中国邮政的服务方针是（）。
A.迅速、准确
B.快速、方便
C.安全、方便
D.放心、安全
参考答案：A, C
In a sport team each player has a clear role，and there are few occasions ___________ members are confused or uncertain of their roles.
A．why
B．that
C．when
D．in which
申购或赎回的价格错误将会引起基金资产的“稀释”或“浓缩”。( )
