The disadvantage of smoking.Smoking is a very bad habbit.It is well known on harming our body's health.just imagine we are inhaling more than thousands of harmful chemical substance while we are smoking.How much would it harm our body?It has been scientifically proven that smoking may leads to various diseases like Lung cancer.which not only harm to our body,but also increase the medical expenses for a family or even the country..Save your money spending on cigarettes,not only give you back your health.but also will save alot of money.Kindly reconsider if you are a smoker.(应该够字数了）