2025年北师大版高中英语必修第三册第4单元课后练习

2025年北师大版高中英语必修第三册第4单元课后练习一、单项选择题（总共10题，每题2分，共20分）1.AccordingtothepassageinUnit4,whatisthemainpurposeofthearticle"TheImpactofSocialMediaonTeenagers"?Theauthorprimarilyaimsto______.A.criticizetheexcessiveuseofsocialmediabyteenagers.B.provideabalancedanalysisofhowsocialmediaaffectsteenagers'mentalhealth.C.promotetheideathatsocialmediaisbeneficialforteenagers'socialdevelopment.D.suggestspecificmeasurestoreducethenegativeeffectsofsocialmediaonteenagers.解析：本题考查文章主旨大意。根据单元4文章《社交媒体对青少年的影响》的核心内容，作者通过数据对比和案例研究，客观分析了社交媒体对青少年心理健康的多方面影响，包括积极和消极两方面。选项A过于片面，选项C忽略负面影响，选项D偏离文章重点，只有选项B准确概括了作者意图。2.InthegrammarsectionofUnit4,thesentence"Althoughtheweatherwasterrible,theydecidedtogohiking"demonstratestheuseof______.A.presentperfecttense.B.pastcontinuoustense.C.asubordinateclausewith"although"toexpresscontrast.D.passivevoice.解析：本题考查语法知识。该句中"Althoughtheweatherwasterrible"是让步状语从句，用"although"引导，表示转折关系，符合单元4语法重点。选项A（现在完成时）和选项B（过去进行时）在句中未体现，选项D（被动语态）与句子结构无关，故选C。3.Thevocabularyword"ubiquitous"inthereadingpassageofUnit4mostcloselymeans______.A.rare.B.expensive.C.widespread.D.difficulttounderstand.解析：本题考查词汇理解。根据单元4阅读文章中"socialmediaisnowubiquitousinteenagers'dailylives"的语境，"ubiquitous"意为"无处不在的"，与"广泛存在的"最接近。选项A（罕见的）、选项B（昂贵的）、选项D（难以理解的）均与词义无关，故选C。4.ThewritingtaskinUnit4asksstudentstowritealettertoalocalnewspaperabouttheimportanceofprotectingtheenvironment.Whichofthefollowingisthemostappropriateopeningsentence?A."Ithinkitisimportanttorecyclepaper."B."DearEditor,Iamwritingtoexpressmyconcernaboutpollution."C."Manypeopledonotrealizehowserioustheproblemis."D."Lastweek,Isawalotoflitterinthepark."解析：本题考查写作能力。书信写作需明确目的和对象，选项B直接点明写信对象（编辑）和主题（环境污染），符合正式信函格式。选项A和C过于笼统，选项D仅描述个人观察，未体现写信目的，故选B。5.ThespeakingactivityinUnit4requiresstudentstodebatewhethersmartphonesshouldbeallowedinschools.Whichargumentsupportsthe"against"side?A."Smartphonescanhelpstudentsresearchtopicsforprojects."B."Studentscanusethemtocontactparentsinemergencies."C."Allowingsmartphonesmayleadtodistractionsandreducedlearningtime."D."Smartphonesareessentialformoderneducation."解析：本题考查口语表达。辩论题需对立观点，选项C是反对手机的典型论点，强调其可能导致分心，符合单元4口语活动主题。选项A和D支持手机使用，选项B强调应急功能，与反对立场无关，故选C。6.Theunit4readingpassageincludesachartshowingthepercentageofteenagersusingsocialmediadaily.Ifthechartshows85%of16-year-oldsusesocialmediadaily,whatconclusioncanbedrawn?A.Socialmediaismorepopularamongolderteenagers.B.Socialmediausageisdecliningeveryyear.C.Teenagersshouldbeencouragedtousesocialmediamore.D.Thedataisirrelevantbecauseitonlyincludesoneagegroup.解析：本题考查数据解读。图表显示16岁青少年使用率最高，可推断选项A正确。选项B（逐年下降）和选项C（鼓励使用）无数据支持，选项D（数据无关）与图表信息矛盾，故选A。7.Theunit4grammarexerciseasksstudentstocorrectthesentence"Shedon'tlikereadingbooks."Thecorrectformis______.A."Shedoesn'tlikereadingbooks."B."Shedon'tlikereadingbooks."C."Shelikesnotreadingbooks."D."Sheisnotlikingreadingbooks."解析：本题考查语法纠错。主语"she"是第三人称单数，动词需加"s"，选项A符合规则。选项B错误，选项C和D结构不正确，故选A。8.Theunit4writingpromptasksstudentstodescribetheirfavoriteholiday.Whichsentenceusesvividlanguageeffectively?A."MyfavoriteholidayisChristmasbecauseitisfun."B."Christmasismyfavoriteholidaybecausethelightsarecolorful."C."IenjoyChristmasbecauseitisatimeforfamily."D."Christmasisgreatbecausepeopleexchangegifts."解析：本题考查写作技巧。选项B通过"colorfullights"的描写增强画面感，符合单元4写作要求。选项A、C、D过于平淡，缺乏细节，故选B。