Ding Rong is a teacher from the Fourth Middle School of Beijing.
丁荣是北京四中的一名教师。
On the afternoon of October 10, we had the opening ceremony of the fourth middle school sports festival.
10月10日下午，我们进行了第四中学体育文化节开幕式。
The fourth part puts forward the three methods of the compiling middle school mathematical exercises on view of the different basis ahead.
详细阐述了不同依据的中学数学习题应采用的不同编制方法。
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