On the whole smoking is very harmful and it does no good!

1.Topic sentence:

Paragraph 2:Smoking hazards,
Paragraph 3:Harm to others,
Paragraph 4:second-hand smoke hazards,
Paragraph 5:Advices

           On the whole smoking is very harmful and it does no good!

    Smoking is a bad habit for us.Now i have a report of smoking and also asked my classmates and friends about it.Most of the students do not smoke，only a handful of students smoke.But the daily amount of smoking is very small.Let me show you my
results of this investigation.
    Nicotine contained in a cigarette can be a poisoned mouse,20 of the nicotine in cigarettes can kill a cow.Cigarette smoke (In particular-the tar) is a carcinogen.That is to say,it can come into contact with in the organization have cancer.So,smokers of any part of respiratory tract (Including the mouth and throat) cancers may have occurred.Most smokers prefer to swallow a certain amount of smoke.Digestive tract diseases (Especially in the esophagus and pharynx) therefore there is the risk of cancer.
    Scientific research has shown that smoking can lead to heart disease, cancer and other problems. The World Health Organization says that smoking-related diseases kill at least 2.5 million people each year.There are 540 million people in China suffer from passive smoking, including 180 million children under the age of 15, the number of people dying from passive smoking each year more than 100,000, while passive smoking awareness rate is only 35%.World Health Organization reports that, Smoking is harmful to human multi-faceted, Major problems that lead to asthma, pneumonia, lung cancer, high blood pressure, heart disease and reproductive development,etc.
    Among them, second-hand smoke on the passive smokers is no less harm than active smokers, especially for young children is particularly serious harm. The survey shows that in China, the main victims of passive smoking are women and children, although they do not smoke, but often in the family, public places suffer from second-hand smoke.In addition, the workplace, venue, etc., but also often become a place of secondhand smoke flooding. Although there is no direct smoking cigarettes, but inhaled the body, can still cause harm to the body, and even greater than the harm of smokers.
    Smoking is harmful to health.No smoking,our lives will have a brighter future.Smoking will hurt their families and friends.We love our family and friends,so do not smoke.Stay away from cigarettes,love life.