A teacher deserves wide latitude in selecting the method of grading that best promotes learning in her classroom; that is, after all, the prime function of grades.

在选择最能促进课堂学习的评分方法时，教师应具有很大的自由度；毕竟，这是成绩的主要用途。

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By adopting the methods of experimental research and educational investigation, the teacher has made a two-year practical research, verifying the function and effect of this mode.

作者采用了实验研究法、教育调查法进行了两年的实践研究，验证了该模式的作用和有效性。

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It is a task every teacher faces about how to bring the function of computers into play better, and to improve the effect of teaching.

如何更好地发挥计算机的功能，提高教学效果，是每一位教师面临的课题。

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