104. Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors.
(A) merging the nuclei of atoms and not splitting them apart, as in nuclear reactors
(B) merging the nuclei of atoms instead of splitting them apart, like nuclear reactors
(C) merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do
(D) and merges the nuclei of atoms but does not split them apart, as is done in unclear reactors
(E) and merges the nuclei of atoms, unlike atomic reactors that split them apart
选E吧？
嗯.C也有道理.不过个人觉得E更好.
C中的最后那个as句子.我觉得有点问题.
OG11edition
And not is an awkward way to establish a contrast; instead of, rather than, or unlike are more appropriate idioms to express a contrast. the comma folloing bombs is paired with the comma following apart, and this comma parir sets off the participial phrase introduced by merging. As introduces a clause; since a clause requires a subject and a verb, as cannot be followed by the prepositional phrase in nuclear reactors.
C) correct. rather than is a correct idiom for comparison in this sentence; as is followed by a clause with a subject, nuclear reactors, and a verb, do; the comparison is clear and complete.
E)illogical and awkward construction incorrectly makes merges the second verb of the restrictive clause and a separate action parallel to powers; comparison is awkwardly drawn; switch from nuclear to atomic is unexplained and unsupported.
总结
1. C正确的话，就表明C中的do是指代slipt。也就是do首先指代前面最近的动词形式的原形。
例如：
Fusion, the process that fuels the sun, is the holy grail of nuclear energy. It smashes together atoms to release energy, rather than splitting them apart as modern fission reactors do.（引自网络文章）
2. E错按照OG的说法：(1)merge应该是现在分词作power的伴随，而不是另一个和power平行的动作。(2)unlike作状语放句未，不是ETS喜欢的形式，一般是放句首或是所要修饰的动词的前头。
我个人也觉得c应该是正确的
merge应该是power的伴随状语，用来说明power的
rather than doing
...,as sth. do
这都是正确选项的标志。
104. Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors.
(A) merging the nuclei of atoms and not splitting them apart, as in nuclear reactors
(B) merging the nuclei of atoms instead of splitting them apart, like nuclear reactors
(C) merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do
(D) and merges the nuclei of atoms but does not split them apart, as is done in unclear reactors
(E) and merges the nuclei of atoms, unlike atomic reactors that split them apart
选E不对还有是因为比较对象不一致，成了 Nuclear fusion 或者力量和原子能反应堆比较了，不成立。
The comma following bombs is paired with the comma following apart, and this comma pair sets off the participial phrase introduced by merging.
这句话如何理解？
rather than doing
...,as sth. do
这都是正确选项的标志。
rather than表对比, doing/to do A rather than doing/to do B, 不能单纯得说rather than doing就是正确选项;
...,as sth. do
这都是正确选项的标志。
请问有没有什么例子可以证明呢?作比较时, like+n.放在句首 或者 as+ clause放句尾都是可以的. 没有绝对正确的说法.
The comma following bombs is paired with the comma following apart, and this comma pair sets off the participial phrase introduced by merging.
这句话如何理解？
The comma following bombs is paired with the comma following apart, and this comma pair sets off the participial phrase introduced by merging.
就是说：bombs之后的逗号和apart之后的逗号组成一对，这对逗号将merging引导的分词短语（与句子其他部分）分开。
1. C正确的话，就表明C中的do是指代slipt。也就是do首先指代前面最近的动词形式的原形。
例如：
Fusion, the process that fuels the sun, is the holy grail of nuclear energy. It smashes together atoms to release energy, rather than splitting them apart as modern fission reactors do.（引自网络文章）
2. E错按照OG的说法：(1)merge应该是现在分词作power的伴随，而不是另一个和power平行的动作。(2)unlike作状语放句未，不是ETS喜欢的形式，一般是放句首或是所要修饰的动词的前头。
同意你总结的第一点，你的例子也很好。但第二点中从何处判断：merge是power的伴随，而不是作为分词短语修饰that/force/nuclear fusion? 本题中将nuclear reactor做对比是在让人费解，找不到合适的对比对象。如果假设c对，nuclear reactor似乎是与that（that power)对应。而且主句说nuclear fussion is a force本身就让人觉得挺怪异的，nuclear fussion是一个过程怎么能直接等同于force呢？觉得本题中用平行来排除没有说服力。
另在D选项的解释中说：punctuation makes clear this separate action cannot be the case如何理解？
D：and merges the nuclei of atoms but does not split them apart, as is done in nuclear reactors.
欢迎讨论。
我觉得这题目前存在的问题关键是OG对标点的解读该如何理解：
The comma following bombs is paired with the comma following apart, and this comma pair sets off the participial phrase introduced by merging.
