2025届贵州省铜仁市德江一中高三下学期一模考试英语试题含解析

2025届贵州省铜仁市德江一中高三下学期一模考试英语试题注意事项1．考试结束后，请将本试卷和答题卡一并交回．2．答题前，请务必将自己的姓名、准考证号用0．5毫米黑色墨水的签字笔填写在试卷及答题卡的规定位置．3．请认真核对监考员在答题卡上所粘贴的条形码上的姓名、准考证号与本人是否相符．4．作答选择题，必须用2B铅笔将答题卡上对应选项的方框涂满、涂黑；如需改动，请用橡皮擦干净后，再选涂其他答案．作答非选择题，必须用05毫米黑色墨水的签字笔在答题卡上的指定位置作答，在其他位置作答一律无效．5．如需作图，须用2B铅笔绘、写清楚，线条、符号等须加黑、加粗．第一部分（共20小题，每小题1.5分，满分30分）1．Thefirstsnowdidn’tfalluntilFebruaryinourprovincethisyear,________wasunexpected.A．it B．which C．that D．what2．Thetrafficisheavythesedays.Iarriveabitlate,socouldyousavemeaplace?A．canB．mustC．needD．might3．You________havebookedtheticketsinadvance;therewereplentyleft.A．needn’t B．can’tC．shouldn’t D．mustn’t4．Sometimesproperanswersarenotfartoseek________foodsafetyproblems.A．in B．toC．on D．after5．Becauseoftheheavysnow,wehadtodelaythevisituntilthisweekendtotheartgallery____inthecenterofourcitythesedays.A．beingheld B．holding C．tobeheld D．held6．——Congratulationsonyourpromotion.Gooutfordinner,OK?——Good!__________,justyouandme.A．FollowmeB．MytreatC．MypleasureD．Allowme7．-Whodoyouthinkisabletofinishthejobintwodays?-It'shardtosay.Thiswouldappeartobe________fortherelativelyefficient.A．asacredcowB．aHerculeantaskC．aPandora'sboxD．achild'splay8．－Couldyoupossilbytaketotherailwaystationtomorrow?A．NowayB．NevermindC．NotatallD．Noproblem9．Thecompanyneedsto_____itsoutdatedimagetopromoteitsnewly-releasedproduct.A．layout B．callupC．shakeoff D．giveaway10．—Bettywasfeelingprettyblueforawhile,butshe’sbetternow.—_______.A．Oh,that’skindofyou B．CongratulationsC．Oh,I’mgladtohearthat D．It’smypleasure11．---May!Howisyourplan?IheardyoustarteditlastSunday.---Oh!Iforit,butIhaven’tdecidedwheretostartit.A．haveprepared B．hadprepared C．havebeenpreparing D．waspreparing12．—HowaboutgoingsightseeingthisSaturdayafternoon?Sorry,I_______myresearchreportthewholeweekend.A．willhavewritten B．willbewritingC．havewritten D．havebeenwriting13．Hedoesn'tspendanymoremoneyonclothingthanIdo,but________hemanagestolooksostylish.A．therefore B．somehowC．furthermore D．otherwise14．SomewarnedthatthesteptheUSgovernmenthastakentocopewiththecurrentcrisisis________muchrisk.A．oneof B．theoneof C．theone D．thatone15．____upearlyinthemorningtohaveawalk,Iamsure,youarelikelytofeelactiveallday．A．Get B．Havinggot C．Getting D．Toget16．Itwasinthatsmallhouse________wasbuiltwithstonesbyhisfather________hespenthischildhood.A．that;where B．which;thatC．which;which D．that;which17．---HasJohneverbrokenhispromise?---No.Forexample,hesaidhewouldshowmearoundhisschool,and.A．sowouldheB．sodidheC．sohewouldD．sohedid18．Iliveinatown______runsasmallandwindingriver.A．throughwhichB．whichC．inwhichD．where19．—Theterribleaccidentisunderinvestigation.—Actually,quickeraction_________thoseworkerstrappedinthemine.A．mighthavesaved B．musthavesaved C．shouldhavesaved D．couldhavesaved20．______caughtintherainunexpectedly,westillenjoyedthejourneyverymuch.A．When B．AsC．Unless D．Although第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21．