题目内容：
根据下面内容，回答题 Whenitcomestofriends,Idesirethosewhowillsharemyhappiness,whopossesswingsoftheirownandwhowillflywithme.Iseekfriendswhosequalitiesilluminatemeandtrainmeupforlove.ItisforthesepeoplethatIreservetheglowinghours,toogoodnottoshare.
WhenIwasintheeighthgrade,Ihadafriend.Wewereshyand"tooserious"aboutourstud-ieswhenitwasbecomingfashionablewithourclassmatestolearnacceptablesocialbehaviors.Wesaidlittleatschool,butshewouldcometomyhouseandwewouldsitdownwithpencilsandpaper,andoneofuswouldsay:"Let'sstartwithatrainwhistletoday."Wewouldsitquietlytogetherandwriteseparatepoemsorstoriesthatgrewoutofatrainwhistle.Thenwewouldreadthemaloud.Attheendofthatschoolyear,wewerechangingintosocialcreaturesandthestoriesandpoemsstopped.
WhenIlivedforatimeinLondon,Ihadafriend,hewasindespairandIwasindespair.Butourfriendshipwasbasedontheideaineachofusthatwewouldbesorrylaterifwedidnotexplorethisgreatcitybecausewehadfeltbadatthetime.WemeteverySundayforfiveweeksandfoundmanyexcellentthings.Wewalkeduntilourdespairsdisappearedandthenweparted.WegaveLondontoeachother.
ForalmostfouryearsIhavehadremarkablefriendwhoseimaginationilluminatesmine.Wewritelonglettersinwhichweoftendiscoverourstrangestselves.Eachofusappears,sometimesin
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afunnyway,intheother'sdreams.SheandIagreethat,atcertaintimes,weseemtobepartsofthesamemind.Inmymostinterestingmoments,Ioftenthink:"Yes,Imusttell..."Wehavenevermet.
ItissuchcomfortingcompanionsIwishtokeep.Onebrighthourwiththeirkindisworthmoretomethanthelifetimeservicesofapsychologist,whowillonlyfillupthehealingsilencenecessarytothosedarkestmomentsinwhichIwouldratherbemyownbestfriend.
Intheeighthgrade,whattheauthordidbeforedevelopingpropersocialbehaviorwasto_________. A．becomeseriousaboutherstudy
B．gotoherfriend'shouseregularly
C．learnfromherclassmatesatschool
D．sharepoemsandstorieswithherfriend
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