Manyyoungboysandgirlshadthehabitofsmoking,thoughtheyare...
问题详情：Manyyoungboysandgirlshadthehabitofsmoking,thoughtheyaremiddleschoolstudent.Asweallknow,smokingdoharmtohumanbeings.Moreandmorepeoplehaverealizedthathowseriousthisproblemis.Buttheyareneverboring...