（6分）TheArcticisnotasafeplacetobebyanystretchoftheimagination.Essentiallyavast,floatingblockofice,withonlyasmallareaofland,thelandscapecanbealmosttotallydifferentfromyeartoyear.Eventhemostexperiencedexplorersareluckytoreturnwithalltheirfingersandtoes,nottomentiontheirlives.IntothisextremeenvironmentsteppedNabilAlBusaidi.Infact,hedidn’tjuststep—hesteppedandskiedhiswayacross650km,pulling50kgofequipment.HealsocarriedtheflagoftheSultanateofOman,whichheheldintheairattheNorthPole,becomingthefirstArabtoachievethisimpressivefeat(壮举).OnthewaytotheNorthPole,Nabilwasdrivenbytherewardofsuccessandthepainatthethoughtoffailure.“Throughthe20-whateverdays,everyminutetherewasadifferentthingthatkeptmegoing,eitherthefearoffailure,thefearofdyingortherewardoffinishingandgettingsomewherewarm.”Theever-presentcold,averagingaround-40℃butdroppingaslowasarecorded-81℃,ishisoverriding(首要的)memoryoftheexperience.AsanOmani,Nabilhadanadditional20℃dropintemperaturetogetusedto,comparedtohisBritishteammates.Apartfromtheextremecold,polarbearswereacommonfeatureofthejourney,andNabilandtheteamhadtheirfairshareofbearencounters.“Polarbearsaredangerous,buttheyarenotthatthreateningbecausetheydon’tintendtoharmhumans.They’reusuallyeithercuriousorjustdon’tcare.Wesawfivebears,andnonewereaggressive,”saidNabil.OnefinalproblemNabilfacedwasthestressputonteamrelationsbytheseverityoftheconditions,especiallyduringthefirstthreestagesofthejourney.However,duringthefourthandfinalleg,theteamworkedsowelltogetherthattheytravelled130kminonlytwoandahalfdays.1、WhatdoesParagraph1show?A．Nabil’shard-wonsuccess. B．ThevalueofArcticexploration.C．Nabil’sgoodluck. D．ThechangeoftheArctic.2、WhichistheproblemNabilfacedonhisjourney?A．Graduallyrisingsealevel. B．Frequentpolarbearattacks.C．Constantlychangingclimate. D．Theheavypsychologicalburden.3、WhatcanweknowaboutNabil?A．HehadgoneonanArcticjourneybefore.B．HeexploredtheArcticwithprettylightpacks.C．HefinishedtheexplorationoftheArcticallalone.D．Hesufferedmorefromextremecoldthanhisteammates.4、Whatisthepassagemainlyabout?A．LifeintheArctic.B．ClimateoftheArctic.C．ThefirstArabtostepintotheArctic.D．AchievementsscientistsmadeintheArctic.22．（8分）ALifesavingAt-HomeCheckupMoreimportanceisattachedtophysicalfitnessnowadays.However,stayingfitcanbeexpensivewhengoingtoprofessionalagenciesformedicalcheckups.Hereweshowyouthreewaystodomedicalcheckupathome,trythemforaroughideaaboutyourhealthcondition.1BalanceOnOneLegHoldforupto60seconds.Ifyoufalldownearly,youmaybeathigherriskforbraindecline.InaJapanesestudy,30percentofolderadultswhocouldbalanceforonly20secondsorfewerhadmicrobleedsinthebrain,anearlysignofriskforstrokeordementia(痴呆).Thesemicrobleedscanaffectbalance,memory,anddecisionmaking.2TouchYourToesSitwithyourbackstraight,thenleanforwardandtrytotouchyourtoes.Notevenclose?Youmightbeatriskforheartproblems.Byusingthistest,UniversityofNorthTexasresearchersfoundthatsomeoldinflexiblefolkshavetohavetheheartworkhardertoprovideenoughblood,raisingtheriskofheartattackorstroke.3SittingToStandingTimehowlongittakestoliftandloweryourselffromachairtentimesasfastasyoucan.Senioradultswhodidtenrepetitionsin21secondsorfewerwerelesslikelytodieoverthenext13yearsthanthosewhotooklonger.Thetestrequiresmusclestrength,balance,andheartfitness;beingslowcouldmeanunderlyingdiseasebeforesymptomsarise.Theabovearehometestseveryonecoulddotokeepyoufitandtheydon’trequiremuchtimeormoney.Learnwhatpossibledangersarehidinginsideyouandhowtodealwiththem.1、Whatmaygowrongifyoubalanceononelegforonly20secondsorfewer?A．