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1. Evidence came up _____ specific speech sounds are recognized by babies as young as six months old.
A. which B. what C. that D. when
2. I haven’t decided _____ hotel to stay at.
A. which B. what C. at which D. where
3. ______surprises most of us.
A. Wolves are afraid of us
B. The fact that wolves afraid men
C. The fact that wolves are afraid of men
D. Wolves’ afraid of men
4. The announcement ______all flight were cancelled because of bad weather greatly distressed the waiting passengers.
A. that B. which C. why D. of which
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