问题
单项选择题
（）with the size of the whole earth, the highest mountains do not seem high at all.
A.If you compare
B.Compare them
C.When compared
D.A comparison
答案
参考答案：C
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（）with the size of the whole earth, the highest mountains do not seem high at all.
A.If you compare
B.Compare them
C.When compared
D.A comparison
参考答案：C