Firstlady’scampaignbringschangeWASHINGTON(AP)—Wal-Mart（...
问题详情：Firstlady’scampaignbringschangeWASHINGTON(AP)—Wal-Mart（沃尔玛）isputtingspeciallabels（标签）onsome productstohelpshoppersquicklynoticehealthierones.Millionsofschoolchildrenarehelpingthemselvestov...