 |
| |||
| primary standard | |||
| 一级 标准: 20 phrases in 8 subjects |
| Automobiles | 1 |
| Cryptography | 1 |
| Ecology | 3 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 10 |
| United Nations | 1 |
| Water resources | 1 |
|
| |||
| primary standard | |||
| 一级 标准: 20 phrases in 8 subjects |
| Automobiles | 1 |
| Cryptography | 1 |
| Ecology | 3 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 10 |
| United Nations | 1 |
| Water resources | 1 |