公文是行政机关在行政管理过程中形成的具有规范体式和（）的文书。

A．制度程序

B．法定效力

C．印装规格

D．指导作用

_______ there were only five soldiers left at the front,______ they went on fighting.

A．Because;so

B．If;and

C．Though;but

D．Though;/