One day, I happened to talk to a stranger (陌生人) on the bus. When he found out that I was from Chicago, he told me that one of his good friends lived there and he wondered if I happened to know him. At first I wanted to say that it was foolish (愚蠢的) to think like that, for from all the millions of people in Chicago, I could not possibly know his friend. But, instead, I just smiled and said that Chicago was a very big city. He was quiet for a few minutes, and then he began to tell me all about his friend.
He told me that his friend was an excellent tennis player and that he even had his own tennis court (网球场). He added that he knew a lot of people with swimming pools, but that he only knew two people in the country who had their own tennis courts. And his friend in Chicago was one of them. I told him that I knew several people like that, for example, my brother and my next-door neighbor. I told him that my brother was a doctor and he lived in California. Then he asked where my brother lived in California. When I said Sacramento, he said that last year his friend spent the summer in Sacramento and lived next door to a doctor. The doctor had a tennis court. I said that my next-door went to Sacramento last summer and lived in the house next to my brother’s. For a moment, we looked at each other, but we did not say anything.
“Would your friend’s name happen to be Roland Kirkwood?” I asked finally. He laughed and said, “Would your brother’s name happen to be Dr. Ray Hunter?” It was my turn to laugh.
Which of the following is true?

A．The story happened in Chicago.

B．The writer’s brother lived in Sacramento.

C．Both the writer and the stranger lived in Chicago.

D．Both the writer and his brother lived in California.

The writer said that Chicago was a very big city. That means _____________.

A．it was possible for him to happen to know the stranger’s friend

B．he didn’t want to look for the stranger’s friend

C．he didn’t know the stranger’s friend

D．it was impossible to find the stranger’s friend

How many persons does the story involve (涉及)?

A．Four.

B．Five.

C．Six.

D．Seven.

Which is the best title of the story?

A．On a bus	B．Two tennis players
C．One in a million	D．Chicago is a large city