听力原文：W: Excuse me, sir. I'm new here. Could you show me how to make a phone call? M: Sure. Have you got any small change? W: Yes, I've got a quarter and some dimes and nickels. M: Quarter will do. Now, first insert the quarter into the hole. When you hear the dial tone, a steady buzzing sound, dial the number you want. W: If the line is busy... M: When you hear a short regular beeping sound about every second, you hang up and your coin will be returned to you. Then do it all over again. W: The trouble is I don't know the phone number of my friend. M: That's easy. Here are two phone books. This is what we call the 'White Pages', which lists the names, addresses, and tele-phone numbers of people in the area. Remember, the names are listed alphabetically with the last or surname first. W: What about the other book? M: This is the 'Yellow Pages', which lists all businesses, hotels, theaters, schools and services in the area. This listing is arranged according to the type of establishment. W: Thanks. I'll have a try. M: Go ahead. (20)