OG12 100中一个小问题

pangpangshin

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
答案中说E subject and verb of the second clause are omitted.
虽说but是连词，但也没必要非得连句子啊。
况且句子主语与前句主语一样。应该可以省略啊
希望能把but后的省略情况解释下吧

gmatmba

E中的两个are in motion是不是罗嗦呀。

pangpangshin

呵呵，我知道其他的错误，就想知道OG上所说的这个错误时怎么回事

linmeimei

因为前面有两个复数啊，如果用逗号隔开了，那么逗号后面的句子存在可能不与前面的句子的主语一致的情况啊，为了最大避免歧义，当然最好是补出了，否则还要猜测是否是两个主语一致。

seuhongkai

个人觉得B中要是把主语they省略的话，会误解成是在说some of them，也就是说are是some of them的谓语
这边的they和前面的them指代一致，都是指代stars的，but后面没有省略啊，就是but the stars are......
就是说stars是在运动的，有些还速度很快，但是因为他们离地球太远...blabla..