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Somehow Tim managed to stop his car thirty metres beyond Dave‘s burning machine. He climbed out. One of the firemen was running up the road， but he was more than a hundred metres away from the burning car. He would never get to Dave in time.
Tim‘s racing suit would not burn for about a minute even in the hottest fire. He ran to the burning car. He could see Dave in his seat with his head on the wheel. Tim took a deep breath and stepped into the fire. He took hold of Dave’s arms， pulled him out of the car and put him on the grass. Before the fireman reached him， he had Dave‘s helmet off， but Dave was no longer breathing.
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