单选题
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
【正确答案】
D
【答案解析】
[解析] which指代top of Mount Qomolangma，彩虹出现在山顶上，故用above which。
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