互動封閉仿真課堂
1、智能交互 2、電子板書式視頻教學 3、在線互動問答 4、封閉課堂啟發(fā)式教學方式
隨堂測試、知識梳理、易錯點揭示、總結啟迪智能錯題本
聽課中的錯題能自動加入錯題本，課后可方便復習及導出錯題本升級服務
在線答疑、課后同類題練習、講義下載、短信提醒16. “Is there any particular dessert you would like have?” “_____ you select is all right with me .”
A. Whatever B. Which C. That D. Whichever
17. _______ some mammals came to live in the sea is not known.
A. That B. What C. How D. Since
18. _______is his own decision.
A. When he is leaving B. When he leaves
C. When does he leave D. He leaves
19. The people at the party were worried about Janet because no one was aware ________ she had gone.
A. of where B. of the place C. the place D. the place where
20. ________ is of no concern to us.
A. It rain or not B. If or not it rains
C. Whether it rains or not D. Will it rain or not
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