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

请问A为什么不能选呢？OG说Placement of the modifying phrase and the comparison are awkward and ineffective; being provides neither a subject nor a verb for the second main clause.

我不知道awkward在哪里，而且yet后面为什么一定要是一句句子呢，不可以把yet看作副词，being修饰前面的stars嘛？

请NN指点！

我的拙见：

1. 这里句意是要表示对比，前面说stars动的快，后面说但是动的也不是那么快（典型的废话）。而yet做副词没有这种意思。要表示对比yet必须是连词，这要求他后面要跟一个句子。

2. A中being后面的部分结构复杂（其中还有一个so...that...），含义丰富，最有效的表达手段是用一个句子。

3. A中还有一个顺序问题，The stars, some of them at tremendous speeds, are in motion just as the planets are, 其中at tremendous speeds这句不知道是从哪里来的，因为之前并没有提到motion。试想把speeds后面的东西都去掉，读者就会感到迷惑，是什么东西有很快的速度，是不是说星球上文明的发展速度？还是说一年四季变化的速度。有时候这种问题很难察觉，因为凭借我们中国人超强的理解能力，一看到后面有motion就自然而然的对号入座了。但是我感觉GMAT有时候真的是在考察误解能力，需要我们随时随地努力去误解句子。

这样看来，像B这种老老实实的平淡无奇的句子最没有可能又误解，所以它才是正解。

一点拙见，请指教。

嗯，楼主说得很有道理。我又想了想，A里面用at tremendous speeds来修饰them(stars)确实会引起很多歧义。讲的很清楚，谢谢！

还有一个小问题，yet做副词的时候是什么意思呢？

1   a) used in negative statements and questions to talk about whether something that was expected has happened

§ I haven't asked him yet (=but I will) .

§ Has Edmund arrived yet?

§ 'Have you finished your homework?' ' Not yet .'

b) used in negative statements and questions to talk about whether a situation has started to exist

§ 'How are you going to get there?' 'I don't know yet.'

§ Women didn't yet have the vote (=at that time) .

§ 'Is supper ready?' 'No, not yet .'

2 used in negative sentences to say that someone should not or need not do something now, although they may have to do it later

§ You can't give up yet!

§ Don't go yet. I like talking to you.

3 used to emphasize that something is even more than it was before or is in addition to what existed before

ￚsynonym still

yet more/bigger/higher etc

§ He got a call from the factory, telling of yet more problems.

§ Inflation had risen to a yet higher level.

§ yet another reason to be cautious

§ The meeting has been cancelled yet again (=one more time after many others) .

4 the biggest/worst etc (something) yet

used to say that something is the biggest, worst etc of its kind that has existed up to now

§ This could turn out to be our biggest mistake yet.

§ Nordstrom's latest novel looks like his best yet.

5 as (of) yet

used when saying that something has not happened up to now

§ We've had no luck as yet.

§ on an as yet undecided date

6 months/weeks/ages yet

used to emphasize how much time will pass before something happens, or how long a situation will continue

§ 'When's your holiday?' 'Oh, not for ages yet.'

§ It could be months yet before they know their fate.

7 could/may/might yet do something

used to say that something is still possible in the future, in spite of the way that things seem now

§ We may win yet.

§ The plan could yet succeed.

8 somebody/something has yet to do something

formal used to say that someone has not done something, or that something has not happened when you think it should already have been done or have happened

§ I have yet to hear Ray's version of what happened.

§ The bank has yet to respond to our letter.

解释来自LONGMAN Dictionary of Contemporary English。

好详细～谢谢！