And the Extension Service at North Dakota State University offers other advice: Do not save plastic bags of food even if boxes or containers inside the bags appear dry.

VOA: special.2010.07.19

I heard that MIT offers Open Course Ware to students. What do you think of it?

我听说麻省理工给学生提供开放式课件。你有什么看法？

开放式的课程？ - SpeakingMax英语口语达人

I heard that MIT offers Open Course Ware to students. What do you think of it?

我听说麻省理工给学生提供开放式课件。你有什么看法？

开放式的课程？ - SpeakingMax英语口语达人