20 世纪初,人类可以享受的最新的交通工具是(    )①汽船 ②汽车

20 世纪初,人类可以享受的最新的交通工具是   

①汽船 ②汽车 ③飞机 ④火车

A. ①②     B. ③④      C. ②③      D. ①④

答案

C

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