D) They may both lead to surprising findings.(B)

　　20. A) To show how simple the mechanical aids for diving can be.

　　B) To provide an excuse for his changeable character.

　　C) To explore the philosophical issues of space travel.

　　D) To explain why he took up underwater exploration.(D)

2005年12月四级听力原文

　　1. W: Carol told us on the phone not to worry about her. Her left leg doesnt hurt as much as it did yesterday.

　　M: Shed better have it examined by a doctor anyway. And I will call her about it this evening.

　　Q: What does the man think Carol should do?

　　2. M: There is a non-stop train for Washington and it leaves at 2:30.

　　W: Its faster than the 2 oclock train. Besides, we can have something to eat before getting on the train.

　　Q: What do we learn from the conversation?

　　3. M: Hi, Melissa, hows your project going? Have you thought about going to graduate school? Perhaps you can get into Harvard.

　　W: Everything is coming along really well. I have been thinking about graduate school. But Ill talk to my tutor Dr. Garcia first and see what she thinks.

　　Q: What do you learn about the woman from the conversation?

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