問題詳情
35. Just one day after a passenger attempted to blow up a plane on Christmas, new air travel ______ were introduced in many airports to tighten security.
(A) refreshments
(B) resignations
(C) reflections
(D) restrictions
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)