2025-2026年重庆市北师大版八年级英语第8单元课时作业

2025-2026年重庆市北师大版八年级英语第8单元课时作业一、单选题（总共10题，每题2分，共20分）1.根据第8单元课文内容，Whatisthemainpurposeofthepassage"ProtectingtheEnvironment"?A.Toadvertiseanewenvironmentalproduct.B.Todescribethebeautyofnature.C.Topersuadepeopletotakeactiontoprotecttheenvironment.D.Tointroducefamousenvironmentalscientists.解析：本题考查单元主题理解。正确答案为C，因为全文通过举例说明环境污染问题，并呼吁读者采取行动，如垃圾分类、节约用水等，符合单元核心内容。干扰项A、B、D均与文章主旨不符，A项错误，文章未涉及产品广告；B项错误，文章重点在问题而非自然美景；D项错误，未提及具体科学家。2.Intheunit8readingpassage,whydoestheauthormentiontheexampleofplasticpollutioninthecity?A.Becauseplasticisthemostexpensivematerialintheworld.B.Becauseitshowshowseriousthepollutionproblemis.C.Becauseplasticiseasytocarryfortourists.D.Becausethecitygovernmentusesplasticforbuildingroads.解析：正确答案为B。文章通过塑料污染的具体案例，如塑料袋、塑料瓶随意丢弃，说明人类活动对环境的破坏，以此强调环保的紧迫性。干扰项A错误，文章未比较材料价格；C项错误，塑料污染与旅游便利无关；D项错误，文章未提及塑料用于道路建设。3.AccordingtothedialogueinSectionB,whatdoesLilysuggesttoherfriendTom?A.Tobuyanewcarbecauseitismorecomfortable.B.Tousepublictransportationtoreducepollution.C.Tothrowawayalloldbooksbecausetheyareuseless.D.Toplantmoretreesinthecommunity.解析：正确答案为B。对话中Lily反对Tom购买新汽车，建议他选择公交车或自行车，理由是减少汽车尾气排放，符合环保主题。干扰项A与环保背道而驰；C项错误，文章未讨论书籍处理；D项虽是环保行为，但非Lily在对话中建议的内容。4.Whatisthebesttitleforthearticle"10SimpleWaystoSaveEnergy"?A.HowtoMakeMoneyFast.B.TheImportanceofRecycling.C.EverydayActionsforaGreenerPlanet.D.TheHistoryofEnergyUse.解析：正确答案为C。文章列举了10种日常节能方法，如关灯、使用节能电器等，旨在指导读者通过小行动保护地球，标题C最贴切。干扰项A、D与内容无关；B项片面，文章强调的是节能而非仅回收。5.Intheunit8grammarsection,whichsentencecorrectlyusesthepresentperfecttense?A.Shehaseatenbreakfastat7o'clock.B.Theywenttotheparkyesterday.C.Hewillfinishtheworktomorrow.D.WehavebeenlearningEnglishforthreeyears.解析：正确答案为D。选项A时态错误，7o'clock是具体时间，应用一般过去时；B项应用一般过去时；C项应用一般将来时；D项正确，表示从过去持续到现在的动作。6.Accordingtothepassage"ThePowerofSmallChanges,"whichofthefollowingisNOTarecommendedactiontoreducecarbonfootprint?A.Takingshortershowerstosavewater.B.Usingreusablebagsinsteadofplasticones.C.Drivingacareverydayforwork.D.Turningofflightswhenleavingaroom.解析：正确答案为C。文章强调减少碳排放，C项每天开车与环保目标相反，其他选项均为节能减碳措施。干扰项均符合环保行为。7.Intheunit8writingtask,whatshouldstudentsincludeintheirlettertoaschoolmagazineaboutenvironmentalprotection?A.Onlypersonalopinionswithoutanyfacts.B.Alistofallthesubjectstheylike.C.Specificsuggestionsforschoolactions,likestartingarecyclingprogram.D.Storiesaboutfamousenvironmentalists.解析：正确答案为C。写作任务要求提出具体建议，C项符合要求，如建议学校设立回收站、组织环保活动等。干扰项A缺乏依据；B偏离主题；D与个人建议无关。8.Whatdoesthephrase"sustainabledevelopment"meanaccordingtotheunit8vocabulary?A.Usingresourcesasquicklyaspossible.B.Balancingeconomicgrowthwithenvironmentalprotection.C.Buildingmorefactoriestocreatejobs.D.Reducingallindustrialactivitiestosaveenergy.解析：正确答案为B。词汇部分解释了可持续发展是经济发展与环境保护的平衡，如绿色能源、循环经济等。干扰项A、C、D均与定义不符。9.Intheunit8speakingactivity,whydoestheteacheraskstudentstorole-playaconversationbetweenatouristandalocal?A.TopracticeEnglishgrammaronly.B.Todiscussfamoustouristattractions.C.Toraiseawarenessaboutlocalcustoms.D.Tosimulatereal-lifeenvironmentalproblems.解析：正确答案为D。角色扮演旨在通过模拟游客与当地人的互动，讨论如垃圾分类、节约资源等环保问题，提升学生环保意识。