假設(shè)你是李華，你的美國(guó)筆友Peter來(lái)信詢問(wèn)你如何保持健康。請(qǐng)你用英語(yǔ)回復(fù)一封電子郵件，內(nèi)容主要包括：
1.合理飲食；
2.加強(qiáng)鍛煉；
3.保證睡眠。
注意：1.詞數(shù)80左右；
2.可適當(dāng)增加細(xì)節(jié)，以使行文連貫。
Dear Peter，
    I'm so glad to hear from you!In your letter you asked me how to keep healthy.
______
Yours，
Li Hua

【考點(diǎn)】提綱作文．

【答案】Dear Jack，
I'm so glad to hear from you!In your letter you asked me about how to keep healthy.I'd like to give you some advice.
As you know，we teenagers are going through a rapid growth and development which needs to be supported by a healthy and balanced diet.In order to get enough energy and nutrients，we need a variety of food，such as fish and meat，especially fresh vegetablesand fruits.Besides，you should take physical exercise regularly.For example，you can play basketball or take a walk after school. （加強(qiáng)鍛煉）What's more，having enough sleep is of great importance.Only in this way can you keep fit.
I hope you will find these suggestions helpful.
Yours，
Li Hua