这日,悟空做了个梦,梦见一群中小学生在一起讨论问题。其中一人在黑板上画了个“○”,问大家这是什么。中学生很规矩地说这是“零”“、氧”和字母“0”,而小学生则花样百出,什么太阳啦、月饼啦、镜子啦……无奇不有,最后竟成了老师发怒的眼睛!悟空醒来,不觉好笑,但因只是一个 On this day, Wukong made a dream and dreamed that a group of primary and middle school students discussed the issue together. One of them drew a “○” on the blackboard and asked everyone what it was. The middle school students ruled that it was “zero,” “oxygen,” and the letter “0,” and the pupils were full of tricks. What were the sun, mooncakes, mirrors, and no surprises? Finally, they became teachers’ angry eyes! Come, feel funny, but because it’s just one