单项选择题

The construction of the transcontinental railroad took （）

A．9 years
B．4 years
C．7 years
D．3 years

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热门试题

单项选择题

What most likely made people think about a transcontinental railroad（）

A．The possibility of government support for such a task.
B．The need to explore Utah.
C．The need to connect the east coast with the west.
D．The need to develop the railroad industry in the west.

单项选择题

The best title for this passage would be （）

A．Children Rule the World
B．Children Learn Reasoning Using LOGO
C．Computer Languages
D．The Unreal World of the Child and the Computer