一Mary said Mark started the fight and that David simply defended himself.

一 I don’t believe it. Those two hate each other. Anyway, ___________. 

A．It takes two to tango.团结才是力量

B．Two wrongs don’t make a right.两个错加不出一个正确来。

C．Attack is the best means of defense.进攻是最好的防御。

D．You can take a horse to water, but you can’t make it drink.你可以把马牵到水边，但你不能让它喝水。

箱涵在顶进过程中，应对（）进行测量监控。

A．原线路加固系统

B．箱体各部位

C．顶力系统和后背

D．施工组织设计

E．施工技术方案