假如你是李华，你的笔友Mike 从媒体上得知前段时间全国多地包括宁波等地出现雾霾，非常担心，写E-mail询问有关情况，请你回复。回复应包括以下要点：1/实况描述   2.影响和成因   3.生活启示
注意：1.词数：100-120词。 E-mail的开头与结尾已给出，不计入总词数。
2.生词：雾霾 haze
Dear Mike,
Thank you very much for your concern.
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
Yours,
Li Hua