— Cheer up! You might be granted        second chance for it.

—Not possible, since no such        thing has ever happened before

A．a ; a

B．the; a

C．a;不填

D．the;不填

提单或租约中的“船舶互撞责任”条款与保险条款中的“船舶互撞责任”有什么不同？