The grades for the course will be assigned roughly, and I use the word roughly because we reserve the right to move these numbers around a little bit, but basically in the following percentages: 55% of your grade comes from the problem sets, the other 45% come from the quizzes.

课程的评分将会很严格，我用严格这个词儿,是因为我们保留,微调分数的权利，但是基本在以下范围内：,55%的分数来自于问题的提出，另外45%来自于测验。

麻省理工公开课 - 计算机科学及编程导论课程节选

I mean if you chose Alpha, you're swinging from A to B-; and from Beta, swinging from B+ to C.

要是你选α,你的分数会在A到B-,选β,分数范围会在B+到C

耶鲁公开课 - 博弈论课程节选