Heart.B．Brain.C．Leg.D．Muscle.2、Aperson’smusclestrengthcanbetestedby____.A．sittingwiththebackstraightB．balancingononelegC．touchingthetoesD．sittingtostanding3、Thethreewaystodomedicalcheckupmentionedinthepassageare____.A．money-savingB．long-lastingC．energy-demandingD．resources-wasting23．（8分）Iamastrongbelieverthatifachildisraisedwithapproval,hewilllearntolovehimselfandwillbesuccessfulinhisownway.Severalweeksago,Iwasdoinghomeworkwithmysoninthethirdgradeandhekeptstandingupfromhischairtogooverthemathlines.Ikeptaskinghimtositdown,tellinghimthatheshouldconcentratebetter.Hesatbutsecondslater,asifhedidn’tevennoticehewasdoingit,hegotupagain.Iwasgettingfrustrated,butthenithitme.Istartednoticinghisanswersweremuchquickerandaccuratewhenhestoodup.Couldhebemoreintentwhilestandingup?ThismademestartquestioningmyselfandwhatIhadbeenraisedtobelieve.Iwasraisedtobelievethataquiet,calmchildwasasurewaytosuccess.Thischildwouldhavethedisciplinetostudyhard,getgoodgradesandbecomesomeoneimportantinlife.NowthosesamepeopleperhapscometorealizethattheirkidsarebornwiththeirownsetsofDNAandpersonalitytraits,andallyoucandoislovingandacceptingthem.Asparents,throughouttheirgrowingyearsandbeyondthat,weneedtobeourkids’bestcheerleaders,guidingthemandhelpingthemfindtheirway.Ihavestoppedaskingmysontositdownandconcentrate.Obviously,heisconcentratingjustinhisownwayandnotmine.Weneedtolearntoacceptourkids’waysofdoingthings.Somewaymayhaveworkedformebutdoesn’tmeanweneedtocarryitthroughgenerations.Thereisnothingsweeterthanbeingindividualandunique.Itmakesusfreeandhappyandthat’sjustthewayIwantmykidstolivetheirownlife.1、Atthebeginning,theauthortriedtokeephissonseatedinordertomakehim________.A．finishhishomeworkontimeB．keepsilentintheroomC．paymoreattentiontohisstudyD．getrightanswers2、Inspiredbythecaseofhisson,theauthorbegantodoubt________.A．theoldformofeducationB．theimportanceofparentsC．therelationshipbetweenkidsandtheirparentsD．thegoodgradesofsomekids3、Accordingtothepassage,whichofthefollowingstatementsisRIGHT?A．Weshouldhelpkidscorrecttheirwrongways.B．Parentsshouldloveandaccepttheirkids.C．Parentsshouldstudytheirkids’DNA．D．Kidsshouldbetaughttobehavethemselves.4、Whichofthefollowingwouldbethebesttitleofthepassage?A．StudyHardandYou’llBeSuccessfulB．BeFriendlytoYourChildrenC．Parents’HelpwithTheirChildren’sStudyD．Children’sSuccessinTheirOwnStyle24．（8分）Sometimes,youjustcan'thelpit.Maybeyou'rewatchingasadmovie,orthinkingaboutthefriendwhomovedaway.Nextthingyouknow,youfeelpressureinyourthroat,youreyesarewatering,andyouhavetearsrunningdownyourcheeks.AccordingtoAdVingerhoets,aprofessorofpsychologyatTilburgUniversity,intheNetherlands,whoisoneofthefewscientistsintheworldwhohavestudiedcrying,therearethreetypesoftears.Basaltearsarethefirsttype.TheyactasaprotectivebarrierbetweentheeyeandtherestoftheWorld.Nextarereflextears.Theywashyoureyescleanwhensomethinggetsinthem.Finally,thereareemotionaltears.“Thesearereleasedinresponsetoemotionalstates,”explainsVingerhoets.Scientistsbelievecryinghassomethingtodowithhowhumansdevelopedandlearnedtodependoneachother.