关于对称分布资料,理论算术均数和中位数大小是()。
A.相等
B.不能确定谁大谁小
C.算术均数大于中位数
D.算术均数小于中位数
E.两者之间无可比性
参考答案:A
What worried the child most was _____________ to visit his mother in the hospital. [ ]
A. to his being allowed
B. his not being allowed
C. not his being allowed
D. not his allowed
游戏《DOTA2》在中国大陆的发行商是()
A.盛大游戏
B.完美世界
C.Valve
D.空中网