There are many students smoking in senior high school, the reason may be that they think they look cool or appear to be more mature while having a cigarette at hand.But there are a lot of reasons not to smoke. Smoking does harm to our health.It is dangerous to our heart and lung. A lot of diseases are caused by cigarettes.Cigarettes also have terrible smell.The seconghand smoke can also be dangerous to the others who stand around you. Therefore, no smoking in public is a strict regulation in many countries. And the most important thing is that once you come into addicitive,it's hard to get rid of it. So,we must keep far from the cigarette——for everybody's health.

高中里有很多學生吸煙，原因可能是他們覺得手中有一支煙看上去很酷或者顯得更成熟。但是，不吸煙的原因有很多。吸煙有害我們的健康，對我們的心臟和肺很危險。很多疾病都是由香煙引起的，而且煙的味道不好聞。二手煙對周圍的人也很危險。因此，公共場所禁止吸煙是很多國家的一項嚴厲規(guī)定。最重要的是，一旦你上癮了就很難戒掉了。所以，為了每個人的健康，我們必須遠離香煙。

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