2026年英语四级《阅读》阅读真题

2026年英语四级《阅读》阅读真题PartIIReadingComprehensionSectionABankedClozeDirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.Pleasemarkthecorrespondingletterforeachitem.Youmaynotuseanyofthewordsinthebankmorethanonce.Theproliferationofmicroplasticsintheworld’soceanshasemergedasoneofthemostpressingenvironmentalcrisesofthe21stcentury.Theseminusculefragments,oftenlessthanfivemillimetersinlength,originatefromthedegradationoflargerplasticdebris,synthetictextiles,andthemicrobeadsusedinpersonalcareproducts.Astheseparticlesinfiltratemarineecosystems,theyare1.______ingestedbyawidearrayofaquaticorganisms,rangingfrommicroscopicplanktontomassivebaleenwhales.Thephysicalandchemicalimpactsofmicroplasticconsumptionareprofound.Physically,theaccumulationofindigestibleplasticswithinthedigestivetractsofmarineanimalscanleadtoafalsesenseofsatiation,causingthemto2.______starvedespitehavingfullstomachs.Chemically,microplasticsactasspongesforenvironmentalpollutants,absorbingtoxiccompoundssuchasPCBsandDDTfromthesurroundingseawater.Whenmarineorganisms3.______thesecontaminatedparticles,thetoxinsarereleasedintotheirtissues,initiatingaprocessofbioaccumulationthat4.______throughoutthefoodweb.Theconcentrationoftheseharmfulsubstances5.______astheymoveupthetrophiclevels,aphenomenonknownasbiomagnification.Themathematicalexpressionfortherateofbioaccumulationcanbemodeledbythedifferentialequation==·−·,whereCrepresentstheconcentrationofthetoxin,andandAddressingthisissuerequiresamultifacetedapproach.Mitigationstrategiesmustnotonlyfocusonthe6.______ofexistingplasticwastebutalsoheavilyemphasizethereductionofplasticproductionatthesource.Innovationsinbiodegradablematerialsofferapromising7.______,yettheirwidespreadadoptionishinderedbyhighmanufacturingcostsanddurabilityissues.Furthermore,improvingwastewatertreatmentfacilitiestocapturemicroplasticsbeforetheyreachnaturalwaterwaysisanessential,albeit8.______,step.Theecologicalequilibriumofouroceansisheavily9.______onimmediatehumanintervention.Withoutaconcertedglobalefforttoimplementstringentenvironmentalpoliciesandpromotesustainableconsumerhabits,thepervasivespreadofmicroplasticswillcontinuetocause10.______damagetomarinebiodiversityand,consequently,tohumanhealth.WordBank:A)inevitablyB)eliminationC)alternativeD)consumeE)reliantF)exacerbatesG)multipliesH)practicallyI)dependentJ)adequateK)ceaseL)magnifiesM)virtuallyN)irreparableO)substituteSectionBMatchingDirections:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.TheEvolutionofRemoteWorkandItsImpactonUrbanLandscapesA)Thesuddenglobalshifttowardsremotework,acceleratedbyunforeseenpublichealthcrises,haspermanentlyalteredthetraditionalparadigmofemployment.Whatbeganasatemporarycontingencymeasurehasmorphedintoafundamentalrestructuringofhowbusinessesoperate.Companiesthatonceinsistedonphysicalpresenceincentralizedofficesarenowembracingdistributedworkforces