While MaxSaver rates were low, they also had restrictions. Tickets could not be __10__ or flight times modified after purchase. Passengers would have to stay over either a Saturday or Sunday. Reservations had to be made at least two days __11__, and there were limited seats available.

　　Three weeks after MaxSaver rates were __12__, American Airlines announced plans to raise its discount fares and require 30-day __13__ purchasing for its lowest fares. It felt it could not continue at the rates in effect. However, just 10 days __14__, Ameriacn Airlines had to revise its plan. Texas Air refused to abandon the MaxSaver fare; it even extended the program into the busy summer season. Competitors went along and the price war raged on, __15__ an executives comment that nobodys cost structure can survive MaxSavers.

　　1. A) little

　　B) slowly

　　C) quick

　　D) radically

　　2. A) burst

　　B) explode

　　C) opened

　　D) disappeared

　　3. A) gained

　　B) made

　　C) lost

　　D) disappeared

　　4. A) emerged

　　B) merged

　　C) has combined

　　D) mixed

　　5. A) what

　　B) which

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