問題詳情

20.He has made a discovery,_____ of great importance to the progress of science and technology.
(A)I think which is
(B)which I think is
(C)that I think is
(D)of which I think it is

參考答案

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