Five schools received a top grade for requiring six subjects.

VOA: special.2009.10.22

I say, well, let's grade about five or six of them, maybe ten of them, get a sense of it.

我说，我们给它们中的5或6道题打分了，也可能是10道，大概了解一下。

麻省理工公开课 - 固态化学导论课程节选