28.People have always been corious how living things on the earth exactly began.(A)in (B)at (C)of (D

問題詳情

28.People have always been corious how living things on the earth exactly began.
(A)in
(B)at
(C)of
(D)about

答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)