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The newspaperman did not understand what Johnson meant. In his newspaper he reported that Johnson was seventy-five and had a daily injection in his neck. Within a week Johnson received thousands of letters from all over Britain， asking him for the secret of his daily injection.
51. Johnson became a rich man through _________.
A. doing business.
B. making whisky.
C. cheating.
D. buying and selling land.
52. The gift of money to the school suggests that Johnson __________.
A. had no children.
B. was a strange man.
C. was very fond of children.
D. wanted people to know how rich he was.
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