問題詳情

55. By what time had almost 3,000 miles of track been laid?
(A) 1830
(B) 1836
(C) 1840
(D) mid-1860s

參考答案

答案:C
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

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