听力原文：W: All right, that comes to ＄20.75. Do you have one of our store membership cards

M: What is that？

W: It's a free card which allows our customers to receive special discounts. You simply need to fill out our membership application form.

M: No, thank you. I'm a little pressed for time.

W: How will you be paying for that？ Will that be cash or credit？

M: I think I'll pay with my card.

W: OK. Is that a credit card or a debit card？

M: I'm sorry. I don't understand your question. What is the difference？

W: A credit card bills you once a month; a debit card deducts the money directly from your bank account.

M: Well, this is an ATM card issued by my bank. It's connected to my bank account. Can I use that？

W: Sure, that's a kind of debit card. Please press the button marked "DBT" and swipe your card through the machine.

M: OK. And now what do I do？

W: Please enter your pin number, the identification number which verifies your identity.

M: OK. And now？

W: Paper or plastic？

M: I'm sorry？ What did you say？

W: I'm going to pack your groceries. What kind of hags would you like, paper or plastic？

M: Plastic, please. Wow, you really have to make a lot of decisions in an American grocery store.

(20)

A．Apply immediately with any credit card.

B．Fill out the membership application form.

C．Pay a membership fee.

D．Buy certain items in the store.