,recognizingthefinancialandoperationalbenefitsofreducingtheirrealestatefootprints.B)Consequently,thecommercialrealestatesectorisexperiencingunprecedentedturbulence.Majormetropolitanareas,oncecharacterizedbysoaringdemandforpremiumofficespaces,arewitnessingastarkdeclineinoccupancyrates.Landlordsarestrugglingtoattractandretaintenants,forcingthemtoconvertcommercialpropertiesintomixed-useorresidentialbuildings.Thisarchitecturaltransformationisnotmerelyaphysicalreconstruction;itrepresentsaprofoundshiftintheeconomicprioritiesofurbancenters.C)Thedecentralizationoftheworkforcehasalsotriggeredademographicmigrationawayfromhyper-densecitycenterstowardssuburbanandexurbanareas.Employees,nolongertetheredtotheirdailycommutes,areprioritizinglargerlivingspaces,accesstonature,andalowercostoflivingovertheconvenienceofurbanproximity.Thissuburbanrenaissanceisrevitalizinglocaleconomiesinsecondarycitiesandruralcommunities,whicharesuddenlyseeinganinfluxofhigh-earningprofessionals.D)However,thisdemographicshiftposesaseverethreattotheserviceeconomiesthathavetraditionallysupportedthedowntowncorporateecosystem.Restaurants,cafes,drycleaners,andpublictransportationsystemsrelyheavilyonthedailyinfluxofofficeworkers.Withafractionofthefoottraffic,manysmallbusinessesincitycentersfacebankruptcy.Municipalgovernmentsaregrapplingwithdiminishedtaxrevenues,whichdirectlyimpactstheirabilitytofundpublicservicesandinfrastructuremaintenance.E)Tocombattheeconomicdownturnincitycenters,urbanplannersareadvocatingforthe"15-minutecity"concept.Thisurbanplanningparadigmenvisionsneighborhoodswhereresidentscanmeetalltheirbasicneeds—work,shopping,education,healthcare,andleisure—withina15-minutewalkorbikeride.Thegoalistodistributeeconomicactivitymoreevenlyacrossthecityratherthanconcentratingitinasinglebusinessdistrict,therebycreatingmoreresilientandself-sufficientcommunities.F)Theimplementationofthe15-minutecity,however,requiresmassivepublicandprivateinvestment.Existingzoninglaws,whichstrictlyseparateresidential,commercial,andindustrialareas,mustbecomprehensivelyoverhauled.Moreover,thereissignificantresistancefrompropertydeveloperswhohavehistoricallyprofitedfromlarge-scale,single-usecommercialdevelopments.Overcomingtheseregulatoryandeconomichurdlesrequiresstrongpoliticalwillandinnovativefinancingmodels.G)Fromanenvironmentalperspective,thedeclineindailycommutinghasledtoanoticeable,albeitpotentiallytemporary,reductioningreenhousegasemissions.Urbanairqualityhasimprovedinmanymajorcities,andthereductioninnoisepollutionhashadpositiveeffectsonlocalwildlife.Ifremoteworkorhybridmodelssustainthislowerlevelofvehiculartraffic,citiescouldpermanentlylowertheircarbonfootprints,aligningwithbroaderclimatechangemitigationgoals.H)Yet,theenvironmentalbenefitsofreducedcommutingmaybeoffsetbyincreaseddomesticenergyconsumption.Whenemployeesworkfromhome,theburdenofheating,cooling,andpoweringelectronicdevicesshiftsfromasingle,energy-efficientofficebuildingtohundredsofindividual,potentiallylessefficientresidentialproperties.Thenetenvironmentalimpactofremoteworkishighlydependentontheenergyefficiencyofthehousingstockandthesustainabilityoflocalpowergrids.I)Thesocialfabricoftheworkplacehasalsobeenfundamentallychallenged.Whileremoteworkoffersflexibilityandwork-lifebalance,itoftenengendersfeelingsofisolationamongemployees.Thespontaneousinteractionsthatfosterinnovationandcompanyculture—theso-called"watercooler"moments—aredifficulttoreplicateinavirtualenvironment.Companiesarenowtaskedwithreimaginingcorporatecultureandfindingdigitalwaystobuildtrustandcollaborationamongdispersedteams.J)Ultimately,thehybridmodel,combiningremoteflexibilitywithperiodicin-personcollaboration,isemergingasthemostviablelong-termsolution.Thisapproachseekstobalancetheautonomydesiredbyemployeeswiththecollaborativeneedsoftheorganization.Ascitiesadapttothisnewrhythm,theurbanlandscapewilllikelybecomelesscentralizedandmorepolycentric,characterizedbymultiplesmallerhubsratherthanonedominantdowntowncore.Statements:11.Thenetenvironmentaladvantageofworkingfromhomeiscloselytiedtotheenergyefficiencyofresidentialbuildings.12.Thetraditionalmodelofhavingallemployeesinonecentralofficeisbeingabandonedbyenterprises.13.Smallbusinesseslocatedincitycentersaresufferingfinanciallyduetotheabsenceofofficeworkers.14.Theconceptofthe15-minutecityaimstospreadeconomicactivityevenlyratherthankeepingitconcentrated.15.Theshiftofworkerstosuburbanareashasbroughteconomicgrowthtosmallertowns.16.Thealterationofzoningregulationsisanecessaryconditionforcreating15-minutecities.17.Remoteworkcanleadtoalackofsocialinteraction,whichcompaniesmustaddressdigitally.18.Thehybridworkmodelattemptstosatisfyboththeemployees'needforindependenceandthecompanies'needforteamwork.19.Thephysicalconversionofofficebuildingsreflectsadeeperchangeintheeconomicfocusofurbanareas.20.Reduceddailytravelhasresultedinbetterairqualityandlessnoiseinvariouscities.SectionCCarefulReadingDirections:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).Youshoulddecideonthebestchoice.PassageOneTheintegrationofArtificialIntelligence(AI)intotherealmofmedicaldiagnosticshasbeenhailedasarevolutionaryleapforward,promisingunprecedentedaccuracyandefficiency.Machinelearningalgorithms,trainedonvastdatasetsofmedicalimagesandpatienthistories,cannowidentifyanomaliesthatareoftenimperceptibletothehumaneye.ProponentsarguethatAIdoesnotreplacethephysician;rather,itservesasapowerful"secondpairofeyes,"reducingtherateofmisdiagnosesandcatchingdiseasesatearlier,moretreatablestages.Infieldslikeradiologyanddermatology,AIsystemshavedemonstratedtheabilitytodetectcertaincancerswithaccuracyratesrivalingorevensurpassingthoseofseasonedspecialists.However,thedeploymentofAIinhealthcareisfraughtwithethicalandpracticaldilemmas.Oneprimaryconcernisthe"blackbox"natureofmanydeeplearningalgorithms.Whilethesesystemscanoutputahighlyaccuratediagnosis,theinternalprocessesbywhichtheyarriveatthatconclusionareoftenopaqueandunexplainable.Inmedicine,the"why"isjustasimportantasthe"what."IfanAIsystemrecommendsalife-alteringtreatmentorsurgery,physiciansandpatientsmustunderstandtherationalebehindtherecommendation.Withouttransparency,establishingtrustbecomesexceedinglydifficult.Furthermore,thedatasetsusedtotraintheseAIsystemsarefrequentlyunrepresentativeoftheglobalpopulation.MostmedicalAIalgorithmsaredevelopedusingdatafromWestern,industrializednations.Consequently,thesesystemsmayexhibitbiaswhenappliedtoindividualsfromdifferentethnicbackgroundsordevelopingcountries,leadingtodisparitiesindiagnosticaccuracy.Forinstance,anAItrainedpredominantlyonlighterskintonesmayfailtoidentifymelanomasinpatientswithdarkerskin.Thisalgorithmicbiasrisksexacerbatingexistinginequalitiesinglobalhealthcare.Tomitigatetheserisks,regulatoryframeworksmustevolve.ThereisapressingneedforstringentauditingofAIsystemstoensuretheyarebothaccurateandequitable.DevelopersmustprioritizethecreationofexplainableAI(XAI),whichprovidestransparentreasoningforitsoutputs.Additionally,diverseandinclusivedatasetsareparamounttoensuringthatthebenefitsofmedicalAIareuniversallyaccessible.OnlythroughcarefulregulationandinclusivedesigncanAItrulyfulfillitspromiseofdemocratizinghealthcare.21.Accordingtothefirstparagraph,whatistheprimaryroleofAIinmedicaldiagnostics?A)Tocompletelyreplacehumanphysiciansinthediagnosticprocess.B)Toactasasupplementarytoolthathelpsreducediagnosticerrors.C)Tohandleadministrativetaskswhiledoctorsfocusonimaging.D)Toprovideexperimentaltreatmentsforincurablediseases.22.Whatdoestheterm"blackbox"(Paragraph2)implyregardingAIsystems?A)Theyarephysicallysecureandprotectpatientprivacy.B)Theyarehighlyefficientbutexpensivetomaintain.C)Theirdecision-makingprocessesarenottransparentoreasilyunderstood.D)Theyonlyoperateindarkroomswithinhospitalenvironments.23.WhydoAIsystemssometimesexhibitbias,asmentionedinthepassage?A)Becausethealgorithmsareintentionallyprogrammedtofavorcertaingroups.B)Becausetheyaretrainedondatathatlacksglobalrepresentation.C)BecausehumandoctorsinterferewiththeAI'sdiagnosticprocess.D)BecausepatientsfromdevelopingcountriesrefusetouseAIsystems.24.Theexampleofmelanomadetectionisusedtoillustrate______.A)thesuperiorityofAIoverhumandermatologistsB)thenecessityofusingAIforskincancerscreeningC)thedangerofalgorithmicbiasduetounrepresentativedataD)thehighcostoftreatingskindiseasesglobally25.Whatistheauthor'sattitudetowardsthefutureofAIinhealthcare?A)HighlyoptimisticthatAIwillsolveallmedicalissues.B)PessimisticandbelievesAIshouldbebannedinmedicine.C)Cautiousbutbelievesinitspotentialifproperlyregulated.D)Indifferenttothetechnologicaladvancementsindiagnostics.PassageTwoThepsychologicalbenefitsofurbanagriculturehaveincreasinglycomeunderthespotlightasmoderncitiesgrapplewiththementalhealthimplicationsofhigh-densityliving.Communitygardens,rooftopfarms,andverticalagriculturearenolongerviewedmerelyasaestheticenhancementsorlocalizedfoodsources;theyarenowrecognizedasvitalsanctuariesforcognitiverestoration.TheAttentionRestorationTheory(ART)positsthatexposuretonaturalenvironmentsallowsthehumanbrain’sdirectedattention,whichfatiguesundertheconstantsensoryoverloadofurbanlife,torecover.Urbangreenspaces,evensmall-scaleagriculturalplots,providethe"softfascination"necessaryforthiscognitivereplenishment.Recentempiricalstudieshavequantifiedthesepsychologicalbenefits.Researchconductedindenselypopulatedmetropolitanareashasshownthatindividualswhoactivelyparticipateincommunitygardeningexhibitsignificantlylowerlevelsofcortisol,thebody'sprimarystresshormone,comparedtothosewhoengageinotherpassiveleisureactivities.Furthermore,theactofnurturingplantsfromseedtoharvestinstillsaprofoundsenseofaccomplishmentandagency,whichisparticularlytherapeuticforindividualsexperiencingurbanalienationormilddepression.Thecommunalaspectofthesegardensalsofosterssocialcohesion,bridgingdemographicdividesandcreatingmicro-communitiesbasedonsharedlaborandmutualsupport.However,theimplementationofurbanagricultureasapublichealthstrategyisnotwithoutitschallenges.Themostglaringobstacleistheissueoflandtenureandspatialconstraints.Incitieswhererealestateisatapremium,establishingpermanentgreenspacesoftenconflictswithaggressivedevelopmentalpressures.Gardensarefrequentlyrelegatedtovacantlotsthatareonlytemporarilyavailable,subjectingparticipantstothepsychologicalstressofpotentialdisplacement.Thisparadoxicallyunderminestheverytherapeuticbenefitsthegardensaremeanttoprovide.Moreover,thesocio-economicdimensionsofurbanagriculturemustbecriticallyexamined.Thereisariskthatthesegreeninitiativesbecomepartofa"greengentrification"process.Whileupscaleneighborhoodsreadilyintegratecommunitygardensintotheiraestheticandculturallandscapes,marginalizedcommunitiesfrequentlylackthepoliticalcapitalandfundingtoestablishandmaintainthem.Ifnotintentionallymanagedtopromoteequitableaccess,urbanagriculturecouldinadvertentlywidenthesocio-economicgap,transformingagrassrootsmentalhealthinterventionintoaprivilegeoftheaffluent.26.AccordingtoAttentionRestorationTheory(ART),howdonaturalenvironmentshelpthebrain?A)Theyprovideexcitingsensoryexperiencesthatstimulatethemind.B)Theyallowthebrain'sdirectedattentiontorecoverfromfatigue.C)Theyforceindividualstofocusintenselyoncomplexagriculturaltasks.D)Theyreducecortisollevelsthroughphysicalexerciseandmanuallabor.27.Whatpsychologicalbenefitisspecificallyassociatedwiththeactofgardening?A)Itcreatesasenseofaccomplishmentandpersonalcontrol.B)Itallowsindividualstoearnanincomefromsellingproduce.C)Itteachescomplexagriculturaltechniquestourbanresidents.D)Ithelpsindividualsavoidsocialinteractionandfindpeace.28.Whatisthe"paradox"mentionedinthethirdparagraph?A)Gardensimprovementalhealthbutalsocausephysicalfatigue.B)Thetemporarynatureofgardenspacescancausestress,counteringtheirtherapeuticpurpose.C)Urbanagricultureproduceshealthyfoodbutusespollutedcitysoil.D)Gardensaremeantforrelaxationbutareoftenbuiltinhigh-stressurbanareas.29.Whatdoesthepassagesuggestabout"greengentrification"?A)Itisagovernmentpolicytoforcelow-incomeresidentsoutofgreenareas.B)Itreferstotheprocesswheregreeninitiativesdisproportionatelybenefitwealthyneighborhoods.C)Itdescribestheenvironmentaldegradationthatoccursinmarginalizedcommunities.D)Itisagrassrootsmovementtolowerthecostoflivinginwealthyareas.30.Whatisthemainpurposeoftheauthorinwritingthispassage?A)Toexplainthetechnicalprocessofbuildingurbanrooftopfarms.B)Toarguethaturbanagricultureshouldreplacetraditionalpublicparks.C)Topresentthepsychologicalbenefitsofurbanagriculturewhilewarningofitssocio-economicchallenges.D)Tocriticizecitygovernmentsforprioritizingrealestateovermentalhealth.答案与解析SectionA:BankedCloze1.【答案】A)inevitably【解析】本题考查副词辨析。空格所在句意为“当这些微粒渗透到海洋生态系统中时，它们______被各种水生生物摄入”。这里需要一个副词修饰动词ingested（摄入）。inevitably意为“不可避免地”，符合语境，因为微塑料广泛存在，海洋生物不可避免地会摄入。practically和virtually虽然也可作副词，但通常表示“几乎，事实上”，不如inevitably在此处表达因果必然性准确。2.【答案】K)cease【解析】本题考查动词辨析。句意为“在物理上，海洋动物消化道内无法消化的塑料积累会导致一种虚假的饱腹感，导致它们即使胃是满的也______挨饿”。空格前有causingthemto，需要动词原形。cease意为“停止”，ceasetostarve表达反义，与句意不符；但结合上下文，虚假的饱腹感导致它们“停止进食”从而挨饿，因此cease符合“停止（进食）”的语境。weighs（称重）和consume（消耗）不符合语法与语义。3.【答案】D)consume【解析】本题考查动词辨析。句意为“当海洋生物______这些受污染的颗粒时，毒素就会被释放到它们的组织中”。空格需要一个动词原形，且主语是marineorganisms，宾语是particles。consume意为“食用，消耗”，符合海洋生物摄入微塑料的语境。4.【答案】F)exacerbates【解析】本题考查动词辨析。句意为“生物积累过程在整个食物网中______”。空格在that引导的定语从句中作谓语，先行词是process（过程，单数），因此动词需加-s。exacerbates意为“加剧，恶化”，在此处表示毒素积累过程在食物网中使情况更加恶化，符合语境。magnifies（放大）通常指体积或程度，不用于修饰过程的扩散。5.【答案】G)multiplies【解析】本题考查动词辨析。句意为“随着这些有害物质在营养级中向上移动，其浓度______，这种现象被称为生物放大作用”。主语concentration为单数，需加-s。multiplies意为“繁殖，成倍增加”，符合毒素浓度随食物链逐级放大的科学事实。此处也可以用magnifies，但结合后文的biomagnification，multiplies强调数量的成倍增长，更为贴切。6.【答案】B)elimination【解析】本题考查名词辨析。句意为“缓解策略不仅必须关注现有塑料垃圾的______，还要重点强调从源头上减少塑料生产”。空格前是the，后接of，需要名词。elimination意为“消除，根除”，eliminationofexistingplasticwaste（消除现有塑料垃圾）符合语境。7.【答案】O)substitute【解析】本题考查名词辨析。句意为“生物降解材料的创新提供了一个有前途的______，然而其广泛采用却受到高昂制造成本和耐用性问题的阻碍”。substitute意为“替代品”，符合使用可降解材料替代传统塑料的语境。alternative也有替代之意，但alternative更侧重于“选择”，而substitute更侧重于“替代材料/物品”，且后文提及材料，substitute更为合适。8.【答案】J)adequate【解析】本题考查形容词辨析。句意为“此外，改善废水处理设施以在微塑料到达天然水道之前将其捕获，是一个必不可少的、尽管______的步骤”。adequate意为“足够的，充分的”，在此处表示虽然这一步骤只能起到有限的、足够的作用（并非彻底解决），但也是必不可少的。结合句意，although表转折，adequate与essential形成让步关系。9.【答案】I)dependent【解析】本题考查形容词搭配。句意为“我们海洋的生态平衡严重______于人类的立即干预”。固定搭配bedependenton意为“依赖于”，符合语境。reliant虽也有依赖之意，但通常搭配relianton，但在学术文本中dependenton更为标准和常见。10.【答案】N)irreparable【解析】本题考查形容词辨析。句意为“……微塑料的普遍蔓延将继续对海洋生物多样性，并因此对人类健康造成______损害”。irreparable意为“不可挽回的，无法弥补的”，符合如果不采取行动，将造成永久性破坏的语境。