50.Owing to ________ competition among the airlines, travel expense have been reduced considerably.(

問題詳情

50.Owing to ________ competition among the airlines, travel expense have been reduced considerably.
(A) fierce
(B) strained
(C) eager
(D) critical

答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)