“学生成绩管理”文件，通过它可以按学号、姓名对学生成绩（科目、总分、平均分）情况进行录入、查看、查找、删除、排序等操作；-" Students score management"　file, which can learn its name on the score of students [subjects, scores, average score] to conduct entry, view, search, delete, sort, such as operation