题目内容：

A doctor was once teaching a class of medical students at a famous hospital in Edinburge. An injured man was brought in, and the doctor turned to one of his students and asked him, “What’s wrong with this man ?”

“I don’t know, sir,” the student answered. “Shall I examine him and find out?”

“There’s no need to examine him,” said the doctor. “You should know without asking questions. He has hurt his right knee. Didn’t you notice the way he walked? He hurt it by burning it in the fire. You see his trousers leg is burnt away at the knee. This is Monday morning. Yesterday was fine, but on Saturday the roads were wet and muddy. The man’s trousers are muddy all over. The man fell down on Saturday night.”

The doctor then turned to the man and said, “You had your pay on Saturday and went to a public house and drank too much. You got muddy and wet on the way home. Because you had drunk too much, you fell on the fire and burnt your knee. Is that right?

“Yes, sir,” said the man.

1.The medical students were having a lesson ______.

A. at the library                      B. in a classroom

C. at a well-known hospital            D. in a medical school

2. The man hurt his knee  _______.

   A. on Monday   B. on Sunday night  C. on Saturday night     D. yesterday

3. How did the doctor know that the man burnt his knee?

   A. From the way he walked.     B. By seeing his trousers leg is burnt away at the knee. 

C. By seeing the man’s trousers are muddy all over.     D. Both A and B  

4.Which is the right order according to the passage?

 ① He burnt his knee. ②He got drunk. ③He fell down and got muddy. ④He had his pay.

A. ①②③④     B. ④③②①         C. ③④①②          D. ④②③①

5. From the passage we know that _______ is very important for medical students.

   A. watching and thinking            B. taking good care of others

   C. learning from others              D. teaching