系统解析:M: Hello, Julia. Have you heard about the chess match?
W: Not yet, anything special?
M: Well, I suppose you would never be able to guess who came in first.
W: Is it Carl, or David? Those two are very competitive.
M: I'm afraid you got the wrong ones. The champion was John. It is a real surprise to everybody. He beat 12 other players, lost only 3, and played no draws.
W: John is a lucky horse. How about Carl and David?
M: Well, Carl only finished seventh, and David was better. He finished sixth.
W: Anyway, I'm still wondering how John could be so successful.
M: I don't know either. But I heard that both Carl and David were suffering from the flu at the time.