统考版高考英语一轮复习限时提分练二十三必修⑤Unit3Lifeinthefuture含解析

一轮复习精品资料(高中)PAGE1-限时提分练(二十三)必修⑤Unit3LifeinthefutureⅠ.阅读理解A〖2021·广州市综合检测二〗Specialboxeslieatthebottomofmylockedfilingcabinet.Depositedthereareimportantlettersandcardscollectedthroughoutmylife,frommygrandparents,schoolfriends,parents,wifeandson.Sincetheinventionofe­mailthough,they'vebeenfewandfarbetween.TonightisNewYear'sEve2029andthere'saveryspecialboxoflettersIwanttolookat.Butfirstthere'ssomethingIhavetodo—TheRitual(惯例)．Igotomytrustedcomputerandstart.Ibegintotype:Dear—Ileavethenameblankfornow,anticipatingthethrilloftypingitin.“IhopeyouarewellandIwonderwhatyourlifeislike.AreyoustillplanningtomovetothatvillainPortugal?DidyoursonmarryFiona?Isyourmotherstillalive？”Questionssurgeintomymind.ForthenexttwohoursIsitwriting—aboutwhatI'vebeendoingforthelastyear,myfailinghealth,myincreasingwealthandmysometimedifficultmarriage;thenaboutmygoalsandambitions.Willhebeinterested?DoIclimbMt.Kilimanjaro?DoIgetthatnovelpublished?Theonethat'sbeenrejectedmoretimesthanIcaretothinkabout.Finally,it'sfinishedat11：30pm.Ifillintherecipient'sname,printmyletter,signandaddressitandthensealitupwithtape.Ithendeletethedocumentandemptythetrashfolder—toavoidthepossibilityoftemptation.Thatcompletestheritual!Iwalkovertomy“specialbox”.Itcontainstenlong,white,thickenvelopes,allwiththesamehandwriting.IplacetheoneIhavejustwritteninatthebackandtaketheoneoutatthefront.It'sdated2019,andlabelled“tobeopenedon31stDecember,2029”.Thecycleisfinallycomplete!Iopenit,tremblingwithanticipation.Ibegintoread,tearingupalittleasIdoso.Throughoutthelasttenlong,eventfulyears,oflife,death,joyandheartbreak,ithasbeenwaitingpatientlyinthisboxforme,thoughInowhavenomemoryofeverhavingwrittenit.1.Whydoestheauthorreceivefewer“importantletters”thesedays?A．Hehasmovedfromhisoriginaladdress.B．Heisrarelyincontactwithhisfriendsandfamily.C．Peoplecommunicatewitheachotherlessoftenthanbefore.D．Electroniccommunicationhaslargelyreplacedphysicalletters.2．Whodoestheunderlinedword“he”inParagraph4referto?A．Theauthorhimself.B．Theauthor'sson.C．Theauthor'sschoolfriend.D．Theauthor'sbookpublisher.3．Whydoestheauthordeletethecompletedletterfromhiscomputer?A．Sothatnooneelsewillbeabletoreadit.B．Sothathewon'treaditaheadofschedule.C．Becausehedecidesatlastnottosendit.D．Becausehewantstoforgetwhathashappened.4．Howdoestheauthorfeelasheisabouttoopenhisspecialletter?A．Relieved. B．Moved.C．Excited. D．Afraid.B〖2021·河北省高三六校第一次联考〗Anagelessquestion:Whenissomeone“old”？Whatdoes“old”reallymeanthesedays?Thisisn'tameaninglessquestion—notonlydoesthedefinitionof“old”haveanoutsizedimpactonhowwefeelaboutourselves(nottomentionhowothersviewus),italsomatterstopolicymakersdetermininghowtoplanforagingpopulations.TheUnitedNationshistoricallyhasdefinedolderpersonsaspeople60yearsoldorover(sometimes65).Itdoesn'tmatterwhetheryoulivedintheUnitedStates,ChinaorSenegal,eventhoughlifeexpectancyisquitedifferentineachofthosecountries.Everyonebecomesoldat60.ResearchersSergeiScherbovandWarrenSanderson,whostudyaging,aresuggestingoverturningtheone­size­fits­alldefinitionof“old”.Instead,theytalkabout“prospective_age”，whichlookstothefuture.Everyonewiththesameprospectiveagehasthesameexpectedremainingyearsoflife.Scherbovexplainedthat“young”and“old”arerelativeconcepts,andtheircommonreferencepointislifeexpectancy.Andthat“old”wouldvarybetweennationsmakessense,especiallybetweenmoreandlessdevelopedcountries,withdifferencesineducation,deathrates,accesstohealthcareandlifeexpectancy.Butwhois“old”alsovaries—widely—betweenindividuals.Thepoint,saysScherbov,isthatpersonalageisdependentonour“characteristics”—understandingabilities,disability,healthhistoryandeveneducationlevels.Thosewithmoreeducationtendnottosmoke,exercisemorefrequently,havebetterdietsandhaveregularcheckups—and,therefore,livelonger,meaningthebeginningoftheiroldagecomeslater,saysScherbov.5．Whatisthefirstparagraphmainlyabout?A．Howwefeelaboutourselves?B．Thedefinitionof“old”．C．Theimportanceofthedefinitionof“old”．D．Theplanforagingpopulations.6．Whatdoestheunderlinedphrase“prospectiveage”inParagraph3refertoaccordingtothetext?A．Theexpectedremainingyearsofone'slife.B．Thebeginningofone'soldage.C．Thedifferencesofour“characteristics”．D．Theagewhenonebecomesold.7．WhatsimilaritydoesScherbovthink“young”and“old”have?A．Understandingabilities.B．Nations.C．Education.D．Thereferencepoint.8．WhichofthefollowinghelpsonetolivelongeraccordingtoScherbov?A．Doingasmuchexerciseaspossible.B．Losingweight.C．Studyinghistory.D．Improvingtheeducationlevel.Ⅱ.完形填空〖2021·福州市高中毕业班质量检测〗Berry,aged7,becametheyoungestmemberofHungerFreeColorado,acharityhelpingto__1__hungerthroughoutthestate.Berryfirstbecame__2__ofpeoplegoinghungrywhenhesawamanatastoplightholdinga__3__askingforhelp.Hewas__4__thatthemandidn'thaveenoughmoneytobuyfood,soheandhismomlookedonlinefora(n)__5__.TheydiscoveredHungerFreeColorado.__6__bythegroup'smission,Berrydecidedto__7__moneyforthehungry.Berryorganizedkids'clubmeetingsathishouse,__8__hisfriendstohelp.Atoneoftheirfirstgatherings,Berryandhisfriendsmadepettreatjarsto__9__intheirarea.Later,theyranadoughnutandlemonade__10__thatalsoofferedcoffee,icepopsandcookies.Moreevents__11__.Theclubhostedaneighborhoodmovienight.__12__theyarrangedamovienightattheirschool.Theytoldthe__13__of75childrenhowtheeventwould__14__peopleinhunger.Berryrantheeventfrombeginningtoend,__15__makingsurethateverythingwascleanedupandbackto__16__afterward.Berrycontinuedtoholdmeetingsand__17__moreevents.Hesaidthe__18__tofund­raisingistofindwhatmostpeoplelike.Sofar,Berry'sclubhascollectedmorethan$8,000forHungerFreeColorado.Berrylikeshelpingpeopleandgettingotherkids__19__.Berryisproofthateveryonecanmakea(n)__20__bydoingwhathecantohelpothers.1．A.find B．endC．refuse D．attach2．A.fond B．afraidC．aware D．shamed3．A.letter B．photoC．parcel D．sign4．A.upset B．discouragedC．