近日你的外国朋友Mike写信向你咨询H7N9禽流感的事情并询问该如何预防禽流感,请你根据以下信息写信告诉他: H7N9禽流感是一种禽类传染疾病,症状是高热、咳嗽和呼吸困难, 但可防可治: 1. 勤洗手; 2. 每天打开门窗通风一到两次; 3. 不要接触病的或病死的家禽和畜类,肉类一定要煮熟后吃; 4. 经常锻炼身体,增强个人体质; 5. 有症状时及时就医。 【写作要求】 只能使用5个句子表达全部内容。回信的开头与结尾已给出,不计入5个句数内。 【参考词汇】 传染infect 禽类 poultry 畜类cattle 咳嗽 cough Dear Mike, I am glad to hear from you again. In your last letter, you asked me about H7N9 avian influenza and how to prevent ourselves falling into such a disease. Now let me tell you something about it. ___________________________________________________________ ______________________________________________________________________________________________________________________________________________________Best wishes to you! Yours, Li Hua