167.(Neanderthals had a vocal tract that resembled those of the apes) and so were probably without language, a shortcoming that may explain why they were supplanted by our own species. (A) Neanderthals had a vocal tract that resembled those of the apes (B) Neanderthals had a vocal tract resembling an ape’s (C) The vocal tracts of Neanderthals resembled an ape’s (D) The Neanderthal’s vocal tracts resembled the apes’ (E) The vocal tracts of the Neanderthals resembled those of the apes 答案：B

怎么看so were probably without language怎么觉得变扭。搜了一下以前的讨论，似乎没有对这个问题有个明确的解释。

哪位牛人给讲讲？谢了！