互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本，课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒In 1908 Lord Northcliffe offered a prize of &1000 to the first man who would fly across the English Channel. Over a year passed before the first attempt was made. On July 19th, 1909, in the early morning, Hubert Latham took off from the French coast in his plane the 'Antoinette IV'. He
had travelled only seven miles across the Channel when his engine failed and he was forced to land on the sea. The 'Antoinette' floated on the water until Latham was picked up by a ship.
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