There was a pop quiz today.

Victor： Hi,大家好,我是Victor，
Nancy： Nancy!
Victor： 今天我们讨论的Topic是：
Nancy：There was a pop quiz today.
Victor：今天有突击测验。
Nancy：In American schools, there are three basic types of exams – a quiz, which is about twenty minutes, a test, which takes a whole class period (about 40 minutes) and an exam, which takes about 2 hours.
Victor：美国学生有三种考试，小考20分钟，中考40分钟，大考2小时。
Nancy：A pop quiz is a surprise quiz,
Victor：大家要小心一点哦！
Nancy：There was a pop quiz today.
Victor：There was a pop quiz today.
Nancy: That’s all for today. See you!
Victor:  See you!