| Knowledge Item Name | upheaval |
| Curve | Normal |
| Question/Answer | |
| Review Date | 2020/4/5 10:15:06 |
| Next Review Date | 2020/4/11 10:15:06 |
| Review Times | 5 |
| An upheaval is a big change which causes a lot of trouble, confusion, and worry. |
| Grade | Easy Factor | Review Date | Next Review Date | |
|---|---|---|---|---|
| 3 | 1.3 | 2020/4/5 10:15:06 | 2020/4/11 10:15:06 | |
| 2 | 1.3 | 2020/3/23 22:47:51 | 2020/3/24 22:47:51 |