[求助]885 sec2-01

1. A fire in an enclosed space burns with the aid of reflected radiation that preheats the fuel, making ignition much easier and flames spreading more quickly.

(A) flames spreading

(B) flame spreads

(C) flames are caused to spread

(D) causing flames to spread

(E) causing spreading of the flames

答案选择D

但:  E有什么不对? 能否将spreading of the flames看成一个动名词,然后

making ignition much easier 与 causing spreading of the flames more quickly. 不就是更好的并列结构的吗?

谢谢!

谁能指导一下吗,谢谢!!