Amanhadtwosons.Theyweretwins.Theywerebornatalmostthesam...
問題詳情:Amanhadtwosons.Theyweretwins.Theywerebornatalmostthesametimeand1ookedexactlyalike.Butinoneimportantway,theywereverydifferent.Oneofthemwasanoptimist,whiletheotheronewasapessimist.Anoptimistissom...