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5 . on 表示能作为依据或条件的原因,常译为“依照……”。
He has given up smoking on medical advice .
6 . of 和 from 表原因时常与 die 类似意义的词连用。die of 指因疾病,冻饿,或害怕,羞愧等内因或外因造成的死亡。与疾病名词连用时,二者均可。from 还可表示懒惰等造成某种后果的原因。
a ) His son having been killed in the war , the man died of a broken heart .
b ) In big cities during cold winter months , many old people die from the polluted air .
c ) She died of / from cancer .