問題詳情
【題組】38.( )Electronic textbooks are about to replace paper ones; someday in the future, textbooks’ _____ are likely to be stored and downloaded online.
(A) laboratories
(B) substances
(C) situations
(D) contents
參考答案
答案：D
難度：適中0.636364
統計：A(1),B(2),C(0),D(7),E(0)