the students of class 4 were having their chemistry class.Miss Li was telling the children what water was like. After that,she asked her students,"What water like?"Everyone spoke for a few minutes.Miss Li asked again,"Why don't you answer my question?"Is it very hard? Didn't you listen to me cardfully just now?"
Just then a boy put up his hand and said,"Miss Li,you tell us that water has no color and no smell.But where to look out such kind of water?"The water in the river behind my house is always black ande it has a bay smell." Most of the children agreed with him. The boy went on saying,"Myfamily and neighbors are worried about the water.We wonder when and how we can stop the faceories from polluting the river."
I'm sorry, children,"said the teachier."It's ture that our water is getting dirtier and dirtier .That is what we should talk about next.