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.

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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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Mountainous areas have a poorer TV ______ than cities. A) receipt C) reaction B) reception D) response

A．Mountainous areas have a poorer TV ______ than cities.
B．receipt
C．reception
D．reaction
E．response

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.

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.