2025-2026年重庆市北师大版高三英语第9单元同步练习题

2025-2026年重庆市北师大版高三英语第9单元同步练习题一、单项选择题（总共10题，每题2分，共20分）1.AccordingtothepassageinUnit9,whichofthefollowingstatementsbestdescribestherelationshipbetweensocialmediaandmentalhealth?A.Socialmediaplatformsareentirelybeneficialformentalwell-beingastheyprovideendlessentertainment.B.Theexcessiveuseofsocialmediahasbeenscientificallyproventocauseseveredepressionandanxietyamongteenagers.C.Whilesocialmediacanhavenegativeeffects,italsooffersopportunitiesforpositivesocialinteractionandsupport.D.Mentalhealthissuesaresolelyaresultofsocialmediaaddiction,withnoothercontributingfactors.2.ThereadingpassageinUnit9mentionsastudybyDr.EmilyCarter,whichofthefollowingisNOTmentionedasafindingofherresearchondigitalscreentime?A.Prolongedscreenexposureislinkedtosleepdisturbancesinadolescents.B.Socialmediausagecorrelateswithhigherlevelsofself-esteemamongyoungusers.C.Theaveragedailyscreentimeforteenagershasdoubledoverthepastfiveyears.D.Excessivedigitalconsumptionmayleadtoreducedface-to-facecommunicationskills.3.InthegrammarsectionofUnit9,whichsentencecorrectlyusesthepassivevoicetodescribetheexperimentconductedbytheresearchers?A.Theparticipantsweredividedintotwogroupsandtestedforstresslevels.B.Twogroupsweredividedbytheparticipantsandtestedforstresslevels.C.Stresslevelsweretestedbytheparticipantsintwogroups.D.Theexperimentwasconductedbytwogroupsofparticipantsforstresslevels.4.ThewritingtaskinUnit9asksstudentstowritealettertoalocalnewspaperabouttheimportanceofdigitalliteracy.Whichofthefollowingopeningsentencesismostappropriate?A."DearEditor,Iamwritingtotellyouaboutmyfavoritevideogame."B."ToWhomItMayConcern,Iwouldliketosharemythoughtsontechnology."C."DearReaders,Ibelievedigitalliteracyiscrucialforourfuture."D."HelloEveryone,Let’stalkabouthowsmartphoneschangedourlives."5.ThelisteningpassageinUnit9featuresaninterviewwithacybersecurityexpert.WhichofthefollowingtopicsisNOTdiscussedbytheexpert?A.Theriseofonlinescamstargetingelderlypeople.B.Theimportanceofusingstrongpasswordsforonlineaccounts.C.Theroleofschoolsinteachingstudentsaboutinternetsafety.D.Theeconomicimpactofdatabreachesonbusinesses.6.ThespeakingactivityinUnit9requiresstudentstodebatewhethersocialmediaplatformsshouldimposestricteragelimits.Whichargumentsupportsthemotiontolowertheagelimit?A.Youngerusersaremorevulnerabletocyberbullyingandshouldbeprotected.B.Teenagerscanmakeresponsibledecisionsabouttheironlinebehavior.C.Loweringtheagelimitwouldencouragemoredigitalliteracyeducation.D.Olderusersoftenmisusesocialmediaplatformsmorethanyoungerones.7.ThevocabularysectioninUnit9includestheword"ubiquitous."Whichsentencebestdemonstratesitsmeaning?A."Theteacher’subiquitouspresencemadetheclassroomlively."B."Ubiquitousdeviceshavebecomeapartofdailylife."C."Theubiquitousnoisefromtheconstructionsitedisturbedtheneighbors."D."Ubiquitousproblemsarethosethatcannotbesolvedeasily."8.ThereadingpassageinUnit9discussesthebenefitsofmindfulnessmeditation.WhichofthefollowingisNOTlistedasabenefit?A.Reducedstressandimprovedconcentration.B.Enhancedcreativityandproblem-solvingskills.C.Increasedriskofmentalhealthissues.D.Bettersleepqualityandemotionalregulation.9.ThewritingpromptinUnit9asksstudentstodescribeamemorableexperienceusingtechnology.Whichsentencestructurewouldbemosteffectivefororganizingtheessay?A.Startwithacatchyopening,thenlistrandomdetailswithoutaclearnarrative.B.Beginwithathesisstatement,followedbychronologicaleventsandreflections.C.Focusonlyonthetechnicalaspectsofthetechnologyused,ignoringpersonalfeelings.D.Useaquestionastheopeningandansweritthroughouttheessaywithoutaclearstructure.10.ThegrammarexerciseinUnit9teststheuseofthesubjunctivemood.Whichsentencecorrectlyusesthesubjunctivetoexpressahypotheticalsituation?A."IfIwereadoctor,Iwouldtraveltheworld."B."Ifshehadstudiedharder,shewouldhavepassedtheexam."C."Ifitrainstomorrow,wewillcancelthepicnic."D."Iftheyweretowinthelottery,theywouldbuyabighouse."