Dear editor, I'm a middle school teacher I'm worried about the increasing number of students who smoke in schools. 

Two years ago,only about 15 percent of the boys smoked.Today 55 percent do,even a few girls smoke,too. 

As is well known, smoking does great harm to our health. Facts have shown that many serious diseases, such as lung cancer heart disease,are connected with smok-ing. When one smokes in public places, harm is done not only to himself but also to all the people around. if onesmokes,he'll have to spend a lot of money on it. 

So I wish to give the students a piece of advice : give up smoking keep yourselves healthy. 

Yours truly, 

Zhao Ming