铃声响了,一节精采而又漂亮的数学课结束了。上课的是30岁出头,身材稍胖的小学数学女教师,在给学生教授“厘米、分米、米”的概念时。她让学生量完桌子、铅笔和手臂的长度后说:“让我们再找别的东西测量一下吧!”老师的话刚说完,一个一直没有得到发言机会的男孩站起来说:“老师,我想测量一下你的腰围。” The bell rang, and a brilliant and beautiful math class ended. The elementary school mathematics female teacher who was in his early 30s and was slightly fat was teaching the concept of “cm, decimeter, meter” to the students. She asked the students to measure the length of the desk, pencil, and arm and said: “Let’s find something else to measure!” The teacher’s words just finished, and a boy who has not been given a chance to stand up said: “” Teacher, I want to measure your waistline."