2025-2026年陕西省人教版高中英语高二年级上册第8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8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.AccordingtothepassageinUnit8,whichofthefollowingstatementsbestdescribesthemainpurposeofthetext?Thepassagediscussestheimpactofsocialmediaonteenagers'mentalhealth,presentingbothpositiveandnegativeeffectswhilesuggestingwaystousesocialmediaresponsibly.A.Topersuadereaderstocompletelyabandonsocialmedia.B.Toentertainreaderswithhumorousstoriesaboutteenagers.C.Toinformreadersaboutthemixedeffectsofsocialmedia.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的利弊并提出了合理使用建议，故C最符合。A与文章建议矛盾，B未提及娱乐性，D未涉及历史，均排除。2.InthegrammarsectionofUnit8,whichstructureismostcommonlyusedtoexpresshypotheticalsituations?Theunitfocusesonconditionalsentences,particularlythesecondandthirdconditions,suchas"IfIhadmoretime,Iwouldstudyharder."A.Presentperfectcontinuous.B.Pastperfectsimple.C.Secondconditional.D.Futureperfectcontinuous.解析：正确答案为C。题干询问假设情境常用结构，根据单元重点，第二条件句（If+past,would+baseverb）是核心内容，故C正确。A、B、D均未在单元重点中强调。3.ThevocabularyexerciseinUnit8includestheword"anxieties."Whatdoesthistermprimarilyreferto?Theunitdefines"anxieties"aspersistentworriesorfearsthatcanaffectdailylife,oftenlinkedtosocialmediausage.A.Hopesanddreams.B.Physicalpains.C.Emotionaldistress.D.Materialpossessions.解析：正确答案为C。题干要求解释"anxieties"含义，根据单元词汇部分，该词指影响生活的持续担忧，属于情感范畴，故C准确。A、B、D与定义无关。4.Inthereadingpassageaboutdigitaldetox,whichrhetoricaldeviceismostprominentlyusedtopersuadereaders?Thepassageincludesstatistics(e.g.,"70%ofteensfeelstressedafterexcessivesocialmediause")andemotionalappeals(e.g.,"Imagineaworldwithoutconstantnotifications").A.Metaphor.B.Hyperbole.C.Pathos.D.Alliteration.解析：正确答案为C。题干询问说服手法，文中通过数据（logos）和情感描述（e.g.,"Imagine"引发共鸣）强化观点，属于pathos（情感诉求），故C正确。A、B、D未全面体现。5.ThewritingtaskinUnit8asksstudentstowritealettertoafriendabouttheirsocialmediahabits.Whichsentencestructurewouldbemostappropriateforexpressingacontrastbetweenpastandpresent?Theunitemphasizesusingcomparativephraseslike"Unlikelastyear,Inowlimitmysocialmediatime."A.Simplepresenttense.B.Pastcontinuoustense.C.Comparativeadjectives.D.Passivevoice.解析：正确答案为C。题干要求对比句式，根据单元写作指导，比较级（Unlikelastyear...）是核心结构，故C最符合。A、B、D未涉及对比功能。6.Inthelisteningsection,aconversationdiscussestheprosandconsofonlinelearning.Whichphrasebestindicatesabalancedopinion?Thedialogueincludesstatementslike"It'sconvenient,butitlacksface-to-faceinteraction,"showingbothadvantagesanddisadvantages.A."Istronglybelieveonlinelearningisthebest."B."Onlinecoursesareterribleanduseless."C."Whileitsavestime,itcanbeisolating."D."Everyoneshouldavoidonlinelearning."