1.世界禁烟日为每年的5月31日；

As the all konw.may 31 is the word's no smoking Day .In china smonking is becoming common .And the smokers are becoming younger and younger,even including some middle school students.But many people don't know the danger of smoking
It's a very terrible habit .It's bad for our health ,just like our heart and lungs and it give you cancer
On the other hands,smokers cost money to buy cigarettes.And many people think smoking is a kind of fashion.But it's not cool!
Therefore,I hope all the smokers can give up smoking for themselves and also for the people around them.