这是个简易成绩统计系统，能完成同学各科成绩的总分、排名、平均、成绩的考核方法、计算方法、各个学员的成绩在所有同学中的位置等 -This is a summary scores, students can complete the combined results branches, ranking average, performance evaluation method and the method of computation, all the outcomes of all stud