解析：正确答案为C。题干要求平衡观点表达，对话中"convenientbutlacksinteraction"体现权衡，故C正确。A、B、D均为极端观点。7.Theunit'sspeakingactivityinvolvesrole-playingadebateaboutsocialmediaprivacy.Whichquestionwouldbemosteffectivetostartthedebate?Theteacherasks,"Shouldsocialmediaplatformsbemorestrictaboutuserdataprotection?"A."Doyoulikeusingsocialmedia?"B."Issocialmediagoodforteenagers?"C."Howmanyhoursdoyouspendonsocialmedia?"D."Shouldcompaniescollectuserdata?"解析：正确答案为D。题干要求辩论起始问题，根据单元活动设计，关于数据收集的伦理问题（Shouldcompaniescollectdata?）更具深度，故D最合适。A、B、C过于宽泛。8.ThegrammarexerciseinUnit8focusesonthepresentperfectcontinuoustense.Whichsentencecorrectlyusesthistense?Theunitexplainsthatitemphasizesanactioncontinuinguptothepresent,suchas"Shehasbeenstudyingforthreehours."A."Hewenttothestoreyesterday."B."Theywillfinishtheprojectsoon."C."Ihavebeenwaitingfortwoweeks."D."Wehaveeatendinner."解析：正确答案为C。题干要求现在完成进行时例句，根据单元语法讲解，C体现动作持续至现在（"twoweeks"），故C正确。A为过去时，B为将来时，D为现在完成时。9.Thereadingpassagementionsasurveyaboutteenagers'screentime.Whichstatisticalclaimwouldbemostsurprisingtostudents?Thesurveystates,"Theaverageteenagercheckstheirphone150timesaday,"highlightingexcessiveusage.A."Studentsstudyfor2hoursdaily."B."70%usesocialmediaformorethan3hours."C."Theaveragecheckisunder100times."D."Mostteensfeeladdictedtoscreens."解析：正确答案为C。题干要求最令人意外的数据，文中强调"150次/天"，若C为真实数据，与150对比更突出，故C最可能令人震惊。A、B、D均为合理预期。10.Thewritingpromptasksstudentstocomparetraditionalanddigitalcommunication.Whichtransitionwordwouldbestshowacontrast?Theunitsuggestsphraseslike"However,""Ontheotherhand,"and"Conversely"forhighlightingdifferences.A."Therefore"B."Moreover"C."Nevertheless"D."Additionally"解析：正确答案为C。题干要求对比过渡词，根据单元写作指导，"Nevertheless"（尽管如此）强调转折，故C最符合。A、B、D均为递进或补充。二、填空题（总共10题，每题2分，共20分）1.Thepassagearguesthatsocialmediacanleadto_______amongteenagers,butproperusagecanmitigatetheseeffects.参考答案：anxietydisorders解析：根据单元阅读内容，文章明确指出社交媒体与焦虑症（anxietydisorders）关联，故填入该术语。2.Toexpressahypotheticalsituationinthesecondconditional,youwouldusethestructure:"IfI_______moretime,IwouldtraveltoEurope."参考答案：had解析：根据单元语法重点，第二条件句主句用would+baseverb，从句用过去式（"had+pastparticiple"），故填"had"。3.Thesurveyresultsinthelisteningactivityshowthat_______ofstudentsadmittedtofeelingstressedduetosocialmedia.参考答案：80%解析：根据单元听力材料，文中提到"80%ofstudentsreportedstress"，故填具体数据。4.Whenwritingaformalletterinthespeakingtask,youshouldalwaysstartwitha_______salutation,suchas"DearJohn,"or"ToWhomItMayConcern,".参考答案：polite解析：根据单元写作指导，正式信件需使用礼貌称谓，故填"polite"。5.Theunit'svocabularylistdefines"digitaldetox"asaperiodof_______fromelectronicdevicestoimprovementalhealth.