我们把这篇初中二年级学生的习作发表在高中版上,是因为文中这道平面几何题的一些解法用到了高中数学知识.适合高中生朋友参考.据任课老师介绍.叶理同学在做这道作业题之前,自学了有关的高中知识,从而得到了文中的简捷解法.叶理同学这种好学求进精神很值得我们学习. (余炯沛) We published this junior high school sophomore student’s work on the high school version because some of the solution to this plane geometry problem used high school mathematics knowledge. It is suitable for high school student friends’ reference. According to the teacher’s introduction, Ye Li’s classmate is doing this. Before the course assignment, he learned the relevant knowledge of high school and obtained a brief explanation of the text. This kind of studious improvement spirit of Ye Li is worth our study. (Yu Pei Pei)