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51. If ________，I would have gone with him.
A. had he told me B. he had told me C. he has told me D. he would tell me
52. Alice is moving to her new apartment next Saturday.
I would be glad to help her，________ need some help.
A. should she B. if she will C. if she D. if she might
53. We will never give in ________ they might do or say about our plan.
A. no matter how B. how C. whatever D. although
54. I wonder if I ________ time. If I ________ time，I’ll go with you.
A. have;have B. will have;will have C. have;will have D. will have;have
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