- 问题详情:MelissaPoewas9yearsoldwhenshebeganacampaignforacleanerenvironmentbywritingalettertothethenPresidentBush.Throughheronefforts,herletterwasreproducedonover250donatedbillboards(广告牌)acrossthecountry.TheresponsetoherrequestforhelpwassohugethatPo...
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