SectionB:Matching11.【答案】H【解析】定位词：netenvironmentaladvantage,energyefficiency,residentialbuildings。文章H段指出，“居家办公带来的环境效益可能会被增加的国内能源消耗所抵消……远程办公对环境的净影响高度依赖于现有住房的能源效率和当地电网的可持续性。”句意与H段完全吻合。12.【答案】A【解析】定位词：traditionalmodel,centraloffice,abandoned。文章A段指出，“曾经坚持在集中式办公室进行实地办公的公司现在开始接受分布式劳动力……”句意说明企业正在放弃传统的集中办公模式，与A段内容一致。13.【答案】D【解析】定位词：Smallbusinesses,citycenters,absenceofofficeworkers。文章D段指出，“由于客流量只有原来的一小部分，市中心的许多小企业面临破产。餐馆、咖啡馆……严重依赖每天涌入的上班族。”句意表明市中心小企业因缺乏上班族而遭受财务损失，对应D段。14.【答案】E【解析】定位词：15-minutecity,spreadeconomicactivity,concentrated。文章E段提到，“目标是更均匀地在整个城市分布经济活动，而不是将其集中在单一的商业区”。句意与E段表述完全一致。15.【答案】C【解析】定位词：shiftofworkers,suburbanareas,economicgrowth。文章C段指出，“这种人口结构的转变引发了从高密度市中心向郊区和远郊的人口迁移……这种郊区复兴正在振兴二级城市和农村社区的地方经济。”句意表明工人向郊区转移带动了小城镇经济增长，对应C段。16.【答案】F【解析】定位词：zoningregulations,necessarycondition,15-minutecities。文章F段指出，“实施15分钟城市需要大量的公共和私人投资。现有的分区法……必须进行彻底改革。”句意表明改变分区法是建设15分钟城市的必要条件，对应F段。17.【答案】I【解析】定位词：Remotework,lackofsocialinteraction,digitally。文章I段提到，“虽然远程工作提供了灵活性……但它往往会在员工中引发孤立感……公司现在的任务是通过数字方式重建企业文化……建立信任和协作。”句意表明远程工作可能导致缺乏社交互动，公司需通过数字方式解决，对应I段。18.【答案】J【解析】定位词：hybridworkmodel,independence,teamwork。文章J段指出，“混合模式……结合了远程灵活性与定期的面对面协作，正在成为最可行的长期解决方案。这种方法试图平衡员工期望的自主性与组织的协作需求。”句意与J段完美契合。19.【答案】B【解析】定位词：physicalconversion,economicfocus。文章B段指出，“房东正在努力吸引和留住租户，迫使他们将商业地产改建为混合用途或住宅建筑。这种建筑改造不仅仅是物理上的重建；它代表了城市中心经济优先事项的深刻转变。”句意表明办公楼的物理改造反映了经济重心的改变，对应B段。20.【答案】G【解析】定位词：Reduceddailytravel,betterairquality,lessnoise。文章G段指出，“日常通勤的减少导致温室气体排放量显著减少……许多大城市的空气质量有所改善，噪音污染的减少对当地野生动物产生了积极影响。”句意对应G段内容。SectionC:CarefulReadingPassageOne21.【答案】B)Toactasasupplementarytoolthathelpsreducediagnosticerrors.【解析】细节题。根据第一段第三句“ProponentsarguethatAIdoesnotreplacethephysician;rather,itservesasapowerful'secondpairofeyes,'reducingtherateofmisdiagnoses...”（支持者认为，人工智能并没有取代医生；相反，它作为一只强大的“第二只眼”，降低了误诊率）可知，AI在医疗诊断中的主要角色是作为辅助工具减少误诊。A选项“完全取代医生”与原文相悖；C选项“处理行政事务”原文未提及；D选项“提供实验性治疗”无中生有。故选B。22.【答案】C)Theirdecision-makingprocessesarenottransparentoreasilyunderstood.【解析】词汇理解题。根据第二段第二、三句“...the'blackbox'natureofmanydeeplearningalgorithms.Whilethesesystemscanoutputahighlyaccuratediagnosis,theinternalprocessesbywhichtheyarriveatthatconclusionareoftenopaqueandunexplainable.”（许多深度学习算法的“黑匣子”性质。虽然这些系统可以输出高度准确的诊断，但它们得出结论的内部过程通常是不透明和无法解释的）可知，“黑匣子”意味着决策过程不透明、难以理解。A、B、D选项均不符合语境。故选C。23.【答案】B)Becausetheyaretrainedondatathatlacksglobalrepresentation.【解析】细节题。根据第三段第二、三句“MostmedicalAIalgorithmsaredevelopedusingdatafromWestern,industrializednations.Consequently,thesesystemsmayexhibitbiaswhenappliedtoindividualsfromdifferentethnicbackgrounds...”（大多数医疗人工智能算法是使用来自西方工业化国家的数据开发的。因此，当这些系统应用于不同种族背景的人时，可能会表现出偏见）可知，偏见产生的原因是训练数据缺乏全球代表性。A选项“被故意编程偏袒某些群体”错误；C、D选项原文未提及。故选B。24.【答案】C)thedangerofalgorithmicbiasduetounrepresentativedata【解析】推断/例证题。根据第三段最后一句“Forinstance,anAItrainedpredominantlyonlighterskintonesmayfailtoidentifymelanomasinpatientswithdarkerskin.Thisalgorithmicbiasrisksexacerbatingexistinginequalities...”（