OG12SC100求助

foreverluke

这道题看过讨论，但从没涉及一个我将要提的很弱的问题。。。
100. The stars, some of them at tremendous speeds, are 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 to be 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
我想说，中学好像说过英语里两个句子之间一定要有关系连接词，否则不能用逗号。那么题目中The stars are in motions, some of them at...speeds...这样的两个句子可以直接用逗号连接么，先不考虑其它因素，难道不应该是some of which at ...speeds才对吗？
可能是我基础语法有问题。。。谢谢解答。

detectiveyangs

some of them at tremndous speeds 不是句子，这是插入语

lenghongmin

some of them at tremndous speeds  没谓语 不是句子

gabriel_djh

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

如果不考虑E 选项的RUN-ON 问题。 some of which 在主语的位置上， 根据主对主原则， 那么some of which 指向Stars, 为何OG 解释还是说“some of which is awkward and ambiguous” 呢？

恳请NN赐教啊

onedayling

which 修饰离它最近的名词 这里是planets,其实想指stars
这就ambiguous了

banglixing

同意楼上，这里E选项里的which指代的是planets，而不是stars..

本人不理解的是为什么A选项说placement of modifying phrase and the comparison are awkward and ineffective.??