二、填空题（总共10题，每题2分，共20分）1.AccordingtothepassageinUnit9,excessivesocialmediausecanleadto_______amongteenagers,whichaffectstheirmentalwell-being.2.ThestudybyDr.EmilyCarterinUnit9foundthatdigitalscreentimeispositivelycorrelatedwith_______inadolescents.3.InthegrammarsectionofUnit9,thesentence"Theexperimentwasconductedbytheresearchers"usesthe_______voicetoemphasizetheactionratherthanthesubject.4.ThewritingtaskinUnit9asksstudentstowritealettertoalocalnewspaperabouttheimportanceof_______inmodernsociety.5.ThelisteningpassageinUnit9featuresaninterviewwithacybersecurityexpertwhodiscussestheriseof_______targetingelderlypeopleonline.6.ThespeakingactivityinUnit9requiresstudentstodebatewhethersocialmediaplatformsshouldimposestricter_______toprotectyoungerusers.7.ThevocabularysectioninUnit9includestheword"ubiquitous,"whichmeanssomethingthatispresent_______ineverydaylife.8.ThereadingpassageinUnit9discussesthebenefitsofmindfulnessmeditation,suchasreduced_______andimprovedconcentration.9.ThewritingpromptinUnit9asksstudentstodescribeamemorableexperienceusingtechnology,whichshouldincludetheir_______andreflections.10.ThegrammarexerciseinUnit9teststheuseofthesubjunctivemood,whichisusedtoexpress_______orhypotheticalsituations.三、判断题（总共10题，每题2分，共20分）1.ThepassageinUnit9suggeststhatsocialmediaplatformsareentirelyharmfultomentalhealth,withnopositiveaspects.(False)2.Dr.EmilyCarter’sresearchinUnit9indicatesthatdigitalscreentimehasnoimpactonteenagers’sleeppatterns.(False)3.Thepassivevoiceisalwaysmoreeffectivethantheactivevoiceinacademicwriting.(False)4.ThewritingtaskinUnit9requiresstudentstowriteapoemaboutdigitalliteracy.(False)5.ThelisteningpassageinUnit9discussestheeconomicbenefitsofdatabreachesforcompanies.(False)6.Loweringtheagelimitforsocialmediaplatformswouldencouragemoreresponsibleonlinebehavioramongteenagers.(False)7.Theword"ubiquitous"inUnit9meanssomethingthatisrareandhardtofind.(False)8.ThereadingpassageinUnit9mentionsthatmindfulnessmeditationcanworsenmentalhealthissues.(False)9.ThewritingpromptinUnit9asksstudentstodescribeafictionalstoryabouttechnology,notarealexperience.(False)10.ThesubjunctivemoodinUnit9isonlyusedforexpressingwishesorhypotheticalsituations.(True)四、简答题（总共8题，每题2分，共16分）1.AccordingtothepassageinUnit9,whatarethemainreasonswhyteenagersareaddictedtosocialmedia?2.DescribetwokeyfindingsfromDr.EmilyCarter’sresearchondigitalscreentime.3.Explainthedifferencebetweentheactiveandpassivevoiceinyourownwords.4.Whyisdigitalliteracyimportantinmodernsociety?Providetwoexamples.5.WhatarethreecommononlinescamsmentionedinthelisteningpassageinUnit9?6.Howcansocialmediaplatformsprotectyoungerusersfromcyberbullying?Suggesttwomethods.7.Definetheword"ubiquitous"andgiveanexampleofitsuseinasentence.8.WhatarethreebenefitsofmindfulnessmeditationmentionedinthereadingpassageinUnit9?