The students are having their chemistry（化学）class. Miss Li is

The students are having their chemistry（化学）class. Miss Li is telling the children what water is like. After that, she asks her students some questions, and one of them is, “Boys and girls! What is water? Can you tell me?” She waits for a few minutes, but no one answers her. Then Miss Li asks again. “Why don’t you answer my question? I tell you what water is like , right?”
Then a boy puts up his hand and says, “Miss Li, you tell us that water has no color and no smell（味道）. But I think that water is something that is black when I wash my hand in it.”
All the students begin to laugh(笑). Miss Li laughs too. Then another boy puts up his hand, Miss Li says “What do you think, Wang Bing?” The boy says:” Miss Li, where can we find water that has no color and no smell?”
“Why do you say so?” Miss Li asks.
“The water in the river behind my house is always black and it has a bad smell.” Answers the boy. And most of the children think he is right.
“I am sorry to hear that, children.” says the teacher. “Our water is getting dirtier（脏）. That is a problem. All of us must try our best (尽力) to make it clean again.”
小题1:Which of the following is right?

A．Miss Li is giving the students a math lesson.

B．Miss Li tells the students something about water.

C．Miss Li doesn’t tell the students what water is like.

D．All the students don’t know what water is like.

小题2:Miss Li tells the children _________.

A．water is clean.	B．water has color
C．water has smell	D．water has no smell or color

小题3:All the students and Miss Li laugh because________

A．the boy gives an interesting answer

B．the boy gives a wrong answer

C．the boy doesn’t listen to the teacher carefully

D．the boy likes drinking water

小题4:In the text ______ answer Miss Li’s question.

A．two boys

B．two girls

C．a boy and a girl

D．no students

小题5:The teacher thinks_______.

A．the second boy is wrong

B．the water in the rivers is always clean

C．the water in the rivers is always dirty

D．all of them must try their best to make water clean