题目内容：

假如你是李华，你在澳大利亚的笔友David来e-mail透露，他觉得他的朋友吸烟很酷，也想尝试一下，为此征求你的意见。请你根据下列提示，给David回一封不少于100词的邮件，劝他不要吸烟。

1、吸烟危害大，对自身及他人的影响等……

2、一旦上瘾，很难戒除……

3、应提倡健康、积极的生活方式……

要求：邮件的格式和开头已经给出，不计入总词数。 be addicted to上瘾

Dear David,

I have learned from your e-mail that you want to try smoking as you think it is very attractive. As far as I can see, smoking is a bad habit.

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Best wishes!

Yours Sincerely ,

Li Hua