五、应用题（总共8题，每题4分，共24分）1.Writeashortparagraph(50words)explaininghowexcessivesocialmediausecanaffectteenagers’mentalhealth.2.Describeastudyondigitalscreentimethatyouwouldliketoconduct.Whatwouldyourresearchquestionsbe?3.Rewritethesentence"Theresultswereanalyzedbytheteam"intheactivevoice.4.Drafttheopeningparagraphofalettertoalocalnewspaperabouttheimportanceofdigitalliteracy.5.Summarizethemainpointsofthelisteningpassageaboutonlinescamsinthreesentences.6.Debatewhethersocialmediaplatformsshouldimposestricteragelimits.Provideoneargumentforandoneagainst.7.Usetheword"ubiquitous"inasentencethatdescribesacommontechnologyinmodernlife.8.Explainhowmindfulnessmeditationcanhelpimprovesleepquality,usingdetailsfromthereadingpassageinUnit9.【标准答案及解析】一、单项选择题1.C)Whilesocialmediacanhavenegativeeffects,italsooffersopportunitiesforpositivesocialinteractionandsupport.-解析：ThepassageinUnit9balancestheprosandconsofsocialmedia,statingthatithasbothnegativeandpositiveimpacts.OptionCaccuratelyreflectsthisnuancedview.2.B)Socialmediausagecorrelateswithhigherlevelsofself-esteemamongyoungusers.-解析：ThestudybyDr.EmilyCartermentionscorrelationsbetweenscreentimeandsleepdisturbances,digitalconsumption,andcommunicationskills,butnotself-esteem.3.A)Theparticipantsweredividedintotwogroupsandtestedforstresslevels.-解析：Thepassivevoiceemphasizestheaction(testing)ratherthanthesubject(participants),whichisappropriateforscientificwriting.4.C)"DearReaders,Ibelievedigitalliteracyiscrucialforourfuture."-解析：Thisopeningdirectlyaddressesthetopicandsetsacleartonefortheletter.5.D)Theeconomicimpactofdatabreachesonbusinesses.-解析：Theexpertfocusesononlinesafety,scams,andeducation,noteconomicimpacts.6.B)Teenagerscanmakeresponsibledecisionsabouttheironlinebehavior.-解析：Thisargumentsupportsloweringagelimitsbyemphasizingmaturity.7.B)Ubiquitousdeviceshavebecomeapartofdailylife.-解析：Thissentencecorrectlyuses"ubiquitous"todescribewidespreadtechnology.8.C)Increasedriskofmentalhealthissues.-解析：Mindfulnessmeditationisknowntoreducestressandimprovementalhealth,notincreaserisks.9.B)Beginwithathesisstatement,followedbychronologicaleventsandreflections.-解析：Thisstructureorganizestheessaylogicallyandeffectively.10.A)IfIwereadoctor,Iwouldtraveltheworld.-解析：Thesubjunctivemoodisusedtoexpresshypotheticalsituations.二、填空题1.anxiety2.sleepdisturbances3.passive4.digitalliteracy5.onlinescams6.agelimits7.everywhere8.stress9.personalexperiences10.hypothetical三、判断题1.False-解析：Thepassagediscussesbothpositiveandnegativeeffectsofsocialmedia.2.False-解析：Dr.Carter’sresearchlinksscreentimetosleepissues.3.False-解析：Bothvoiceshavetheiruses;passiveisnotalwaysbetter.4.False-解析：Thetaskrequiresaletter,notapoem.5.False-解析：Thepassagefocusesonsafety,noteconomicbenefits.6.False-解析：Loweringagelimitsmaynotguaranteeresponsiblebehavior.7.False-解析：Ubiquitousmeanswidespread,notrare.8.False-解析：Mindfulnessmeditationisknowntoimprovementalhealth.9.False-解析：Thepromptasksforarealexperience.10.True-解析：Thesubjunctiveisusedforwishesandhypotheticals.四、简答题1.Teenagersareaddictedtosocialmediaduetoitsaddictivedesign(e.g.,notifications,infinitescrolling)andtheneedforsocialvalidation(likes,comments).2.Twofindings:Screentimecorrelateswithsleepdisturbances;excessiveusereducesface-to-facecommunicationskills.3.Theactivevoiceemphasizesthesubjectperformingtheaction(e.g.,"Theteachertaughttheclass"),whilethepassivevoiceemphasizestheactionanditsobject(e.g.,"Theclasswastaughtbytheteacher").4.Digitalliteracyisimportantbecauseithelpsindividualscriticallyevaluateonlineinformationandprotectthemselvesfromscams.Example:Usingstrongpasswords.5.Threescams:Phishingemails,fakecharityrequests,andromancescams.6.Platformscanprotectusersbyimplementingstrictermoderationandprovidingsafetyeducation.7.Ubiquitousmeanspresenteverywhere;examp