39. ______ he referred to in his article was unknown to the general reader.(A). That(B). What(C). Wh

問題詳情

39. ______ he referred to in his article was unknown to the general reader.
(A). That
(B). What
(C). Whether
(D). Where

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