20. Retail sales rose 0.8 of 1 percent in August,intensifying expectations thatpersonal spending in the July–September quarter more than doubled that of the 1.4 percent growth rate in personalspending for the previous quarter.

(A) that personal spending in the July–September quartermore than doubled that of

(B) that personal spending in the July–September quarterwould more than double

(C) of personal spending in the July–September quarter,that it more than doubled

(D) of personal spending in the July–September quartermore than doubling that of

(E) of personal spending in the July–September quarter,that it would more than double that of

选B，这里的double是做动词，可是More than 后面能跟动词吗？ double的用法不明白额，看了prep笔记上的解释，还是云里雾里的，有木有比较简单一点的解释呢，先谢谢~~~