在定量描述教学评价结果时，一般采用原始分或标准分。简述原始分与标准分的含义。
参考答案
参考解析
，求ζ的数学期望Eζ和方差Dζ。【分析题】
He adds humbly that perhaps he was “superior to the common run of men in noticing things which easily escape attention, and in observing them carefully.”
