书面表达（满分25分）

假定你是李华，David 是你的美国笔友。他对中国鼓励使用环保购物袋很感兴趣，来信向你询问此事。请你给他写封回信。主要内容如下：

感谢他的关注。

简要介绍相关情况。

谈谈你的感想。

注意：

词数100左右，信的格式已为你写好。

可根据内容要点适当增加细节，以使行文连贯。

________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua

The nurse teaches a client about the relationship between body position and gastroesophageal reflux. Which of the following statements by the client would indicate that he understands measures to avoid problems with reflux while sleeping()

A. "I can elevate the head of the bed 4 to 6 inches. "

B. "I can elevate the foot of the bed 4 to 6 inches. "

C. "I can sleep on my back without a pillow under my head. "

D. "I can sleep on my stomach with my head turned to the left. \