A．It uses nuclear energy.
B．It rests on a cushion of pressurized air.
C．It flies over magnetically activated tracks.
D．It uses a device similar to a jet engine.
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A．It is more comfortable than a conventional train.
B．It doesn't require very much track maintenance.
C．It doesn't remain in any station very long.
D．It carries more passengers than a conventional train.
A．Social work.
B．Medical care.
C．Applied physics.
D．Special education.
A．the timely advice form her friends and relatives
B．the two-year professional training she received
C．her determination to fulfill her dream
D．her parents' consistent moral support