阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项 The policeman slowly walked along the street. It was about ten o'clock at night. The wind and light rain had kept most people at home.
Halfway down the street, the policeman saw a man leaning against(斜靠着) a door, with an unlighted cigar(雪茄) in his mouth. As the policeman walked up to him, the man spoke quickly. "It's all right, officer, " he said. "I'm just waiting here for an old friend. It's an appointment（约会） that was made twenty years ago. You think it funny to plan a meeting like this, don't you?"
The man lit (点燃) his cigar. The light showed a pale, square-jawed face with keen eyes. He was very well-dressed.
"Twenty years ago tonight, " the man went on, "I had dinner at a restaurant nearby with my friend Jimmy Wells. I was going to the West to try my luck, but Jimmy wanted to stay. We agreed to meet here again exactly twenty years for that date and time. That's why I'm here. "
"What happened to your friend?" asked the policeman.
"I'm not sure, " said the man. "We wrote to each other for a while and then stopped. But I'm sure if he is alive, he will keep his promise. We said we would meet at ten o'clock. "
"OK, I'll be on my way. Good night. " The policeman continued on his way, Bob waited about twenty minutes. Then, a tall man went straight to the waiting man.
"Is that you, Bob?" asked the newcomer. "Is that you, Jimmy?" cried the man in the door. "You've grown so tall. Let me have a good look at you. You don't look anything like Jimmy. " "You're right, " said the tall man. "I'm a police officer. You are wanted by the New York police. But, before we go to the police station, here's a note from your friend Jimmy Wells. "
Bob opened the small piece of paper. His hands shook as he read.
"Bob,
I was on my way to meet you as we had planned. However, when you lit your cigar, I saw it was the face of a man that is wanted by the police. Somehow, I couldn't do it myself. So I sent another police officer to do the job.
Jimmy"
