假设你是一名已经移民到美国的学生Tim，在电视上，你看到中国出现了H7N9禽流感(H7N9 bird flu),目前已经有87名禽流感患者，你为你在中国上学的笔友Mike的健康与安全担心。请立即给他写一封e-mail询问他的情况，并给他提出防护建议。
要点:
询问
他的健康状况
他们学校有无H7N9
他们是否还在上学
建议
尽量待在家里，少去人多的地方；
勤洗手，讲卫生；
多开窗，保持空气新鲜；
多吃水果蔬菜
Dear Mike，
From the TV I know H7N9 bird flu have been discovered in China. 87 people have been confirmed to be infected with the H7N9 bird flu. I am worried about you.
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So far, the disease is not so deadly as it seems to be. Do be at ease! Take care and you will be OK.
Yours,
Tim
