题目内容
假设你是李华，David是你的美国网友。他对目前中国出现的雾霾天气很关注，来信向你询问此事。请你给他写封回信。主要内容如下：
1. 感谢他的关注；
2. 介绍雾霾(haze) 天气给人们的身体、生活带来的危害；
3. 谈谈你的感想。
注意:①可适当增加细节，以使行文连贯流畅；
②开头与结尾巳写好，不计人总词数；
③词数：120左右。Dear David,
I' m glad to receive your letter.
Dear David,
I，m glad to receive your letter. I have learned from your letter that you are concerned about the haze which frequently appears in some areas of China. Thank you for your concern. I，m also very worried about such terrible weather because it has brought much inconvenience or rather harm to people，s health such as traffic jam，road accidents,bad coughs,throat hurts and even lung cancers and so on.
As everybody knows,a good environment comes from good protection. So we should do what we can to make a difference. Try to drive less and choose air-friendly products. Only when everyone has the environmental awareness can we have cleaner air.
Hoping to hear from you soon and share your good ideas.
