問題詳情

56. There is some ___ about the true origins of the guitar since the instrument has a cloudedhistory. The argument has been on for long.
(A) ignorance
(B) budget
(C)doubt
(D) debate

參考答案

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