请教GWD 18-33

Retail sales rose 8/10 of 1 percent in August, intensifying expectations that personal spending in the July-September quarter more than doubled that of the 1.4 percent growth rate in personal spending for the previous quarter.

A.that personal spending in the July-September quarter more than doubled that of
B.that personal spending in the July-September quarter would  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 quarter more than doubling that of
E.of personal spending in the July-September quarter, that it would more than double that of

答案是B，但是more than double搞得我很困惑，这里double是什么词性？

v.

这里double是什么词性？

VI

用动词表达倍数, 可用于主动, 也可用于被动, 但不能和AS搭配.

---- BY