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9. are called 10. will be offered
Ⅳ. 1. was chosen 2. will have 3. are working 4. will take 5. to hold 6. discussed 7. Will; be sold
8. were printed 9. will be given 10. is/was; designed
Ⅴ. 1. big enough to hold 2. too heavy for me to 3. It’s helpful of; to offer 4. It’s important to have
5. It’s necessary for; to finish 6. will be changed 7. was written 8. Where was; found
9. How long was; trapped10. Who will; be checked by 11. Where will; be placed 12. How important
Ⅵ. 1. How often is 2. wasn’t finished until 3. to walk any further 4. clearly enough for us to
5. impossible for us to get to the hotel 6. It’s really kind of you to help 7. am given 8. clever of you to
9. too difficult for me 10. will be built
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