阅读短文，选择正确答案。
One day I happened to meet an Englishman in the street and soon we began to talk. As I was talking about
how I was studying English, the foreigner seemed to be very surprised, gently shaking his head and saying "You
don't say!" I was puzzled, and I thought, "Perhaps this is not a right thing to talk about." So I said to him. "Well,
shall we talk about the Great Wall? Have you ever been there?"
"Certainly! Everyone at home will laugh at me if I leave here without seeing it. The Great Wall is wonderful!"
"Yes, it is one of the wonders in the world. And people of many countries have come to visit it." As I went on
more about it, he stopped me again, "You don't say!"
I couldn't help asking, "Why do you ask me not to talk about it?"
"Well, I don't ask you to do so," he answered, greatly surprised.
"Didn't you say 'You don't say'?" I asked again.
Hearing this, the foreigner laughed loudly. He began to explain, " 'You don't say!' means 'Really?'. Perhaps
you know little about English idioms (习语)."
Wow! How foolish I was! Since then I began to learn more English idioms.
1. The writer was puzzled (疑惑) because _________.
[ ]
A. the foreigner has some trouble in understanding him
B. the writer himself didn't understand the meaning of "You don't say!"
C. the foreigner was not polite
2. What made the foreigner laugh?
[ ]
A. The English idiom.
B. The writer's talking about the Great Wall.
C. The writer's question.
3. The story probably happened in _______.
[ ]
A. China
B. America
C. England
4. The writer was puzzled ______ in the passage.
[ ]
A. once
B. twice
C. three times
5. The English idiom "You don't say!" means "________".
[ ]
A. Really?
B. You're right.
C. Thank you.