OG11-97论坛里找不到此题关于指代的提问

97. The stars, some of them at tremendous in motion just as the planets are, yet being so far away from Earth that their apparent positions in the sky do not change enough for their movement observed during a single human lifetime.

(A) The stars, some of them at tremendous speeds, are in motion just as the planets are, yet being

(B) Like the planets, the stars are in motion, some of them at tremendous speeds, but they are

(C) Although like the planets the stars are in motion, some of them at tremendous speeds, yet

(D) As the planets, the stars are in motion, some of them at tremendous speeds, but they are

(E) The stars are in motion like the planets, some of which at tremendous speeds are in motion but

Answer: B

请问黄色标记的them的指代不会有混淆吗？它前面有两个复数名词:planets , stars。如果按照就近原则，那么OG里面很多的指代也没有遵循这个原则，反而多是从逻辑上、单复数上来判定指代的正确与否。

代词优先指代主语，宾语等主要部分。但这仅是有效性原则，不是绝对性的要求。

同意,这里只能指代主语