A man came home from work late, tired and unhappy, to find his 5-year-old son waiting for him at the door.
The boy asked, "Daddy, how much do you make per hour?" The father was furious at his son's question.
When he said $20 an hour, the little boy asked his father to lend $10 to him. The father was even angrier because he thought the boy just wanted some money to buy a toy. So he didn't answer his son.
The little boy quietly went to his room. After about an hour or so, the man calmed down and started to think: Maybe there was something he really needed to buy with that $10.
"Maybe I was too hard on you just now," the man went into the room and said. "Here's the $10 you asked for." 
"Oh, thank you, Daddy!" He said. Then, he reached under his pillow, pulled out some crumpled coins and said, "Daddy, I have $20 now. Can I buy an hour of your time? Please come home early tomorrow. I would like to have dinner with you."
How much does the man make if he works 10 hours?

A．$10.

B．$20.

C．$30.

D．$40

In this passage, the underlined word "furious" means ______.

A．very angry

B．quite happy

C．too excited

D．a little nervous

At first, the father refused to lend the boy any money because ______.

A．he thought the boy wanted to keep the money for himself

B．he did not have enough money at that moment

C．he thought the boy would buy something of no use

D．the boy always borrowed money from him

The boy wanted to buy ______ with twenty dollars.

A．a new book for himself	B．a nice present for his father
C．a toy for his own birthday	D．an hour of his father's time

From the passage, we can infer (推断) that the boy's father ______.

A．often played with his son	B．spent little time with his son
C．didn’t love his son at all	D．often came back home early