英语长篇文章题目及答案

英语长篇文章题目及答案一、阅读理解（30分）1.篇章阅读理解（15分）阅读以下文章，然后回答问题。TheDigitalRevolution:TransformingEveryAspectofOurLivesThedigitalrevolutionhasfundamentallychangedhowwelive,work,andinteractwitheachother.Overthepastfewdecades,wehavewitnessedanunprecedentedaccelerationintechnologicaladvancementthathasreshapedvirtuallyeverysectorofsociety.Fromcommunicationtohealthcare,fromeducationtoentertainment,digitaltechnologieshaveintroducednewpossibilitieswhilesimultaneouslypresentinguniquechallenges.Communicationhasperhapsbeenthemostvisiblytransformedarea.Theadventoftheinternet,mobiledevices,andsocialmediaplatformshasconnectedpeopleacrossgeographicalboundariesinwayspreviouslyunimaginable.Wecannowinstantaneouslyshareinformation,ideas,andemotionswithindividualsontheoppositesideoftheplanet.Thisconnectivityhasnotonlybroughtpeoplecloserbuthasalsocreatednewformsofinteractionandcommunitybuilding.However,ithasalsoraisedconcernsaboutprivacy,informationoverload,andthequalityofourrelationshipsinanincreasinglydigitalworld.Theworkplacehasundergoneequallydramaticchanges.Traditionalofficeenvironmentsarebeingredefinedasremoteworkbecomesincreasinglyviable.Cloudcomputing,collaborativesoftware,anddigitalprojectmanagementtoolshaveenabledteamstocollaborateeffectivelyregardlessoftheirphysicallocation.Thisshifthasofferedgreaterflexibilityforemployeesbuthasalsocreatednewmanagementchallengesandblurredtheboundariesbetweenworkandpersonallife.Inthefieldofeducation,digitaltechnologieshavedemocratizedaccesstoinformationandlearningopportunities.Onlinecourses,educationalapps,anddigitallibrarieshavemadeknowledgeavailabletoanyonewithaninternetconnection,regardlessoftheirlocationorsocioeconomicbackground.Adaptivelearningtechnologiescanpersonalizeeducationalcontenttomeetindividualstudentneeds,potentiallyimprovinglearningoutcomes.However,thedigitaldivideremainsasignificantconcern,asnotallstudentshaveequalaccesstothesetechnologies.Healthcarehasalsobeenrevolutionizedbydigitalinnovation.Electronichealthrecordshavestreamlinedpatientinformationmanagement,telemedicinehasexpandedaccesstocare,andwearabledevicesenablecontinuoushealthmonitoring.Artificialintelligenceisbeingappliedtodiagnosediseasesmoreaccuratelyanddeveloppersonalizedtreatmentplans.Theseadvancementspromisetoimprovepatientoutcomesandmakehealthcaremoreefficientandaccessible.Despitethesebenefits,thedigitalrevolutionhasalsointroducedsignificantchallenges.Cybersecuritythreatshavegrownincomplexityandfrequency,requiringconstantvigilanceandrobustprotectivemeasures.Therapidpaceoftechnologicalchangehascreatedconcernsaboutjobdisplacementandtheneedforcontinuousreskilling.Additionally,issuesrelatedtodataprivacy,algorithmicbias,andtheenvironmentalimpactofdigitalinfrastructurerequirecarefulconsiderationandregulation.Lookingahead,thedigitalrevolutionshowsnosignsofslowingdown.Emergingtechnologiessuchasquantumcomputing,advancedartificialintelligence,andtheInternetofThingspromisetofurthertransformourworld.Aswenavigatethisongoingtransformation,itwillbeessentialtoharnessthebenefitsofdigitaltechnologieswhileaddressingtheirchallenges.Thiswillrequirecollaborationbetweentechnologists,policymakers,educators,andcitizenstoensurethatdigitalprogressserveshumanity'sbestinterests.Questions1-5arebasedonthepassageabove.Choosethebestanswerforeachquestion.