①保护色                     A．南美洲的树叶鱼伪装成一片枯叶，漂浮在水面，并可迅速攻击游过身边的猎物

②拟态                       B．金环蛇为据毒蛇具有鲜艳的体色

③警戒色                     C．北极熊皮下有厚厚的脂肪

④行为、生理特征             D．绿色草丛中的蝗虫体色是绿色的．

Flooding of any compartment in a ship that results in a serious loss of reserve buoyancy will always（）.

A.increase the ttrim

B.increase ship stability

C.cause a serious list

D.decrease the heeling moment