It was dark and cold. They had to find a house ____ and some wood ____.

A．to stay in…to make a fire with

B．to stay…to make a fire with

C．to stay in…to make a fire

D．to stay…to make a fire

安装前减震器总成时先使减震器（）插入减震器上支架孔中，（）套入减震器下支架，然后拧紧螺母。

A.下端；上端螺栓

B.上端螺栓；下端螺栓

C.上端螺栓；下端

D.下端；上端