题目内容：

假如你是李华，是金鼎中学校刊记者，请你为校刊写一篇英语短文，介绍最近在我国很多城市发生的雾霭（haze）天气。请参考以下要点：

危害；

原因；

如何自我防护；

注意：

1、词数100左右；

2、开头已给出，不计入总词数。

Recently haze pollution has happened in cities of China

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