Anewstudyreportedinamedicalmagazineconcludesthatevensmo...
问题详情：Anewstudyreportedinamedicalmagazineconcludesthatevensmokerswhoreachtheir70sarelikelytolivelongeriftheystopsmoking.Researcherssaythattheyhavegotsomeofthestrongestevidence(*据)thatit'snevertool...