单项选择题

A．It is more comfortable than a conventional train.
B．It doesn’t require much track maintenance.
C．It doesn’t remain in any station very long.
D．It carries more passengers than a conventional train.
<上一题 目录 下一题>
热门 试题

单项选择题
A．It uses nuclear energy.B．It rests on a cushion of professional air.C．It flies over magnetically activated tracks.D．It uses a device similar to a jet engine.
A．It uses nuclear energy.
B．It rests on a cushion of professional air.
C．It flies over magnetically activated tracks.
D．It uses a device similar to a jet engine.
单项选择题
A．To learn how to prevent a bone disease.B．To understand differences between bone tissue and other tissue.C．To find out how specialized bone cells have evolved.D．To create artificial bone tissue.
A．To learn how to prevent a bone disease.
B．To understand differences between bone tissue and other tissue.
C．To find out how specialized bone cells have evolved.
D．To create artificial bone tissue.
相关试题