—It’s hard to believe that Jack ________ have fought with the policeman.

—Yes.If one ________ ask for trouble, it can't be helped.

A．would; will

B．must; may

C．should; must

D．need; dare

在预制预应力混凝土简支梁预应力施工中，计算预应力筋伸长值时，预应力筋的弹性模量应取（）.

A、设计图纸上给出的设计值

B、供应商提供的每批预应力筋的实际弹性模量

C、每批预应力筋的进场检验所测得的实际弹性模量