干扰项均未涉及核心目的。10.Accordingtotheunit8readingpassage"TheGreatBarrierReef,"whatisthebiggestthreattothereef?A.Touristsswimminginthewater.B.Thegovernmentbuildingnewhotels.C.Climatechangeandoceanacidification.D.Overfishinginthearea.解析：正确答案为C。文章指出全球变暖导致海水酸化，威胁珊瑚生存，是最大威胁。干扰项虽是问题，但非首要因素，如A、D是次要影响。二、填空题（总共10题，每题2分，共20分）1.ThepassageinSectionAtalksabouttheimportanceof_______tokeepourplanethealthy.1分2.Intheunit8grammarlesson,welearnedhowtousethe_______tensetodescribecompletedactions.1分3.LilyandTom'sconversationinSectionBfocusesontheproblemof_______pollution.1分4.Thearticle"10SimpleWaystoSaveEnergy"suggeststurningofflightstoreduce_______.1分5.Sustainabledevelopmentmeansfindingabalancebetween_______andprotectingtheenvironment.1分6.Theunit8vocabularylistincludestheword"_______,"whichmeanscausingharmtonature.1分7.Inthewritingtask,studentsareaskedtowritealettertotheschool_______aboutenvironmentalissues.1分8.Thereadingpassage"TheGreatBarrierReef"warnsthatthereefmaydisappearif_______continues.1分9.Thespeakingactivityhelpsstudentspracticemakingrequestslike"Couldyouplease_______theplasticbottle?"1分10.Theunit8themeencouragesustotakesmallactions,suchas_______tosavewater.1分三、判断题（总共10题，每题2分，共20分）1.Thepassage"ProtectingtheEnvironment"onlygivesreasonswhypeopleshouldnotthrowtrashonthestreet.False.Thepassagealsosuggestssolutionslikerecyclingandusingpublictransportation.2.Inthedialogue,TomagreeswithLilythatdrivingacaristhebestwaytogotoschool.False.TominitiallypreferscarsbutlatersupportsLily'sideaofusingbikes.3.Thearticle"10SimpleWaystoSaveEnergy"mentionsthatsavingenergyistoodifficultforstudentstodo.False.Thearticleprovideseasyactionsliketurningoffcomputers.4.Theunit8grammarfocusesonlyonthepresentperfecttense.False.Italsoincludespastandfuturetensesincontext.5.Sustainabledevelopmentmeansusingasmuchnaturalresourcesaswewantwithoutlimits.False.Itemphasizesresponsibleusetomeetcurrentneedswithoutharmingfuturegenerations.6.Thereadingpassage"TheGreatBarrierReef"describeshowthereefwasformedmillionsofyearsago.False.Thepassagefocusesoncurrentthreatslikeclimatechange.7.Inthewritingtask,studentsshouldwriteabouttheirfavoritesubjectsinsteadofenvironmentalprotection.False.Thetaskrequiressuggestionsforschoolactions.8.ThespeakingactivityisjustforstudentswhoaregoodatEnglish.False.Ithelpsallstudentspracticereal-lifecommunication.9.Theunit8vocabularyincludeswordslike"pollution"and"conservation"tohelpstudentsunderstandenvironmentalissues.True.10.Takingshortershowersisnotawaytosaveenergy.False.Itreduceswaterusageandenergyforheatingwater.四、简答题（总共4题，每题4分，共16分）1.Explainwhyrecyclingisimportantforenvironmentalprotection.答：Recyclingreduceswasteinlandfills,savesnaturalresources,anddecreasespollution.Forexample,recyclingpaperreducestheneedtocuttrees,andrecyclingplasticreducesoilconsumption.Italsosavesenergycomparedtomakingproductsfromrawmaterials.解析：要点包括减少垃圾、节约资源、降低污染、节能，需结合具体例子说明。2.Describeoneproblemmentionedintheunit8readingpassagesandsuggestasolution.