtorecover,bringingbackthebirdsinlargenumbers.However,conservationisanongoingeffort.Weurgelocalresidentstoparticipateinvolunteermonitoringprograms.Bysimplyreportingbirdsightingsorpollutionincidents,youcanhelpusmaintainthisecologicaltreasureforfuturegenerations.AnswersandExplanationsforListening1.9:302.River3.Clam4.505.286.False7.True8.False9.True10.False11.B12.A13.D14.C15.BSectionIIUseofEnglishKnowledgeReadthefollowingtext.Choosethebestwordforeachblankfromtheoptionsgiven.ThecityofDandong,situatedontheborderofChinaandNorthKorea,hasexperiencedremarkabletransformationsoverthepastfewdecades.Historicallyknownasa16tradingpost,ithasgrownintoamodernurbancenter.TheYaluRiver,whichflowsthroughthecity,servesnotonlyasageographical17butalsoasaculturalbridgeconnectingthetwonations.Inrecentyears,thelocalgovernmenthas18greateffortstopromotesustainabletourism.TheBrokenBridge,arelicfromtheKoreanWar,standsasa19reminderofthepastandattractsthousandsofvisitorsannually.Touristsoftenstandonthebridge,gazingacrosstheriver,20bythehistoricalweightofthestructure.Thelocaleconomyheavilyreliesoncross-bordertradeand21industries.Manysmallandmedium-sizedenterpriseshaveflourishedbyexportinggoodssuchaselectronics,textiles,andagricultural22.Theestablishmentofneweconomiczoneshasfurther23businessactivities,creatingnumerousjob24forthelocalpopulation.Despitetherapideconomicgrowth,thecityfaces25.Environmentalprotectionremainsacritical26.Thewetlandsaroundtheestuaryare27tovariousendangeredbirdspecies,andbalancingindustrialexpansionwithecological28isparamount.Theauthoritieshaveimplementedstrictregulationsto29industrialwastefrompollutingtheriver.Furthermore,campaignstoraisepublic30aboutenvironmentalconservationareregularlyconductedinschoolsandcommunities.Culturally,Dandongisameltingpot.Thelocalcuisine,suchasyellowclamsandKorean-stylebarbecue,31thediverseheritageoftheregion.Theresidentsareknownfortheir32andwelcomingnature,makingtouristsfeelathome.Thecitytrulyoffersaunique33ofhistory,nature,andeconomicvitality.Lookingahead,Dandongis34tocontinueitsupwardtrajectory,35amodelforbordercitydevelopment.16.A.massiveB.bustlingC.tranquilD.remote17.A.boundaryB.obstacleC.resourceD.connection18.A.madeB.tookC.didD.put19.A.subtleB.vagueC.solemnD.joyful20.A.movedB.movingC.beingmovedD.havingmoved21.A.heavyB.serviceC.manufacturingD.agricultural22.A.productsB.outputsC.yieldsD.crops23.A.stimulatedB.restrictedC.preventedD.delayed24.A.positionsB.locationsC.placesD.situations25.A.promisesB.opportunitiesC.challengesD.advantages26.A.concernB.successC.achievementD.profit27.A.refugeB.homeC.shelterD.habitat28.A.protectionB.destructionC.assessmentD.ignorance29.A.preventB.protestC.protectD.prohibit30.A.awarenessB.ignoranceC.knowledgeD.experience31.A.reflectsB.rejectsC.deflectsD.inflects32.A.coldB.hostileC.warmD.indifferent33.A.mixtureB.separationC.rejectionD.division34.A.posedB.poisedC.placedD.paused35.A.servingB.servedC.toserveD.havingservedAnswersandExplanationsforUseofEnglish16.B.bustling（喧闹的，繁忙的）。根据后文grownintoamodernurbancenter可知，它过去也是一个繁忙的贸易站。17.A.boundary（边界）。鸭绿江不仅是地理边界，也是文化桥梁。18.A.made。固定搭配makeeffortstodosth.（努力做某事）。19.C.solemn（庄严的，肃穆的）。