I would have paid _____ for the dress if the sales girl had insisted, because I really wanted it. [ ]

A. as much twice

B. twice as much

C. twice more than

D. more than twice

射精管开口于

A．膀胱
B．附睾
C． * * 前列腺部
D． * * 海绵体部
E． * * 膜部