
英语作文 好朋友mary感冒请你给她提一些建议
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Experts suggest that in peacetime should pay attention to indoor ventilation windows to keep the air fresh, seasonal reduction in popular outdoor activities of the group, the elderly, the infirm and children to be as much as possible to avoid crowded public places, and vinegar can be carried out fumigation of indoor air Disinfection. Influenza vaccination is the best way to prevent influenza is the world's most effective against influenza, the most economic measures. People over the age of 60, the chronically ill and infirm; infants and young children and students
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