小测验：选择正确的单词

1. climb down
   v.爬下,让步,撤回
   
2. climb up
   v. 爬上
   

1. They climbed over the snow covered mountain.
   他们爬过雪山。
2. Climb down the tree at once.
   立刻从树上爬下来。
3. He was heated by the long climb.
   长时间攀爬使他浑身发热。
4. The cat burglar must have climbed up that drainpipe.
   飞贼一定是从排水管爬上去的。
5. Climbing all these stairs is a real sweat.
   登上所有这些楼梯可真费力气.

　3个名词解释

　6个动词解释