问题
选择题
There is no _________ that the Great Wall of China is one of the biggest man-made projects on the earth.
A．time
B．doubt
C．matter
D．mind
答案
答案：B
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There is no _________ that the Great Wall of China is one of the biggest man-made projects on the earth.
A．time
B．doubt
C．matter
D．mind
答案：B