(3pointseach)1.Accordingtothepassage,whichareahasbeenthemostvisiblytransformedbythedigitalrevolution?A.HealthcareB.CommunicationC.EducationD.Workplace2.Whatisoneofthemainconcernsregardingdigitalcommunicationmentionedinthepassage?A.LimitedaccesstotechnologyB.PrivacyissuesC.LackofeducationalcontentD.Poorinternetconnectivity3.Howhastheworkplacebeenchangedbydigitaltechnologies?A.ByrequiringemployeestoworklongerhoursB.BymakingremoteworkmoreviableC.ByeliminatingtheneedforphysicalofficesD.Byreducingthenumberofavailablejobs4.Whatisabenefitofdigitaltechnologiesineducationmentionedinthepassage?A.EqualaccessforallstudentsregardlessoflocationB.ReductioninteacherworkloadC.DecreasedneedforphysicaltextbooksD.Higherstandardizedtestscores5.Whatdoesthepassagesuggestaboutfuturetechnologicaldevelopments?A.TheywillslowdownthepaceofchangeB.TheywillfocusprimarilyonentertainmentapplicationsC.TheywillincludequantumcomputingandadvancedAID.Theywillreducetheneedforinternetconnectivity2.细节理解题（15分）阅读以下文章，然后回答问题。TheImpactofClimateChangeonGlobalAgricultureClimatechangerepresentsoneofthemostsignificantchallengesfacingmodernagriculture.Risingglobaltemperatures,changingprecipitationpatterns,andincreasedfrequencyofextremeweathereventsarealteringgrowingconditionsworldwide.Thesechangesposebothimmediateandlong-termthreatstofoodsecurity,agriculturalproductivity,andrurallivelihoods.Temperatureincreasesdirectlyaffectplantgrowthanddevelopment.Mostcropshaveoptimaltemperaturerangesforgermination,growth,andyieldproduction.Astemperaturesrisebeyondtheseoptimalranges,cropyieldstendtodecline.Forexample,wheatyieldsdecreasebyapproximately6%forevery1°Cincreaseinglobalmeantemperature.Similarly,maizeyieldsdeclineby7.6%andriceby3.2%underthesameconditions.Thesereductionsinstaplecropproductionhaveprofoundimplicationsforglobalfoodsupplies.Changesinprecipitationpatternspresentadditionalchallenges.Someregionsareexperiencingincreasedrainfallandflooding,whichcandamagecropsandleadtosoilerosion.Otherregionsfacemorefrequentandseveredroughtconditions,reducingwateravailabilityforirrigation.Theunpredictabilityofrainfallmakesitdifficultforfarmerstoplanplantingandharvestingschedules,potentiallyreducingbothyieldsandquality.Extremeweatherevents—suchashurricanes,floods,andheatwaves—arebecomingmorefrequentandintenseduetoclimatechange.Theseeventscancauseimmediateandcatastrophicdamagetocrops,destroyagriculturalinfrastructure,anddisplacefarmers.Forinstance,the2019MidwestfloodsintheUnitedStatescausedanestimated$3billioninagriculturallosses,destroyingmillionsofacresofcropsandlivestock.Climatechangealsoaffectsthedistributionandbehaviorofpestsanddiseases.Warmertemperaturesallowpeststosurvivewintersmoreeasilyandexpandtheirgeographicalrange