接到呼救至出发的时间？
参考答案：
应该控制在5分钟之内（无特殊情况，接警1分钟，出车3分钟）。
— It _____ Yang Liwei about 21 hours _____ around the earth 14 times in the spaceship.
— How great he is! [ ]
A. spent, moving
B. took, traveling
C. took, to move
D. spent, to travel
