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—You must have met him the other day.
—Oh, no, I ________.
A. hadn't
B. mustn't
C. haven't
D. didn't
解析:选择D。 问句是对过去情况的猜测,所以答句用一般过去时。I didn’t是I didn’t meet him the other day. 的省略。
Attention, coffee lovers! We have for you, the best coffee machine ___ invented.
A. ever
B. already
C. even
D. nowadays
解析:正确答案为A。本题的主体句是We have the best coffee machine ___ invented,而分词短语ever invented = which have ever been invented是定语修饰语;for you不影响主体句答案的选择。