2025年下半年全国英语等级考试（PETS）三级仿真试题及答案解析(甘肃天水)

2025年下半年全国英语等级考试（PETS）三级仿真试题及答案解析(甘肃天水)一、听力（每题1分，共25分）PartA短对话（第1-5题）1.Whatdoesthewomanwantthemantodo?A.Repairhercomputer.B.Lendherhiscomputer.C.Giveheraridetothestore.D.Helphermovethefurniture.答案C解析对话中女士说"Ineedtogettotheelectronicsstorebeforeitcloses,butmycarbrokedown."男士回应"Icandriveyouthereifyouwant."可见女士是请男士载她去商店。2.Whenwillthemeetingstart?A.At9:00.B.At9:30.C.At10:00.D.At10:30.答案B解析男士说"Themeetingwasscheduledfor9:00,butwe'rewaitingforthemanagertoarrive,soit'sbeenpushedbackhalfanhour."即推迟半小时，从9:00变为9:30。3.Whatistheprobablerelationshipbetweenthetwospeakers?A.Doctorandpatient.B.Teacherandstudent.C.Shopassistantandcustomer.D.Managerandsecretary.答案C解析女士说"CanIhelpyoufindanything,sir?"男士回答"Yes,I'mlookingforapairofblackleathershoesinsize42."这是典型的店员与顾客之间的对话。4.Whydoesthemanlooktired?A.Hestayeduplatewatchingamovie.B.Heworkedovertimelastnight.C.Hehadtroublefallingasleep.D.Hewaspreparingforanexam.答案D解析男士说"Istayedupuntil3a.m.reviewingmynotesforthebiologyfinaltomorrow."他熬夜是因为准备生物期末考试。5.Whatwilltheweatherbeliketomorrow?A.Sunny.B.Rainy.C.Cloudy.D.Snowy.答案B解析天气预报说"Tomorrowwillseescatteredshowersthroughouttheday,withahighof18degrees."明天有阵雨。PartB长对话与独白（第6-25题）听第6-8段材料，回答第6-8题。6.Whatisthewoman'smainconcernabouthernewjob?A.Thesalaryistoolow.B.Sheisnotfamiliarwiththelocallanguage.C.Theworkloadistooheavy.D.Shehastorelocatetoanothercity.答案B解析女士提到"Mybiggestworryisthatthecompany'sclientsaremostlylocalpeoplewhospeaktheregionaldialect,andmyChineseisstillatabasiclevel."7.Whatsuggestiondoesthemangivetothewoman?A.Takealanguagecourse.B.Askforatransfertoanotherbranch.C.Practicecommunicatingwithlocalcolleagues.D.Findajobthatrequireslesslocallanguageuse.答案C解析男士建议"Whydon'tyouaskoneofyourlocalcolleaguestobeyourlanguagepartner?Thatwayyoucanpracticedailyinarealworkingenvironment."8.Howdoesthewomanfeelaboutthesuggestion?A.Shethinksitisimpractical.B.Sheconsidersitagoodidea.C.Shehasalreadytrieditwithoutsuccess.D.Sheishesitantbecausesheisshy.答案B解析女士回应"Thatsoundslikeagreatplan!I'lltalktomycolleagueXiaoLiaboutittomorrow."她认为这是一个好主意。听第9-11段材料，回答第9-11题。9.Whatisthemaintopicofthelecture?A.ThehistoryoftheSilkRoad.B.Theimpactofclimatechangeonagriculture.C.Thedevelopmentofmoderntransportation.D.TheculturalexchangebetweenEastandWest.答案A解析教授开场即说"Todaywe'regoingtotracetheoriginsandevolutionoftheSilkRoad,theancientnetworkoftraderoutesthatconnectedtheEastandWest."10.WhendidtheSilkRoadreachitspeak?A.DuringtheHanDynasty.B.DuringtheTangDynasty.C.DuringtheYuanDynasty.D.DuringtheMingDynasty.答案B解析讲座中提到"AlthoughtheSilkRoadwasestablishedintheHanDynasty,itreacheditsgoldenageduringtheTangDynasty,whentradeflourishedasneverbefore."11.WhatwasoneofthemostimportantgoodstradedontheSilkRoad?A.Porcelain.B.Tea.C.Silk.D.Spices.