“Humansareverycomplexsocialcreatures,”saysLaurenBylsma,aprofessorattheUniversityofPittsburgh,inPennsylvania."Itseemsthattearsservetoarousehelpandsupportfromothers,”Shesays.Vingerhoetsagrees,"Ithinkthatthereasonwhyhumansshedtears（流眼泪）hassomethingtodowithourchildhood,"hesays."that'sthetimewhenwearestilldependentonadultsforloveandprotectionandcare.Themajoradvantageofemotionaltearsisthatyoucantargetthemataspecificperson."Vingerhoetssaysthisabilitycouldhavecomeinhandyinprehistorictimes,whenhumanswerelivingamongdangerousanimals.Tearswereasaferwaytogetattention."Inthiscase,itisbettertouseasilentsignaltoaskforhelp,"hesays.VingerhoetsandByhmadofrequentstudiestobetterunderstandwhyhumanscry.AccordingtoByhma,thereisstillmuchmoretodiscover."It'ssurprising,"shesays,"howmuchwestilldon'tknow.”1、Inthescientists'opinion,cryingis________.A．asignofhumanevolutionB．aresultofhumankindnessC．acauseofpersonalgrowthD．ameansofrelyingoneachother2、Theunderlinedphrase"thisability"inthelastparagraphreferstotheabilityto________.A．seekhelpwiselyB．aimtearsatsomeoneC．cryemotionallyD．appealtootherpeople3、Fromthetext,welearnthatAdVingerhoetsandLaurenBylsma________.A．holddifferentopinionsaboutthecausesoftearsB．thinkpositivelyoftheeffectsoftearsC．areworkingtogethertostudytearsD．havelearnedenoughabouttears4、Whatcanbeasuitabletitleforthetext?A．ThetypesoftearsB．ThecomponentsoftearsC．ThescienceoftearsD．Theopinionsabouttears25．（10分）Inaworldwithlimitedland,waterandothernaturalresources,theharmfromthetraditionalbusinessmodelisontherise.Actually,thepastdecadeshasseenmoreandmoreforestsdisappearingandglobebecomingincreasinglywarm.Peoplenowrealizethatthisunhealthysituationmustbechanged,andthatwemustbeabletodevelopinsustainable（可持续的）ways.Thatmeansgrowthwithlowcarbonordevelopmentofsustainableproducts.Inotherwords,weshouldkeeptheearthhealthywhileusingitssupplyofnaturalresources.Today,sustainabledevelopmentisapropertrendinmanycountries.Accordingtoarecentstudy,theglobalmarketforlow-carbonenergywillbecomethreetimesbiggeroverthenextdecades.China,forexample,hassetitsmindonleadingthatmarket,hopingtoseizechancesinthenewroundoftheglobalenergyrevolution.Itisnowtryinghardtomakefulluseofwindandsolarenergy,andisspendingahugeamountofmoneymakingelectriccarsandhigh-speedtrains.Inaddition,wearealsoseeinggreatgrowthintheglobalmarketsforsustainableproductssuchaspalmoil（棕榈油）,whichisproducedwithoutcuttingdownvaluablerainforest.Inrecentyearsthemarketsforsustainableproductshavegrownbymorethan50%.Governmentscanfullydevelopthepotentialofthesenewmarkets.First,theycansethightargetsforreducingcarbonemissions（排放）andtargetsforsavingandreusingenergy.Besides,strongerarrangementofpublicresourceslikeforestscanalsohelptospeedupthedevelopment.Finally,governmentscanavoidthehugeexpensesthataretakingusinthewrongdirection,andredirectingsomeofthoseexpensescanacceleratethechangefromtraditionalmodeltoasustainableone.Themajorchallengeofthiscenturyistofindwaystomeettheneedsofgrowingpopulationwithinthelimitsifthissingleplanet.Thatisnosmalltask,butitoffersabundantnewchancesforsustainableproductindustries.1、ThetraditionalbusinessmodelisharmfulbecauseofallthefollowingEXCEPTthat_________________A．ItmakestheworldwarmerB．itconsumesnaturalresourcesC．itbringsseveredamagetoforestsD．itmakesgrowthhardtocontinue2、WhatcanweinferfromParagraph2?A．Chinalackswindandsolarenergy.B．