题目内容：

    On a Friday night, a poor young violinist was playing his violin at the entrance of the subway station. He played such great music that people slowed down to listen and put some money into his hat.

The next day, the violinist came to the entrance again. He put down his hat as usual. Beside the hat was a piece of paper with some words on it. It said, "George Black has put an important thing into my hat by mistake. Welcome to claim(认领)it. Soon the people were all interested in the words and wondered what it could be. After a while, a man rushed into the crowd, took the violinist's shoulders and said, “I knew you would certainly come.” The violinist asked, “Did you lose anything?” “Lottery(彩票).” The violinist took out a lottery ticket with Black's name on it. Black took it and danced happily.

Black was an office worker. He bought the lottery and won a prize of $500,000. But when he gave $50 to the violinist for his wonderful music, the lottery ticket was thrown in, too. The violinist was a college student. That morning, he was going to fly to Vienna for high education. However, when he found the ticket, he put off the flight and went back to the entrance.

Later someone asked the violinist why he didn't take the lottery ticket to pay for his high education. He said, “Although I don't have much money, I live a happy life. If I lose honesty, I won't be happy forever.”

1.When did the violinist come to the entrance of the subway again according to the passage?

A.On Saturday. B.On Sunday. C.On Friday. D.On Thursday.

2.What does the underlined word “it” in Paragraph 2 refer to?

A.The music. B.The hat. C.The important thing. D.The violin.

3.What was Black's job?

A.A college teacher. B.An office worker.

C.A university student. D.A music teacher.

4.Why did the violinist put off his flight to Vienna?

A.Because he was ill.

B.Because he wanted to make more money by playing the violin.

C.Because he liked playing the violin there.

D.Because he wanted to find the person who lost the lottery.

5.We can learn from the passage that the violinist was ______.

A.poor but honest B.rich and honest

C.poor and careless D.rich but careless