All the materials used were of the highest grade.

　　使用的材料全是優質品。

　　You get an A grade for scores of 75 and over.

　　75分及75以上的分數就是優等。

　　Your grade will be based on four papers and a final exam.

　　你的成績將根據四篇論文和期末考試決定。

　　A high proportion of candidates get low or unclassified grades.

　　有很大一部分考生得分很低甚或不獲評分。

　　About 10% of trainees fail to make the grade.

　　接受培訓的人大約有10%未達標。