A survey by the National Council of Churches showed that in 1986 there were 20,736 female ministers, almost 9 percent of the nation's clergy, twice as much as 1977. A. twice as much as 1977 B. twice as many as 1977 C. double what it was in 1977 D. double the figure for 1977 E. a number double that of 1977's Answer: d
double在这里是什么词性？动词，句子结构好像不对；形容词么，adj＋the可以么，还有没有类似的结构？请nn指教！ | 