.Newpestsanddiseasesareemerginginregionswheretheywerepreviouslyunabletothrive.Thisincreasestheneedforpesticidesandothercropprotectionmeasures,whichcanhaveenvironmentalandeconomicconsequences.Adaptationstrategiesarebeingdevelopedtohelpagriculturecopewiththesechallenges.Theseincludedevelopingclimate-resilientcropvarietiesthroughtraditionalbreedingandgeneticmodification,implementingmoreefficientwatermanagementsystems,adoptingconservationagriculturepracticesthatimprovesoilhealthandwaterretention,anddiversifyingfarmingsystemstoreducevulnerabilitytospecificclimatestresses.Despitetheseefforts,therelationshipbetweenclimatechangeandagricultureiscomplexandmultifaceted.WhilesomeregionsmayinitiallybenefitfromlongergrowingseasonsorincreasedCO2levels(whichcanboostphotosynthesisinsomeplants),theoveralltrendpointstowarddecreasedagriculturalproductivityinmanyoftheworld'sbreadbaskets.Addressingthischallengerequirescoordinatedactionatlocal,national,andinternationallevelstodevelopsustainableagriculturalsystemsthatcanwithstandtheimpactsofachangingclimate.Questions6-10arebasedonthepassageabove.Choosethebestanswerforeachquestion.(3pointseach)6.Accordingtothepassage,whathappenstocropyieldswhentemperaturesrisebeyondoptimalranges?A.TheyremainstableB.TheyincreasesignificantlyC.TheytendtodeclineD.Theyfluctuateunpredictably7.Whatisoneconsequenceofincreasedrainfallandfloodingmentionedinthepassage?A.ImprovedsoilfertilityB.DamagetocropsandsoilerosionC.EnhancedcropgrowthD.Reducedneedforirrigation8.Whatcausedthe$3billioninagriculturallossesintheUnitedStatesin2019?A.DroughtconditionsB.ExtremeheatC.MidwestfloodsD.Pestsanddiseases9.Howisclimatechangeaffectingpestsanddiseasesaccordingtothepassage?A.ReducingtheirsurvivalratesB.LimitingtheirgeographicaldistributionC.AllowingthemtosurvivewintersmoreeasilyD.Decreasingtheirimpactoncrops10.Whatisoneadaptationstrategymentionedinthepassagetohelpagriculturecopewithclimatechange?A.ReducingcropdiversityB.Developingclimate-resilientcropvarietiesC.IncreasingpesticideuseD.Limitingwatermanagementsystems二、完形填空（20分）1.词汇填空（10分）Readthefollowingpassageandfillineachblankwiththemostappropriatewordfromthebox.Eachwordcanbeusedonlyonce.(2pointseach)A.adaptB.challengeC.solutionsD.impactE.reduceF.sustainableG.resourcesH.urgentI.addressJ.balanceClimatechangeisoneofthemostpressingissuesofourtime.Its(11)______onourplanetisbecomingincreasinglyevident,withrisingtemperatures,extremeweatherevents,andmeltingicecaps.Tomitigatetheseeffects,wemustfindinnovative(12)______thatallowusto(13)______ourcarbonfootprintwhilemaintainingeconomicdevelopment.Thisrequiresadelicate(14)______betweenenvironmentalprotectionandhumanneeds.Itisan(15)______matterthatwe(16)______immediately,asthewindowforeffectiveactionisclosing.Wemustlearnto(17)______tochangingconditionswhilepreservingournatural(18)______.Thetransitiontoamore(19)______futureispossible,butitrequirescommitmentfromindividuals,businesses,andgovernmentsalike.Onlythroughcollectiveeffortcanwehopeto(20)______theworsteffectsofclimatechange.2.语法填空（10分）Readthefollowingpassageandfillineachblankwiththeappropriateformofthewordgiveninparentheses.(2pointseach)Therapidadvancementoftechnology(21)______(transform)nearlyeveryaspectofmodernlife.Overthepastdecade,we(22)______(witness)anunprecedentedaccelerationindigitalinnovation.Smartphones,which(23)______(be)onceluxuryitems,havenowbecomeessentialtoolsforcommunication,work,andentertainment.Socialmediaplatforms(24)______(connect)peopleacrosstheglobe,creatingnewformsofcommunityandinteraction.Whilethesetechnologicaldevelopments(25)______(bring)numerousbenefits,they(26)______(alsocreate)significantchallenges.Privacyconcernshaveemergedaspersonaldata(27)______(collect)andanalyzedbycorporationsandgovernments.Thedigitaldivide(28)______(widen)asaccesstotechnologyremainsunequalamongdifferentsocioeconomicgroups.Lookingahead,expertspredictthatartificialintelligence(29)______(play)anincreasinglyimportantroleinourlives.However,theethicalimplicationsoftheseadvances(30)______(require)carefulconsiderationandregulation.三、语法与词汇（20分）1.单项选择（10分）Choosethebestanswertocompleteeachsentence.(2pointseach)31.Bythetimewearrivedatthetheater,themovie______fortwentyminutes.A.hadbeenrunningB.hasrunC.wasrunningD.hadrun32.IfI______you,Iwouldaccepttheirofferimmediately.A.amB.wasC.wereD.havebeen33.Notonly______theimportanceofeducation,butshealsoactivelyvolunteersatlocalschools.A.sherecognizesB.doessherecognizeC.shedoesrecognizeD.recognizesshe34.Theprofessor,alongwithhisassistants,______workingontheresearchprojectforoverayear.A.havebeenB.hasbeenC.areD.isbeing35.Itisessentialthateveryone______presentatthemeetingtomorrow.A.willbeB.beC.isD.were36.IwishI______speakFrenchfluently;itwouldmaketravelingmucheasier.A.canB.couldC.willbeabletoD.amableto37.Thegovernmenthasimplementednewmeasuresto______thespreadofthevirus.A.containB.containmentC.containedD.containing38.Despitetheheavyrain,thefootballmatch______asscheduled.A.willproceedB.proceededC.proceedsD.hasproceeded39.ThisisthefirsttimeI______suchadeliciousmeal.A.haveB.hadC.amhavingD.havehad40.Hadheknownaboutthetrafficjam,he______earlier.A.wouldhaveleftB.wouldleaveC.willleaveD.leaves2.词汇辨析（10分）Choosethewordorphrasethatbestcompletesthesentence.(2pointseach)41.Thecommitteereacheda______afterhoursofdiscussion.A.conclusionB.inclusionC.exclusionD.confusion42.Herspeechwasso______thattheaudiencewascaptivatedthroughout.A.tediousB.boringC.fascinatingD.dull43.Thenewregulationswillhaveasignificant______onhowthecompanyoperates.A.affectB.effectC.effectiveD.affecting44.Itis______toarriveattheairportatleasttwohoursbeforeyourflight.A.adviseB.advisableC.adviceD.advisory45.Thediscoveryofpenicillinwasa______breakthroughinmedicalscience.A.historicalB.historicC.historyD.historian46.Thecompanyneedsto______itsoperationstoremaincompetitiveintheglobalmarket.A.diverseB.diversifyC.diversityD.diversification47.Theevidenceagainsthimwas______,leavingnoroomfordoubt.A.conclusiveB.conclusionC.concludeD.concluding48.Shehasanatural______forlanguagesandspeaksfivefluently.A.abilityB.talentC.aptitudeD.capacity49.Theeconomiccrisishasledtowidespread______inthecountry.A.unemploymentB.employmentC.employD.employable50.Themuseumhasanimpressive______ofancientartifactsfromdifferentcivilizations.A.collectionB.collectiveC.collectD.collector四、翻译（20分）1.