问题补充：
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
答案：
A. serious accidents as twice many
(答案→)B. twice as many serious accidents
C. twice serious accidents as many
D. serious accidents as many twice
解析：考查倍数的表达方式。倍数表达方式是：倍数+as+adj.+名词+as。所以选B。
