There was once a professor of medicine, who was very strict with the students. Whenever he took the chair on the exam committee, the students would be in fear, because he was seldom pleased with the answers they gave. A student would be lucky enough if he or she could receive a good mark from him. At the end of the term, the students of medicine would take their exam again. Now a student entered the exam room and got seated before the committee. This student was a little nervous as he knew it would not be so easy to get through the exam at all.
The professor began to ask. The student was required to describe a certain illness, his description of which turned out to be OK.
Then the professor asked about the cure  for illness, and the student, too, answered just as right.
“Good,” said the professor, “and how much will you give the patient?”
“A full spoon”, answered the student.
“Now you may go out and wait for what you can get.”, said the professor. At the same time, the committee discussed carefully the answers the student had given. Suddenly the student noticed that there was something wrong with his last answer. “ A full spoon is too much,” he thought to himself. Anxiously he opened the door of the room and cried, “Mr Professor, I’ve make a mistake! A full spoon is too much for a patient. He can take only five drops.”
“I’m sorry, sir.” Said the professor coldly, “But it’s too late. Your patient has died.
The students were afraid of the professor because_________.

A．their answers seldom satisfied him

B．their answers often astonished him

C．they often angered and disappointed him

D．he often misunderstood them and give them bad markers

The student’s description of the illness was _____.

A．not correct	B．accepted
C．completely discouraging	D．not satisfied

Before he left the room the student was almost sure that ______.

A．he had made a mistake

B．his last answer was satisfying

C．he had passed the exam, and the only thing was to wait for the mark

D．he had not done well in the exam.

Which of the following is Not true?

A．Since one spoon is less than five drops, the patient will be all right soon if he takes only one full spoon at a time.

B．The doctor will be in trouble if he’s given the patient a full spoon.

C．The patient will be in danger if he’s taken as much as a full spoon.

D．If the patient wants to remain safe, he should take no more than five drops at a time.

Which guess is the most reasonable from the passage?

A．The student must have passed the exam.

B．The professor must have been very pleased and given the student a good mark.

C．The student must have been very happy when he heard, “Your patient has died.”

D．The students may not have passed the exam.