听力原文： A man once said how useless it was to put advertisements in the newspapers. 'Last week,' he said, 'My umbrella was stolen from a London church. As it was a present, I spent twice its worth in advertising, but didn't get it back.' 'How did you write your advertisement?' asked a businessman. The man took out of his pocket a slip cut from a newspaper. The other man took it and read, 'Lost from the City Church last Sunday evening, a black silk umbrella. The gentleman who finds it will receive ten shillings on leaving it at No. 10 Broad Street.' 'Now,' said the man, 'I often advertise, and find that it is always useful. But the way in which an advertisement is expressed is of great importance.' The businessman then took a slip of paper and wrote: 'If the man who was seen to take an umbrella from the City Church last Sunday evening does not wish to get into trouble, he will return the umbrella to No. 10 Broad Street. He is already known.' This appeared in the newspaper, and on the following morning, the man was astonished when he opened the door. In the door way lay at least twelve umbrellas of all size and colors that had been thrown in, and his own was among the number. Many of them had notes tied to them saying that they had been taken by mistake, and begging the loser not to say anything about the matter. (30)