肺炎最常见的病原体是（）

A.细菌

B.病毒

C.支原体

D.衣原体

E.军团菌

假设你是李越，你的澳大利亚笔友Eileen最近沉迷于(be addicted to)电脑游戏而不能自拔，严重影响了学习和身心健康。请你用英语给她写一封书信劝说她戒掉这一不良习惯。

注意：1. 词数：100左右；    2. 可适当增加细节，以使行文连贯通顺。

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Yue