問題詳情
64.At the end of the train there is an open ________ car where you can stand and smell the jungle, listen to the birds, and breathe in the sweet Asian air.
(A) primary
(B) installation
(C) observation
(D) moderation
參考答案
答案：C
難度：適中0.491525
統計：A(9),B(13),C(29),D(6),E(0)