disappointed D．frightened5．A.purpose B．solutionC．advantage D．distribution6．A.Managed B．PraisedC．Respected D．Inspired7．A.earn B．payC．save D．raise8．A.callingon B．ringingupC．searchingfor D．thinkingabout9．A.buy B．sellC．deliver D．collect10．A.club B．officeC．stand D．base11．A.developed B．existedC．followed D．entered12．A.So B．ThenC．But D．Yet13．A.crowd B．numberC．most D．part14．A.organize B．requireC．unite D．benefit15．A.trying B．practicingC．including D．considering16．A.order B．normalC．nature D．balance17．A.plan B．attendC．discover D．introduce18．A.attitude B．commitmentC．devotion D．key19．A.involved B．concernedC．settled D．impressed20．A.judgment B．decisionC．difference D．evidence

限时提分练(二十三)Ⅰ.阅读理解A语篇类型：记叙文主题语境：人与自我——生活——写给未来的自己的信〖语篇解读〗在2029年的除夕，在阅读自己2019年写给自己的信之前，“我”必须给未来的自己再写一封信。在信中，“我”写到了健康、财富、婚姻等，写完后，“我”阅读了2019年写给自己的信……1．〖答案〗与〖解析〗D考查细节理解。根据第一段尾句“Sincetheinventionofe­mailthough，they'vebeenfewandfarbetween”可知，由于电子邮件的发明，作者收到的信件少了，故D项正确。2．〖答案〗与〖解析〗A考查代词指代。根据全文内容尤其是最后一段中的“thoughInowhavenomemoryofeverhavingwrittenit”可推知，作者是在给未来的自己写信，该句中的he指作者自己，故A项正确。3．〖答案〗与〖解析〗B考查推理判断。根据第五段第三句“Ithendeletethedocumentandemptythetrashfolder—toavoidthepossibilityoftemptation”可知，作者删除了文件并清空了垃圾文件夹以避免可能的诱惑；结合下文中作者阅读2019年写给自己的信可以推断，作者删除文件是为了防止自己禁不住诱惑提前阅读信件，故B项正确。4．〖答案〗与〖解析〗C考查推理判断。根据最后一段第二句“Iopenit，tremblingwithanticipation”可知，作者在打开信时，因为期待而颤抖。由此可推知，作者在打开信时内心很激动，故C项正确。B语篇类型：说明文主题语境：人与社会——健康——何为“老”〖语篇解读〗“一个人什么时候变老”是个永恒的问题，本文就此介绍了相关的研究情况。5．〖答案〗与〖解析〗C考查主旨大意。根据第一段第二句中的“notonlydoesthedefinitionof‘old’．..foragingpopulations”可知，本段主要讲的是对“老”的定义的重要性。故选C。6．〖答案〗与〖解析〗A考查细节理解。根据第三段最后一句“Everyonewiththesameprospectiveagehasthesameexpectedremainingyearsoflife”并结合语境可推知，prospectiveage即Theexpectedremainingyearsofone'slife。故选A。7．〖答案〗与〖解析〗D考查细节理解。根据第四段第一句中的“theircommonreferencepointislifeexpectancy”可知，“年轻”和“年老”的共同参照标准是预期寿命。故选D。8．〖答案〗与〖解析〗D考查推理判断。根据最后一段最后一句中的“Thosewithmoreeducationtendnottosmoke,exercisemorefrequently,havebetterdietsandhaveregularcheckups—and,therefore,livelonger”可知，受教育更多的人活得更长。由此可推知，提高受教育水平有助于一个人活得更长。故选D。Ⅱ.完形填空语篇类型：记叙文主题语境：人与社会——帮助他人——为饥饿的人筹款〖语篇解读〗七岁的Berry成了一个旨在消除饥饿的慈善机构的最小的成员，他在自己家里组织了儿童俱乐部会议，号召他的朋友们去提供帮助，并通过经营摊位和组织活动等已成功地为该机构筹集了8000多美元。1．〖答案〗与〖解析〗B根据空前的“HungerFreeColorado”并结合下文内容可推知，这个慈善机构旨在帮助结束本州的饥饿状况。故选B。D项意为“把……附(在……上)”。2．〖答案〗与〖解析〗CBerry看到一个饥饿的人举着牌子(sign)寻求帮助时，他第一次意识到了有人食不果腹的状况。3．〖答案〗与〖解析〗D参见上题〖解析〗。4．〖答案〗与〖解析〗A根据下文Berry努力为饥饿的人筹款并结合常识可知，Berry看到那个人没有足够多的钱去买吃的，他很难过。upset“难过”。5．〖答案〗与〖解析〗B根据语境并结合上题〖解析〗可知，Berry和妈妈就开始在网上寻求(饥饿问题的)解决办法，与下句“TheydiscoveredHungerFreeColorado”相呼应。solution“解决办法”；distribution“分发，分配，分布”。6．〖答案〗与〖解析〗D根据该句中的“Berrydecidedto__7__moneyforthehungry”可知，Berry被这个慈善机构的使命所激励，决定去为那些饥饿的人们筹钱。7．〖答案〗与〖解析〗D参见上题〖解析〗。此处与下文中的“fund­raising”“hascollectedmorethan$8,000forHungerFreeColorado”相呼应。raise“筹募”。8．〖答案〗与〖解析〗ABerry在自己家里组织了儿童俱乐部会议，号召他的朋友们去提供帮助。callon“号召”；ringup“打电话”。9．〖答案〗与〖解析〗B根据上文讲述的Berry决定为饥饿的人筹钱并结合下一句可知，他们后来还经营了一个卖甜甜圈和柠檬汽水的摊位，并提供咖啡、冰棒和曲奇饼干。由此可推知，此处表示Berry和他的朋友们把自己做的东西拿去售卖以筹钱。10．