_______in the ocean, it becomes powerless once it is on the beach.

A．However a whale is powerful

B．However powerful a whale is

C．Whatever a powerful whale is

D．Whatever powerful a whale is

品德心理结构中最具有动力色彩的成分是（）。

A.道德认识

B.道德意志

C.道德行为

D.道德情感