One day a teacher was giving her young students a lesson on how the government works. She

One day a teacher was giving her young students a lesson on how the government works. She was trying to explain the principle of ine tax (收入税).
“You see ,” she began , speaking slowly and carefully , “each person who works must pay part of his or her salary (薪水) to the government . If you make a high salary , your taxes are high . If you don’t make much money , your taxes are low .”
“Is that clear?” she asked. “Does everyone understand the meaning of ine tax?” The students nodded.
Are there any questions?” she asked. The students shook their heads.
“Very good!” she said.” “Now, I would like you to take a piece of paper and write a short paragraph on the subject of ine tax.”
Little Joey was a slow learner. He had lots of problems with spelling and grammar, but this time he at least seemed to understand the task. He took his pen and after a few minutes, he handed the teacher the following position:
Once I had a dog. His name was Tax.
I opened the door and in e Tax.
【小题1】The teacher was trying to explain      one day.A．the basic principles of the ine tax B．how the government works C．everyone should pay ine tax D．how much tax one should pay for his ine【小题2】 After the teacher’s explanation,     .A．all the students shook their heads B．many of the students were still puzzled C．Most students understood the meaning of ine tax D．Some students didn’t understand their teacher【小题3】The students were asked     .A．to say something about ine tax B．to answer some questions on ine tax C．to write a position on “ine tax”D．to explain the principle of ine tax【小题4】Little Joey     .A．was clear about the subject B．grasped what ine tax meant C．wrote a paragraph about his dogD．did as what he was told to doA