Statistics show that men have _____ as women do for every mile they drive. [ ]

A. serious accidents as twice many    

B. twice as many serious accidents

C. twice serious accidents as many    

D. serious accidents as many twice

管道试压时，穿跨越二级以上公路管段应单独试压，强度试验压力为设计压力的（）倍。

A、1.1

B、1.25

C、1.5

D、2.5