問題詳情
5. What is the meaning of “prolonged blast”?
(A) A blast of about one second’s duration.
(B) A blast of from two to three second’s duration.
(C) A blast of from four to six second’s duration.
(D) A blast of from eight to ten second’s duration.
參考答案
答案：C
難度：簡單0.75
統計：A(0),B(1),C(6),D(1),E(0)