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%. C) 75%.
B) 50%. D) 80%.

A．For a commuter trip of 500 miles, about how much less fuel would maglev train use compared to a small plane
B．25%.
C．50%.
D．75%.
E．80%.
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单项选择题
Why could maglev trains replace short-flight commuter aircraft A) Maglev trains are faster. C) Maglev trains are more fuel-efficient. B) Maglev trains are cheaper. D) Maglev trains are safer.
A．Why could maglev trains replace short-flight commuter aircraft
B．Maglev trains are faster.
C．Maglev trains are cheaper.
D．Maglev trains are more fuel-efficient.
E．Maglev trains are safer.
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.
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