Water is very important to the human beings.But now many rivers and lakes are polluted.
And what shall we do We can do like these things:
First we must prevent the factory from pouring waste water into the river
Second we should stop people from throwing litter into the river.Many kinds of litter may pollute the environment.
Finally we can tell the visitors how important the water is.
After doing these things,I think water will become cleaner sooner or later.Act now,and save water.
水是對(duì)人類非常重要.但是現(xiàn)在許多河流和湖泊受到污染.
而我們?cè)撛趺崔k?我們可以這樣做：
首先,我們必須防止工廠將污水倒入河流.
其次,我們應(yīng)該阻止人們把垃圾扔進(jìn)河流.各種垃圾會(huì)污染環(huán)境.
最后,我們可以告訴參觀者,水是