--- The two old friends were ______ busy ______ with each other ______ the time.

--- Yes. They hadn’t met for long.

A．too; to talk; to forget

B．too; talking; to forget

C．so; to talk; that they forgot

D．so; talking; that they forgot

下列哪项归属于基金投资运作环节的业务（）。

A.基金的交易

B.基金的绩效衡量

C.基金的资产估值

D.基金的会计核算