David Moore taught science at the City School. He needed some books, so he bought them. He left the books in his car in a quiet street. Then he went to buy some other things. At about six o’clock he came back to the car. One window was open and the books were not there! David had to drive to Fry Road.
That night he wrote a letter to a newspaper. The next day he went to the police station. On Friday people read this in the newspaper:
“Book: Do you have any old books? I buy old and modern books. Open all day on Saturday. David Moore, 26 Fry road.”
David stayed at home on Saturday. His first visitor came at eight o’clock. David took him to the kitchen. At half past nine another man arrived. He had a bag with him.
“Mr. Moore?” the man asked.
“That’s right,” David said. “Can I help you?”
“I’ve got some good books. You buy books, don’t you?”
“Yes, bring them in. I’ll have a look at them.”
Soon the books were on the table. “Come in now,” David called, “and bring the list.”
A policeman came into the room from David’s kitchen. They were just the same. “Come with me, sir,” the policeman said to the man.
David’s first visitor was ______________.

A．a student

B．a policeman

C．a reporter

D．a thief

From the story we know that________.

A．David was a good teacher

B．David was a clever man

C．The policeman knew the thief well

D．David worked hard

How did David get his books back?

A．A reporter found them and gave them to him.

B．David found them in his school.

C．He thought of a good way to catch the thief.

D．He found them at home.