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2.Peter the great, like his country, was strong and proud. 彼得大帝就像他的国家一样，既强大又自傲。proud adj. 自豪的;骄傲的;be proud of = take pride in 以……为荣; E.g. Li Hua is very proud of his new car. = Li Hua takes pride in his new car. 李华为他拥有新车而感到自豪。be proud to do sth. 因做而感到光荣; E.g. I am very proud to call you my friend. 能够高攀您为朋友，我感到很自豪。 She is proud to be invited to attend the conference. 她对被邀请出席这次会议感到自豪。
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