问题
单项选择题
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
答案
参考答案：D
解析： which指代top of Mount Qomolangma，彩虹出现在山顶上，故用above which。