I wasthe edge of the canyon. A river was

问题选择题

I was the edge of the canyon. A river was the bottom of the canyon.

A．at；on

B．on；in

C．on；at

D．in；at

答案

答案：C

题目分析：句意:我在峡谷的边缘，一条河就在峡谷的底下。本题考查介词，第一个空是短语on the edge of 在……的边缘；第二个空是at the bottom of 在……的底下。故应选C。