A teacher asked one of his students: "What is the longest and what is the shortest?"

老师问他的一个学生:"什么最长,什么最短?"

The student answered immediately: "The last several minutes of a class is the longest, while the last several minutes of an exam is the shortest."

一个学生马上回答说:"下课前的几分钟最长了,考试前的几分钟最短."