2025-2026年陕西省人教版高中英语高二年级上册第7单元课后练习题

2025-2026年陕西省人教版高中英语高二年级上册第7单元课后练习题一、单项选择题（总共10题，每题2分，共20分）1.AccordingtothepassageinUnit7,whichofthefollowingstatementsbestdescribesthemainpurposeofthetext?Thepassagediscussestheimpactofsocialmediaonteenagers'mentalhealth,presentingbothpositiveandnegativeeffectswhilesuggestingwaystousesocialmediaresponsibly.A.Topersuadereaderstocompletelyabandonsocialmedia.B.Toentertainreaderswithhumorousstoriesaboutteenagers.C.Toinformreadersaboutthemixedeffectsofsocialmediaonteenagers.D.Tosellabookaboutthehistoryofsocialmedia.解析：正确答案为C。题干要求选出文章主旨，根据文章内容，文章平衡讨论了社交媒体对青少年心理健康的积极和消极影响，并提出了负责任使用社交媒体的方法。选项A与文章观点相反，选项B未提及娱乐性，选项D未涉及历史内容，均不符合文章主旨。选项C准确概括了文章的平衡性和信息性特点。2.InthereadingmaterialfromUnit7,akeyargumentisthatexcessivesocialmediausecanleadtoanxiety.Whichsentencefromthepassagewouldbestsupportthisclaim?Thepassageincludesastudyshowingthat60%ofteenagersreportedincreasedanxietyafterspendingmorethanthreehoursdailyonsocialmediaplatforms.A."Socialmediacanhelpteenagersstayconnectedwithfriends."B."Manycelebritiesusesocialmediatopromotetheirbrands."C."Someteenagersfindsocialmediaplatformsusefulforlearning."D."60%ofteenagersreportedincreasedanxietyafterspendingmorethanthreehoursdailyonsocialmediaplatforms."解析：正确答案为D。题干要求找出支持“过度使用社交媒体会导致焦虑”的论据，选项D直接引用了文章中的研究数据，明确指出60%的青少年因每日使用社交媒体超过三小时而感到焦虑，直接支持了该论点。其他选项均未涉及焦虑问题。3.ThegrammarsectioninUnit7focusesontheuseofthepresentperfecttense.Whichsentencecorrectlyusesthistense?Thepassageexplainsthatthepresentperfecttenseisusedtodescribeactionsthatstartedinthepastandcontinuetothepresent,suchas"ShehasstudiedEnglishforfiveyears."A."Hewenttothestoreyesterday."B."Theywillfinishtheprojectnextweek."C."Hehasfinishedtheproject."D."Theyhavebeentothestoremanytimes."解析：正确答案为C。题干要求选择正确使用现在完成时的句子，根据语法讲解，现在完成时用于描述过去开始并持续至今的动作。选项C“他已完成项目”符合该用法。选项A为一般过去时，选项B为一般将来时，选项D为现在完成进行时，均不符合要求。4.InthewritingtaskfromUnit7,studentsareaskedtowritealettertoafriendabouttheiropiniononsocialmedia.Whichopeningsentencewouldbemostappropriate?Thepromptemphasizesexpressingpersonalopinionsandprovidingreasons.A."Dearteacher,Iwouldliketodiscusstheweathertoday."B."Hello,howareyou?Iwanttotellyouaboutmyfavoritemovie."C."Dearfriend,Ihavesomethingimportanttoshareaboutsocialmedia."D."Towhomitmayconcern,Iamwritingtoexpressmyviews."解析：正确答案为C。题干要求选择合适的书信开头，根据写作任务要求，应直接表达对社交媒体的看法。选项C“亲爱的朋友，我想和你分享我对社交媒体的看法”符合主题和礼貌用语。选项A、B偏离主题，选项D过于正式，不适用于朋友间的书信。5.ThevocabularysectioninUnit7introducestheword"addictive."Whichsentencebestexplainsitsmeaning?Thepassagedefines"addictive"assomethingthatcausesapersontobecomeunabletostopusingit,likeadrugorahabit.A."Thenewsmartphoneisveryaddictivebecauseithasmanyfeatures."B."Sheisaddictedtochocolatebecausesheeatsiteveryday."C."Themoviewasaddictivebecauseitkeptmeinterested."D."Headdedanewwordtohisvocabularyyesterday."解析：正确答案为B。题干要求解释“addictive”的含义，根据文章定义，该词指让人无法停止使用的事物，如药物或习惯。选项B“她沉迷于巧克力，因为她每天都吃”直接体现了该词的含义。选项A、C描述的是吸引力而非成瘾性，选项D与词汇无关。