题目内容：

    Mr. Black decided to know more about the different jobs of his students’ parents. But some of students were laughing as he talked with Mary. Betty shouted, "Mary’s father is a garbageman!"Then everybody in the class laughed out loud. Mary felt her face tum red.

“Be quiet! Stop laughing!"Mr. Black said, " It is difficult but useful to be a garbageman. We should all be thankful to Mary's father.”

Mary’s father came to walk her home from school as usual, but she didn’t run up to him the way she always did. When they got back home, Mary went to her room and cried for a long time. Her father came into her room, "What happened? Why are you so sad?”

Mary told her father what happened and looked at him sadly. He didn't seem angry or hurt, “Well. “He said, " They are right. Being a garbageman is a dirty job. Tomorrow’s Saturday. Come to work with me,Mary.”

Mary wrinkled her nose because of the bad smell. "Don't worry. In five minutes you won't smell a thing.”said her father.

Everybody there was working hard, and they seemed to have a good time. Mary’s father handed her a pair of gloves and told her to get the little plastic bags and throw them into the truck.

It was fun, but also hard work. At last, no more garbage was left and Mary felt very proud and happy.

“Garbage makes us uncomfortable and unhealthy but when we clear it away, everything is nice and clean. You can make yourself happy only by making others happy.”

Mary gave her dirty, smelly garbageman daddy a big kiss because she regarded him as an unselfish man. Now whenever someone asks Mary what her daddy does, she says, "He is a garbageman! Everyone makes garbage, but my daddy takes it away!”

1.From the passage, we can know       .

A. Mary ran up to her father the way she always did

B. Mary gave her father a sweet kiss after school(es usual

C. Mary went to her room and cried for a long time after she got back home

D. Mary didn't tell her father what had happened

2.Why did Mary's father take her to his workplace?

A. To make Mary calm down.

B. To prove how dirty his job is.

C. To keep Mary away from her classmates.

D. To help Mary learn about his Job.

3.What's the main idea of the passage?

A. How Mary changed her mind about her father's job.

B. Why Mary's teacher asked the students such a question.

C. What Mary's father's job is.

D. What garbagemen do in their daily life.