The bullet (子弹头) train D106 from Changsha to Shanghai has a short stop in Quzhou for only one minute.
Named  21  the letter D, the new trains run at speeds of 200 to 250 kilometers one hour. This is much 22   than Z-type and T-type trains. For example, it  23  take people 12 hours to travel from Shanghai to Beijing. But now it only  24  10. The most interesting part of the bullet trains is the revolving (旋转的) seats. People can adjust (调整) their seats as they like, so that  it  is   25   for you to talk with others around you face to face. The new trains run   26   big cities. They   27  the long trips much faster and more comfortable.
However, many passengers still won’t choose the bullet trains   28   some reasons. The ticket
 29   of the bullet trains are much higher. For example, a hard seat ticket from Beijing to Jinan is only 90 yuan for T-type trains. But on the bullet trains all the seats are   30 . And they cost 153 to 184 yuan. On the other hand, the bullet trains don’t stop at small stations.

A．with B．begin C．at D．after

A．fast B．faster C．quickly D．slower

A．would B．will C．used to D．was used to

A．cost B．takes C．need D．spends

A．difficult B．hard C．easily D．easy

A．between B．among C．along D．around

A．get B．let C．make D．allow

A．because B．for C．since D．with

A．prices B．speeds C．costs D．seats

A．hard B．big C．expensive D．soft