A、 A uniformed policeman whose job is to catch criminals.
B、 A policeman out of uniform whose job is to track down criminals.
C、 An ordinary man who finds out criminals.
D、 An ordinary policeman whose job is to avoid criminals.

【正确答案】 B

【答案解析】[听力原文]
A detective is a policeman, but he does not wear a uniform. He works in his ordinary clothes. If he wears a uniform, robbers will know that he is a policeman. Then they will avoid him.
"To detect" means "to find out". A detective finds out who does bad things. He can sit in a coffee shop with other customers. He can listen to people talking. Some thieves may want to rob a shop. If they talk, a detective may hear them. Then policemen will hide in the shop. When the thieves come, the policemen will catch them.
A detective can go to a football match. He can watch for pickpockets and catch them. Pickpockets are people who steal things from people"s pockets.
A detective must be clever, honest and brave. He works hard and helps to protect us.

What is a detective?

【正确答案】 A

【答案解析】[听力原文]
What is the job of a detective?

A、 It is dangerous for thieves to drink coffee.
B、 All the people who go to a coffee shop are bad.
C、 Bad men are foolish if they talk too much.
D、 Thieves like to rob coffee shop.