Bynineo’clock,alltheOlympictorchbearershadreachedthetop...

問題詳情：

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

【回答】

D

知識點：定語從句

題型：選擇題