问题补充：
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 colorC．water has smellD．water has no smell or color【小题3】All the students and Miss Li laugh becauseA．the boy gives an interesting answerB．the boy gives a wrong answerC．the boy doesn’t listen to the teacher carefullyD．the boy likes drinking water【小题4】In the text answer Miss Li’s question.A．two boysB．two girlsC．a boy and a girlD．no students【小题5】The teacher thinks.A．the second boy is wrongB．the water in the rivers is always cleanC．the water in the rivers is always dirtyD．all of them must try their best to make water cleanB
答案：
(答案→)B
解析：这篇短文主要介绍了老师在课上给学生将水无色无味，但是由于污染，很多水有了颜色，有了气味。所以我们要保护环境。
【小题1】是非判断题。根据短文第一段The students are having their chemistry（化学）class.，可知A错误。根据第一段Miss Li is telling the children what water is like.可知B正确。根据I tell you what water is like , right?”可知C错误。根据学生的回答可知D错误，故选B.
【小题2】细节理解题。根据第二段男孩说的话Miss Li, you tell us that water has no color and no smell（味道可知水无色无味。故选D。
【小题3】推理判断题。根据第二段男孩回答的内容和四个选项的比较，可知选A.
【小题4】细节理解题。根据Then another boy puts up his hand,可知又有一个男孩回答了问题，故选A。
【小题5】归纳理解题。根据老师说的话Our water is getting dirtier（脏）. That is a problem. All of us must try our best (尽力) to make it clean again.”故选D。
