12th OGde Diagnostic test 求助

summer3513

里面好多语法不明白，为什么这部分的语法没有解释呢？OG后面的解释看的又很晕，，，希望各位大牛帮帮忙！谢谢了！

毛毛carina

~~~你希望大家怎么帮你呢？

诊断测试只是让你知道备考前的水平，大家一般都不用作复习过程中的资料的，当然也就不怎么研究这部分的题目啦

summer3513

哦。那请问下下面这道题。
According to scholars, the earliest writing was probably not a direct rendering of speech, but  was more likely to begin as a separate 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 begun from
E it was more likely that it began
答案是B
不知道为什么，看了解答也觉得很疑惑。开始一看也觉得无从下手。
解释里有个 probably not A， but more than likely B
以前很少见这样的表达方式，所以看上去觉得不自然。 不是 Not，but 吗？怎么又likely了。。。很疑惑！
求帮助，谢谢！