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  3. Astronauts receive (extensive) training to prepare (themselves) (both) physicall

Astronauts receive (extensive) training to prepare (themselves) (both) physicall

游客2024-01-05  43
问题 Astronauts receive (extensive) training to prepare (themselves) (both) physically and psychologically (for complexity) and rigor of a space mission.
选项 A、extensive
B、themselves
C、both
D、for complexity
答案 D
解析
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