答：Problem:Plasticpollution.Manypeoplethrowplasticbagsandbottleseverywhere,harminganimalsandpollutingwater.Solution:Usereusablebagsandcontainers,andparticipateinclean-upcampaignstoremoveplasticfromnature.解析：需明确问题（如塑料污染）、危害，并提出具体可行的解决方案。3.HowcanstudentsapplythepresentperfecttenseintheirdailyEnglishcommunication?答：Studentscanuseittotalkaboutexperiences,like"IhavevisitedtheGreatWall."ortodescribechanges,suchas"Thecityhasbecomemorebeautiful."Itconnectspastactionstothepresent.解析：需解释时态用法（经历、变化），并举例说明在口语中的实际应用。4.Whatarethreekeythingstoincludeintheletterfortheschoolmagazineaboutenvironmentalprotection?答：1.Personalactions(e.g.,turningofflights).2.Schoolsuggestions(e.g.,recyclingprogram).3.Importanceofteamwork(e.g.,joiningeco-clubs).解析：需列出三点具体内容（个人行动、学校建议、团队合作），体现写作要点。五、应用题（总共4题，每题6分，共24分）1.Readthefollowingdialogueandanswerthequestions:Lily:HiTom,didyouseethenewsaboutthepollutedriver?Tom:Yes,it'sterrible.Whatcanwedo?Lily:Wecanstartaclean-updayatschool.Tom:Greatidea!Let'sasktheprincipaltoo.Lily:Okay,Iwillwriteanemail.(a)Whatproblemaretheydiscussing?(b)WhatsolutiondoesLilysuggest?(c)Whyisteamworkimportantinthissituation?答：(a)Thepollutedriver.(b)Startingaclean-updayatschool.(c)Teamworkhelpsmorepeopleparticipateandmakestheprojectsuccessfulfaster.解析：需准确概括问题、解决方案，并解释团队合作的意义。2.Writeashortparagraph(5-7sentences)usingatleastthreeunit8vocabularywords(e.g.,pollution,recycle,protect).答：Pollutionisaseriousprobleminourcity.Wemustprotectnaturebyrecyclingpaperandplastic.Ifwedon'tactnow,theenvironmentwillsuffer.Everysmallstephelpsreducepollution.Let'sworktogethertokeepourplanetclean.解析：需使用至少三个词汇，内容围绕环保主题，句子连贯。3.Imagineyouarewritingalettertoyourschoolmagazineaboutsavingenergy.Whatwouldyousuggest?答：DearEditor,Ithinkweshouldsaveenergybyturningofflightswhenleavingrooms.Also,theschoolcouldinstallsolarpanels.Studentsshouldusecomputerswiselytoreduceelectricityuse.Let'sbeeco-friendly!解析：需明确写给谁、主题，提出具体建议，语言简洁正式。4.Createaposter(describeitinwords)topromoteenvironmentalprotection.答：Title:"SaveOurPlanet!"-Image:AcleanEarthwithtreesandabluesky.-Text:"Recycle!Reduce!Reuse!"-Tips:Turnofflights,usereusablebags,planttrees.-Colorscheme:Greenandbluefornature.解析：需描述海报要素（标题、图片、文字、颜色），突出环保信息。【标准答案及解析】一、单选题1.C2.B3.B4.C5.D6.C7.C8.B9.D10.C解析：每题均需说明正确选项的原因及干扰项的排除逻辑。二、填空题1.environment2.presentperfect3.carbon4.energy5.economicgrowth6.destroy7.magazine8.climatechange9.putdown10.takingshortershowers解析：需结合单元词汇和语法知识，确保答案准确。三、判断题1.F2.F3.F4.F5.F6.F7.F8.F9.T10.F解析：需说明判断依据，如文章未提及的内容或错误说法。四、简答题1.答：Recyclingreduceswaste,savesresources,andcutspollution.Forexample,recyclingpapersavestrees,andrecyclingplasticreducesoiluse.Italsosavesenergycomparedtomakingproductsfromrawmaterials.解析：要点包括减少垃圾、节约资源、降低污染、节能，需结合具体例子说明。2.答：Problem:Plasticpollution.Manypeoplethrowplasticbagsandbottleseverywhere,harminganimalsandpollutingwater.Solution:Usereusablebagsandcontainers,andparticipateinclean-upcampaignstoremoveplasticfromnature.解析：需明确问题（如塑料污染）、危害，并提出具体可行的解决方案。3.答：Studentscanuseittotalkaboutexperiences,like"IhavevisitedtheGreatWall."ortodescribechanges,suchas"Thecityhasbecomemorebeautiful."Itconnectspastactionstothepresent.解析：需解释时态用法（经历、变化