問題詳情

29. The solution to the problem is simple ______highly effective. I don’t understandwhy we didn’t figure it out earlier.
(A) yet
(B) or
(C) never
(D) moreoever

參考答案

答案：A
難度：非常困難0
統計：A(0),B(0),C(0),D(2),E(0)