"What'sthenameofourneighbor?Ican'trememberrightnow."Haveyoueverheardyourgrandparentsaskquestionslikethissometimes?Usuallywethinkthatolderpeople'smemorybecomesbadbecausetheirbrainsgetweak.Butnowat

　　"What'sthenameofourneighbor?Ican'trememberrightnow."Haveyoueverheardyourgrandparentsaskquestionslikethissometimes?Usuallywethinkthatolderpeople'smemorybecomesbadbecausetheirbrainsgetweak.ButnowateamofscientistsattheUniversityofTubingeninGermanyhasanewidea.

　　"Thehumanbrainworksslowerinoldage，"saysMichaelRamscartheleadscientist."Butonlybecausetheyhavestoredmoreinformationovertime."

　　Thefindingsarebasedonaseriesofcomputersimulations(模拟)oflearningandmemory.Scientistsletthecomputersreadacertainamountofwordsandlearnnewthingseachday.Whenthecomputer"reads"onlysomuchitsperformanceoncognitive(认知)testsissimilarofayoungadult.Butifthecomputerlearnstheexperienceswemightencounteroveralifetimeitsperformanceissimilartothatofanolderadult.

　　Oftenitisslowerbutnotbecauseitsprocessingcapacityhasdeclined.Ratherincreased"experience"hascausedthecomputer'sdatabasetogrowgivingitmoredata(数据)toprocess-whichtakestime.Thisissimilartooldpeople.Imagineapersonknowstwopeople'sbirthdays.Anotherpersonknowsthebirthdaysof2000peoplebutcanonlymatchtherightpersontotherightbirthdayninetimesoutof10.Canyousaythefirstpersonhasabettermemorythanthesecondperson?

　　1.Thewriterusesaquestionatthebeginningofthepassageto_______.

　　A.invitethereaderstoanswerthequestion

　　B.attractthereaders'attentiontothetopic

　　C.showhowweakolderpeople'sbrainsare

　　D.tellthereadersthelatestfindingsaboutbrains

　　2.Accordingtotheresearchwhydooldpeopleforgetpeople'snameseasily?

　　A.Becausetheyhaveaverypoormemory.

　　B.Becausetheyaretoooldtorememberthings.

　　C.Becausetheirbrainsbecomeweakerthanbefore.

　　D.Becausetheyhavestoredtoomuchinformation.

　　3.Whatwouldbethebesttitleforthepassage?

　　A.Dooldpeoplehaveabadmemory?

　　B.Scientists'newfindingsonbrains

　　C.Humanbrain'sprocessingcapacity

　　D.Whichisbettertheoldortheyoung?