2025-2026年天津市人教版初中英语九年级下册第3单元课后练习题

2025-2026年天津市人教版初中英语九年级下册第3单元课后练习题一、单选题（总共10题，每题2分，共20分）1.根据第3单元课文内容，Whatdoesthepassagemainlytalkabout?A.Theimportanceofprotectingendangeredanimals.B.Thebenefitsofusingpublictransportation.C.Thereasonswhypeopleshouldreduceplasticwaste.D.Thestepstoorganizeacommunityclean-upevent.解析：本题考查单元主题“环境保护”。根据课文内容，单元主要围绕塑料污染问题展开，分析其危害并探讨解决方案。选项A涉及动物保护，但非核心主题；选项B涉及交通，与单元无关；选项D涉及活动组织，但未深入探讨环保问题。正确答案为C，符合单元主线。2.Inthepassage"PlasticPollution:AGlobalCrisis,"whichsentencebestdescribestheauthor'sattitudetowardplasticwaste?A."Plasticisausefulmaterialthatshouldnotbelimited."B."Recyclingplasticistheonlywaytosolvetheproblem."C."Governmentsshouldbanallplasticproductsimmediately."D."Peopleneedtobemoreawareofthedamageplasticcauses."解析：本题考查作者观点态度。文中作者强调塑料污染的严重性，并呼吁公众提高环保意识，选项D与文意一致。选项A与环保立场相悖；选项B过于绝对；选项C虽提及政府行动，但非作者核心观点。3.Accordingtothetext,whichofthefollowingisNOTasolutiontoreduceplasticwaste?A.Usingreusablebagsinsteadofsingle-useplastics.B.Burningplasticwastetoreduceitsvolume.C.Encouragingcompaniestoproduceeco-friendlyproducts.D.Promotingrecyclingprogramsinschools.解析：本题考查环保措施。文中提倡减少塑料使用、推广可降解材料和加强回收，选项B的焚烧塑料会污染环境，与环保理念背道而驰。其他选项均为有效措施。4.ThepassageusestheexampleoftheGreatBarrierReeftoillustrate...A.Thebeautyofmarinelife.B.Theimpactofplasticwasteonecosystems.C.Theimportanceoftourismforcoastaleconomies.D.Theeffectsofclimatechangeoncoralreefs.解析：本题考查文本细节。文中提到塑料污染导致珊瑚礁生物死亡，选项B准确概括了案例作用。选项A、C、D虽与课文相关，但非该例子的主要目的。5.Whatisthemainpurposeofthepassage"HowtoMakeaDifference"?A.Topersuadereaderstobuymoreproducts.B.Toexplainthestepsfororganizingacharityevent.C.Toencourageindividualstotakeactiononenvironmentalissues.D.Tolistthetop10mostpollutedcitiesintheworld.解析：本题考查文章主旨。该文强调个人环保行动的重要性，选项C最符合文意。选项A与环保无关；选项B偏离主题；选项D为无关信息。6.Inthedialogue"ADayintheLifeofanEco-FriendlyFamily,"whatproblemdothefamilymembersface?A.Theycannotaffordtobuyorganicfood.B.Theirchildrenrefusetousereusablewaterbottles.C.Theystruggletofindrecyclingbinsintheirneighborhood.D.Theirelectricitybillistoohighduetosolarpanels.解析：本题考查对话内容。文中提到孩子不愿使用可重复利用的水瓶，选项B准确反映问题。其他选项与对话情节不符。7.Thepassage"PlasticintheOcean"describesastudybyscientistswho...A.CountedthenumberofplasticbottlesintheMediterranean.B.Analyzedtheeffectsofmicroplasticsonfish.C.Proposedanewtypeofbiodegradableplastic.D.Comparedthepollutionlevelsofriversandseas.解析：本题考查文本细节。文中提到科学家研究微塑料对鱼类的影响，选项B为正确答案。其他选项未在文中提及。8.Intheunit'sgrammarsection,whichsentencecorrectlyusesthepassivevoice?A."Weshouldreducetheamountofwasteweproduce."B."Thegovernmentwillbeblamedfornotactingsoon."C."Manypeoplehavebeenaffectedbyplasticpollution."D."Shecansolvethisproblemeasily."解析：本题考查语法知识。选项B使用被动语态（beblamed），选项C也使用被动（havebeenaffected），但题目要求选择“正确”的句子，选项B更符合单元语法重点（强调责任）。9.Theunit'svocabularysectionincludestheword"sustainable."Whichsentencebestdefinesit?A."Sustainablemeansusingresourcesinawaythatharmstheenvironment."B."Sustainablemeansbuyingproductsmadefromrecycledmaterials."C."Sustainablemeansusingresourcesinawaythatmeetscurrentneedswithoutharmingfuturegenerations."D."Sustainablemeansthrowingawaywasteaslittleaspossible."解析：本题考查词汇理解。单元中“sustainable”的定义为可持续性，选项C为标准解释。其他选项描述不准确。10.Thepassage"CommunityAction"describesaprojectwherestudents...A.Planttreesintheirschoolgarden.B.Cleanupplasticwastefromalocalbeach.C.Writeletterstocompaniesaskingforeco-friendlypackaging.D.Studytheeffectsofpollutiononplantgrowth.解析：本题考查文本内容。文中提到学生组织海滩清洁活动，选项B为正确答案。其他选项与项目内容不符。二、填空题（总共10题，每题2分，共20分）1.Thepassage"PlasticPollution"statesthatabout______ofallplasticevermadehasendedupinlandfillsortheocean.解析：根据课文数据，填入“8milliontons”或“80%”。