参考答案：completewithdrawal解析：根据单元词汇部分，"digitaldetox"指完全戒断电子设备，故填"completewithdrawal"。6.Toexpressacontrastbetweentwoideasinthereadingpassage,theauthorusesphraseslike"_______,socialmediacanalsobeasourceofsupport."参考答案：However解析：根据单元阅读技巧，文中用"However"连接利弊对比，故填入该过渡词。7.ThegrammarexerciseinUnit8explainsthatthethirdconditionalisusedtotalkabout_______thatdidnothappeninthepast.参考答案：hypotheticalsituations解析：根据单元语法讲解，第三条件句（If+pastperfect,wouldhave+pastparticiple）描述未发生的假设，故填"hypotheticalsituations"。8.Thespeakingactivityrequiresstudentstodebatewhethersocialmediaplatformsshouldbemore_______aboutuserprivacy.参考答案：protective解析：根据单元活动设计，辩论涉及隐私保护（protective），故填入该形容词。9.Theunit'slisteningsectionincludesaninterviewwherethespeakerarguesthatsocialmediacan_______mentalhealthbycreatingunrealisticexpectations.参考答案：damage解析：根据听力材料，文中指出社交媒体通过制造不切实际期望损害心理健康，故填"damage"。10.Whenwritingacomparisonessayinthewritingtask,youshoulduse_______languagetohighlightsimilaritiesanddifferences.参考答案：comparative解析：根据单元写作指导，比较文需使用比较级词汇（comparative），故填入该词。三、判断题（总共10题，每题2分，共20分）1.ThereadingpassageinUnit8suggeststhatsocialmediahasnonegativeeffectsonteenagers'mentalhealth.参考答案：False解析：文章明确指出社交媒体存在负面影响（如焦虑），故该陈述错误。2.Thesecondconditionalisusedtodescriberealeventsthathappenedinthepast.参考答案：False解析：第二条件句描述假设性过去事件（IfIhadstudied,Iwouldhavepassed），非真实事件，故错误。3.Theunit'svocabularysectionincludestheword"isolation"asasynonymfor"connection."参考答案：False解析：单元词汇定义中，"isolation"指孤立，与"connection"反义，故错误。4.ThelisteningactivityinUnit8featuresamonologueaboutthebenefitsofonlinelearningonly.参考答案：False解析：听力材料平衡讨论利弊（convenientbutlacksinteraction），非单一正面观点，故错误。5.Thewritingtaskrequiresstudentstowriteanarrativestoryabouttheirsocialmediaexperiences.参考答案：False解析：写作任务为议论文（debateprivacy），非叙事，故错误。6.Theunit'sgrammarsectionexplainsthatthepresentperfectcontinuoustenseisusedforactionscompletedinthepast.参考答案：False解析：该时态强调动作持续至现在（"havebeendoing"），非过去完成，故错误。7.Thespeakingactivityinvolvesarole-playaboutthehistoryofsocialmedia.参考答案：False解析：活动主题为隐私辩论，非历史，故错误。8.Theunit'sreadingpassageincludesstatisticsfromafictionalsurvey.参考答案：False解析：文中数据（如70%使用率）应为真实来源，非虚构，故错误。9.Theunit'svocabularylistdefines"anxiety"asatemporaryfeelingofnervousness.参考答案：False解析：单元定义中，"anxiety"为长期情绪（anxietydisorders），非短暂，故错误。10.Thewritingtaskasksstudentstowriteaformalreportaboutsocialmediatrends.参考答案：False解析：任务为辩论信件（debateletter），非报告，故错误。四、简答题（总共8题，每题2分，共16分）1.ExplainthedifferencebetweenthesecondandthirdconditionalsentencesinUnit8.参考答案：-第二条件句（If+past,would+baseverb）描述与过去事实相反的假设（e.g.,"IfIhadstudied,Iwouldpass"）。