[求助]prep2-sc-122情态动词随意添加

122.       (30985-!-item-!-188;#058&005940)

The features of the floor of the Kasei Valles on Mars look just like those at the base of Antarctic ice streams, so it suggests that possibly it was flowing ice that carved the giant Martian channels previously attributed to cataclysmic floods.

(A) so it suggests that possibly it was flowing ice that

(B) a suggestion that flowing ice may have

(C) to suggest flowing ice as possibly having

(D) suggesting that flowing ice may have

(E) which is suggestive of flowing ice having possibly

答案选d,可是记得有一条说原文没有情态动词是不可以随便添加的,那d里的may怎么解释呢?

不加may说明之后的东西基本就是个事实不符合意思的需要

不是乱加啊，may就是possibly