9.Theunit4listeningactivityincludesaconversationaboutenvironmentalproblems.Ifthespeakersays,"Ifwedon'treduceplasticuse,theoceanwillbefilledwithtrash,"whattypeofargumentisthis?A.Emotionalappeal.B.Logicalcause-and-effect.C.Statisticalevidence.D.Personalexperience.解析：本题考查听力理解。句子通过"if...then..."结构说明因果关系，属于逻辑论证，故选B。选项A（情感诉求）、选项C（数据支持）、选项D（个人经历）均未体现。10.Theunit4vocabularysectionincludestheword"sustainable."Whichsentencecorrectlyusestheword?A."Thecompanyistryingtobesustainablebywastingpaper."B."Usingsolarenergyisnotasustainablesolution."C."Thesustainabledevelopmentgoalaimstoprotecttheplanet."D."Sustainablemeanseatingonlyvegetables."解析：本题考查词汇运用。"sustainable"意为"可持续的"，选项C描述可持续发展目标，符合词义。选项A与"sustainable"矛盾，选项B否定其有效性，选项D过度简化，故选C。二、填空题（总共10题，每题2分，共20分）1.ThepassageinUnit4mentionsthat"manyteenagersfeel______abouttheirappearanceonsocialmedia."答案stressed解析：根据单元4阅读文章，青少年因社交媒体上的外貌评价产生压力，"stressed"（焦虑的）符合语境。2.Inthegrammarexercise,thesentence"Shewill______totheconcertifshehasenoughmoney"shouldbecompletedwith______.答案go解析：单元4语法重点包含将来时态，"will+动词原形"结构，"gototheconcert"（去音乐会）符合句意。3.Theunit4speakingactivityrequiresstudentstodiscuss"thebenefitsofextracurricularactivities."Onepossiblebenefitisthattheycan______.答案developteamworkskills解析：单元4口语活动强调课外活动的价值，"developteamworkskills"（培养团队协作能力）是常见论点。4.ThereadingpassageinUnit4includesaquotefromapsychologist:"Socialmediacancreatea______ofunrealisticexpectations."答案bubble解析：文章分析社交媒体对心理的影响，"bubble"（虚假环境）与"unrealisticexpectations"（不切实际的期望）搭配合理。5.Thewritingtaskasksstudentstowriteaspeechabout"theimportanceofreading."Agoodopeninglinecouldbe:"Ladiesandgentlemen,______."答案Today,Iwanttotalkaboutthepowerofreading解析：演讲稿需吸引听众，该句明确主题并引起兴趣，符合单元4写作要求。6.Theunit4vocabularylistincludestheword"melancholy."Ifastudentdescribesarainydayas______,theyareusingthewordcorrectly.答案gloomy解析："melancholy"意为忧郁的，"gloomy"（阴沉的）与之近义，符合语境。7.Thegrammarsectionexplainsthat"IfI______you,Iwouldstudyharderfortheexam."Thecorrectmodalverbis______.答案were解析：虚拟语气中，与现在事实相反的条件句需用"were"，单元4语法重点包含此结构。8.ThelisteningactivityinUnit4includesadiscussionabout"globalwarming."Onespeakersays,"Ifwedon'tactnow,theplanetwillfacea______future."答案catastrophic解析：文章强调气候变化的严重性，"catastrophic"（灾难性的）符合警示语气。9.Theunit4writingpromptasksstudentstodescribetheirhometown.Agoodsentencecouldbe:"Thestreetsarealways______withpeopleandshops."答案crowded解析：描述城市生活常用"crowded"（拥挤的），符合单元4写作场景。10.Thereadingpassagementionsthat"manyteenagersareaddictedto______."Apossibleansweris______.答案smartphones解析：文章分析青少年沉迷问题，"smartphones"（智能手机）是常见主题。三、判断题（总共10题，每题2分，共20分）1.Theunit4grammarexercisestatesthat"Youcanuse'too'or'either'toshowagreement."Thisstatementistrue.答案正确解析：单元4语法包含"too/also"和"either"的用法，如"Metoo"（我也是），符合规则。2.ThereadingpassageinUnit4claimsthat"allsocialmediaplatformsareharmfultoteenagers."Thisstatementisfalsebecausethearticleprovidesabalancedview.答案错误解析：文章分析利弊，未绝对否定社交媒体，故判断错误。3.Theunit4vocabularylistdefines"ubiquitous"as"rare."Thisdefinitionisincorrect.答案正确解析："ubiquitous"意为"无处不在的"，与"rare"（罕见的）相反，故判断正确。4.Thewritingtaskasksstudentstowriteapoem,butitdoesnotrequirerhymingwords.答案正确解析：单元4写作任务为信件或演讲，非诗歌，故判断正确。5.Thelisteningactivityincludesaninterviewabout"environmentalprotection."Thespeakersprovidestatisticstosupporttheirpoints.答案正确解析：听力材料常包含数据论证，符合单元4活动设计。6.Theunit4grammarsectionexplainsthat"youmustuse'can'toexpressability."Thisstatementisfalsebecause"may"or"might"canalsobeused.答案错误解析：表达能力可用"can/may/might"，故判断错误。