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(jié)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20. There is no doubt that the boxes were then put on a train for… 毫無疑問，這些箱子后來被裝上了運往……的火車。
There is no doubt that she will keep her word.毫無疑問她會遵守諾言的.
There is no doubt that Taiwan belongs to China. 這是毫無疑問的,臺灣屬于中國。
There is no doubt that she is capable of the job.她能勝任這個工作,這是毫無疑問的.
21. After that, what happened to the Amber Room remains a mystery. 從那以后，琥珀屋的去處便成了一個謎。
it remains to be seen 尚待分曉
The fact remains to be proved.事實尚待證明
remain in呆在家里 remain out呆在外面, 留在戶外
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