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Receptionist: 41 Madam?
Alice: I want a single room. I booked(预定)it three days ago.
Receptionist: 42 .
Alice: It’s Alice. Alice White.
Receptionist: Oh, yes. Here it is. You want a single room.
Alice: 43 And if it is possible, I’d like a room on the ground floor.
Receptionist: 44 all the rooms on the ground floor have already been taken. But we do have a nice room that overlooks the hotel swimming pool. It is on the second floor.
Alice: Thank you. 45 is the restaurant still open?
Receptionist: I’m afraid not. But you can order room service.
Alice: OK. Thank you.
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