在进行统计分析时,平均值、中位数等的用途是()。
A.表示事物特征
B.比较两事物的差异
C.分析影响事物变化的因素
D.分析事物之间的相互关系
参考答案:A
A. too many
B. too much
C. much too
D. many too
He felt that his mother had made _____ for him. [ ]
A. cautions
B. sacrifices
C. approvals
D. frictions