The students were having their chemistry class. Miss Li was

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 a few minutes．Miss Li asked again，“Why don’t you answer my question? Didn’t I tell you what water is like?”

“I’m sorry，children.” said the teacher，“Our water is getting dirtier and dirtier．That’s a problem.”
小题1:The students were having their _______ class．

A．English

B．Chinese

C．chemistry

D．maths

小题2:Miss Li was telling the children what ______ was like．

A．water

B．air

C．earth

D．weather

小题3:A boy said，“The water in the river behind my house is always _______．”

A．white

B．black

C．clean

D．clear

小题4:Most of the children _______ the boy．

A．agreed with

B．wrote to

C．heard from

D．sent for

小题5:The water in the river has colour and smell because it is getting _______．

A．more and more	B．less and less
C．cleaner and cleaner	D．dirtier and dirtier