听力原文：W: Hello, Tom.M: Hello, Mother.W: I want to buy David a pet for his birthday.M: Y

听力原文：W: Hello, Tom.

M: Hello, Mother.

W: I want to buy David a pet for his birthday.

M: Yes, I know.

W: What shall I give him？

M: Why don't you buy him a dog？ He likes dogs because they are friendly.

W: But he' s already got a dog.

M: Yes, that's true. What about buying a cat？ Cats eat mice.

W: But he's got a pet mouse. Prod lie can't take a eat for a walk, can he？ Anyway, I want to buy him something unusual.

M: You could buy him a rabbit.

W: A rabbit？ What can he do with a rabbit？

M: Well, rabbits are very pretty. He can feed it, and play with it. He can build a house for it. He likes building things.

W: I don't think that's a very good idea. Rabbits aren't interesting. What about a snake？

M: A snake？

W: Lots of people have snakes. They me very clean and easy to look after. And they're very unusual pets. David likes snakes.

M: I don' t. No, don' t buy a make. I don' t want to open my bedroom door and find a snake.

W: What do you suggest then？

M: Why don' t you buy a bird？ They've got some parrots at the market. They've very pretty and they can talk, too. Parrots are unusual.

W: I don't like birds. They everywhere, and they make a lot of noise and a lot of mess.

M: Oh, I really don' t know what else I can suggest.

W: I want to buy something unusual.

(23)

A．Because David liked animal.

B．Because it was David's birthday.

C．Because she liked pets.

D．Because David had asked her for one.