The school ________ Mr. White teaches English is a famous one, _________ was set up 100 years ago.

A．where; which

B．which; in which

C．where; that

D．which; where

某研究者在5种不同的温度下分别独 立地重复了10次试验，共测得某定量指标的50个数据，根据资料的条件，可 用单因素方差分析处理此资料，组间的自由度是多少

A．45

B．9

C．49

D．4

E．5