采纳率: 55.3%
浏览 5
| id | grand | student_id |
| 1 | 10 | 1 |
| 2 | 10 | 1 |
| 3 | 10 | 1 |
| 4 | 10 | 2 |
| 5 | 11 | 2 |
| 6 | 12 | 3 |
| 7 | 10 | 3 |