题目内容：
根据以下材料，回答题WilliamShakespearedescribedoldageas"secondchildishness"--noteeth,noeyes,notaste.Inthecaseoftastehemay,musicallyspeaking,havebeenmoreperceptivethanherealised.ApaperinNeurologybyGiovanniFrisoniandhiscolleaguesattheNationalCentreforResearchandCareofAlzheimers'sDiseaseinItaly,showsthatfrontotemporaldementiacanaffectmusicaldesiresinwaysthatsuggestaregression,ifnottoinfancy,thenatleasttoapatient'steens.
Frontotemporaldementia,adiseaseusuallyfoundwitholdpeople,iscaused,asitsnamesuggests,bydamagetothefrontandsidesofthebrain.Theseregionsareconcernedwithspeech,andwithsuch"higher"functionsasabstractthinkingandjudgment.
TwoofsuchpatientsintriguedDrFrisoni.Onewasa68-year-oldlawyer,theothera73-year-oldhousewife.Bothhadundamagedmemories,butdisplayedthesortsofdefectassociatedwithfrontotemporaldementiaadiagnosisthatwasconfmnedbybrainscanning.
Abouttwoyearsafterhewasfirstdiagnosed,thelawyer,onceaclassicalmusicloverwhoreferredtopopmusicas"merenoise",startedlisteningtotheItalianpopband"883".Ashiscom-mandoflanguageandhisemotionalattachmentstofriendsandfamilydeteriorated,hecontinuedtolistentothebandatfullvolumeformanyhoursaday.Thehousewifehadnotevenhadthelawyer'sloveofclassicalmusic,havingneverenjoyedmusicofanysortinthepast.Butaboutayearafterherdiagnosisshebecameveryinterestedinthesongsthather11-year-oldgranddaughterwaslisteningto.
ThiskindofchangeinmusicaltastewasnotseeninanyoftheAlzheimer'spatients,andthusappearstobespecifictothosewithfrontotemporaldementia.Andotherstudieshaveremarkedonhowfrontotemporal-dementiapatientssometimesgainnewtalents.Fivesuffererswhodevelopedartisticabilitiesareknown.Andinanothercase,onewomanwiththediseasesuddenlystartedcom-posingandsingingcountryandwesternsongs.
DrFrisonispeculatesthattheillnessiscausingpeopletodevelopanewattitudetowardsnovelexperiences,Previousstudiesofnovelty-seekingbehavioursuggestthatitismanagedbythebrain'sfightfrontallobe.Apredominanceoftherightovertheleftfrontallobe,causedbydamagetothelatter,mightthusleadtoaquestfornewexperience.Alternatively,thedamagemayhaveaffectedsomespecificnervoussystemthatisneededtoappreciatecertainkindsofmusic.Whetherthatisagainoralossisadifferentmatter.AsDrFrisoniputsitinhisarticle,thereisnoaccountingfortaste.
ThewriterquotesShakespearemainlyto A．praisethekeenperceptionofthegreatEnglishwriter.
B．supportDr.Frisoni’stheoryaboutadisease.
C．startthediscussiononabraindisease.
D．showthelonghistoryofthedisease.
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