阿摩線上測驗
20 The traditional airline marketplace has been ____________ dramatically by e-commerce because an increasing number
of travelers have switched to using internet-based services to manage their travel life cycles.
(A) established
(B) maintained
(C) promoted
(D) transformed
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統計： A(8), B(8), C(3), D(35), E(0) #1651567
統計： A(8), B(8), C(3), D(35), E(0) #1651567
