题目内容:
Inwhichaspecthavee-bookpublishersdoneincorrectly? A.Theyhaveonlyputemphasisonlearningexperience.
B.Theyhavemadeitdifficulttohaveaccesstoane-book.
C.Theyhavemadeitratherboringandinconvenienttolearn.
D.Theyhavejustproducedanelectroniccopyofprinttextbooks.
参考答案:
答案解析: