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- 问题详情：Amanhadtwosons.Theyweretwins.Theywerebornatalmostthesametimeand1ookedexactlyalike．Butinoneimportantway,theywereverydifferent.Oneofthemwasanoptimist,whiletheotheronewasapessimist.Anoptimistissomeonewhoalwaysthinksthatgoodthingswillhappen.Apessi...
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