单项选择题

Argonne believes that people should regard maglev transportation as ______.

A．safe, efficient high-speed trains
B．the most exciting form of transportation for the future
C．a kind of aircraft
D．the most economical form of transportation

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热门试题

单项选择题

For a commuter trip of 500 miles, about how much less fuel would maglev train use compared to a small plane

A．25%.
B．50%.
C．75%.
D．80%.

单项选择题

What is the best title for this passage

A．The Future of Transportation.
B．Argonne Develops Maglev Train.
C．The Disadvantages of Commuting by Airplane.
D．Commuting in the Future.