問題詳情

30.All the __________ on the city rail map are color-coded so that a traveler knows which direction she/he should take.
(A) routes
(B) roads
(C) sights
(D) systems

參考答案

答案：A
難度：適中0.625
統計：A(5),B(0),C(3),D(0),E(0)