6.InthespeakingactivityfromUnit7,studentsareaskedtodebatewhethersocialmediaisbeneficialorharmful.Whichargumentwouldbemosteffectiveforthe"harmful"side?Thedebaterequiresprovidingevidenceandlogicalreasoning.A."Socialmediahelpspeoplestayintouchwithdistantrelatives."B."Manybusinessesusesocialmediatoreachcustomers."C."Socialmediacancausepeopletocomparethemselveswithothersandfeelunhappy."D."Socialmediaplatformscreatejobopportunitiesforcontentcreators."解析：正确答案为C。题干要求为“有害”观点提供有效论据，根据辩论要求，应提供证据和逻辑推理。选项C“社交媒体会导致人们与他人比较并感到不快乐”直接指出负面影响，符合要求。选项A、B为正面论点，选项D涉及就业机会，与有害论点无关。7.ThereadingpassageinUnit7mentionsasurveyaboutteenagers'socialmediahabits.Whichquestionwouldbemostrelevanttothesurvey'spurpose?Thesurveyaimstounderstandhowsocialmediaaffectsteenagers'dailylives.A."Whatisyourfavoritecolor?"B."Howmanyhoursdoyouspendonsocialmediadaily?"C."Doyoupreferwatchingvideosorreadingarticlesonline?"D."Whatisyourfavoritehobbyoutsideofschool?"解析：正确答案为B。题干要求找出与调查目的最相关的问题，根据文章说明，调查旨在了解社交媒体如何影响青少年的日常生活。选项B“你每天花多少时间在社交媒体上”直接涉及使用时长，符合调查目的。其他选项与社交媒体无关。8.InthegrammarexercisefromUnit7,whichsentencecorrectlyusesarelativeclause?Thepassageexplainsthatrelativeclausesmodifynounsandstartwithwordslike"who,""which,"or"that."A."Thegirlwhoiswearingabluedressismysister."B."Iboughtabookthatwasveryinteresting."C."TheteacherwhoteachesEnglishiskind."D."Heisthepersonwhichwontheaward."解析：正确答案为A。题干要求选择正确使用关系从句的句子，根据语法讲解，关系从句修饰名词，以“who”“which”“that”等词开头。选项A“穿着蓝色裙子的女孩是我的妹妹”正确使用了“who”引导的关系从句。选项B、C语法正确但未使用关系从句，选项D使用了“which”但应为“who”。9.ThewritingpromptinUnit7asksstudentstowriteashortstoryaboutapersonwhoovercomesachallengeusingsocialmedia.Whichplotpointwouldbemostengaging?Thestoryshouldfocusontheroleofsocialmediainproblem-solving.A.Theprotagonistmeetsafamousinfluencerwhogivesthemadvice.B.Theprotagonistusessocialmediatofindagroupofpeoplewithsimilarproblems.C.Theprotagonistpostsavideoabouttheirchallengeandreceivesnocomments.D.Theprotagonistforgetstochecktheirsocialmediaandfailstosolvetheproblem.解析：正确答案为B。题干要求选择最吸引人的情节，根据写作要求，应突出社交媒体在解决问题中的作用。选项B“主人公使用社交媒体找到有相似问题的人”直接体现了社交媒体的互助功能，情节更具吸引力。其他选项缺乏社交媒体的核心作用。10.InthespeakingactivityfromUnit7,studentsareaskedtodescribeasocialmediatrendtheyfindinteresting.Whichdescriptionwouldbemostdetailedandengaging?Thetaskrequiresprovidingspecificexamplesandpersonalopinions.A."TikTokisapopularappforshortvideos."B."ManypeopleuseInstagramtosharephotos."C."InfluencersonYouTubegiveproductreviews."D."Socialmediatrendschangeveryquickly."解析：正确答案为C。题干要求选择最详细和吸引人的描述，根据任务要求，应提供具体例子和个人观点。选项C“YouTube上的网红提供产品评论”不仅描述了趋势，还提供了具体平台和内容类型，更具细节和吸引力。其他选项过于笼统。二、填空题（总共10题，每题2分，共20分）1.ThepassageinUnit7discusseshowsocialmediacan______teenagers'self-esteemwhentheycomparetheirlivestoothers'.参考答案：lower解析：根据文章内容，社交媒体会导致青少年通过与他人比较而降低自尊心。空格处应填“lower”（降低）。2.Inthegrammarsection,thepresentperfecttenseisusedtodescribeactionsthat______inthepastandcontinuetothepresent.参考答案：started解析：根据语法讲解，现在完成时用于描述过去开始并持续至今的动作。空格处应填“started”（开始）。3.Thereadingpassagementionsastudyshowingthat______ofteenagersreportedincreasedanxietyafterexcessivesocialmediause.参考答案：60%解析：文章明确指出60%的青少年因过度使用社交媒体而感到焦虑。空格处应填“60%”。4.Thewritingtaskasksstudentstowritea______abouttheiropiniononsocialmedia,providingreasonsandexamples.参考答案：letter解析：写作任务要求写一封信给朋友，表达对社交媒体的看法。