9.
根据短文内容判断正误。
The students were having their chemistry class. Miss Li was telling the
children what water was like. After that, she asked her students, "What's water?"
No one spoke for а few minutes ·Miss Li asked again, "Why don't you answer
my question? Didn't I tell you what water is like?
Just then а boy put up his hand and said, Miss Li, you told us that water
has no colour and no smell · But where to find such kind of water ? The water
in the river behind my house is always black and it has a bad smell "Most
of the children agreed With him.
"I'm sorry, children "said the teacher, Our water is getting
dirtier and dirtier · That's a problem.