书面表达

为了纪念6·5世界环境日．请你给China Daily写一篇关于保护水的短文．内容要点包括：

1．中国的水污染形势．

2．水污染的来源——工厂、生活、农药．

3．呼吁和建议．

注意：1．字数：100～120；

2．题目和短文的开头已经给出，不计入总词数．

　　Water is as important as our life．But with the increase of population and the rapid development of industry,…

　　…And better ways that don't cause water pollution must be found to kill pests and weeds．

根据所给汉语意思，完成下面句子。

很明显，他写那首歌是为了纪念他的妈妈．

It's ________ that he wrote the moving song ________　________　________ his mother．

翻译

这个大会是为了纪念他们祖先的到来．

The meeting is in ________　________ their ancestors' arrival．