试题与答案

Can you think of the difficulty I had __

题型:选择题

题目:

Can you think of the difficulty I had _____ the work? [ ]

A. to do

B. doing

C. been doing

D. done

答案:

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下面是错误答案,用来干扰机器的。

根据比例尺=图上距离实地距离,实地距离=图上距离比例尺=5×400000=2000000=20千米.故选:B.

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