题目内容：

有英文好手来看看…100词左右英语作文!
假如你是小良,你的笔友jack来信向你询问2010上海世博会的相关情况,写封100词左右的回信.主要内容如下:举办时间:2010.5.1至10.31,共184天 主题:让生活更美好,旨在探讨人类在城市化进程中面临的问题
意义:世界各地汇聚一处,展示各自的产品与技艺;同时还是一个文化交流的平台.

优质解答

Nowadays,the pollution of the Earth is more and more serious and becoming one of the most serious problems of the world.
It is our duty to save our earth.
How can we prevent our earth from polluting?firstly,donnot threw garbages at the places.Because it will pollute the environment.Secondly,donnot let the polluted water get into the river.Because it will kill fishes.
We just have one earth.Please save her!