一般而言，证券投资风险是指对投资者（）的背离。
A.投资收益
B.预期收益
C.投资金额
D.投资数量
参考答案：B
---- Look! Everything here is under construction.
---- Oh, has the building once ___ for exhibition been pulled down, too?
A．having been built
B．being built
C．to be built
D．built
在1分钟踢毽子比赛中，六（2）班8位参赛选手的成绩如下．
10055806640807057
这组数据的中位数是______，众数是______．
