阅读下列短文，从每题所给的四个选项A、B、C和D中，选出一个最佳答案。

　　The other day in school we were discussing jobs .Our teacher, Mrs. .Bolt, said that vocations were very important and that it was never too early to think about your life's work .Most of the kids really weren't too sure about what they wanted to be .But I knew exactly what I wanted to be , and when Mrs. Bolt asked me, I replied, “A truck driver .”

　　“A truck driver,” repeated Mrs. Bolt .“Why do you want to be a truck driver, Kenneth?”

　　“Because truck drivers are always on the move .They don't have to sit at desks all day .They are out on the road and they see a lot of the country .The pay is good, too .And they never have any homework .”

　　The class laughed.

　　“Well, Kenneth,” answered Mrs. Bolt .“You certainly sound enthusiastic (热心的) .I guess that you don't like sitting at a desk or doing homework .Is that correct, Kenneth?”

　　“Yes, I guess so,” I said.

　　“Well, since you are so interested in becoming a truck driver, I think you should investigate(调查)the field a little further .I want you to go to the library and take out a book report on it and hand it in at the end of the month .”

　　That's the last time .I'll never tell anybody my secret ambition(抱负).

1．The word “vocations”means ________.

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2．Why did Mrs. Bolt assign(分配) the book report to Kenneth?

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A．Because she wanted him to learn the other side of truck driving.

B．Because she was angry with him.

C．Because she was not satisfied with the reasons he gave.

D．Because she wanted the whole class to follow his example.

3．Why won't Kenneth tell about his ambition any more?

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A．Because he can't realize his ambition.

B．He just got more homework to do because he had told Mr. Bolt about his ambition.

C．Because he was scolded by Mrs. Bolt.

D．Because he was laughed by the whole class .

4．Mr Bolt ________.

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A．was an experienced teacher

B．was unkind to others

C．was unfit to her work

D．didn't want Kenneth to be a truck driver