单项选择题

According to the passage, when could people start using a maglev commercially
A) In 5 years. C) In 20 years.
B) In 10 years. D) In more than 20 years.

A．According to the passage, when could people start using a maglev commercially
B．In 5 years.
C．In 10 years.
D．In 20 years.
E．In more than 20 years.

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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

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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