空格处应填“letter”（信）。5.Theword"addictive"meanssomethingthatcausesapersontobecome______toit,likeadrugorahabit.参考答案：unabletostop解析：根据文章定义，“addictive”指让人无法停止使用的事物。空格处应填“unabletostop”（无法停止）。6.Inthespeakingactivity,studentsareaskedtodebatewhethersocialmediais______orharmful,providingevidenceandreasoning.参考答案：beneficial解析：辩论任务要求讨论社交媒体是有益还是有害。空格处应填“beneficial”（有益）。7.Thesurveyinthepassageaimstounderstandhowsocialmediaaffectsteenagers'______lives.参考答案：daily解析：文章说明调查旨在了解社交媒体如何影响青少年的日常生活。空格处应填“daily”（日常）。8.Thegrammarexercisefocusesontheuseofrelativeclauses,which______nounsandstartwithwordslike"who,""which,"or"that."参考答案：modify解析：根据语法讲解，关系从句修饰名词。空格处应填“modify”（修饰）。9.Thewritingpromptasksstudentstowriteashortstoryaboutapersonwho______achallengeusingsocialmedia.参考答案：overcomes解析：写作任务要求写一个故事，讲述一个人如何使用社交媒体克服挑战。空格处应填“overcomes”（克服）。10.Thespeakingactivityasksstudentstodescribeasocialmedia______theyfindinteresting,providingspecificexamples.参考答案：trend解析：任务要求描述一个有趣的社交媒体趋势。空格处应填“trend”（趋势）。三、判断题（总共10题，每题2分，共20分）1.ThepassageinUnit7suggeststhatsocialmediahasnonegativeeffectsonteenagers'mentalhealth.参考答案：错误解析：文章平衡讨论了社交媒体的积极和消极影响，并未否认其负面影响。2.Thepresentperfecttenseisusedtodescribeactionsthathappenedataspecifictimeinthepast.参考答案：错误解析：现在完成时用于描述过去开始并持续至今的动作，而非特定过去的动作。3.Theword"addictive"meanssomethingthatisveryenjoyableandfun.参考答案：错误解析：“addictive”指让人无法停止使用的事物，强调成瘾性而非乐趣。4.Inthespeakingactivity,studentsshouldfocusonlyontheirpersonalopinionsaboutsocialmedia.参考答案：错误解析：辩论要求提供证据和逻辑推理，而非仅个人观点。5.Thesurveyinthepassageaskedteenagersabouttheirfavoritecolorstounderstandsocialmediahabits.参考答案：错误解析：文章说明调查关注社交媒体使用时长，而非颜色偏好。6.Relativeclausescanstartwithwordslike"because"or"so"tomodifynouns.参考答案：错误解析：关系从句以“who”“which”“that”等词开头，而非“because”或“so”。7.Thewritingtaskasksstudentstowriteapoemaboutsocialmediainsteadofaletter.参考答案：错误解析：写作任务要求写一封信给朋友，表达对社交媒体的看法。8.Thereadingpassagementionsthatsocialmediatrendschangeveryslowly.参考答案：错误解析：文章未提及趋势变化速度，但提到其变化性。9.ThegrammarexerciseinUnit7focusesontheuseofthepresentcontinuoustense.参考答案：错误解析：该单元语法重点是现在完成时，而非现在进行时。10.Thespeakingactivityasksstudentstodescribeasocialmediatrendtheyfindboring.参考答案：错误解析：任务要求描述一个有趣的趋势，而非无聊的趋势。四、简答题（总共8题，每题2分，共16分）1.AccordingtothepassageinUnit7,whataretwopositiveeffectsofsocialmediaonteenagers?参考答案：-Socialmediahelpsteenagersstayconnectedwithfriendsandfamily.-Socialmediaprovidesaplatformforteenagerstoexpresstheircreativityandinterests.解析：文章提到社交媒体的积极影响包括保持联系和表达创意。2.Explainthedifferencebetweenthepresentperfecttenseandthepresentsimpletense.参考答案：-Thepresentperfecttenseisusedtodescribeactionsthatstartedinthepastandcontinuetothepresent,oractionsthathappenedatanunspecifiedtimeinthepast.-Thepresentsimpletenseisusedtodescribehabitualactionsorfacts.解析：根据语法讲解，现在完成时用于过去开始至今的动作或不确定过去的动作，而现在简单时用于习惯性动作或事实。3.Whatdoestheword"addictive"meaninthecontextofsocialmediause?参考答案："Addictive"meansthatsocialmediaissoengagingthatitmakespeopleunabletostopusingit,similartoadrugorahabit.解析：根据文章定义，“addictive”指社交媒体让人无法停止使用，如药物或习惯。4.Whyisitimportanttouseevidenceandreasoninginthedebateaboutsocialmedia?