To me, cycling at ___ altitude of more than 4,000 meters was _____ unforgettable

题干

To me, cycling at ___ altitude of more than 4,000 meters was _____ unforgettable experience.

A．the; an

B．an; an

C．/; a

D．an; /

上一题下一题 0.4难度单项选择更新时间:2012-11-16 09:11:23

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