Q: What are the speakers talking about?

　　【答案】B) The coverage of newspapers.

　　【解析】此题为推理题。从关键词newspapers，robberies等可知，男子认为报纸上涉及的都是抢劫、自杀等内容，可见两人正在谈论报纸的内容。

　　17.

　　M: I can’t believe so many people want to sign up for the Korea Development Conference. We will have to limit the registration.

　　W: Yeah, otherwise we won’t have room for the more.

　　Q: What are the speakers going to do?

　　【答案】C) Limit the number of participants in the conference.

　　【解析】此题为细节题。男子没有想到那么多人来参加会议，所以必须限制人们注册，从女子对其的肯定回答也可进一步肯定他们要限制参与人数。

　　18.

　　W: Hi, I’m calling about the ad for the one bedroom apartment.

　　M: Perfect timing! The person who was supposed to rent it just backed town to take a room on campus.

　　Q: What do we learn from the conversation?

　　【答案】A) The apartment is still available.

　　【解析】此题为推理题。从对话可知，男子告诉女子她打电话来的时机正好，因为本来要租房子的人回到城镇去租大学的房间了，所以女子还能够租广告上的公寓。

Conversation 1

　　W: One of the most interesting experiments with dolphins must be one done by Doctor Jarvis Bastian. What he tried to do was to teach a male dolphin called Bass and a female called Doris to communicate with each other across a solid barrier.

　　M: So how did he do it exactly?

　　W: Well, first of all, he kept the two dolphins together in the same tank and taught them to press levers whenever they saw a light. The levers were fitted to the side of the tank next to each other. If the light flashed on and off several times, the dolphins were supposed to press the left-hand lever followed by the right-hand one. If the light was kept steady, the dolphins were supposed to press the levers in reverse order. Whenever they responded correctly, they were rewarded with fish.

　　M: Sounds terribly complicated.

　　W: Well, that was the first stage. In the second stage, Doctor Bastian separated the dolphins into two tanks. They could still hear one another, but they couldn’t actually see each other. The levers and light were set up in exactly the same way except that this time it was only Doris who could see the light indicating which lever to press first. But in order to get their fish, both dolphins had to press the levers in the correct order. This meant of course that Doris had to tell Bass whether it was a flashing light or whether it was a steady light.

　　M: So did it work?

　　W: Well, amazingly enough, the dolphins achieved a 100 % success rate.

　　Questions 19-21 are based on the conversation you have just heard.

　　Q19. What is the purpose of Doctor Jarvis Bastian’s experiment?

　　Q20. What were the dolphins supposed to do when they saw a steady light?

　　Q21. How did the second stage of the experiment differ from the first stage?

　　答案：

　　19. D) to see if dolphins can communicate with each other.

　　20. A) Press the right-hand lever first.