Question

By nine o'clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, _________ appeared a rare rainbow soon.

1. A.
   of which
2. B.
   on which
3. C.
   from which
4. D.
   above which

Answer 1

D
本题考查“介词+关系代词”的定语从句的用法。根据句意，在珠峰的上方出现了罕见的彩虹，排除A、C项，B项指位于某物上而且与其表面接触，其位置不一定在上方。故选D。