单纯二尖瓣狭窄占风心病()。
A.45%
B.25%
C.55%
D.15%
E.35%
参考答案:B
Play, often seen as _______ activity for kids ,is still important in _____ development of teenagers.
A.the ; the
B.an; the
C.an ;不填
D.the;不填
一般来说,基金管理人的投资运作损失,是由于市场变动、操作失误所引致,还是违反基金持有人的利益要求所引致,是可以分清的。( )