“对一些人来说这很艰难，但是到了高年级的时候，三分之二学生升级到物理专业。”吉尔伯特说。
"It was rough for some, but by senior year, two-thirds have moved up to physics," says Gilbert.
有趣的是，在高年级，每天有八到九节课，而每位老通常每天只上两节课（每节课一般十五分钟）。
Interestingly, in the upper grades, teachers typically teach just two periods a day (typically 45 minutes in length) out of eight or nine periods.
不分专业，高年级学生平均每周的放松或社交的时间在11到12小时之间。
Across all majors, seniors averaged between 10 and 11 hours a week relaxing or socializing.
这份拘谨的适于高年级大学生的正文，提供广大的数学分析的介绍，从基本规律到更先进的材料。
This self-contained text, suitable for advanced undergraduates, provides an extensive introduction to mathematical analysis, from the fundamentals to more advanced material.
这份拘谨的适于高年级大学生的正文，提供广大的数学分析的介绍，从基本规律到更先进的材料。
This self-contained text, suitable for advanced undergraduates, provides an extensive introduction to mathematical analysis, from the fundamentals to more advanced material.
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