只有在很少的情况下，才会在数学课上发放补充作业纸。
Only rarely are supplementary worksheets distributed in a maths class.
教师们可以在课程计划上找到大部分课程的练习题、拓展材料及补充作业。
Teachers can find practice problems, suggested readings, and supplementary assignments for most courses offered by Highlights for High School.
本实用新型采用一个滚筒结构，不需要进行二次补充作业，提高了作业效率。
A rolling drum structure is used for the utility model, the secondary supplying operation is not needed and the operation efficiency is increased.
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