D．not all the students understood the meaning of income tax

　　解析：选D　推理判断题。由文章内容可知，尽管老师对于什么是"income tax"做出了解释，尽管乔认为自己理解了老师所说的概念，但通过他的作文可以看出，他并没有理解老师在说什么，由此可确定答案为D。

　　3．The students were asked ________.

　　A．to say something about income tax

　　B．to answer some questions on income tax

　　C．to write a composition on income tax

　　D．to explain the principle of income tax

　　解析：选C　细节理解题。根据倒数第二段的"write a short composition on the subject of income tax"以及最后一段的"composition"可知，老师要求学生们写一篇关于"income tax"的作文。

　　4．What made Little Joe write that kind of composition?

　　A．His poor understanding of the teaching.

　　B．The teacher.

　　C．His classmates' nodding heads.

　　D．His spelling and grammar ability.

　　解析：选A　推理判断题。根据乔写的内容可以看出，他将"income tax"理解成了"in come Tax"，他认为Tax是个名字，由此可知他理解力较差。

　　Ⅱ.语法填空

　　Lisa never had the chance to know her father. He and her mother divorced (离婚) when she was just a young child. __1__ he didn't move far, he never came to visit his children.

　　Lisa often wondered about her father. What did he look like and what he was doing. All she knew was his name: Jeff White.

　　After Lisa grew up, she became a nurse at __2__ hospital, where she would help provide medicine and comfort for __3__ (patient) in their final days. A few weeks ago, she received a new patient __4__ name was Jeff White.

　　When Jeff came into his room, Lisa asked him if he __5__ (have) any children. Jeff told her that he had two daughters, Lisa and Elly. Lisa couldn't hold her __6__ (tear) back. She told him，"I am Lisa, your daughter."

Jeff embraced her, __7__ (say) that he was not a good father. And the daughter held his hand and kissed him.