填空题

High-speed trains are often the fastest way to travel between city centers in Europe, beating short-haul flights for journeys of up to 550 kilometers. At speeds of up to 320 kilometers an hour, the train certainly takes the strain; compared to airports, high-speed train stations are stress-free citadels (要塞) of peace.
Trains also score well on that shifting equation of comfort, convenience and cost: On short-haul flights, flying time can be as little as 20 percent of total journey time. What counts most with mil travel is the quality of uninterrupted time from the moment you board to the time you arrive: a train station’s 10-minute average check-in time for business travelers includes going through security. Take the lap-top and do a pile of work in peace. A study shows that business travelers are willing to travel up to four hours on a high-speed train because of" increased productivity" compared with airline travel, while the limit for leisure travelers is trips of up to six hours.
Railteam, similar to an airline alliance such as Oneworld or Star Alliance, aims to offer seamless high-speed train travel across Europe. If, for any reason, a traveler misses a connection because of a late-running train, Railteam will ensure that he can take the next available train, irrespective of what type of ticket he holds. Frequent business travelers have access to lounges in over 30 train stations.
The service’s double-decker train is a version of the modified V150 TGV train ( named for traveling at 150 meters per second) which broke the world rail speed record on April 3th,2007, by traveling at 575 kilometers an hour on a special section of track between Paris and Strasbourg-faster than some light airplanes.
TGV Est trains come with spacious and reclining seats, adjustable lighting and special" family" areas in second class; first-class passengers have the use of meeting spaces for up to three people, Wi-Fi(无线局域网络) connectivity and individual electrical outlets that make it convenient to work a-long the way.
While high-speed trains challenge airlines on short routes, there are synergies (协同配合) between the two kinds of transport. Air-rail links to high-speed rail stations can be found at major airports such as those in Paris, Amsterdam, Frankfurt and Brussels. If comfort, convenience and cost are considered simultaneously, it is advantageous to travel by ______.