more 的用法 求教

lzksmib

og13   D39    According to scholars, the earliesat writing was probably not a direct redering of speech, but was more likely to begin as a seperate and distinct symbolic system of communication, and only later merged with spoken language.

A.was more likely to begin as
B.more than likely began as
C.more than likely beginning from
D.it was more than likely began from
E.it was more likely that it began

OA是B   对于那个more后面为什么要加likely不理解  OA的解释是：When more is used in the comparative form of an adjective (more difficult) or adverb (more likely), it is followed by than

我们以前不是也遇到过很多more beautiful， more quikly 的用法吗？