In the 19th century，trains were the best way to travel long distances（距离） over land．Trains were fast and convenient．In the 20th century，airplanes replaced trains for long﹣distance travel．Today，however，high﹣speed trains are attracting（吸引）passengers again．

France has a train called the TGV．TGV is"Train a Grande Vitesse"in French，which means"high﹣speed train"．A TGV train operates at speedup to 300km/h．The passengers can travel from Paris to Marseilles in only four hours．

The first country to have a high﹣speed train is Japan．The Bullet train offers a fast，smooth ride between Tokyo and other major cities in Japan．This train operates at speed up to 210km/h and can travel between Tokyo and Osaka in just three hours．

China has the worlds longest high﹣speed rail network with over 19，369.8km of track（轨道） in service from December 2014．China's high﹣speed rail system also includes the world's longest line，the 2.298km Beijing﹣Guangzhou high﹣speed railway．China's high﹣speed trains are marked with"CRH"（China's railway high﹣speed）．They are also called Hexie Hao．The fastest trainsets，CRH380BL，reached the highest test speed of 487.3km/h．

根据短文内容，选择最佳答案．

56．What does the underlined phrase" at speed"in the second paragraph mean． 　　

A．	fast
B．	late
C．	slowly
D．	deeply

57．The first country to have a high﹣speed train is 　　．

A．	China
B．	Japan
C．	France
D．	America

58．which is the world's longest high﹣speed railway line？ 　　

A．	The line from Beijing to Shanghai．
B．	The line from Paris to Marseilles．
C．	The line from Beijing to Guangzhou．
D．	The line from Tokyo to Osaka．

59．The highest test speed of GRH380BL was 　　．

A．	210km/h
B．	over double the speed of the Japanese Bullet train．
C．	300km/h
D．	more than double the speed of the French TOV train．

60．What's the main idea of this passage？ 　　

A．	The development of the French TGV train．
B．	The history of the Japanese Bullet train．
C．	The tests of the Chinese CRH380BL trainsets．
D．	The introduction of high﹣speed trains．