〖答案〗与〖解析〗C参见上题〖解析〗。stand“货摊”。11．〖答案〗与〖解析〗C根据下文可知，Berry组织的俱乐部还做了许多其他的事情。follow“在……后发生”符合语境。12．〖答案〗与〖解析〗B空前一句表述该俱乐部举办了社区电影夜，空后表述他们在学校也安排了电影夜活动。由此可知，上下句表示逻辑上的顺承关系。then“然后，接着”符合语境。13．〖答案〗与〖解析〗A75个儿童属于一个群体，因此选A。crowd“人群”。14．〖答案〗与〖解析〗D根据上文“Berrydecidedto__7__moneyforthehungry”和“Berryorganizedkids'clubmeetingsathishouse,__8__hisfriendstohelp”可推知，Berry所做的事情是为了给那些饥饿的人提供帮助，使他们受益。故选D。C项意为“联结，联合”。15．〖答案〗与〖解析〗C根据该句中的“Berryrantheeventfrombeginningtoend”可知，Berry从头到尾管理这一事项，且空后介绍了其中的一个细节。由此可推知，此处表示包括的含义。16．〖答案〗与〖解析〗B此处表示“恢复常态”，与空后的“afterward”和空前的“everythingwascleanedup”相呼应。17．〖答案〗与〖解析〗A根据上文中的“Berryorganizedkids'clubmeetingsathishouse”可推知，Berry是活动的组织人和策划人，此处表示Berry继续组织会议并策划更多的活动。18．〖答案〗与〖解析〗D根据该句中的“findwhatmostpeoplelike”并结合语境和选项可推知，此处表示筹钱的关键所在。commitment“承诺，奉献”；devotion“奉献”；key“关键”。19．〖答案〗与〖解析〗A根据上文中的“Berryorganizedkids'clubmeetingsathishouse,__8__hisfriendstohelp”可推知，此处表示Berry想让其他的孩子也参与其中，帮助他人。20．〖答案〗与〖解析〗C根据上文内容可知，Berry就是一个很好的例子，证明了每一个人都可以做其力所能及之事来帮助他人，从而有所影响。makeadifference“有影响”。限时提分练(二十三)必修⑤Unit3LifeinthefutureⅠ.阅读理解A〖2021·广州市综合检测二〗Specialboxeslieatthebottomofmylockedfilingcabinet.Depositedthereareimportantlettersandcardscollectedthroughoutmylife,frommygrandparents,schoolfriends,parents,wifeandson.Sincetheinventionofe­mailthough,they'vebeenfewandfarbetween.TonightisNewYear'sEve2029andthere'saveryspecialboxoflettersIwanttolookat.Butfirstthere'ssomethingIhavetodo—TheRitual(惯例)．Igotomytrustedcomputerandstart.Ibegintotype:Dear—Ileavethenameblankfornow,anticipatingthethrilloftypingitin.“IhopeyouarewellandIwonderwhatyourlifeislike.AreyoustillplanningtomovetothatvillainPortugal?DidyoursonmarryFiona?Isyourmotherstillalive？”Questionssurgeintomymind.ForthenexttwohoursIsitwriting—aboutwhatI'vebeendoingforthelastyear,myfailinghealth,myincreasingwealthandmysometimedifficultmarriage;thenaboutmygoalsandambitions.Willhebeinterested?DoIclimbMt.Kilimanjaro?DoIgetthatnovelpublished?Theonethat'sbeenrejectedmoretimesthanIcaretothinkabout.Finally,it'sfinishedat11：30pm.Ifillintherecipient'sname,printmyletter,signandaddressitandthensealitupwithtape.Ithendeletethedocumentandemptythetrashfolder—toavoidthepossibilityoftemptation.Thatcompletestheritual!Iwalkovertomy“specialbox”.Itcontainstenlong,white,thickenvelopes,allwiththesamehandwriting.IplacetheoneIhavejustwritteninatthebackandtaketheoneoutatthefront.It'sdated2019,andlabelled“tobeopenedon31stDecember,2029”.Thecycleisfinallycomplete!Iopenit,tremblingwithanticipation.Ibegintoread,tearingupalittleasIdoso.Throughoutthelasttenlong,eventfulyears,oflife,death,joyandheartbreak,ithasbeenwaitingpatientlyinthisboxforme,thoughInowhavenomemoryofeverhavingwrittenit.1.Whydoestheauthorreceivefewer“importantletters”thesedays?A．Hehasmovedfromhisoriginaladdress.B．Heisrarelyincontactwithhisfriendsandfamily.C．Peoplecommunicatewitheachotherlessoftenthanbefore.D．Electroniccommunicationhaslargelyreplacedphysicalletters.2．