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、短信提醒一、重点短语：
for example
be known for
as far as I know
on the sides of
by hand
all over the world
be good for
be good at
be from
such as
turn…into
according to
send out
ask for help
in trouble
a symbol of
be used for
during the Spring Festival at a very high heat
good luck
sky lanterns
at a very high heat
no matter
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