Non-smoking guarantee

To: 165 in Beijing.
As the ninth article of the Beijing High School Student Code stipulates that middle school students should be self-respecting and self-love, overcome difficulties and setbacks. No smoking, no drinking, no gambling, no drugs. In addition, the Law on the Protection of Minors clearly stipulates that it is forbidden to sell tobacco and alcohol to minors; it is not allowed to drink or smoke indoors where minors are concentrated. Because smoking can seriously affect our health. According to the investigation, tobacco smoke contains at least three dangerous chemicals: tar, nicotine and carbon monoxide. Tar is a mixture of several substances that condense into a viscous substance in the lungs. Nicotine is an addictive drug that is absorbed by the lungs and acts primarily on the nervous system. Carbon monoxide can reduce the ability of red blood cells to transport oxygen to the body.

A person who smokes 15 to 20 cigarettes a day is prone to lung cancer, and the chance of death from oral or laryngeal cancer is 14 times greater than that of non-smokers. The risk of death from esophageal cancer is greater than that of non-smokers. Times; the chance of dying from bladder cancer is twice as large; the chance of dying from heart disease is twice as large. Cigarette smoking is the leading cause of chronic bronchitis and emphysema, and chronic lung disease itself increases the risk of pneumonia and heart disease, and smoking also increases the risk of high blood pressure.
Smoke is a carcinogen, that is, it can cause cancer in the tissues it comes into contact with. Therefore, smokers may have cancer in any part of the respiratory tract.
Nicotine can speed up the heartbeat and raise blood pressure. Tobacco smoke may be due to carbon monoxide, which seems to promote atherogenesis, which is a cause of many heart diseases. People who smoke a lot, heart When a disease occurs, the chance of death is much greater than that of non-smokers.
Most smokers like to swallow a certain amount of tobacco, so the digestive tract is at risk of cancer.
Fine hairs arranged in the airways in the lungs usually exclude foreign objects from the lung tissue. These fluffs will continuously sweep the particles in the lungs into the sputum or mucus, and discharge them. In addition to carcinogenicity, the chemicals in the tobacco smoke will gradually destroy some of the villi, causing the mucus secretion to increase, and the lungs will develop chronic diseases. Easy to contract bronchitis. Obviously, the "smoker's cough" is due to the damage to the mechanical performance of the lungs, and the amount of sputum is increased.
Bladder cancer may be caused by carcinogenic chemicals contained in inhaled tar.
I hereby make the following guarantees:
1. Resolutely not smoking at school.
2. If you find smoking in school, you are willing to report to the teacher or the relevant school leaders immediately and are willing to accept the supervision of the classmates.
3. If you have a smoking behavior, you are willing to accept all penalties from the school, including dropping out.
Guarantor: classmate
year month day
Parents of classmates: