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relic: something that has survived the passage of time, especially an object or a custom whose original culture has disappeared; something cherished for its age or historic interest.
4) Do you know any other cultural relics in China or in the world?
2. Some information about:
1) The Pyramids in Egypt
2) The Great Wall in Chins
3) Stonehenge in England
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