英译中（10分）TranslatethefollowingsentencesintoChinese.(5pointseach)51.Therapidadvancementofartificialintelligencehastransformednumerousindustries,creatingbothopportunitiesandchallengesforworkersinthedigitalage.52.Despitefacingnumerousobstacles,theresearchteamperseveredandeventuallymadeagroundbreakingdiscoverythatcouldrevolutionizerenewableenergytechnology.2.中译英（10分）TranslatethefollowingsentencesintoEnglish.(5pointseach)53.气候变化是全球面临的重大挑战，需要各国共同努力来减缓其影响。54.传统文化在现代社会中仍然发挥着重要作用，它不仅丰富了人们的精神生活，还促进了文化多样性的发展。五、写作（10分）1.图表作文（5分）Thechartbelowshowsthepercentageofrenewableenergysourcesintotalenergyconsumptioninfourcountriesfrom2010to2020.Writeacompositionofabout120wordstodescribethechanges.(5points)[图表描述：柱状图显示2010年和2020年四个国家（中国、美国、德国、巴西）在总能源消耗中可再生能源的百分比。2010年：中国10%，美国8%，德国15%，巴西35%。2020年：中国25%，美国12%，德国30%，巴西40%。]2.议论文写作（5分）Writeacompositionofabout150wordsonthefollowingtopic:"Theimportanceoflifelonglearninginthe21stcentury."(5points)答案及解析一、阅读理解（30分）1.篇章阅读理解（15分）1.B。根据文章第一段和第二段，"Communicationhasperhapsbeenthemostvisiblytransformedarea"（通信可能是变革最明显的领域）。选项A、C、D虽然也被提及为被数字革命改变的区域，但文章明确指出通信是最明显被变革的领域。干扰项分析：A.医疗保健确实被改变，但不是最明显的；C.教育被改变，但不是最明显的；D.工作场所被改变，但不是最明显的。2.B。根据文章第二段，"ithasalsoraisedconcernsaboutprivacy,informationoverload,andthequalityofourrelationshipsinanincreasinglydigitalworld"（它也引发了人们对隐私、信息过载和日益数字化的世界中人际关系质量的担忧）。隐私问题是明确提到的数字通信的主要担忧之一。干扰项分析：A.技术访问受限是数字鸿沟的问题，不是数字通信的具体担忧；C.缺乏教育内容与文章无关；D.网络连接质量差不是文章中提到的具体担忧。3.B。根据文章第三段，"Traditionalofficeenvironmentsarebeingredefinedasremoteworkbecomesincreasinglyviable"（随着远程工作变得越来越可行，传统办公环境正在被重新定义）。数字技术使远程工作更加可行是工作场所被改变的方式之一。干扰项分析：A.文章没有提到要求员工工作更长时间；C.文章没有说消除实体办公室的需求；D.文章没有说减少可用工作岗位的数量，而是提到技术变革可能创造新的就业机会。4.A。根据文章第四段，"Onlinecourses,educationalapps,anddigitallibrarieshavemadeknowledgeavailabletoanyonewithaninternetconnection,regardlessoftheirlocationorsocioeconomicbackground"（在线课程、教育应用程序和数字图书馆使任何有互联网连接的人都能获取知识，无论其位置或社会经济背景）。数字技术使教育不受地理位置限制是提到的益处之一。干扰项分析：B.文章没有提到减少教师工作量；C.虽然数字资源可能减少对某些实体教材的需求，但这不是明确提到的益处；D.文章没有提到标准化考试成绩提高。5.C。根据文章最后一段，"Emergingtechnologiessuchasquantumcomputing,advancedartificialintelligence,andtheInternetofThingspromisetofurthertransformourworld"（量子计算、先进人工智能和物联网等新兴技术有望进一步改变我们的世界）。文章明确提到量子计算和先进人工智能是未来的技术发展。干扰项分析：A.文章暗示技术变革将继续加速，而不是减慢；B.文章没有说未来的技术将主要专注于娱乐应用；D.文章没有说未来的技术将减少对互联网连接的需求。2.细节理解题（15分）6.C。根据文章第二段，"Astemperaturesrisebeyondtheseoptimalranges,cropyieldstendtodecline"（当温度超过这些最佳范围时，作物产量往往会下降）。文章明确指出，当温度超过最佳范围时，作物产量倾向于下降。干扰项分析：A.文章明确指出产量不会保持稳定；B.文章指出产量会下降而不是增加；D.文章提到产量会下降，而不是不可预测地波动。7.B。根据文章第三段，"Someregionsareexperiencingincreasedrainfallandflooding,whichcandamagecropsandleadtosoilerosion"（一些地区正在经历更多的降雨和洪水，这可能损坏作物并导致土壤侵蚀）。文章明确指出，降雨和增加的洪水可能损坏作物并导致土壤侵蚀。干扰项分析：A.文章没有说增加的降雨会改善土壤肥力；C.文章没有说增加的降雨会增强作物生长；D.虽然增加的降雨可能减少灌溉需求，但这不是文章中提到的后果。