Secondhandsmokeclearlykillspeopleandtheonlywaytocontrol...
問題詳情：Secondhandsmokeclearlykillspeopleandtheonlywaytocontrolitistobansmokinginallworkplaces,USSurgeon-GeneralDrRichardCarmonasaid.In1964SurgeonGeneral’sreportfirstlaidoutthe 1 ofsmoking.Yearslat...