In life, people come across many experiences, which they remember all their lives. I had a similar experience, too.
It was the day of my last paper of the final exam. My uncle had invited me to spend my vacation with him. I was especially excited about the invitation that my uncle had given me to stay with him for a few days in Cambridge.
On that day we got into our classroom. The teacher quickly handed out the paper. The exam would last two hours and some of the expected questions came. I finished it almost forty-five minutes earlier. But since it was a rule not to collect the paper before the allotted（规定的）time. I had to sit till the teacher collected the paper. I checked my paper twice and corrected some of the mistakes in it. I started thinking about the place my friends and I had planned to go to after the exam. The time seemed to be endless. So I thought of drawing something on the paper and turned it overleaf. I was shocked to see that the page which I had supposed to be blank had four more questions on it which carried 20 marks and would take at least half an hour to complete. There were only 10 minutes left. I was so nervous that I could hardly write anything. They were the sub-questions（小题）of the last question. Suddenly our physics teacher came in and told all of us that in the last question, out of 6 sub-questions only 2 had to be solved. I felt very relieved.
From then on, I realized that my anxiousness and excitement could have cost me to lose 20 marks and decided never to make such a mistake again.
Which of the following statements is true?

A．The writer didn’t work hard at physics.

B．The writer lost 20 marks for the last question.

C．The writer made some mistakes during the exam.

D．The questions on the paper were difficult for the writer.

The underlined word “relieved” means ________.

A．less worried	B．less afraid
C．more surprised	D．more nervous

We can infer（推断） from the passage that _____________.

A．the writer did 2 sub-questions of the last question

B．the writer finished doing all the sub-questions

C．the writer spent 45 minutes finishing the paper

D．the writer got full marks in the physics exam

We can learn from the passage that we should _____________.

A．learn some exam skills

B．be careful not to make mistakes in the exam

C．try our best to do well in the exam

D．concentrate on what we are doing