MCQOPTIONS
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| 1. |
In a first, NASA will launch a spacecraft that will collide with an asteroid in ________ to demonstrate a planetary defense technique. |
| A. | 2021 |
| B. | 2022 |
| C. | 2023 |
| D. | 2024 |
| E. | 2025 |
| Answer» C. 2023 | |