OG11 紫皮59~拜托大家看下哈

neanderthals had a vocal tract that resembled those of the apes and so were probably without language, a shortcoming that many explain why they were supplanted by our species.

b neanderthals had a vocal tract resembling an ape's

e the vocal tracts of the neanderthals resembled those of the apes.

俺的问题是后面明明说的是were 为什么还选Ｂ呢？Ｅ为什么不行哈．

有会的帮看下～

同问，为什么后面是were，前面还是单数？而且为什么vocal tract不能做主语呢？