阅读下面短文，从短文后各题所给的四个选项（A、B、C、和D）中，选出可以填入空白处的最佳选项，
Afterspendingaweekendawaywithmyadultson,IwassoimpressedbyhisgenerousheartthatIsenthimthisletter.
Dearson,
Iwanttothankyouforteachingmeavery36lessoninlifebythegreatexampleyou37.WhenwewereeatingatthatcaféinBondiandapersonwhohad38hishamburgerdidn’thaveenoughmoneytopayforit,withoutany39,youwentoverandputthe40$2intohishand.
Whenwewereleaving,you41threwafive-centcoinontothepavementandsaid42like,“Somekidwillreallyenjoy43this.”
Lastweek,ayoungman44meinthelineatapetr olstationdidn’thave45moneytopayforhispetr ol.Iaskedthemoneycollector,“Howmuch46ishe?”Shetoldmehehadmeanttoput$15ofpetr olinhiscar47hehadbeenlookingatthewronggauge(计量表)andhadputin1548,whichcametojustover49.Thatisaneasymistake50bothgaugesrunfast.
Somethingmademethinkofyouand51youdidthatnightatthecaféinBondi.Ihandedtheman$6.Hewasso52andsaid,“Butwhywouldyoudothisforme?”IjustsmiledasIthoughtofyou.
Thankyou,son,forteachingmethat“it’s53togivethanreceive”.NowwhenIseeafive-centcoinonthe54andwanttopickitup,Ithinkofyouandleaveit55,justincasesomekidwillgetakickoutoffindingit.
Lovealways,Mum
36.A.humorousB.privateC.reasonableD.valuable
正确答案：D
