MCQOPTIONS
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| 1. |
A huge radio telescope in Puerto Rico that has played a key role in astronomical discoveries, collapsed in December 2020. When was the telescope built? |
| A. | 1940s |
| B. | 1950s |
| C. | 1960s |
| D. | 1970s |
| E. | 1980s |
| Answer» D. 1970s | |