In the modern socilty,more and more people start to smoke,espically teenagers.some of them think it is cool,and some think it can be relexed.But actually smoking is harmful to your health.
smoking can cause many diseases,espically cancer.And smoking is not only harmful to your health,but also can harmful to your famliy's.The smoker's average life is five to eight years shorter than unsmoker.
In conclusion,smoking is a bad habit,and hopefully we can quit smoking any more.