Question

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

A. of which         B. on which       C. from which     D. above which

Answer 1

D

解析:

考查非限制性定语从句的介词＋which的用法，原句可还原成…a rare rainbow appeared above …。根据选项我们已经知道了考查的大方向，就是需要我们找到合适的介词搭配。