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SARS 非典 Bird Flu 禽流感 AIDS 愛滋病 Smoking Drinking Stay up late Pressure Take less exercise Junk food pollution Noise Why do people get ill? ? Sleep eight hours and get up early every day. ? Take more exercise. ? Eat more fruit and vegetables. ? No smoking or drinking. ? Often open the windows and let fresh air in. ? Wash hands and clothes often. ? Clean your room every day. ? Don’t be too tired. ? Take good care of yourself. ? Keep good mood every day. How to st