答案C解析讲座明确指出"Silkwas,ofcourse,themostfamousandsought-aftercommoditythatgavetherouteitsname."听第12-15段材料，回答第12-15题。12.Wheredoestheconversationmostlikelytakeplace?A.Atatravelagency.B.Atahotelreception.C.Atanairportcheck-incounter.D.Atarailwaystation.答案B解析女士说"WelcometotheGrandHotel.HowmayIassistyou?"男士回答"I'dliketocheckin,please."这是酒店前台场景。13.Whattypeofroomdoesthemanprefer?A.Asingleroomfacingthestreet.B.Adoubleroomfacingthecourtyard.C.Asuitewithaseaview.D.Aroomonthetopfloor.答案B解析男士说"Ireservedadoubleroom,andI'dpreferonethatfacesthecourtyard,asittendstobequieteratnight."14.Howmanynightswillthemanstay?A.Twonights.B.Threenights.C.Fournights.D.Fivenights.答案B解析男士回答"I'llbestayingforthreenights,checkingoutonFridaymorning."15.Whattimeisbreakfastserved?A.From6:30to9:30.B.From7:00to10:00.C.From7:30to10:30.D.From8:00to11:00.答案C解析前台告知"Breakfastisservedinthelobbyrestaurantfrom7:30to10:30eachmorning."听第16-20段材料，回答第16-20题。16.Whatisthespeakermainlytalkingabout?A.Theimportanceofregularexercise.B.Thebenefitsofabalanceddiet.C.Thedangersofsmoking.D.Theimportanceofadequatesleep.答案D解析演讲者开篇说"TodayIwanttoemphasizesomethingweoftenoverlook—theprofoundimportanceofqualitysleepforourphysicalandmentalhealth."17.Accordingtothespeaker,howmanyhoursofsleepdomostadultsneed?A.5to6hours.B.7to8hours.C.8to9hours.D.9to10hours.答案B解析演讲中提到"Whileindividualneedsvaryslightly,mostadultsfunctionbestwithseventoeighthoursofsleeppernight."18.Whathappenswhenpeoplearesleep-deprived?A.Theirmemoryimproves.B.Theirimmunesystemweakens.C.Theirappetitedecreases.D.Theirbloodpressuredrops.答案B解析演讲者指出"Chronicsleepdeprivationhasbeenshowntosuppresstheimmunesystem,makingpeoplemoresusceptibletocommonillnesses."19.Whatdoesthespeakersuggestforbettersleep?A.Drinkingcoffeebeforebedtime.B.Exercisingvigorouslyrightbeforebed.C.Keepingaconsistentsleepschedule.D.Watchingtelevisiontorelax.答案C解析演讲者建议"Oneofthemosteffectivestrategiesistomaintainaregularsleepschedule,goingtobedandwakingupatthesametimeeveryday,evenonweekends."20.Whatisthespeaker'soveralltone?A.Humorousandlighthearted.B.Seriousandinformative.C.Angryandcritical.D.Sadandpessimistic.答案B解析整段独白以事实和数据为基础，语气认真、信息量大，属于严肃且有教育意义的演讲风格。听第21-25段材料，回答第21-25题。21.Whatisthewoman'spurposeincallingtheman?A.Tocancelanappointment.B.Toaskfordirections.C.Toinvitehimtoaparty.D.Toinformhimofaschedulechange.答案D解析女士说"I'mcallingtoletyouknowthattomorrow'strainingsessionhasbeenmovedfrom2p.m.to4p.m.duetoaroombookingconflict."22.Whatdayisthetrainingsessionoriginallyscheduledfor?A.Monday.B.Tuesday.C.Wednesday.D.Thursday.答案C解析男士回应"Oh,that'sconvenient—IhadanothermeetingonWednesdaymorningthatIwasworriedwouldclash.Thenewtimeworksmuchbetterforme."23.Wherewillthetrainingsessionbeheld?A.InMeetingRoom2onthefirstfloor.B.Intheconferencehallonthethirdfloor.C.InTrainingRoom5onthesecondfloor.D.Intheauditoriuminthebasement.