2016年12月大学英语四级作文热门话题：吸烟的危害

“Why do you want to smoke?”Many often ask like this.In years,there is a to more and more also learn to smoke.They don't know the of ,just think that is cool, it's a trend.From the ,we can come to a , is equal to .

It is well known that a many such as tar and . can ., can harm not only but also non- them.On the one hand,the will do harm to ’ lung cells and blood ,which can their .On the other hand,non- to -hand smoke are at high risk of many .

To be brief, is no less than ,which the both ’ and them. try their best to give up ,for their own , for the .