According to the control group at ordinary times normal class content, no additional exercises.

控制组按平时上课内容正常进行，没有附加练习。

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Class content is subject to change without prior notice.

课程内容如有更改，恕不另行通知。

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Class content is subject to change without prior notice.

课程内容如有更改，恕不另行通知。

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