请教几道语法题

prayforeverUID: 2158111

34. Astronauts receive extensive training to prepare themselves both physically
and psychologically for complexity and rigor of a space mission.

31. The spice cinnamon and the drugs cascara and quinine all come from bark,
the protective out layer of stems and roots of woody plants.

34D31B
为什么啊谢谢~

mwhUID: 201249

34，改为for the complexity
31，改为outer