ϵͳ˵

ĿǰϵͳΪ򵥣ԺдӭṩĽ顣

-----------------------------------
  ѧ书     Ч
1-9      8     100%  Χͱֵ˫ɳ 
10-29    9     100%  Χֵ˫ɳ
30-49    10    50%   Χֵ˫ɳ
50-69    11    30%   Χֵ˫ɳ
70-89    12    30%   ֵ˫ɳ
90-99    13     /      /
100-     15     /      /