参考答案：Usingevidenceandreasoningmakesthedebatemoreconvincingandlogical,helpingtopersuadeothersofthe观点.解析：证据和推理使辩论更具说服力和逻辑性，帮助他人接受观点。5.Describeasocialmediatrendyoufindinterestingandexplainwhy.参考答案：-Trend:ShortvideochallengesonTikTok.-Reason:Theyarecreative,fun,andallowpeopletoshowcasetheirtalents.解析：选择一个趋势（如TikTok挑战），并解释其吸引力（创意、趣味、展示才华）。6.Howdoesthepresentperfecttensehelpindescribingsocialmediahabits?参考答案：Thepresentperfecttensehelpsdescribehowlongpeoplehavebeenusingsocialmedia,suchas"Ihavebeenonsocialmediaforfiveyears."解析：现在完成时用于描述使用社交媒体的时长，如“我使用社交媒体五年了”。7.Whatshouldstudentsincludeintheirletteraboutsocialmedia?参考答案：-Personalopinionsaboutsocialmedia.-Reasonsandexamplestosupporttheirviews.-Afriendlyandrespectfultone.解析：信件应包含个人观点、理由和例子，以及友好尊重的语气。8.Whyisitusefultouserelativeclausesinwriting?参考答案：Relativeclauseshelpmakewritingmoreconciseandclearbycombiningsentencesandprovidingadditionalinformationaboutnouns.解析：关系从句使写作更简洁清晰，通过合并句子提供名词的额外信息。五、应用题（总共8题，每题4分，共24分）1.Writeashortparagraph(5-7sentences)abouthowsocialmediaaffectsyourdailylife.Includeatleastonepresentperfecttensesentence.参考答案：Socialmediaisanimportantpartofmydailylife.Iuseittostayupdatedwithfriendsandnews.IhavebeenusingInstagramforthreeyears,andithashelpedmediscovernewhobbies.Sometimes,itcanbeoverwhelming,butoverall,itenrichesmylife.Ithinksocialmediaisausefultoolwhenusedresponsibly.解析：段落应包含日常影响、现在完成时句子（如“我使用Instagram三年了”），并表达个人看法。2.Createadebateoutline(3pointsforeachside)forthetopic"Issocialmediabeneficialorharmful?"参考答案：-Beneficial:3.Keepspeopleconnectedwithdistantfriends.4.Providesopportunitiesforlearningandself-improvement.5.Helpsinraisingawarenessaboutimportantissues.-Harmful:6.Cancauseanxietyanddepressionduetocomparison.7.Takestimeawayfromreal-lifeinteractions.8.Mayexposepeopletofakenewsandmisinformation.解析：辩论大纲应包含双方观点，每方3点，分别支持有益和有害论点。9.Writeashortstory(8-10sentences)aboutapersonwhousessocialmediatoovercomeachallenge.参考答案：Sarahwasstrugglingwithlonelinessaftermovingtoanewcity.Shedecidedtojoinasocialmediagroupforpeoplewholovehiking.There,shefoundfriendswhoinvitedheronweekendhikes.Afterafewmonths,shehadasupportivecommunityandmademanynewfriends.Socialmediahelpedherovercomeherisolationanddiscoverherpassionforhiking.解析：故事应包含挑战（孤独）、社交媒体的作用（找到社群）、结果（克服挑战、结交朋友、发现爱好）。10.Describeasocialmediatrendyoufindinterestingandexplainwhyitispopular.参考答案：-Trend:"Duet"featureonTikTok.-Explanation:Itispopularbecauseitallowsuserstocollaboratewithothers,creatingfunandcreativeinteractions.Peopleenjoyseeinghowdifferentcreatorsinterpretthesamevideo.Itpromotescreativityandcommunityengagement.解析：描述一个趋势（如TikTok的“Duet”功能），并解释其流行原因（合作、创意、互动、社区参与）。11.Writealetter(5-7sentences)toafriendaboutyouropiniononsocialmedia.参考答案：Dearfriend,Ithinksocialmediaisagreatwaytostayconnected,butit'simportanttouseitwisely.Ienjoyseeingyourpostsandstayingupdated,butIalsonoticehowitcanmakesomepeoplefeelbad.Ibelieveweshouldbalanceonlineandofflinelife.Whatdoyouthink?解析：信件应表达对社交媒体的看法（利弊平衡），包含个人观点和提问。12.Usethepresentperfecttensetowriteaparagraph(5-7sentences)aboutyourexperiencewithsocialmedia.参考答案：Ihavebeenusingsocialmediaforf