1. The inspection of qualifications of constructors must be toughened and grading of the constructors should be strictly controlled. Unqualified and low-standard constructors must be forbidden to undertake the construction that beyond their qualifications.  
   强化施工资质审查，严格施工资质等级控制，坚决禁止无水利施工资质和低资质的施工单位承担与其资质不相应的工程。
2. Can it do grading as well? 
   它还能放样吗？
3. grading papers is a thankless task. 
   改卷子是吃力不讨好的任务。
4. grading system in Chinese historical architecture 
   中国古代建筑等级制度
5. The teachers are grading the papers. 
   老师们正在给卷子打分数。

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