单项选择题

Flight to the unknown
The world’s airline industry will change (29) quickly in the next twelve months than in any year (30) aviation began. Watch out for the (31) trends:
* Passenger traffic will go (32) by 4% a year in Europe. Asia will see even faster growth-up (33) 9%ayear.
* Flight delays will become a nightmare. (34) travel under 700kin,high speed (35) will be the answer. Paris to London by train (36) two hours; by plane it can take up to three-hour to city centre.
* Air fares will not fall. Last year, airlines lost money (37) they will have to increase prices, or go bankrupt.
* There will be more competitions. More small airlines will start (38) . Good. But as the number of flights increases, so will the congestion in the airports. (39) governments will need to spend more money on them. (40) there will be even more delays.

37（）

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