大小单双的公式

简介：He first pondered for half a minute, pretending to be deep in thought, and said: I reviewed two sentences all night, read one sentence, and forgot three lines. When I met friends on the road, my face was all sad, and I looked at death as if I were returning to the examination room. I made cheat sheets and occupied my seat. After finishing the exam, my heart felt cold, and I said to you, I will die now. After checking my results, I looked back at the people in the past, but I died alone.