Chinaistheleaderofthelow-carbonmarket.C．High-speedtrainsarealow-carbondevelopment.D．Palmoilismadeatthecostofvaluableforests.3、Tofulldevelopthelow-carbonmarkets,governmentcan_________________.A．cutpublicexpensesB．forbidcarbonemissionC．developpublicresourcesD．encourageenergyconservation4、Wecanlearnfromthelastparagraphthatbusinesseshavemanychancesto_________________.A．developsustainableproductsB．explorenewnaturalresourcesC．makefulluseofnaturalresourcesD．dealwiththemajorchallenge5、Whatisthemainpurposeofthepassage?A．Tointroduceanewbusinessmodel.B．Tocomparetwobusinessmodels.C．Topredictachangeoftheglobalmarket.D．Toadvocatesustainabledevelopment.第三部分语言知识运用（共两节）第一节（每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项．26．（30分）阅读下面短文，从短文后各题所给的四个选项(A．B．C和D)中，选出可以填入的空白处的最佳选项，并在答题卡上将该选项涂黑。Ithappenseveryday，everywhereIgo．Atthesupermarketandthepostoffice，peoplekeeptellingmetoenjoymykidswhiletheyare________Ispendmydaystakingcareofthemandanswering________questionsabouteverythingfromwhywehavetwoeyesbutonenoseto1therearetoiletsintheheaven．They2mefromeatingafullmealorgettingafull3sleep．Yet，theotherday，whenItookmykidstoachildren’smuseum，Ibeganto4whatpeopleweretryingtotellme．Itwasthe5timewehadgonetherewithoutdiaper(纸尿片)bag，babybottleorstroller(小推车)．As1watchedmysonspaintthere，Iwassuddenly6byawaveof7Mybabiesweren’tbabiesanymore．NowI’mpayingmoreattentiontothe________thatwon’thappenwhenmykidsare________I'menjoyingtheminutewhenChristlookeduptheskyandcried8“Wow!Themoon!”Inafew9，itwilltakearareShrekcardorsomethingelsetogethimthatexcited．I’m10themomentwhenNicholasputdownhisforkatdinnerandasked，“Mommy，howareyoudoing?’’Abouttenyearsfromnow，he11notcareaboutme．Whenthey’reinprimaryschool，theywon’twanttoholdmy________anymore．Injuniorhighschool，theywon’thugmeandsay，“Iloveyou，too．”Inhighschool，theywon’tevenwanttobe12togetherwithme．Pre13they’11bothbegone．AndI’11________throughthesupermarketandthepostofficealone，warningyoung14toenjoytheirkidswhiletheyarelittle．Hopethey’11listen．1、A．well B．humorous C．funny D．1ittle2、A．endless B．boring C．strange D．special3、A．how B．whether C．why D．when4、A．make B．turn C．take D．keep5、A．day’s B．time’s C．night’s D．bed’s6、A．realize B．admit C．remind D．admire7、A．very B．real C．first D．best8、A．hit B．thrown C．stuck D．moved9、A．happiness B．sadness C．1uck D．failure10、A．accident B．event C．scene D．moment11、A．younger B．older C．worse D．better12、A．excitedly B．disappointedly C．1ovely D．shyly13、A．days B．weeks C．months D．years14、A．measuring B．pleasing C．treasuring D．surprising15、A．might B．should C．must D．need16、A．hair B．hands C．bag D．basket17、A．seen B．talked C．carried D．treated18、A．quickly B．slowly C．soon D．more19、A．come B．go C．wander D．pass20、A．fathers B．mothers C．people D．1adies第二节（每小题1.5分，满分15分）阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。27．（15分）ManyhighschoolstudentsintheUnitedStatesgettraininginconstructionskillsbybuildingrealhouses.Theproject1．(run)bytheWaterlooCareerCenter.Thecenteroffersstudentsdifferentprogramsdesigned2．(prepare)themforcareersintechnicalfields.StudentsfromtheWaterlooCommunitySchoolDistrict3．(recent)tookpartinconstructiontrainingthatcenteredontheskillofmasonry(砖石建筑)—workdonewithstone,brickorconcretematerials.Thestudentsspentfivedaysattheirschoollearning4．