問題詳情
【題組】57. From the passage we know that the word mystery means something ____.
(A) that history books keep a record of
(B) people have found explanations for
(C) that has not been known enough about
(D) people have not yet thought about
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)