Whodoestheunderlinedword“he”inParagraph4referto?A．Theauthorhimself.B．Theauthor'sson.C．Theauthor'sschoolfriend.D．Theauthor'sbookpublisher.3．Whydoestheauthordeletethecompletedletterfromhiscomputer?A．Sothatnooneelsewillbeabletoreadit.B．Sothathewon'treaditaheadofschedule.C．Becausehedecidesatlastnottosendit.D．Becausehewantstoforgetwhathashappened.4．Howdoestheauthorfeelasheisabouttoopenhisspecialletter?A．Relieved. B．Moved.C．Excited. D．Afraid.B〖2021·河北省高三六校第一次联考〗Anagelessquestion:Whenissomeone“old”？Whatdoes“old”reallymeanthesedays?Thisisn'tameaninglessquestion—notonlydoesthedefinitionof“old”haveanoutsizedimpactonhowwefeelaboutourselves(nottomentionhowothersviewus),italsomatterstopolicymakersdetermininghowtoplanforagingpopulations.TheUnitedNationshistoricallyhasdefinedolderpersonsaspeople60yearsoldorover(sometimes65).Itdoesn'tmatterwhetheryoulivedintheUnitedStates,ChinaorSenegal,eventhoughlifeexpectancyisquitedifferentineachofthosecountries.Everyonebecomesoldat60.ResearchersSergeiScherbovandWarrenSanderson,whostudyaging,aresuggestingoverturningtheone­size­fits­alldefinitionof“old”.Instead,theytalkabout“prospective_age”，whichlookstothefuture.Everyonewiththesameprospectiveagehasthesameexpectedremainingyearsoflife.Scherbovexplainedthat“young”and“old”arerelativeconcepts,andtheircommonreferencepointislifeexpectancy.Andthat“old”wouldvarybetweennationsmakessense,especiallybetweenmoreandlessdevelopedcountries,withdifferencesineducation,deathrates,accesstohealthcareandlifeexpectancy.Butwhois“old”alsovaries—widely—betweenindividuals.Thepoint,saysScherbov,isthatpersonalageisdependentonour“characteristics”—understandingabilities,disability,healthhistoryandeveneducationlevels.Thosewithmoreeducationtendnottosmoke,exercisemorefrequently,havebetterdietsandhaveregularcheckups—and,therefore,livelonger,meaningthebeginningoftheiroldagecomeslater,saysScherbov.5．Whatisthefirstparagraphmainlyabout?A．Howwefeelaboutourselves?B．Thedefinitionof“old”．C．Theimportanceofthedefinitionof“old”．D．Theplanforagingpopulations.6．Whatdoestheunderlinedphrase“prospectiveage”inParagraph3refertoaccordingtothetext?A．Theexpectedremainingyearsofone'slife.B．Thebeginningofone'soldage.C．Thedifferencesofour“characteristics”．D．Theagewhenonebecomesold.7．WhatsimilaritydoesScherbovthink“young”and“old”have?A．Understandingabilities.B．Nations.C．Education.D．Thereferencepoint.8．WhichofthefollowinghelpsonetolivelongeraccordingtoScherbov?A．Doingasmuchexerciseaspossible.B．Losingweight.C．Studyinghistory.D．Improvingtheeducationlevel.Ⅱ.完形填空〖2021·福州市高中毕业班质量检测〗Berry,aged7,becametheyoungestmemberofHungerFreeColorado,acharityhelpingto__1__hungerthroughoutthestate.Berryfirstbecame__2__ofpeoplegoinghungrywhenhesawamanatastoplightholdinga__3__askingforhelp.Hewas__4__thatthemandidn'thaveenoughmoneytobuyfood,soheandhismomlookedonlinefora(n)__5__.TheydiscoveredHungerFreeColorado.