填空题 The central airport designated to receive a large number of flights from many location and where passengers can transfer flights to other locations is called the 1.
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【正确答案】 1、hub    
【答案解析】[解析] 根据Nature of the Industry部分第二段“A hub is a centrally located airport designated by an airline to receive a large number of its flights from many locations，and at which passengers can transfer to flights to any of the locations served by the airline system．”可知这里应填hub。