7.ThereadingpassageinUnit4mentionsthat"teenagersshouldnotusesmartphonesatall."Thisstatementisanopinion,notafact.答案正确解析：文章分析问题，未强制禁止，故判断正确。8.Theunit4speakingactivityrequiresstudentstodebate"whetherhomeworkishelpful."Bothsidesmustbepreparedtoargue.答案正确解析：辩论需对立观点，单元4活动设计包含此要求。9.Thevocabularyword"sustainable"means"short-term."Thisdefinitionisincorrect.答案正确解析："sustainable"意为"可持续的"，与"short-term"（短期的）矛盾，故判断正确。10.Thewritingtaskasksstudentstowriteaformalletter,buttheycanuseinformallanguage.答案错误解析：正式信函需用规范语言，故判断错误。四、简答题（总共8题，每题2分，共16分）1.AccordingtothepassageinUnit4,whatarethreewayssocialmediaaffectsteenagers'mentalhealth?参考答案-Increasedanxietyduetosocialcomparison.-Lowerself-esteemfromonlinecriticism.-Addictionleadingtoreducedface-to-faceinteractions.解析：文章分析社交媒体对心理的三方面影响，需结合具体内容作答。2.Explainthedifferencebetween"too"and"either"inthegrammarsectionofUnit4.参考答案-"Too"isusedforadditionalinformation(e.g.,"Ilikecoffee,andIdrinkiteverydaytoo").-"Either"isusedforagreement(e.g.,"Ilikecoffee,andsodoI").解析：单元4语法对比两者用法，需说明适用场景。3.Describeonebenefitofparticipatinginextracurricularactivities,asdiscussedinthespeakingactivityofUnit4.参考答案-Extracurricularactivitieshelpdevelopleadershipskills.解析：活动主题常包含领导力培养，需结合单元内容。4.WhyisitimportanttousevividlanguageinthewritingtaskofUnit4?参考答案-Vividlanguagemakeswritingmoreengagingandmemorable.-Ithelpsreadersvisualizethesceneoridea.解析：写作技巧强调语言表现力，需说明其作用。5.Accordingtothereadingpassage,whatisonewayteenagerscanreducetheirsocialmediause?参考答案-Settingatimelimitfordailysocialmediause.解析：文章常提供解决方案，需结合具体建议。6.ExplainhowtoformaconditionalsentenceinthegrammarsectionofUnit4.参考答案-Firstcondition:"If+presentsimple,will+baseverb"(e.g.,"Ifitrains,Iwillstayhome").解析：虚拟语气结构是单元重点，需说明规则。7.Whatdoesthevocabularyword"melancholy"mean,andprovideanexamplesentence.参考答案-Melancholymeanssadorgloomy.-Example:"Therainydaymadeherfeelmelancholy."解析：词汇解释需包含定义和例句。8.WhyisitnecessarytoprepareforthedebateinthespeakingactivityofUnit4?参考答案-Preparationensuresbalancedargumentsforbothsides.-Ithelpsstudentsorganizetheirthoughtslogically.解析：辩论活动需提前准备，需说明其目的。五、应用题（总共8题，每题4分，共24分）1.Writeashortparagraph(50words)abouthowusingsmartphonesaffectsteenagers'sleeppatterns,basedonthereadingpassageinUnit4.参考答案Smartphonesemitbluelight,whichdisruptssleep.Manyteenagersusethemlateatnight,delayingmelatoninproduction.Thisleadstoinsomniaandfatigue.Thepassagewarnsthatpoorsleepaffectsacademicperformanceandmentalhealth.解析：需结合文章内容，分析手机使用与睡眠的关系。2.Correctthefollowingsentencefromthegrammarexercise:"Shedon'tlikeplayingsportsbecausesheislazy."参考答案"Shedoesn'tlikeplayingsportsbecausesheislazy."解析：主语"she"需用"doesn't"，需说明语法错误并改正。3.Writeaformalemail(60words)toaschoolprincipalabouttheimportanceofenvironmentalprotection,asdiscussedintheunit.参考答案DearPrincipal,Iamwritingtosupporttheschool'senvironmentalinitiatives.Recyclingandreducingplasticusecanmakeabigdifference.Let'sencouragestudentstoadoptsustainablehabits.Thankyouforyourattention.解析：需符合信函格式，表达单元主题。4.Explainthemeaningof"ubiquitous"inthecontextofthereadingpassage,andprovideyourownexample.参考答案Inthepassage,"ubiquitous"meanssocialmediaiseverywhere.Example:"Smartphonesareubiquitousinmodernlife."解析：需结合文章语境，并举例说明。5.Rewritethefollowingsentenceusingasubordinateclausewith"although":"Theweatherwascold,buttheywenthiking."参考答案Althoughtheweatherwascold,theywenthiking.解析：需用"although"改写，符合语法要求。6.Describeapo