How long did it actually take to build the Beijing-Zhangjiakou Railway?
How long did it actually take to build the Beijing-Zhangjiakou Railway?
A.Six years.
B.Five years.
C.Four years.
D.Three years.
正确答案:Four years.
How long did it actually take to build the Beijing-Zhangjiakou Railway?
A.Six years.
B.Five years.
C.Four years.
D.Three years.
正确答案:Four years.
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