江南参加班上“大汉风云”话剧演出，饰演一位生活在汉武帝晚期的贵族，下列最可能出现

An analyst wants to determine whether the monthly returns on two stocks over the last year were the same or not. What test should she use if she is willing to assume that the returns are normally distributed（）

A. A paired comparisons test because the samples are not independent.

B. A difference in means test with pooled variances from the two samples.

C. An F-test with the greater mean in the numerator.

简述《幼儿园教育指导纲要(试行)》中对于科学教育的目标。

在煤矿生产中，当生产与安全发生矛盾时必须是（）。

A．安全第一

B．生产第一

C．先生产后安全

败毒散中的君药是（）

A.独活、羌活

B.川芎、薄荷

C.柴胡、前胡

D.茯苓、人参

E.桔梗、枳壳