- 问题详情: Tobaccoisthesecondmajorcauseofdeathintheworld.Itisresponsibleforthedeathofoneintenadultsworldwide(about5milliondeathseachyear).Ifcurrentsmokingpatternscontinue,itwillcausesome10milliondeathseachyearby2020.Halfthepeoplethatsmoketoday,whi...
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