1.youth do not start smoking for any one particular reason
2.Predisposing factors help identify which children and youth will be the most likely to smoke.
3.Youth experiment with smoking because their friends are doing it.
4.Youth experiment with smoking because they see others smoking and smoking appears "normal."
5.Youth have different reasons for continuing to smoke than their reasons for starting to smoke
给你点了,剩下你就加油吧