500-word composition of the fifth grade in primary school: the harm of smoking

Keywords: 500 words in the fifth grade of primary school

Words: 500 words composition

This article is suitable for: the fifth grade of primary school.

Composition source:

This composition is about 500 words in the fifth grade of primary school. The topic is "The Harm of Smoking". Everyone is welcome to contribute enthusiastically. Cigarettes kill one person every 10. It is estimated that 3 million people worldwide die from smoking every year. The harm of smoking to the human body-a person who smokes/kloc-0.5 to 20 cigarettes a day is 0.4 times more likely to suffer from lung cancer, oral cancer or laryngeal cancer and die than a nonsmoker; The possibility of dying of esophageal cancer is four times higher than that of non-smokers. Your chances of dying of heart disease will double. Smoking is the main cause of chronic bronchitis and emphysema, and chronic lung disease itself will increase the risk of pneumonia and heart disease, and smoking will also increase the risk of hypertension. Smoke (especially the tar contained in it) is a carcinogen-that is, it can cause cancer in the human body it touches, so any part of the smoker's respiratory tract (including the mouth and throat) may cause cancer. Nicotine can make the heart beat faster and blood pressure rise. Cigarettes are the most vicious killers of life-Consumer Warning of China Consumers Association: Smoking is harmful to health, as we all know. However, many people say that you suck mine. What is even more frightening is that the ranks of smokers in China are expanding, the age of smokers is decreasing, the number of female smokers is increasing, the average number of smokers is increasing every day, and the number of people who die from various diseases caused by smoking is also increasing ... A large number of facts show that the harm of smoking to people's health has become one of the world's public hazards. Smoking also causes great social harm. Fires are often caused by littering unlit cigarette butts, the most typical of which is the Daxinganling forest fire in May 1987. The fire * * * caused great losses of 691.300 million yuan. Afterwards, it was found out that this huge forest fire was ignited by three "smokers" throwing cigarette butts. We want Qi Xin to work together to drive the evil cigarette out of this world!