[填空题]Americans travel by air in (31) the same way as Europeans and the Japanese (32) by train. There are, in fact, not many railroad stations (33) in the USA, (34) the track is still being used, since most of America’s freight is still carried by (35) As for passengers, there is a vast network of airlines and airports in easy (36) in almost every American town. Airports, now the travel centers of the USA, (37) comfortable places (38) coffee shops and bars and clean restrooms.
Flying in America is (39) expensive than in many other countries, (40) the government subsidized air fares. Yet the different airlines are not state-owned and compete with one another for passengers.
Those who cannot (41) either train or plane take the Grey-hound bus. (42) transport system in the world carries so many passengers by night and by day. Drivers are (43)