"占课"是个多义词，它可以指占课（日常活动）,占课（教育现象）。
期中与期末各有一次考试，各占课程总成绩的四分之一。
There will be one midterm and one final exam, each counting for a quarter of the course grade.
这项学期专题占课程成绩的40%，全班为一个小组共同完成。
The term project accounts for 40% of the class grade, and is performed by the class as a group.
初中英语课程的设置、教材的选编以及阅读课所占课时比例都体现了阅读教学的重要性。
We have realized the importance of teaching reading by analyzing the junior English curriculum, the selection of the textbooks and its great proportion in junior school English teaching.
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