What are the things that are obviously serious but keep laughing?

1. One minute before the Chinese exam, everyone in the audience stared at the invigilator until the last girl couldn't sit still and asked the teacher, "Why don't you send out the barcode (equivalent to the admission ticket number)?"

2. When taking the math test, the teacher handed out the test paper five minutes in advance. I was fortunate to be one of the first 30 people in China to get the test paper. Then I used the extra five minutes to browse a lot of questions, and finally the math was 145. Now think about it. Without these five minutes, your grades may be five to ten points lower (there is not enough time).

The third thing is about my father. My father is not very human, so he is a little serious. On the morning of driving me to take the comprehensive exam, the entrance guard in the community was broken and I couldn't swipe my card. The security guard said that we were foreign vehicles and wouldn't let us go out. After quarreling for about five minutes, I couldn't bear it anymore and shouted at the security guard at the top of my voice. That is to say, the college entrance examination, life and so on, he finally let us go out.

After that, my dad and I didn't talk much on the road, so it was difficult to calm down. Taking a deep breath doesn't work. It really makes me angrier.

At the end of the examination room, my dad suddenly laughed: "That security guard has the same brain as a pig. I go home from that door every day and he doesn't even know me. " Then I looked at my dad and smiled. I have never seen him smile like this. But seeing him like this, my heart seems to be relieved a lot. I was still very angry when I suddenly thought of the security guard during the comprehensive exam, but I somehow shed tears when I thought of my father. Because he smiled at me.