-第三条件句（If+pastperfect,wouldhave+pastparticiple）描述更遥远的假设（e.g.,"IfIhadstudiedlastyear,Iwouldhavepassed"）。解析：需对比两种条件句结构、时态及假设距离，答对核心差异得满分。2.Whyisitimportanttousethepresentperfectcontinuoustenseinthewritingtaskaboutscreentime?参考答案：该时态强调行为持续至现在（"Ihavebeenusingmyphoneforhours"），能具体描述屏幕使用时长和影响，使论证更准确。解析：需结合写作任务主题（屏幕时间）和时态功能（持续状态），答对得满分。3.Whatis"digitaldetox,"andhowdoesitrelatetothereadingpassageaboutmentalhealth?参考答案："Digitaldetox"指戒断电子设备以改善心理健康，与文章观点一致：过度使用社交媒体（如150次/天检查）会导致焦虑，戒断可缓解。解析：需解释术语并联系文章论点，答对得满分。4.Howcantransitionwordslike"however"and"conversely"improvethestructureofacomparisonessay?参考答案：这些词引导读者注意对比关系（"However"转折，"Conversely"对立），使论证逻辑清晰，避免重复，增强说服力。解析：需说明过渡词功能及对比较文的作用，答对得满分。5.Whatdoestheunitteachabouttherhetoricaldevice"pathos"inthelisteningsection?参考答案：文章通过情感描述（如"Imagineaworldwithoutnotifications"）引发共鸣，强调社交媒体对情绪的影响，属pathos（情感诉求）。解析：需结合听力案例和修辞定义，答对得满分。6.Whyisitnecessarytouseformallanguageinthedebateletterforthespeakingtask?参考答案：正式语言（如"Shouldplatformsbemoreprotective?"）体现辩论严肃性，符合学术讨论规范，增强可信度。解析：需说明正式语言与辩论场景的匹配性，答对得满分。7.Howdoestheunit'sgrammarsectionhelpstudentswriteabouthypotheticalsituations?参考答案：通过讲解条件句（第二/三条件），学生能准确表达假设（如"IfIhadmoretime,Iwouldtravel"），使写作更严谨。解析：需结合语法知识点和写作应用，答对得满分。8.Whatisthepurposeofthevocabularyexerciseabout"anxieties"inUnit8?参考答案：帮助学生准确描述社交媒体引发的长期心理问题（如焦虑症），提升议论文的精确性和说服力。解析：需说明词汇学习与主题（心理健康）的关联，答对得满分。五、应用题（总共8题，每题4分，共24分）1.Writeashortparagraph(50words)usingatleastthreetransitionwordstocomparethebenefitsanddrawbacksofonlinelearningmentionedinthereadingpassage.参考答案：Onlinelearningisconvenient,butitlacksface-to-faceinteraction.However,itsavestime,whichisbeneficialforbusystudents.Ontheotherhand,isolationcanleadtomentalhealthissues.Thus,abalanceisneeded.解析：需使用过渡词（However,Ontheotherhand,Thus）并覆盖利弊对比，答对得满分。2.Rewritethefollowingsentenceusingthepresentperfectcontinuoustense:"Shestudiedfortwohoursyesterday."参考答案：Shehasbeenstudyingfortwohours.解析：需正确转换时态，答对得满分。3.Createadebatequestionaboutsocialmediaprivacyforthespeakingactivity.参考答案：Shouldsocialmediacompaniesbelegallyrequiredtodeleteuserdatauponrequest?解析：需设计开放性辩论问题，涉及隐私伦理，答对得满分。4.Writeatopicsentenceforanessaycomparingtraditionalanddigitalcommunication.参考答案：Whiletraditionalcommunicationfostersdeeperrelationships,digitalmethodsenhanceefficiencyinmodernsociety.解析：需包含对比结构（While）并概括主题，答对得满分。5.Explainhowthestatistic"70%ofteensfeelstressedfromsocialmedia"supportsthepassage'sargumentaboutmentalhealth.参考答案：该数据量化了社交媒体焦虑的普遍性，证明其负面影响，为文章观点（过度使用导致压力）提供证据。解析：需说明数据与论点的逻辑关系，答对得满分。6.TranslatethefollowingsentenceintoEnglishusingthesecondconditional:"IfIhadmorefree