It is almost known to all that oking is bad for people's health. Scientific researchs show that oking can lead to heart disease,cancer and other problem.The World Health Organization says diseases linked to oking kill at least two million five-dred-thousand persons each year.
Still,many people find it difficult to stop oking.One reason is that oking usually becomes a habitual behaviour,and habits,whether good or bad are not easy to be given up.Another reason is the effect of nicotine,the substance found in cigarettes works on people somewhat as drugs do.（英语作文）
Measures have been taken to people keep away from the harm of oking. In many cities,oking is forbidden in public places.The danger of oking is warned of rywhere.And newspapers are asked not to publish aertisements for cigarettes.World "No Tobacco Day" is observed ry year as the biggest compaign against oking.（绿叶鸟网）