__6__bythegroup'smission,Berrydecidedto__7__moneyforthehungry.Berryorganizedkids'clubmeetingsathishouse,__8__hisfriendstohelp.Atoneoftheirfirstgatherings,Berryandhisfriendsmadepettreatjarsto__9__intheirarea.Later,theyranadoughnutandlemonade__10__thatalsoofferedcoffee,icepopsandcookies.Moreevents__11__.Theclubhostedaneighborhoodmovienight.__12__theyarrangedamovienightattheirschool.Theytoldthe__13__of75childrenhowtheeventwould__14__peopleinhunger.Berryrantheeventfrombeginningtoend,__15__makingsurethateverythingwascleanedupandbackto__16__afterward.Berrycontinuedtoholdmeetingsand__17__moreevents.Hesaidthe__18__tofund­raisingistofindwhatmostpeoplelike.Sofar,Berry'sclubhascollectedmorethan$8,000forHungerFreeColorado.Berrylikeshelpingpeopleandgettingotherkids__19__.Berryisproofthateveryonecanmakea(n)__20__bydoingwhathecantohelpothers.1．A.find B．endC．refuse D．attach2．A.fond B．afraidC．aware D．shamed3．A.letter B．photoC．parcel D．sign4．A.upset B．discouragedC．disappointed D．frightened5．A.purpose B．solutionC．advantage D．distribution6．A.Managed B．PraisedC．Respected D．Inspired7．A.earn B．payC．save D．raise8．A.callingon B．ringingupC．searchingfor D．thinkingabout9．A.buy B．sellC．deliver D．collect10．A.club B．officeC．stand D．base11．A.developed B．existedC．followed D．entered12．A.So B．ThenC．But D．Yet13．A.crowd B．numberC．most D．part14．A.organize B．requireC．unite D．benefit15．A.trying B．practicingC．including D．considering16．A.order B．normalC．nature D．balance17．A.plan B．attendC．discover D．introduce18．A.attitude B．commitmentC．devotion D．key19．A.involved B．concernedC．settled D．impressed20．A.judgment B．decisionC．difference D．evidence

限时提分练(二十三)Ⅰ.阅读理解A语篇类型：记叙文主题语境：人与自我——生活——写给未来的自己的信〖语篇解读〗在2029年的除夕，在阅读自己2019年写给自己的信之前，“我”必须给未来的自己再写一封信。在信中，“我”写到了健康、财富、婚姻等，写完后，“我”阅读了2019年写给自己的信……1．〖答案〗与〖解析〗D考查细节理解。根据第一段尾句“Sincetheinventionofe­mailthough，they'vebeenfewandfarbetween”可知，由于电子邮件的发明，作者收到的信件少了，故D项正确。2．〖答案〗与〖解析〗A考查代词指代。根据全文内容尤其是最后一段中的“thoughInowhavenomemoryofeverhavingwrittenit”可推知，作者是在给未来的自己写信，该句中的he指作者自己，故A项正确。3．〖答案〗与〖解析〗B考查推理判断。根据第五段第三句“Ithendeletethedocumentandemptythetrashfolder—toavoidthepossibilityoftemptation”可知，作者删除了文件并清空了垃圾文件夹以避免可能的诱惑；结合下文中作者阅读2019年写给自己的信可以推断，作者删除文件是为了防止自己禁不住诱惑提前阅读信件，故B项正确。4．〖答案〗与〖解析〗C考查推理判断。根据最后一段第二句“Iopenit，tremblingwithanticipation”可知，作者在打开信时，因为期待而颤抖。由此可推知，作者在打开信时内心很激动，故C项正确。B语篇类型：说明文主题语境：人与社会——健康——何为“老”〖语篇解读〗“一个人什么时候变老”是个永恒的问题，本文就此介绍了相关的研究情况。5．〖答案〗与〖解析〗C考查主旨大意。根据第一段第二句中的“notonlydoesthedefinitionof‘old’．..foragingpopulations”可知，本段主要讲的是对“老”的定义的重要性。故选C。6．〖答案〗与〖解析〗A考查细节理解。根据第三段最后一句“Everyonewiththesameprospectiveagehasthesameexpectedremainingyearsoflife”并结合语境可推知，prospectiveage即Theexpectedremainingyearsofone'slife。故选A。7．〖答案〗与〖解析〗D考查细节理解。根据第四段第一句中的“theircommonreferencepointislifeexpectancy”可知，“年轻”和“年老”的共同参照标准是预期寿命。故选D。8．〖答案〗与〖解析〗D考查推理判断。根据最后一段最后一句中的“Thosewithmoreeducationtendnottosmoke,exercisemorefrequently,havebetterdietsandhaveregularcheckups—and,therefore,livelonger”可知，受教育更多的人活得更长。由此可推知，提高受教育水平有助于一个人