Today,scientists say a person dropped on the top of the mountain would live no more than ten minutes.

VOA: special.2010.06.30

It's not meant to be more than five, ten minutes of work, but the point of the question, -15, 20 minutes of work, but the point of the question is to motivate people to keep up with the material and do the readings.

几分钟就能完成,这个作业的目的,要十几到二十分钟完成吧,这个作业的目的在于激励大家,跟上课程的进度并去阅读材料

耶鲁公开课 - 心理学导论课程节选

The Census Bureau says the ten-question form this year is one of the shortest ever and should take no more than ten minutes.

VOA: special.2010.03.20