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阅读理解WhoWanttoLiveForever?Ifyourdoctorcouldgiveyouadrugthatwouldletyouliveahealthylifefortwiceaslong，wouldyoutakeit?Thegoodnewsisthatwemaybedrawingneartothatdate，Scientistshavealreadyextendedthelivesofflies，wormsandmiceinlaboratories.Manynowthinkthatusinggenetictreatmentswewillsoonbeabletoextendhumanlifetoatleast140years.Thisseemsagreatidea.Thinkofhowmuchmoretimewecouldspendchasingourdreams，spendingtimewithourlovedones，watchingourfamiliesgrowandhavefamiliesoftheirown.Longerlifewouldgiveusachancetorecoverfromourmistakesandpromotelongtermthinking,saysDrGregoryStockoftheUniversityOfCaliforniaSchoolOfPublicHealth.Itwouldalsoraiseproductivitybyaddingtotheyearwecanwork.Longerlivesdon'tjustaffectthepeoplewholivethem.Theyalsoaffectsocietyasawhole.Wehavewar，poverty，allsortsofissuesaround，andIdon'tthinkanyofthemwouldbeatallhelpedbyhavingpeoplelivelonger,saysUSbioethicistDanielCallahan.Thequestionis'Whatwillwegetasasociety?'Isuspectitwon'tbeabettersociety.Itwouldcertainlybeaverydifferentsociety.Peoplearealreadyfindingitmoredifficulttostaymarried.Divorceratesarerising.Whatwouldhappentomarriageinasocietywherepeoplelivedfor140years?Andwhatwouldhappentofamilylifeifnineor10generationsofthesamefamilywereallaliveatthesametime?Researchintoageingmayenablewomentoremainfertileforlonger.Andthatraisestheprospectofhaving100-year-oldparents，orbrothersandsistersborn50yearsapart.Wethinkofaneldersiblingassomeonewhocanprotectusandofferhelpandadvice.Thatwouldbehardtodoifthatsiblingcamefromacompletelydifferentgeneration.Workinglifewouldalsobeaffected，especiallyiftheretirementagewaslifted.Morepeoplewouldstayinworkforlonger.Thatwouldgiveusthebenefitsofage-skill，wisdomandgoodjudgment.Ontheotherhand，morepeopleworkingforlongerwouldcreategreatercompetitionforjobs.Itwouldmakeitmoredifficultforyoungerpeopletofindajob.Toppostswouldbedominatedbythesamefewindividuals，makingcareerprogressmoredifficult.Andhoweasilywoulda25-year-oldemployeebeabletocommunicatewitha125-year-oldboss?Youngpeoplewouldbeasmallerpartofasocietyinwhichpeoplelivedto140.Itmaybethatsuchasocietywouldplacelessimportanceonguidingandeducatingyoungpeople，andmoreonmakinglifecomfortablefortheold.Andsocietywouldfeelverydifferentifmoreofitsmemberswereolder.Therewouldbemorewisdom，butlessenergy.Youngpeopleliketomoveabout.Oldpeopleliketositstill.Youngpeopletendtoactwithoutthinking.Oldpeopletendtothinkwithoutacting.Youngpeoplearecuriousandliketoexperiencedifferentthings.Oldpeoplearelessenthusiasticaboutchange.Infact，theyarelessenthusiasticabouteverything.Theeffectofanti-ageingtechnologyisdeeperthanwemightthink.Butasthescienceadvances，weneedtothinkaboutthesechangesnow.Ifthiscouldeverhappen，thenwe'dbetteraskwhatkindofsocietywewanttoget，saysDanielCallahan.Wehadbetternotgoanywherenearituntilwehavefigurethoseproblemsout.词汇:mice/mais/n.老鼠(复数)sibling/'sibli?/n.兄弟姐妹bioethicist//n.生物伦理学家注释:1.brothersandsistersborn50yearsapart出生年份相隔50年的兄弟姐妹2.Wehadbetternotgoanywherenearit我们最好离它远点，这里的it指代前面讲的anti-ageingtechnology.练习:1.WhichofthefollowingisNOTmentionedasoneofthethingsthatlivinglongermightenableanindividualtodo?A．Spendingmoretimewithhisfamily.B．Havingmoreeducation.C．Realizingmoredreams.D．Workinglonger.2.Whichofthefollowingisimpliedinthesixthparagraph?A．MarriagesintheUStodayarequiteunstable.B．MoreandmorepeopleintheUStodaywanttogetmarried.C．Livinglongerwouldmakeiteasierforpeopletomaintaintheirmaritalties.D．Ifpeoplelivelonger，theywouldstayinmarriagelonger.3.AllofthefollowingarepossibleeffectslivinglongermighthaveonworkinglifeEXCEPTA．Communicationbetweenemployersandemployeeswouldbemoredifficult.B．Moremoneywouldbeusedbyemployeesinpaymentoftheiremployees.C．Thejobmarketwouldbemorecompetitive.D．Itwouldbemoredifficultforyoungpeopletobepromotedtotoppositions.4.AnimportantfeatureofasocietyinwhichpeoplelivealonglifeisthatA．itplacesmoreemphasisoneducatingtheyoung.B．itisbothwiseandenergetic.C．itlacksthecuriositytoexperimentwhatisnew.D．itwelcomeschanges.5.WhichofthefollowingbestdescribesCallahan'sattitudetoanti-ageingtechnology?A．Optimistic.B．Pessimistic.C．Reserved.D．Negative.答案与题解：1.B长寿使个人能做的事主要在第三、四段里讲到，作者没有提到长寿可以让人更多地接受教育。2.A本题答案以下面的这两句话为依据:Peoplearealreadyfindingitmoredifficulttostaymarried.Divorceratesarerising.暗示美国人目前的婚姻关系已经十分脆弱。3.B文章的第九段讲了寿命延长、退休推迟可能带来的种种问题，但作者没有提到雇佣者需要更多的钱来支付员工的工资。4.C答案可以在第十、十一这两段里找到。5.C本题的答案依据可以在最后一段里找到。Callahan认为在搞清楚长寿社会会给我们带来哪些问题之前，最好不要急着搞抗衰老的技术。可见他对抗衰老技术的发展是有保留的。SomePeopleDoNotTasteSaltLikeOthersLow-saltfoodsmaybeharderforsomepeopletolikethanothers，accordingtoastudybyaPennStateCollegeofAgriculturalSciencesfoodscientist.Theresearchindicatesthatgeneticfactorsinf1uencesomeofthedifferenceinthelevelsofsaltweliketoeat.Thoseconclusionsareimportantbecauserecent，well-publicizedeffortstoreducethesaltcontentinfoodhaveleftmanypeoplestrugglingtoacceptfarethatsimplydoesnottasteasgoodtothemasitdoestoothers，pointedoutJohnHayes，assistantprofessoroffoodscience，whowasleadinvestigatoronthestudy.Dietshighinsaltcanincreasetheriskofhighbloodpressureandstroke.Thatiswhypublichealthexpertsandfoodcompaniesareworkingtoge