| 8 9 1 2 | | | 1 2 | | | 1. | 0 5℃ | | | | 3 5 | 5% 2 3 | | | 2. | | | | 10 30 | 5 30 | | | | 3. | | | 3 | | 1 3 | | | | | 4. | | | | | | 5. | | 24 | | 6. | | | | 7. | | | 8. | 7 10 | |