断桥是战争遗迹，提醒人们铭记历史，因此是庄严的。20.A.moved。游客被历史厚重感所打动，过去分词作状语表被动和状态。21.C.manufacturing（制造业）。后文提到出口电子产品和纺织品，属于制造业。22.A.products（产品）。农产品通常用agriculturalproducts表示。23.A.stimulated（刺激，促进）。经济区的建立促进了商业活动。24.A.positions（职位）。创造就业机会/职位。25.C.challenges（挑战）。句意转折，尽管经济增长快，仍面临挑战。26.A.concern（关注，关切）。环境保护是关键的关注点。27.D.habitat（栖息地）。湿地是各种濒危鸟类的栖息地。28.A.protection（保护）。平衡工业扩张与生态保护。29.A.prevent（阻止）。prevent...fromdoingsth.（阻止……做某事）。30.A.awareness（意识）。提高公众环保意识。31.A.reflects（反映）。当地美食反映了该地区的多元文化底蕴。32.C.warm（热情的）。当地人以热情好客著称。33.A.mixture（融合）。这座城市提供了历史、自然和经济活力的独特融合。34.B.poised（准备就绪，蓄势待发）。bepoisedtodosth.（准备做某事）。35.A.serving（作为）。现在分词作伴随状语，作为边境城市发展的典范。SectionIIIReadingComprehensionReadthefollowingtexts.AnswerthequestionsbeloweachtextbychoosingA,B,CorD.Text1Theconceptofsmartcitieshasevolvedfromafuturisticvisiontoatangiblerealityinmanypartsoftheworld.Byintegratinginformationandcommunicationtechnologies(ICT),citiesaimtoenhancethequalityoflifefortheircitizens,improveurbanservices,andoptimizeresourceconsumption.Dandong,asabordercitywithuniquegeographicaladvantages,isalsoembracingthistransformation.Oneoftheprimaryfocusesofasmartcityistransportation.Intelligenttrafficmanagementsystemsusereal-timedatafromcamerasandsensorstoregulatetrafficlights,reducingcongestionandcommutetimes.InDandong,theimplementationofsmartbusstops,whichprovidecitizenswithaccuratearrivaltimesviamobileapplications,hassignificantlyimprovedthepublictransitexperience.Furthermore,thelocalgovernmentisexploringtheuseofautonomousvehiclesindesignatedportareastostreamlinelogisticsoperations.Energyefficiencyisanothercrucialaspect.Smartgridsarebeingdeployedtomonitorenergyusageanddistributeelectricitymoreeffectively.Thisnotonlyreducescostsbutalsominimizestheenvironmentalfootprintofthecity.Buildingsarebeingretrofittedwithsmartmetersandautomatedclimatecontrolsystems,ensuringthatenergyisconsumedonlywhennecessary.However,thetransitiontoasmartcityisnotwithoutchallenges.Dataprivacyremainsasignificantconcern.Themassivecollectionofcitizendatathroughsensorsandcamerasraisesquestionsaboutwhocontrolsthisinformationandhowitisused.Toaddressthis,Dandonghasestablishedstrictdatagovernanceframeworks,ensuringthatpersonalinformationisanonymizedandprotectedagainstcyberthreats.Anotherchallengeisthedigitaldivide.Olderpopulationsandlow-incomehouseholdsmaystruggletoadapttonewtechnologies.Therefore,communitycentershavebeensetuptoprovidedigitalliteracytraining,ensuringthatthebenefitsofsmartcityinitiativesareaccessibletoallresidents.36.Whatisthemainideaofthepassage?A.ThehistoryofDandongcity.B.Theimplementationandchallengesofsmartcitytechnologies.C.Theimportanceofpublictransportationinurbanareas.D.Thethreatofcybersecurityinmoderncities.37.Accordingtothepassage,howhasDandongimproveditspublictransitexperience?A.Bybuildingmoreundergroundsubways.B.Byusingautonomousbusesonpublicroads.C.Byimplementingsmartbusstopswithreal-timedata.D.Byreducingthefareforpublictransportation.38.Whatisthefunctionofsmartgridsmentionedinthetext?A.Togeneraterenewableenergyfromsolarpanels.B.Tomonitorenergyusageanddistributeelectricityeffectively.C.Todisconnectpowerduringsevereweatherconditions.D.Tosellexcesselectricitytoneighboringcountries.39.WhyhavecommunitycentersbeensetupinDandong?A.Toprovidemedicalcarefortheelderly.B.Toofferdigitalliteracytrainingtobridgethedigitaldivide.C.Tocollectfeedbackonlocalgovernmentpolicies.D.Tohostculturalexchangeprogramswithtourists.40.Whatcanbeinferredaboutthecollectionofcitizendata?A.Itiscompletelybannedbythelocalgovernment.B.Itisonlyusedfortrafficmanagement.C.Itposesprivacyrisksthatneedcarefulgovernance.D.Itisfreelysoldtoprivatecorporations.Text2Thepaceofmodernlifehasaccelerateddramatically,drivenbytechnologicaladvancementsandtheubiquitousnatureofdigitalcommunication.Whilethishyper-connectivityhasbroughtimmenseconvenience,ithasalsobirthedamodernepidemic:loneliness.Paradoxically,inanerawherewecaninstantlymessageanyoneacrosstheglobe,peoplereportfeelingmoreisolatedthaneverbefore.Psychologistsattributethisphenomenontothesuperficialnatureofdigitalinteractions.Socialmediaplatforms,whileostensiblydesignedtoconnectpeople,oftenfosterenvironmentsofcomparisonandperformanceratherthangenuineemotionalexchange.Thecuratedlivespresentedontheseplatformscanmakeindividualsfeelinadequate,leadingthemtoretreatfurtherintothemselves.Thelackofface-to-faceinteractiondeprivesusofthesubtlenon-verbalcues,suchaseyecontactandbodylanguage,thatareessentialforbuildingdeep,empatheticbonds.Thehealthimplicationsofchroniclonelinessaresevere.Researchindicatesthatprolongedsocialisolationcanbeasharmfultophysicalhealthassmokingfifteencigarettesaday.Itincreasestheriskofcardiovasculardiseases,weakenstheimmunesystem,andsignificantlycontributestomentalhealthdisorderssuchasdepressionandanxiety.Inolderadults,lonelinesshasbeenlinkedtoafasterrateofcognitivedeclineandanincreasedriskofdementia.Addressingthiscrisisrequiresamultifacetedapproach.Onanindividuallevel,itnecessitatesaconsciousefforttocultivateofflinerelationships.Thismeansintentionallysettingasidetimeforface-to-faceinteractions,engagingincommunityactivities,andestablishing"digitaldetox"periodswhereelectronicdevicesareturnedoff.Onasocietallevel,urbanplanningshouldprioritizethecreationofpublicspacesthatencouragesocialgathering.Parks,communitygardens,andpedestrian-friendlyzonescanserveascatalystsfororganicsocialinteractions,helpingtoweavethesocialfabricbacktogether.41.Whatdoestheword"paradoxically"suggestinthecontextofthefirstparagraph?A.Itissurprisingthattechnologyhasmadecommunicationslower.B.Itiscontradictorythathyper-connectivitycorrespondswithincreasedisolation.C.Itisobviousthatpeoplepreferofflineinteractionsoverdigitalones.D.Itisnaturalthatpeoplefeellonelywhentheymovetonewcities.42.Accordingtothepassage,whydosocialmediaplatformscontributetoloneliness?A.Theychargehighfeesforusage.B.Theylackvideocallingfeatures.C.Theypromotecomparisonandsuperficialexchangesratherthandeepconnections.D.Theylimitthenumberoffriendsapersoncanhave.43.Whatisthephysicalhealthriskassociatedwithchronicloneliness?A.Itisasharmfulassmokingfifteencigarettesaday.B.Itprimarilycausesskindiseases.C.Ithasnoprovenlinktophysicalhealth.D.Itonlyaffectsmentalhealth,notphysicalhealth.44.Whatdoestheauthorrecommendasanindividualsolutiontoloneliness?A.Purchasingmoreadvancedsmartphones.B.Joiningmoresocialmediagroups.C.Cultivatingofflinerelationshipsandtakingdigitaldetoxes.D.Movingtoruralareaswithlessinternetaccess.45.Howcanurbanplanninghelpalleviatelonelinessaccordingtothetext?A.Bybuildinglargerhospitalstotreatdepression.B.Bycreatingpublicspaceslikeparksthatencouragesocialgathering.C.Byprovidingfreeinternetaccessinallcitycenters.D.Byconstructingtallerapartmentbuildingstohousemorepeople.Text3Cross-bordere-commercehasrevolutionizedinternationaltrade,allowingsmallandmedium-sizedenterprises(SMEs)toreachglobalmarketswithunprecedentedease.PlatformslikeAlibabaandAmazonhaveloweredthebarrierstoentry,enablingalocalmerchantinDandongtosellspecialtygoodstoconsumersinEuropeorNorthAmericadirectly.Thisdemocratizationoftradehassignificanteconomicimplications.Oneoftheprimaryadvantagesofcross-bordere-commerceisthereductioninintermediarycosts.Traditionally,exportinggoodsinvolvedacomplexwebofdistributors,wholesalers,andretailers,eachtakingaprofitmargin.Bysellingdirectlytotheendconsumer,businessescanoffermorecompetitivepriceswhilesimultaneouslyincreasingtheirownprofitmargins.Thisdirectaccessalsoprovidesvaluableconsumerdata,allowingbusinessestotailortheirproductstospecificmarketdemands.However,venturingintoglobale-commerceisnotwithouthurdles.Logisticsremainsasignificantbottleneck.Shippingasmallparcelfromabordercitytoadistantcontinentisoftenexpensiveandtime-consuming.Whileinternationalshippingcompanieshaveoptimizedbulkfreight,individualparceldeliverystillfacesinefficiencies.Furthermore,customsclearanceprocedurescanbeunpredictable,causingdelaysthatfrustrateconsumers.Returnsandexchangesareparticularlyproblematic,oftencostingthemerchantmorethanthevalueofthereturneditem.Anothermajorchallengeisregulatorycompliance.Differentcountrieshavevastlydifferentstandardsforproductsafety,labeling,andtaxation.AnSMEmustnavigatethesecomplexlegallandscapestoavoidheftyfinesorconfiscatedshipments.Forinstance,electronicproductssoldtotheEuropeanUnionmustmeetCEcertificationstandards,whilefooditemsexportedtotheUnitedStatesrequireFDAapproval.Toovercomethesechallenges,manySMEsrelyonthird-partyserviceproviderswhospecializeincross-borderlogisticsandcompliance,allowingthemerchantstofocusonproductdevelopmentandmarketing.46.Whatisthemaintopicofthispassage?A.Thehistoryofinternationaltrade.B.Theadvantagesandchallengesofcross-bordere-commerceforSMEs.C.Theroleoflargemultinationalcorporationsinglobaltrade.D.Thedeclineoftraditionalretailstoresinlocalmarkets.47.Accordingtothepassage,howdoescross-bordere-commercereducecosts?A.Byusingcheaperrawmaterials.B.Byeliminatingseverallayersofintermediaries.C.Byavoidingalltaxesandcustomsduties.D.Byhiringcheaperlaborinforeigncountries.48.Whatisidentifiedasaprimarylogisticalhurdleforcross-bordere-commerce?A.Thelackofinternationalshippingcompanies.B.Thehighcostandtimeconsumptionofshippingindividualparcels.C.Theinabilitytotrackpackagesinternationally.D.Therestrictiononshippinggoodsoutofbordercities.49.WhydomanySMEsusethird-partyserviceproviders?A.Toreducethequalityoftheirproducts.B.Tohandlecomplexlogisticsandregulatorycompliance.C.Toavoidpayinganytaxestotheirhomecountry.D.Totakeovertheownershipofthebusiness.50.Whatcanbeinferredabouttheregulatoryenvironmentforglobaltrade?A.Itisuniformacrossallcountries.B.Itissimpleandeasyforsmallbusinessestounderstand.C.Itiscomplexandvariessignificantlybycountryandproducttype.D.Itonlyappliestolargecorporations,notSMEs.Text4TheYaluRiverEstuaryWetlandinDandongisacrucialstopoverformillionsofmigratorybirdstravelingbetweenEastAsiaandAustralia.Recognizedasanaturereserveofinternationalimportance,thisecosystemsupportsarichbiodiversity,includingseveralendangeredspeciessuchastheBlack-facedSpoonbill.However,theencroachmentofhumanactivitieshashistoricallythreatenedthisdelicatehabitat.Intheearly2000s,rapideconomicdevelopmentintheregionledtothereclamationofwetlandareasforagriculturalandindustrialuse.Thenaturalwaterflowwasdisrupted,causingthedegradationofreedbeds,whichserveasvitalnestingandfeedinggroundsforthebirds.Thedeclineinbirdpopulationstriggeredalarmamongenvironmentalistsandscientists,promptingimmediateconservationaction.Thelocalgovernment,incollaborationwithinternationalenvironmentalorganizations,launchedacomprehensiverestorationproject.Thecorestrategyinvolved"returninglandtothewetland."Artificialembankmentswereremovedtorestorethenaturaltidalflow,allowingsaltwatertomixwithfreshwater,whichisessentialforthehealthoftheestuaryecosystem.Thousandsofhectaresofreedswerereplanted,andstrictanti-poachingpatrolswereestablished.Theresultsoftheseeffortshavebeenremarkable.Overthepastdecade,thepopulationsofseveralmigratorybirdspecieshavereboundedsignificantly.Thewetlandhasonceagainbecomeavibranthubofavianlife.Furthermore,therestoredwetlandhasprovidedunexpectedeconomicbenefitsthrougheco-tourism.BirdwatchersfromaroundthecountryflocktoDandong,generatingrevenueforlocalbusinessesandcreatingjobsforparkrangersandguides.ThesuccessoftheYaluRiverEstuaryWetlandrestorationservesasapowerfultestamenttothefactthateconomicdevelopmentandenvironmentalconservationarenotmutuallyexclusive.Withcarefulplanninganddedicatedexecution,itispossibletohealthewoundsinflicteduponnatureandbuildasustainablefuturewherebothhumansandwildlifecanthrive.51.Whatistheprimarypurposeofthepassage?A.Todescribetheeconomicvalueofbirdwatchingtourism.B.ToexplainthehistoryofindustrialdevelopmentinDandong.C.ToillustratethedegradationandsuccessfulrestorationoftheYaluRiverEstuaryWetland.D.Tocriticizetheagriculturalpracticesoflocalfarmers.52.Whatcausedthedegradationofthewetlandintheearly2000s?A.Aseveredroughtthatdrieduptheriver.B.Aninvasivespeciesofbird.C.Landreclamationforagricultureandindustry.D.Excessiveuseofchemicalfertilizersbytourists.53.Whatdoesthestrategyof"returninglandtothewetland"involve?A.Convertingindustriallandintoagriculturalzones.B.Removingartificialembankmentstorestorenaturaltidalflow.C.Buildingmoreartificialnestsforthebirds.D.Introducingforeignplantspeciestothearea.54.Whatwasanunexpectedbenefitofthewetlandrestoration?A.Thediscoveryofanewbirdspecies.B.Thegenerationofrevenuethrougheco-tourism.C.Theexpansionofthelocalindustrialport.D.Thecompleteeliminationofallinsectsinthearea.55.Whatisthemainconclusiondrawnfromthepassage?A.Economicdevelopmentalwaysdestroystheenvironment.B.Conservationeffortsareusuallyawasteofgovernmentfunds.C.Itispossibletobalanceeconomicprogresswithenvironmentalprotection.D.Thewetlandwillsoonbecompletelyreplacedbyurbaninfrastructure.Text5(PartB:SentenceFilling)ReadthefollowingtextandchoosethebestsentencefromA-Gtofillineachblank.Therearetwoextrasentences.Sleepisafundamentalbiologicalprocess,yetitremainsoneofthemostpoorlyunderstoodaspectsofhumanlife.Fordecades,scientistshavebeentryingtounravelthemysteryofwhyhumansspendroughlyathirdoftheirlivesunconscious.56________.Oneprominenttheorysuggeststhatsleepservesacrucialrestorativefunctionforthebrain.Duringwakinghours,thebrainconsumesvastamountsofenergy,producingmetabolicwasteproducts.57________.Thisprocessisthoughttobevitalformaintainingoptimalcognitivefunction.Anothersignificantareaofresearchfocusesontheroleofsleepinmemoryconsolidation.Thebraindoesnotsimplyshutdownduringsleep;rather,itishighlyactive,processingandorganizingtheinformationacquiredthroughouttheday.58________.Thisexplainswhyagoodnight'ssleepisoftenrecommendedbeforeanimportantexamorpresentation.Thebrainusesthisdowntimetostrengthenneuralconnectionsanddiscardirrelevantinformation.Despitetheclearbenefitsofsleep,modernlifestyleshaveledtoachronicstateofsleepdeprivationformany.Theinventionofartificiallightand,morerecently,digitaldeviceshasseverelydisruptednaturalcircadianrhythms.59________.Furthermore,thebluelightemittedbyscreenssuppressestheproductionofmelatonin,thehormoneresponsibleforregulatingsleepcycles.Theconsequencesofsleepdeprivationarewell-documentedandalarming.Chroniclackofsleepislinkedtoahostofhealthissues,includingobesity,diabetes,andcardiovasculardisease.60________.Recognizingtheseverityoftheserisks,healthorganizationsarenowemphasizingtheimportanceofsleephygiene,suchasmaintainingaregularsleepscheduleandcreatingadark,quietsleepingenvironment.A.Sleepisalsoconsideredacriticalperiodforemotionalregulationandmentalhealth.B.Thebluelightfromscreenstricksthebrainintothinkingitisstilldaytime.C.Sleepisbelievedtofacilitatethetransferofshort-termmemoriesintolong-termstorage.D.Itisduringsleepthatthebrain'sglymphaticsystemclearsoutthesetoxicbyproducts.E.Theexactreasonswhysleepevolvedarestilldebatedamongresearchers.F.Furthermore,itsignificantlyimpairsattention,decision-making,andreactiontimes.G.Sleepdeprivationhasnoeffectonphysicalhealthbutharmsmentalwell-being.AnswersandExplanationsforReadingComprehension36.B.主旨大意题。文章主要讨论了智慧城市技术在丹东的实施情况及其面临的挑战。37.C.细节题。第二段提到"theimplementationofsmartbusstops...hassignificantlyimprovedthepublictransitexperience"。38.B.细节题。第三段指出"Smartgridsarebeingdeployedtomonitorenergyusageanddistributeelectricitymoreeffectively"。39.B.细节题。最后一段提到为了解决数字鸿沟问题，建立了社区中心提供数字素养培训。40.C.推断题。第四段提到大量收集数据引发了隐私问题，政府建立了严格的数据治理框架，说明数据收集存在需要谨慎管理的隐私风险。41.B.词义推测题。第一段指出我们能即时联系全球任何人，但人们却感到前所未有的孤独，这是一种矛盾现象。42.C.细节题。第二段提到社交媒体平台助长了攀比和表演环境，而非深层的情感交流。43.A.细节题。第三段明确提到长期社交隔离对健康的危害相当于每天抽15支烟。44.C.细节题。第四段建议个人有意识地培养线下关系，并进行“数字排毒”。45.B.细节题。最后一段提到城市规划应优先考虑创建鼓励社交聚集的公共空间，如公园等。46.B.主旨题。文章探讨了中小企业在跨境电商中的优势及面临的挑战。47.B.细节题。第二段提到通过直接卖给消费者，减少了分销商、批发商等中间商环节，从而降低了成本。48.B.细节题。第三段指出将单个包裹从边境城市运送到遥远的大洲通常既昂贵又耗时。49.B.细节题。最后一段提到许多中小企业依赖第三方服务提供商来处理复杂的跨