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se a lot of diseases, such as tracheitis(氣管炎), lung cancer and many other diseases. Recent years, there are tens of thousands of people dying of smoking. Meanwhile, smoking is a waste of money. Besides, careless smokers may cause dangerous fires. Smoking is bad for not only the smokers themselves, but also nonsmokers. Second hand smoking has been recognized harmful to other people. Even worse, it may cause more damages for children and pregnant you are a smoker, here are some tips can help you to reduce the harm from smoking: First, you can use a filter which can prevent most of the poisonous substance breathing into your lung, such as nicotine and tar(焦油). Second, drink a cup of tea when you are smoking, because tea is able to detoxify. Third, you can smoke the electronic cigarette rather than cigarette. Though the electronic cigarette is not pletely safety, it is less harmful for health pared with cigarette. I think the most effective way to reduce the harm is that smoke as less as you can. The less you smoke, the more health you will get, and then you will live last, considering the health of yourself and other people who you care and you care, please do not smoke! 篇四 good afternoon, everyone!i am very glad to have a speech here. my name is xxx, and my major is chemistry. hu bei, jing zhou is my hometown, a famous city in the three kingdoms, and it is rich in rice and fish. i graduated from xxx university, and now, i am studying in xxx university. in my spare time, i often play puter games, surf on line, or travel with friends and sometimes i like being alone and doing topic is smoking, do you smoke? yes or no? it has been estimated that smokers have made up half of the population. and the smokers are being younger and younger, even including some middle school students, both boys and girls. nowadays, more and more people have realized that smoking can do harm to their health. however, some people still enjoy smoking. why? some of them think it is very cool that they