答案A解析女士补充说"ThesessionwillbeheldinMeetingRoom2onthefirstfloor,whichisjustbesidethemainentrance."24.Whatdoesthemanneedtobringtothesession?A.HisIDcard.B.Hislaptop.C.Aprintedcopyoftheagenda.D.Anotebookandapen.答案B解析女士提醒"Pleaseremembertobringyourlaptop,aswe'llbedoingsomehands-onexerciseswiththenewsoftware."25.Howdoesthemanrespondattheendofthecall?A.Heisunhappyaboutthechange.B.Hethanksthewomanforlettinghimknow.C.Heaskstorescheduleforanotherday.D.Hesayshewillnotbeabletoattend.答案B解析男士最后说"Thankssomuchfortheheads-up.I'llupdatemycalendarrightaway."他对通知表示感谢。二、英语知识运用（每题0.5分，共15分）完形填空：阅读下面的短文，从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。Atmyfather'sfuneral,Iwasaskedtogiveaeulogy.Standingbeforethecrowd,Ifeltamixtureofgriefandgratitude.Myfatherhadbeenamanoffewwords,buthispresencehadalwaysbeena26inmylife.Hewasacarpenterbytrade,andIrememberwatchinghimworkinhisworkshop,hishands27skillfullyoverthewood.Henevertoldmehowtolive;hesimplyshowedmethroughhisactions.IrecalledoneparticularsummerwhenIwasfourteen.Ihadbeencomplainingaboutaschoolproject,sayingitwastoodifficult.Myfatherlistenedsilently,then28meoutsidetohisworkshop.Hehandedmeablockofroughoakandachisel."Everypieceofwoodhasashapeinsideit,"hesaid."Yourjobistofindit."Iworkedonthatblockforweeks,andbytheendofthesummer,Ihadcarvedasmallbird.Itwascrudeandimperfect,butmyfatherhelditinhishandsandsaid,"Nowyouknow."Thosethreewordsmeantmoretomethananylectureevercould.Afterhisdeath,Ifoundthatwoodenbirdamonghisbelongings.Hehadkeptitallthoseyears,29inadrawerwithhismostprecioustools.AsIhelditatthefuneral,Iunderstoodsomethingmyfatherhadknownallalong:lifeisnotaboutthegrandgesturesbutaboutthesmall,quietactsof30thatshapeusintowhoweare.26.A.burdenB.comfortC.challengeD.mystery答案B解析前文说父亲沉默寡言，但他的存在给作者带来安慰（comfort）。burden负担、challenge挑战、mystery谜团，均与语境不符。27.A.shakingB.movingC.tremblingD.waving答案B解析此处描述父亲的手在木头上"灵巧地移动"，moving最恰当。shaking颤抖、trembling发抖，均与"skillfully"矛盾。28.A.forcedB.invitedC.ledD.pushed答案C解析父亲"领"作者到工作室，led最为自然，体现了引导而非强迫（forced/pushed）或正式邀请（invited）的意味。29.A.hiddenB.lockedC.storedD.wrapped答案C解析木鸟被"存放"在抽屉里，stored最合适。hidden暗示刻意隐藏（父亲没有刻意藏，只是保存），locked需要钥匙，wrapped需要包裹，均不贴切。30.A.kindnessB.patienceC.wisdomD.love答案D解析文章主旨是父亲通过细微的行为表达对家人的爱（love），正是这些充满爱的举动塑造了作者的人生。三、阅读理解（每题2分，共40分）PartA选择题（第31-45题）阅读下面的短文，从每题所给的A、B、C、D四个选项中选出最佳选项。Passage1Theconceptofa"gapyear"—aperiodoftime,typicallyayear,thatastudenttakesoffbetweenhighschoolandcollege—hasgainedsignificantpopularityinrecentyears.Whilesomeviewitasavaluableopportunityforpersonalgrowthandexploration,othersseeitasawasteoftimethatdelaysacademicprogress.Proponentsofthegapyeararguethatitprovidesyoungpeoplewithinvaluablelifeexperience.Duringthistime,studentscantravel,volunteer,orwork,gainingskillsandperspectivesthatcannotbelearnedinaclassroom.Manyreportreturningtotheirstudieswithrenewedmotivationandaclearersenseofpurpose.A2018studybytheAmericanGapAssociationfoundthatstudentswhotookagapyearhadhighercollegeGPAsthanthosewhodidnot,suggestingthatthebreakdoesnotharmacademicperformance.However,criticscontendthatagapyearisaprivilegethatnoteveryonecanafford.Internationaltravelandvolunteerprogramsoftencomewithsubstantialcosts,makingtheminaccessibletostudentsfromlower-incomefamilies.Furthermore,thereisariskthatsomestudentsmayneverreturntotheireducation,particularlyiftheyfindstableemploymentduringtheirtimeoff.Thetruth,perhaps,liessomewhereinbetween.Agapyearisneitheramagicsolutionnoradisastrousmistake.Itsvaluedependslargelyonhowitisspent.Studentswhousethetimemeaningfully—whetherthroughstructuredprogramsorindependentprojects—arelikelytobenefit.Thosewhosimplyidleawaythemonthsmayfindthemselvesnobetteroffthanwhentheystarted.31.Whatisthemainpurposeofthispassage?A.Toarguethatgapyearsareawasteoftime.B.Topresentbothsidesofthegapyeardebate.C.Toencourageallstudentstotakeagapyear.D.Todescribethehistoryofthegapyearconcept.答案B解析文章先分别介绍了支持者与反对者的观点，最后提出中庸的看法，属于典型的"双方观点+作者立场"结构。32.AccordingtotheAmericanGapAssociationstudy,studentswhotookagapyear______.A.weremorelikelytodropoutofcollegeB.performedbetteracademicallyincollegeC.hadmoredifficultyadjustingtocollegelifeD.reportedlowersatisfactionwiththeircollegeexperience答案B解析第二段末明确指出"studentswhotookagapyearhadhighercollegeGPAsthanthosewhodidnot"，即大学成绩更好。33.Whatisonecriticismofthegapyearmentionedinthepassage?A.Itcausesstudentstoloseacademicmotivation.B.Itisnotavailabletostudentsfrompoorfamilies.C.Ithasnoeffectonpersonaldevelopment.D.Itdelaysstudents'careerprospectspermanently.答案B解析第三段指出批评者认为gapyear是一种特权，国际旅行和志愿项目费用高昂，低收入家庭学生无法承担。34.Whatdoestheauthorsuggestaboutthevalueofagapyear?A.Itisuniversallybeneficialtoallstudents.B.Itdependsonhowthetimeisused.C.Itisonlyvaluableforwealthystudents.D.Itcannotbedeterminedinanyway.答案B解析末段明确指出"itsvaluedependslargelyonhowitisspent"——能否受益取决于时间如何利用。35.Theword"idle"inthelastparagraphisclosestinmeaningto______.A.wasteB.spendC.enjoyD.plan答案A解析"idleaway"意为"虚度、浪费"，与"waste"意思最接近。Passage2Forcenturies,humanityhasbeenfascinatedbytheideaoftimetravel.FromH.G.Wells'sTheTimeMachinetoHollywoodblockbusters,theconcepthascapturedourcollectiveimagination.Butistimetravelactuallypossible?Theanswer,accordingtomodernphysics,ismorecomplicatedthanasimpleyesorno.Einstein'stheoryofspecialrelativity,publishedin1905,revealedthattimeisnotabsolute—itflowsatdifferentratesdependingonhowfastanobjectismovingrelativetoanobserver.Thisphenomenon,knownastimedilation,hasbeenexperimentallyverified.AstronautsontheInternationalSpaceStation,forexample,ageslightlyslowerthanpeopleonEarthduetotheirhighorbitalvelocity.Inasense,theyarealreadytimetravelers,albeitbyfractionsofasecond.Travelingtothefuture,then,istheoreticallypossible.Ifapersonweretotravelatspeedsclosetothespeedoflight,theywouldexperiencetimemuchmoreslowlythanthoseleftbehindonEarth.Uponreturning,theywouldfindthatdecadesorevencenturieshadpassedinwhatfeltlikeonlyafewyears.Travelingtothepast,however,presentsafargreaterchallenge.Thelawsofphysicsaswecurrentlyunderstandthemdonotallowforbackwardtimetravel.Somescientistshaveproposedexoticsolutions,suchaswormholes—theoreticaltunnelsinspacetime—ortheconceptof"closedtimelikecurves,"buttheseideasremainhighlyspeculativeandwouldrequireformsofmatterandenergythatwehaveneverobserved.Evenifbackwardtimetravelwerepossible,itwouldraiseprofoundparadoxes.Themostfamousisthe"grandfatherparadox":ifyouwentbackintimeandpreventedyourgrandfatherfrommeetingyourgrandmother,howcouldyouexisttocommittheactinthefirstplace?Somephysicistssuggestthatthelawsofnaturemightsomehowpreventsuchparadoxesfromoccurring,butnoonehasbeenabletodemonstratehow.36.Whatdoesthepassagemainlydiscuss?A.Thehistoryoftimetravelinliterature.B.Thescientificpossibilityoftimetravel.C.TheroleofEinsteininmodernphysics.D.Theparadoxesofspaceexploration.答案B解析文章讨论了时间旅行在科学上是否可能，分别分析了前往未来和回到过去两种方向的理论基础。37.Accordingtothepassage,timedilationoccursbecause______.A.thespeedoflightchangesindifferentenvironmentsB.timeflowsatdifferentratesforobjectsmovingatdifferentspeedsC.gravityhasnoeffectonthepassageoftimeD.astronautsonthespacestationagefasterthanpeopleonEarth答案B解析第二段指出"timeflowsatdifferentratesdependingonhowfastanobjectismoving"，这正是时间膨胀的核心原理。38.WhichofthefollowingisTRUEaboutastronautsontheInternationalSpaceStation?A.TheyagefasterthanpeopleonEarth.B.Theyexperiencenotimedilation.C.TheyageslightlyslowerthanpeopleonEarth.D.TheyarenotaffectedbyEinstein'stheories.答案C解析第二段明确说宇航员"ageslightlyslowerthanpeopleonEarth"。39.Whatdoestheauthorsayabouttravelingtothepast?A.Itispossiblewithcurrenttechnology.B.Itistheoreticallypossiblebutpracticallydifficult.C.Itcontradictsourcurrentunderstandingofphysics.D.Ithasalreadybeenachievedbyscientists.答案C解析第四段说"travelingtothepast...presentsafargreaterchallenge"，现有物理定律不允许回到过去。40.The"grandfatherparadox"isusedtoillustrate______.A.thedifficultyofbuildingatimemachineB.thelogicalproblemsassociatedwithbackwardtimetravelC.therelationshipbetweengrandparentsandgrandchildrenD.theimportanceoffamilyhistoryinphysics答案B解析末段用"祖父悖论"来说明回到过去可能引发的逻辑矛盾。Passage3TheAmazonrainforest,oftencalledthe"lungsoftheEarth,"producesapproximately20percentoftheworld'soxygen.Itishometoanestimated400billionindividualtreesrepresentingover16,000species,andithousesatleastoneintenknownspeciesonEarth.Yetthisvitalecosystemisunderseverethreat.DeforestationintheAmazonhasreachedalarminglevels.AccordingtodatafromBrazil'sNationalInstituteforSpaceResearch,therateofforestlossintheBrazilianAmazonincreasedbynearly30percentbetween2018and2019,reachinga15-yearhigh.Theprimarydriversarecattleranching,soybeanfarming,andillegallogging.Asglobaldemandforbeefandsoyproductscontinuestorise,moreforestisclearedtomakeroomforagriculturaloperations.TheconsequencesofdeforestationextendfarbeyondtheAmazonitself.Therainforestplaysacrucialroleinregulatingtheglobalclimatebyabsorbingcarbondioxide.Whentreesarecutdownandburned,thatstoredcarbonisreleasedintotheatmosphere,acceleratingclimatechange.Additionally,thelossofhabitatthreatenscountlessplantandanimalspecies,manyofwhicharefoundnowhereelseonEarth.However,thereisreasonforhope.Conservationefforts,combinedwithsustainablefarmingpractices,aregainingmomentum.Internationalpressurehasledtopledgesfrommajorcorporationstoeliminatedeforestationfromtheirsupplychains.Indigenouscommunities,whohavebeenthemosteffectivestewardsoftheforest,arebeinggivengreaterlegalrecognitionoftheirlandrights.Satellitemonitoringtechnologynowallowsauthoritiestodetectillegallogginginnear-realtime.ThefutureoftheAmazon,andindeedthehealthofourplanet,dependsonthechoiceswemakeinthecomingyears.ItisnotmerelyaBrazilianissueoraSouthAmericanissue—itisaglobalonethatdemandscollectiveaction.41.WhyistheAmazonrainforestcalledthe"lungsoftheEarth"?A.Becauseitcontainsmanymedicinalplants.B.Becauseitproducesasignificantportionoftheworld'soxygen.C.Becauseitishometomillionsofanimalspecies.D.Becauseitregulatesthetemperatureoftheplanet.答案B解析首句即指出亚马逊雨林"producesapproximately20percentoftheworld'soxygen"，这是其被称为"地球之肺"的原因。42.WhatisthemaincauseofdeforestationintheAmazon?A.Urbanexpansionandroadconstruction.B.Agriculturalactivitiessuchascattleranchingandsoybeanfarming.C.Miningoperationsandoilextraction.D.Tourismandrecreationaldevelopment.答案B解析第二段明确指出"theprimarydriversarecattleranching,soybeanfarming,andillegallogging"，即农业活动和非法采伐。43.Howdoesdeforestationcontributetoclimatechange?A.Byreducingtheamountofrainfallintheregion.B.Byreleasingstoredcarbonintotheatmosphere.C.ByincreasingtheEarth'salbedoeffect.D.Byalteringoceancurrents.答案B解析第三段说明树木被砍伐和焚烧时，储存的碳被释放到大气中，加速气候变化。44.Whichgrouphasbeenthemosteffectiveinprotectingtheforest?A.Internationalenvironmentalorganizations.B.TheBraziliangovernment.C.Indigenouscommunities.D.Largeagriculturalcorporations.答案C解析第四段提到"Indigenouscommunities,whohavebeenthemosteffectivestewardsoftheforest"。45.Whatistheauthor'sattitudetowardthefutureoftheAmazon?A.Entirelypessimistic.B.Completelyoptimistic.C.Cautiouslyhopeful.D.Indifferent.答案C解析文章先指出问题的严重性，但第四段列举了多项积极进展，末段呼吁全球行动，态度属于"谨慎乐观"。PartB搭配题（第46-50题）阅读下面一段文章，其中A-G段中有一段是多余的。从第46-50题所给出的各段落中，为文章选择合适的段落，使其连贯完整。TheRiseofUrbanAgriculture46.______Inrecentyears,aquietrevolutionhasbeentakingplaceincitiesaroundtheworld.Rooftops,balconies,andvacantlotsarebeingtransformedintoproductivegreenspaces.Urbanagriculture—thepracticeofgrowingfoodwithincitylimits—hasmovedfromafringehobbytoamainstreammovement.47.______Oneofthemostsignificantdriversisfoodsecurity.Asglobalsupplychainsbecomeincreasinglyfragile,citiesarerealizingtheimportanceoflocalfoodproduction.Whenacrisislikeapandemicoranaturaldisasterdisruptstransportationnetworks,urbanfarmscanprovideacrucialbufferagainstshortages.48.______Beyondresilience,urbanfarmingoffersnumerousenvironmentalbenefits.Itreducesthe"foodmiles"associatedwithlong-distancetransportation,loweringcarbonemissions.Moreover,manyurbanfarmsemploysustainablepracticessuchascompostingandrainwaterharvesting,furtherreducingtheirecologicalfootprint.49.______However,urbanagriculturefacessubstantialchallenges.Landpricesincitiesarenotoriouslyhigh,makingitdifficultforsmall-scalefarmerstoacquirespace.Additionally,soilcontaminationisaseriousconcerninformerindustrialareas,requiringcarefultestingandremediationbeforeplantingcanbegin.50.______Despitetheseobstacles,themomentumbehindurbanagricultureshowsnosignsofslowing.CitiesfromDetroittoSingaporeareinvestinginverticalfarms,communitygardens,androoftopgreenhouses.Astechnologyimprovesandcostsdecrease,urbanfarmingispoisedtoplayanincreasinglyimportantroleinfeedingtheworld'sgrowingurbanpopulation.A.Theenvironmentaladvantagesofurbanfarmingextendbeyondemissionsreduction.Greenspacesincitiesalsohelpmitigatetheurbanheatislandeffect,improveairquality,andprovidehabitatsforpollinatorssuchasbeesandbutterflies.B.Themovement'sgrowthhasbeenfueledbyacombinationoffactors,rangingfromenvironmentalconcernstoeconomicnecessity.C.Thesebenefitshavenotgoneunnoticedbypolicymakers.Manycitieshaverevisedtheirzoninglawsandoffertaxincentivestoencourageurbanagriculture.D.Thistransformationreflectsabroadershiftinhowwethinkaboutfood,community,andtherelationshipbetweencitiesandthenaturalenvironment.E.Perhapsthemostcompellingargumentforurbanagriculture,though,isitssocialimpact.Communitygardensbringneighborstogether,provideeducationalopportunitiesforchildren,andoffertherapeuticbenefitstoparticipants.F.Localgovernmentsinmanydevelopingcountrieshavealsobeguntointegrateurbanfarmingintotheirpoverty-alleviationstrategies,recognizingitspotentialtoprovidebothnutritionandincomefordisadvantagedhouseholds.G.Thefinancialbarriers,combinedwiththetechnicalcomplexityofmanagingsoilqualityandwateraccess,meanthaturbanfarmingisnotalwaysassimpleasitappears.46.B47.A48.E49.G50.C解析本文论述城市农业的兴起。第46题引出主题后，需要一个承上启下的段落，B段点出该运动受多种因素推动，符合语境。第47题后文讨论粮食安全，A段进一步延伸环境益处，逻辑顺畅。第48题前文已讨论环境和粮食安全，E段引出社会影响，是合理的补充。第49题后文讨论土地价格和土壤污染等挑战，G段总括经济和技术障碍，与后文呼应。第50题后文描述城市的积极行动，C段提及政策支持，是最佳衔接。四、写作（共20