2. 外语
  3. Astronauts receive (extensive) training to prepare (themselves) (both) physically and psychologically (for complexity) and rigor

Astronauts receive (extensive) training to prepare (themselves) (both) physically and psychologically (for complexity) and rigor

admin2005-01-30  68
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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