阅读理解。
Mr Hunt had a bookshop near a hospital. But he never went to see a doctor when he was ill. He usually just
took some medicine. One day, when Mr Hunt carried a box of books in his hands, the box fell down and hurt
one of his feet.
"Go to see a doctor," said Mrs Hunt.
"No," he said. "I'll wait until a doctor comes here next time. Then I'll ask him about my foot. This way I'll
pay nothing to him." A few days later, a doctor came into the shop and bought some books. When Mr Hunt got
the books ready, he asked the doctor about his foot. The doctor answered him at once.
"Here are your books, sir," said Mr Hunt. "You must pay two pounds for them."
"I'll pay nothing for them."
"Oh, what?"
"I told you about your foot. I want two pounds for that."
1. Mr Hunt is a .[ ]
A. worker
B. driver
C. bookseller
D. farmer
2. Mr Hunt usually just took some medicine, because ______. [ ]
A. he was also a doctor
B. he didn't know any doctor
C. he lived far from the hospital
D. He wanted to pay nothing to doctors
3. Mr Hunt wanted to ______. [ ]
A. be friends with a doctor
B. wait for a doctor coming into his shop
C. give a doctor some books
D. show some books to a doctor
4. The doctor came into the shop to . [ ]
A. buy some books
B. look at Mr Hunt's foot
C. answer Mr Hunt's question
D. pay for some books
5. At last, . [ ]
A. the doctor paid two pounds for the books
B. the doctor paid nothing
C. Mr Hunt paid two pounds to the doctor
D. the doctor didn't help Mr Hunt
，A物块连接一个轻弹簧并处于静止状态，B物块以初速度
向着A物块运动。在B物块与弹簧作用过程中，两物块始终在同一条直线上运动，下列判断正确的是：