股票风险的内涵是指预期收益的()。
A、不确定性
B、变动性
C、跳跃性
D、间断性
参考答案:A
解析:一般而言,风险是对投资者预期收益的背离,或者说证券收益的不确定
---Does Tom know anything about the accident that happened to his father?
--- No. We ____ him anything about it.
A.don’t tell
B.aren’t telling
C.haven’t told
D.aren’t going to tell
创新激励的方式不包括( )。
A.精神激励
B.产权激励
C.市场激励
D.政府激励