问题补充：
The students were having their chemistry（化学）class. Miss Li was telling the children what water was like. After that, she asked her students, “Whats water ?”No one spoke for a few minutes．Miss Li asked again，“Why don you answer my question？Didn I tell you what water is like？”
Just then a boy put up his hand and said，“Miss Li，you told us that water has no color 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．
“Im sorry，children．”said the teacher，“Our water is getting dirtier and dirtier．Thats a problem．
【小题1】The students were having their class．A．English B．Chinese C．chemistryD．maths【小题2】Miss Li was telling the children what was like．A．waterB．air C．earth D．weather【小题3】A boy said，“The water in the river behind my house is always ．” A．white B．blackC．clean D．clear【小题4】Most of the children the boy．A．agreed with B．wrote toC．heard fromD．sent for【小题5】The water in the river has color and smell because it is getting ．A．more and more B．less and less C．cleaner and cleaner D．dirtier and dirtierC
答案：
(答案→)C
解析：
【小题1】细节理解题，由文中第一句“The students were having their chemistry（化学）class.”可知。
【小题2】细节理解题，由文中第二句“Miss Li was telling the children what water was like”可知。
【小题3】细节理解题，由文中第二段的倒数第二句“ The water in the river behind my house is always black and it has a bad smell．””可知。
【小题4】细节理解题，由文中第二段的最后一句“”Most of the children agreed with him．”可知
【小题5】细节理解题，由文中最后一段“Our water is getting dirtier and dirtier．可知。
