题目内容：

It was the last day of final exams in a university. On the steps of one building, a group of engineering students were discussing the exam. On their faces was confidence . This was their last exam and then they would graduate. With all these four years of college behind them, they felt ready to go into the world.

The professor had said they could bring any book or note they wanted, but they could not talk to each other. They went into the classroom happily. The professor gave them the papers. They smiled when they found that there were only five questions.

Three hours passed and the professor began to collect the papers. The students no longer looked so confident . The professor faced the class. No one spoke. They just held papers in their hands.

The professor then asked, "How many of you finished all five questions?"

Not a hand was raised.

"How many answered four?"

Still no hand.

"Three? Two?"

The students looked worried in their seats.

"One, then?" Certainly somebody finished one.

However, nobody replied. The professor put down the papers. "That is just what I thought," he said. "I just want to tell you that, even though you have finished four years of engineering, there are still many things about the subject you don't know. These questions you could not answer are quite common in everyday practice." Then he added with a smile, “You will all pass this course, but remember——even though you are now college graduates, your education has just begun."

1.When did the story happen?

A．At the beginning of a new term.

B．After graduating from the university.

C．On the first day of the final exams.

D．On the last day of the final exams.

2.Why were the student very confident at the beginning?

A．Because they knew the coming exam would be easy

B．Because they knew the coming exam would be difficult

C．Because they knew the coming exam would be strange

D．Because they knew the coming exam would be interesting

3.How did the students feel when the professor began to collect the papers?

A．Happy.            B．Confident.         C．Worried           D．Proud

4.Which is the best title for the passage?

A．Confident Students                      B．A Common professor

C．An Easy Exam                          D．So Much to Learn