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rs mental health. Many games involve violence, such as fighting and killing. When they enjoy the pleasure of success, a violent turn of mind is developed and rooted in them, which may induce future violent behaviour in their life. So when puters entertaining function is highly spoken of ,such a problem does deserve our serious concern. In addition, long times working before puter also does harm to health. The radiation from the puter can arose many unfortable feelings., like a headache, poor eyesight. At last, people who are fond of making friends on line should also be careful. Many convicts use Internet as a way to cheat. Although it has many disadvantages , Internet has bee an indispensable part of peoples life in recent years. In my point of view, its wrong to blame Internet itself, its all depend on the way we use it. If we use it in a right way, it can be one of the best friends in our life. That s all , thank you !課前三分鐘英語演講稿5篇 。課前三分鐘英語演講稿5篇課前三分鐘英語演講稿篇1 Today smoking is a widespread habit ali over the world. Not only the old, the youth, but also middle school students have been engaged in smoking. Many of them think that smoking is a smart symbol. However, smoking is harmful to ones ,health. It contributes a lot of lung cancer, from which many people have died in the past years. It can also cause many other diseases. In a word, if you smoke, you do have a much greater chance of losing your health. Furthermore, scientific research shows that smoking is not only harmful to smokers themselves, but also a threat to public health, especially to women and children. Therefore, many countries have made laws forbidding smokers to smoke m public places such as cinemas, stations, hospitals, and so on Giveup smoking! If you d