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  Many countries are working to improve railroad passenger service along heavily traveled routes that run between cities. Because they use less energy perpassenger than any other means of transportation, modern railroads could help save the world’s energy resources(资源)and reduce air pollution.

  The MLV is a new type of high-speed vehicle, which carries people from one city to another. An MLV track is made up of a single rail that lies under the centre of the train, but the train doesn't touch the track when it is moving. MLV’s are powered by electric motors. A powerful magnetic(磁的)force, produced by magnets in both the motor and the track itself. Levitates(悬浮)the train. This magnetic force holds the train about 15 cm above the rail and moves it forward. The train, which was designed by French, German, and Japanese engineers, is expected to travel more than 480 km per hour.

1An MLV is a sort of ______.

[  ]

Astrong magnitic force

Bspecial energy resource

Cmodern passenger train

Dstraight railroad

2When an MLV is running, there is powerful magnetic force in ______.

[  ]

Athe motor only

Bthe track only

Cnot only the motor but also the track

Dneither the motor nor the track

3From the sentence”This magnetic force holds the train about 15 cm above the rail and moves it forward.” We know that when moving forward, an MLV ______.

[  ]

Ais lifted above the track

Btouches the rail all the time

Cleaves the track from time to time

Dfloats high above the rail

4Which of the following is NOT TRUE?

[  ]

AAn MLV runs much faster than an ordinary train.

BEngineers designed the MLV in order to improve railroad goods service.

CModern passenger service could help save energy resources.

DAn MLV doesn’t produce waste gases.

5The reason to improve railroad passenger service doesn't lie in that ______.

[  ]

Aenergy resources ought to be saved

Bpeople want to reduce air pollution

Ctransportation problems remain unsettled

Dmore and more passengers don't want to travel by train

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[  ]

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