experiencedworkersfromtheMasonryInstituteofIowa,a5．(profession)organization.Theworkerstaughtthestudents6．tomixmortar(砂浆)andbuildwallswithbricksandblocks.Thestudentsmovedthemortaronto7．(piece)ofwoodandthenaddedbricksandblockstoformwalls.ChrisBuschhelpedoverseethestudents’efforts.Asthestudentsworked,Busch8．(offer)themanimportantpieceofadvice.Hetoldthestudentstobesuretousealevelingtooltocheckthatthewallstandsstraightandlevel.WestHighstudentNathanElliotttoldtheWaterloo-CedarFallsCouriernewspaperthatthiskindoflearningwasmuchbetter9．sittingatacomputer.Otherstudentsalsosaiditgotthem10．(excite)aboutfuturecareersinconstruction.第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。删除：把多余的词用斜线（\）划掉。修改：在错的词下画一横线，并在该词下面写出修改后的词。注意：1、每处错误及其修改均仅限一词；2、只允许修改10处，多者（从第11处起）不计分。Hello,everyone、Welcometoourschool、NowI’dliketointroduceourschooltoyou、Ourschoolislocatedinthenorthpartofthecity、It’sfamousasitsbeautifulscenery、Thereliealakeinourschool,thatstudentscanboat、Closetoourschoolisabeautifulparkwithfloweraround、Everyclassismadeup50livelystudents、Theyarewarm,generousbutreadytoofferhelp、Theyfeelhonouredwhenaskforhelp、Sotheyareveryfriendlyandeasytogetalongwiththem、Youwillhavethewonderfultimeandgetusedtothelifesoon、第二节书面表达（满分25分）29．（25分）假如你是李华，你的美国笔友Thomas对中国的共享单车(bicyclesharing)很感兴趣，写信向你了解情况，请用英文写一封100词左右的回信，内容须包括以下三个方面:1.共享单车蓬勃发展，成为社会热点;2.共享单车带来多便利，但也存在一些问题;3.自己对解决问题的建议。_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、B2、D3、A4、B5、A6、B7、B8、D9、C10、C11、C12、B13、B14、A15、C16、B17、D18、A19、D20、D第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21、ThreeyearsagoJennySalgado,aDominicanshopassistant,movedtoHighlandtown,aneighborhoodofBaltimore.WhenshearrivedtheshopsheworksinwasoneofonlyafewSpanishbusinesses.Nowtherearemanymore.“It’sgoodnowifyouspeakSpanish,”shesmiles.Baltimorehasbeenlosingpeoplefor60years.Toaddressthis,itsformermayor,StephanieRawlings-Blake,wantedtomakeitthemostimmigrant-friendlycityintheworld.ItslibrariesprovideSpanish-languageexerciseclasses.Tohelpthosewithnopapers,thecityisintroducingmicro-loans(小额贷款）whichrequirenocreditchecks.Citypolicewouldnolongerroutinelychecktheimmigrationstatusofcitizensorenforceanyfederalimmigrationlawunlessrequiredto.Thethengovernor,MartinO'Malleymadeitpossibleforillegalimmigrantstogetdrivinglicenses.Suchwelcomingpoliciesarespreading.SuchcitiesasCleveland,DaytonandPhiladelphiaalleagerlytrytopleaseimmigrants.RickSnyder,GovernorofMichigan,hasaskedthefederalgovernmenttooffer50,000visastopeoplewhoagreetoliveinDetroit.Hisadministrationhasmadeiteasierforskilledmigrantstogetprofessionallicenses.Whenacity’spopulationfalls,bothtaxreceiptsandservicesfall.Half-desertedneighborhoodsbreed(滋生）crime,drivingyetmorepeopletoleave.Nocityhasescapedthiswithoutattractingnewresidents,saysSteveTobocmanofGlobalDetroit.Severalstudiessuggestthatwhenimmigrantsarrive,crimegoesdown,schoolsimproveandshopsopenup.InDetroit,immigrantslivingnearthetinyseparatecityofHamtramckhaveformedlocalwatchestoguardagainstthieves.Theirneighborhoodsarenotjustsafer;theyarealsoamongtheonlyplaceswhereitisaseasytobuyfreshvegetablesasdrugsandalcohol.Butattractingnewimmigrantstothecitieswhichmostneedthemishard