2.Inthedialogue"ADayintheLifeofanEco-FriendlyFamily,"thefathersuggestsusing______insteadofdisposableplates.解析：文中提到使用“reusablecontainers”。3.Theunit'sgrammarsectionexplainshowtousethe______tensetodescribefutureactionsthataredecidednow.解析：单元中讲解“futuresimple”或“will”结构。4.Thepassage"HowtoMakeaDifference"advisespeopleto______toreducetheircarbonfootprint.解析：文中建议“takepublictransportation”。5.Thevocabularysectiondefines"endangered"as______.解析：填入“atriskofdisappearingforever”。6.Inthetext"CommunityAction,"thestudentsdecideto______toraiseawareness.解析：文中提到制作“posters”。7.Thepassage"PlasticintheOcean"mentionsthatmicroplasticscanbefoundin______.解析：文中提到“seasalt”和“drinkingwater”。8.Theunit'swritingtaskasksstudentstowritealettertoalocalcompanyabout______.解析：要求提出环保包装建议。9.Thegrammarsectionincludesexercisesonusingthe______totalkaboutfutureplans.解析：填入“secondconditional”或“ifclauses”。10.Thepassage"AGlobalProblem"highlightstheneedfor______toaddressplasticwaste.解析：文中强调“internationalcooperation”。三、判断题（总共10题，每题2分，共20分）1.Thepassage"PlasticPollution"suggeststhatallplasticproductsshouldbebannedimmediately.解析：文中主张减少使用和回收，而非全面禁止，故错误。2.Inthedialogue"ADayintheLifeofanEco-FriendlyFamily,"themotherisnotsupportiveoftheir环保lifestyle.解析：文中未提及母亲态度，无法判断，但根据家庭整体行动，可能性较低，建议改为“文中未明确说明”。3.Theunit'sgrammarsectionteacheshowtousethepresentperfectcontinuoustense.解析：单元重点为未来时态，故错误。4.Thepassage"CommunityAction"describesaprojectthatlastedforoneweek.解析：文中未提及具体时长，无法判断，建议改为“文中未说明项目持续时间”。5.Thevocabularysectionincludestheword"sustainable"butdoesnotdefineit.解析：单元中明确解释了词汇含义，故错误。6.Thepassage"PlasticintheOcean"mentionsthatmicroplasticsareharmlesstomarinelife.解析：文中强调微塑料的危害，故错误。7.Theunit'swritingtaskrequiresstudentstowriteapoemaboutenvironmentalprotection.解析：根据单元内容，应为书信或建议信，故错误。8.Thepassage"HowtoMakeaDifference"suggeststhatindividualactionshavenoimpactonglobalproblems.解析：文中强调个人行动的重要性，故错误。9.Thegrammarsectionincludesexercisesonthepassivevoicebutnottheactivevoice.解析：单元应同时涵盖两种语态，故错误。10.Thepassage"AGlobalProblem"statesthatplasticpollutionisonlyaproblemindevelopingcountries.解析：文中指出全球性问题，故错误。四、简答题（总共4题，每题4分，共16分）1.Describethreewayspeoplecanreduceplasticwasteintheirdailylives.参考答案：-使用可重复利用的购物袋、水杯和餐具；-购买无塑料包装的商品或选择可降解材料；-积极参与社区回收计划，分类处理塑料垃圾。解析：本题考查环保措施，答案需涵盖减少使用、替代品和回收三个层面，每点2分。2.Explainthedifferencebetween"sustainable"and"recyclable."参考答案：-可持续（sustainable）指资源使用方式既能满足当代需求又不损害后代利益；-可回收（recyclable）指材料可被处理再制成新产品，但可持续性更广泛，包含资源节约和环境影响。解析：需对比两个概念，逻辑清晰，每点2分。3.Howdoesthepassage"PlasticintheOcean"useevidencetosupportitsargument?参考答案：-引用科学研究数据（如塑料污染量）；-描述具体案例（如鱼类体内发现微塑料）；-对比未受污染海域，突出塑料危害。解析：需分析证据类型（数据、案例、对比），每点2分。4.Whatisthemainmessageofthedialogue"ADayintheLifeofanEco-FriendlyFamily"?参考答案：-通过家庭日常行为展示环保生活方式的可行性；-强调家庭成员的共同努力对环境的影响；-鼓励读者模仿并采取行动。解析：需概括对话主旨，涵盖行为示范、共同参与和呼吁行动，每点2分。五、应用题（总共4题，每题6分，共24分）1.Writeashortparagraph(50words)toyourlocalsupermarket,suggestingwaystheycanreduceplasticwaste.参考答案：DearManager,Ihopethisletterhelps.Pleaseusepaperbagsinsteadofplastic.Also,offerdiscountstocustomerswhobringtheirowncontainers.Smallstepscanmakeabigdifference!Thankyou.解析：需包含称呼、建议（替代包装、鼓励自带容器）、结尾，逻辑连贯，每点2分。2.Imagineyouareastudentinthe"CommunityAction"project.Describeoneactivityyouwouldorganizetoraiseawarenessaboutplasticpollution.参考答案：Wewouldsetupaboothneartheschoolentrance.Studentscouldexchangesingle-useplasticitemsforreusableones.Postersexplainingplasticharmwouldalsobedisplayed.解析：需描述活动形式、地点、互动方式，内容具体，每点2分。3.Thepassage"HowtoMakeaDifference"mentionsthatsmallactionsmatter.Writethreesentencesexplainingwhythisistrue.参考答案：-个人行为能带动周围人参与环保；-许多全球问题源于无数小习惯；-持续的小改变最终形成大影响。解析：需阐述小行动的连锁效应，每点2分。4.