问题补充：
Mary’s skirt looked just the same as Joan’s, but it cost hers.
A. as much twice as
B. twice as much as
C. much as twice as
D. as twice much as
答案：
A. as much twice as
(答案→)B. twice as much as
C. much as twice as
D. as twice much as
解析：考查倍数表达：句意：玛丽的裙子看上去和琼的一样，但是花了她两倍的价格。倍数的表达是：倍数+as+adj+as，选B。
