听力原文：W: Hello, everyone. Welcome again to Consumer's Choice, which is the last program in our present series, isn't that right? M: Yes, that's right. The story of how a listener's determination has qualified her for our Consumer of the Month award. W: This is the story of Miss Patty Ching who went on a holiday to Europe last month. This was her first ever trip abroad and one for which she'd been saving for 10 years. (19) She took a lot of photos. About 360 photographs. When Patty got home, she gave ail her photos to Top-class Photo Services for developing and they vanished. She never saw them again. M: What did she do next? W: So she wrote them a letter, telling them to pay up in ten days or she would take them to court. She received no reply. So she took them to court. Patty's case provides a lesson to us all. (20) If we want our fights as consumers, we've got to fight for them. (21) So for her determination and spirit we name Patty our Consumer of the Month. M: Thank you, and now I'd like to deal with the problem that many of our listeners write about-Sale prices. When we go to a sale and see a sign on something saying 50% off or 300 dollars reduced to 100, how do we know the prices really have been reduced? W: For the moment all we can do is to complain to the store's management and bring these cases to the attention of the public. Bad publicity might help to put a stop to this dishonest practice. (20)