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| 1. |
The Korea Superconducting Tokamak Advanced Research, or KSTAR, has set a new world record, reaching an ion temperature of over 100 million degrees Celsius for a record how many seconds? |
| A. | 10 |
| B. | 15 |
| C. | 20 |
| D. | 25 |
| E. | 30 |
| Answer» D. 25 | |