5.They were from their home base about 250km .
他们离家里大概250千米.
6.It would take them about 24 hours walk to back to the base.
这会花费他们24小时步行回家.
7.The teacher asked the students to get there as soon as possible.
老师让学生们尽快到那里.
8.They had a crash in a small spaceship.
他们在一个小飞船里坠机.
9.They saved the things from the below crash.
他们在坠机之前救得了一些东西.
10.Then your list tell about the calss.
然后将你的清单讲给同学们.