--You haven’t said a word about the design ,Mike. What’s your idea?

----I’m sorry I _______ about something else just now.

A．am thinking

B．thought

C．was thinking

D．had thought

以下哪些指标属于盈利性指标（）。

A.资产利润率

B.资本利润率

C.核心负债依存度

D.成本收入比率