软鳍鱼类
参考答案：
辐鳍亚纲中鲱形目、鲤形目、鳗鲡目等鱼类，由于它们的鳍通常无棘，故也称为软鳍鱼类。
B．获得较大的牵引力
C．节省燃油
D．减小阻力
The meeting___ last night was a great success and all the disagreements got ___.
A．to be held; settled
B．held; settled
C．holding; settling
D．being held; settled