8.C。根据文章第四段，"the2019MidwestfloodsintheUnitedStatescausedanestimated$3billioninagriculturallosses"（2019年美国中西部洪水估计造成了30亿美元的农业损失）。文章明确指出，2019年中西部洪水造成了30亿美元的农业损失。干扰项分析：A.干旱条件没有被提及为造成30亿美元损失的原因；B.极端热没有被提及为造成30亿美元损失的原因；D.害虫和疾病没有被提及为造成30亿美元损失的原因。9.C。根据文章第五段，"Warmertemperaturesallowpeststosurvivewintersmoreeasilyandexpandtheirgeographicalrange"（较高的温度使害虫更容易越冬并扩大其地理范围）。文章明确指出，气候变化使害虫更容易越冬。干扰项分析：A.文章指出气候变化提高了害虫的生存率，而不是降低；B.文章指出气候变化扩大了害虫的地理分布，而不是限制；D.文章没有说气候变化减少了害虫对作物的影响，而是暗示影响可能增加。10.B。根据文章最后一段，"Theseincludedevelopingclimate-resilientcropvarietiesthroughtraditionalbreedingandgeneticmodification"（这些包括通过传统育种和基因开发具有气候适应性的作物品种）。文章明确提到开发具有气候适应性的作物品种是帮助农业适应气候变化的策略之一。干扰项分析：A.文章提到多样化农业系统以减少对特定气候压力的脆弱性，而不是减少作物多样性；C.文章没有说增加农药使用是适应策略，实际上暗示这可能带来环境和经济后果；D.文章提到实施更高效的水管理系统，而不是限制水管理系统。二、完形填空（20分）1.词汇填空（10分）11.D。根据上下文，这里需要一个词表示"影响"，"impact"是最合适的选项。12.C。根据上下文，这里需要一个词表示"解决方案"，"solutions"是最合适的选项。13.A。根据上下文，这里需要一个词表示"适应"，"adapt"是最合适的选项。14.J。根据上下文，这里需要一个词表示"平衡"，"balance"是最合适的选项。15.H。根据上下文，这里需要一个词表示"紧急的"，"urgent"是最合适的选项。16.I。根据上下文，这里需要一个词表示"处理"，"address"是最合适的选项。17.A。根据上下文，这里需要一个词表示"适应"，"adapt"是最合适的选项。18.G。根据上下文，这里需要一个词表示"资源"，"resources"是最合适的选项。19.F。根据上下文，这里需要一个词表示"可持续的"，"sustainable"是最合适的选项。20.B。根据上下文，这里需要一个词表示"挑战"，"challenge"是最合适的选项。2.语法填空（10分）21.hastransformed。根据时间状语"Overthepastdecade"（在过去十年里），应该使用现在完成时。22.havewitnessed。根据时间状语"Overthepastdecade"（在过去十年里），主语"we"是复数，应该使用现在完成时。23.were。根据上下文，这里需要一个过去时态的动词，表示"曾经是"，"were"是最合适的。24.haveconnected。根据上下文，这里需要一个现在完成时态的动词，表示社交媒体平台已经将人们连接起来，"haveconnected"是最合适的。25.havebrought。根据上下文，这里需要一个现在完成时态的动词，表示技术发展已经带来了许多好处，"havebrought"是最合适的。26.havealsocreated。根据上下文，这里需要一个现在完成时态的动词，表示技术发展也创造了重大挑战，"havealsocreated"是最合适的。27.arecollected。根据上下文，这里需要一个被动语态的动词，表示个人数据被收集和分析，"arecollected"是最合适的。28.haswidened。根据上下文，这里需要一个现在完成时态的动词，主语"Thedigitaldivide"是单数，"haswidened"是最合适的。29.willplay。根据上下文，这里需要一个将来时态的动词，表示人工智能将在我们的生活中发挥越来越重要的作用，"willplay"是最合适的。30.require。根据上下文，这里需要一个动词原形，因为"implications"是"require"的主语，使用虚拟语气，"require"是最合适的。三、语法与词汇（20分）1.单项选择（10分）31.A。根据"Bythetime"引导的时间状语从句，主句应该使用过去完成时态。"hadbeenrunning"表示电影已经运行了二十分钟。32.C。在虚拟条件句中，与现在事实相反的假设，if从句中使用过去时态，主句使用would/could/might+动词原形。因此，"IfIwereyou"是正确的表达。33.B。当"Notonly"位于句首时，需要使用部分倒装结构，即将助动词放在主语前面。"doessherecognize"是正确的表达。34.B。当主语后面有"alongwith"引导的短语时，谓语动词的形式与主语保持一致。这里主语"Theprofessor"是单数，所以应该使用"hasbeen"。35.B。在"Itisessentialthat..."结构中，that从句使用虚拟语气，动词使用原形。"bepresent"是正确的表达。36.B。在"Iwish"后面的从句中，表示与现在事实相反的假设，使用过去时态。"couldspeak"是正确的表达。37.A。这里需要一个动词原形，因为"to"后面应该接动词原形。"contain"是正确的表达。38.B。根据时间状语"Despitetheheavyrain"（尽管下着大雨），主句应该使用一般过去时，表示足球比赛确实按计划进行了。"proceeded"是正确的表达。39.D。在"Thisisthefirsttime"结构中，后面的从句使用现在完成时。"havehad"是正确的表达。40.A。在"Hadheknown..."（与过去事实相反的虚拟条件句）结构中，主句使用"would/could/might+have+过去分词"。"wouldhaveleft"是正确的表达。2.词汇辨析（10分）41.A。"conclusion"表示"结论"，符合句意，委员会经过讨论得出了结论。42.C。"fascinating"表示"迷人的，吸引人的"，符合句意，她的演讲非常迷人，让观众着迷。43.B。"effect"作为名词表示"影响"，符合句意，新法规将对公司运营产生重大影响。44.B。"advisable"表示"可取的，明智的"，符合句意，建议至少在航班前两小时到达机场。45.B。"historic"表示"历史上著名的，有历史意义的"，符合句意，青霉素的发现是医学科学历史上的重大突破。46.B。"diversify"作为动词表示"使多样化"，符合句意，公司需要使其运营多样化以保持全球