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An End
by Christina Georgina Rossetti
Love, strong as Death, is dead.
Come, let us make his bed
Among the dying flowers:
A green turf at his head;
And a stone at his feet,
Whereon we may sit
In the quiet evening hours.
He was born in the Spring,
And died before the harvesting:
On the last warm summer day
He left us; he would not stay
For Autumn twilight cold and grey.
Sit we by his grave, and sing
He is gone away.
To few chords and sad and low
Sing we so:
Be our eyes fixed on the grass
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