- 問題詳情:Amanhadtwosons.Theyweretwins.Theywerebornatalmostthesametimeand1ookedexactlyalike.Butinoneimportantway,theywereverydifferent.Oneofthemwasanoptimist,whiletheotheronewasapessimist.Anoptimistissomeonewhoalwaysthinksthatgoodthingswillhappen.Apessi...
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