D. Illogical and awkward construction attempts to make
merges the second verb of the restrictive clause parallel to powers and does not split, punctuation makes clear this separate action cannot be the case; as is done is awkward and wordy
这两句话是遵循什么样的语法规律的呢？请知道的朋友指教，谢谢
104. Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors.
(A) merging the nuclei of atoms and not splitting them apart, as in nuclear reactors
(B) merging the nuclei of atoms instead of splitting them apart, like nuclear reactors
(C) merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do
(D) and merges the nuclei of atoms but does not split them apart, as is done in unclear reactors
(E) and merges the nuclei of atoms, unlike atomic reactors that split them apart
B中like nuclear reactors放在句尾，修饰哪个部分，放在句尾和放在句首有区别吗？
C中as nuclear reactors do又修饰哪个部分，可以这么理解吗：Nuclear fusion is the force that ...，as nuclear reactors do，那么do是不是和is对应？
为什么OG对B的解释：here the basis of comparasion is unclear, and the usage is incorrect
我觉得这题目前存在的问题关键是OG对标点的解读该如何理解：
The comma following bombs is paired with the comma following apart, and this comma pair sets off the participial phrase introduced by merging.
D. Illogical and awkward construction attempts to make
merges the second verb of the restrictive clause parallel to powers and does not split, punctuation makes clear this separate action cannot be the case; as is done is awkward and wordy
这两句话是遵循什么样的语法规律的呢？请知道的朋友指教，谢谢
同意你总结的第一点，你的例子也很好。但第二点中从何处判断：merge是power的伴随，而不是作为分词短语修饰that/force/nuclear fusion? 本题中将nuclear reactor做对比是在让人费解，找不到合适的对比对象。如果假设c对，nuclear reactor似乎是与that（that power)对应。而且主句说nuclear fussion is a force本身就让人觉得挺怪异的，nuclear fussion是一个过程怎么能直接等同于force呢？觉得本题中用平行来排除没有说服力。
另在D选项的解释中说：punctuation makes clear this separate action cannot be the case如何理解？
D：and merges the nuclei of atoms but does not split them apart, as is done in nuclear reactors.
欢迎讨论。
关于第一点，有些困惑。
从语法上说，既然逗号已经把merging分词短语与主句独立了，那么应该可以拿掉，变成：Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs as nuclear reactors do. 由此，do应该指代power这个动词。
从逻辑上说，do应该指split，因为nuclear reactor多指裂变的核反应堆，所以只能是指split the atoms apart。太阳和氢弹的原理是核聚变。
到底哪一个更对？thx
我也觉得困惑：
先说说我对OG11解释的理解:
The comma following bombs is paired with the comma following apart, and this comma pair sets off the participial phrase introduced by merging
我的理解是: 这l两个comma是一对，中间是分词短语；
attemps to make merges
the second verb of the restrictive clause parallel to powers and does not split, punctuation makes clear this separate action cannot be the case;
我的理解：D试图使merge成为that引导的从句的第二个谓语动词,从而与powers并列，但标点明显的表明不是这回事儿。此句中，clear提前，即make (this...case) clear.
我的问题来了：
1)如果C对：as nuclear reators do 从句子的意思讲是应该修饰splitting的，但有一下问题:
按我对OG11的理解，这对comma语法上应该可以，那样as nuclear reators do的do就指代powers了，应该是说不通的。
我认为如果C要正确，应该将第二个comma去掉，或加在rather than之前。
2)如果E正确，那么powers就和merges并列了，但我认为他们确实不改并列，一个是动作(结果)，Power; 另一个是原理(解释/伴随),merge.不应并列。
供讨论。
104. Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors.
(A) merging the nuclei of atoms and not splitting them apart, as in nuclear reactors
(B) merging the nuclei of atoms instead of splitting them apart, like nuclear reactors
(C) merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do
(D) and merges the nuclei of atoms but does not split them apart, as is done in unclear reactors
(E) and merges the nuclei of atoms, unlike atomic reactors that split them apart
选C
下面是OG对D和E选项的解释：
D Illogical and awkward construction attempts to make
merges the second verb of the restrictive clause parallel to powers and does not split, punctuation makes clear this separate action cannot be the case; as is done is awkward and wordy
E
merges the second verb of the restrictive
clause and a separate action parallel to
powers; comparison is awkwardly drawn; switch from nuclear to atomic is unexplained and unsupported
问题？？？？？？？？？？？？？？？？？？？？？？？？？？？？
1）
and not 改成but not 对不对？
2） D的解释中punctuation makes clear this separate action cannot be the case; as is done is awkward and wordy
是不是说如果想要表达平行的话必须是 ，and merges the nuclei of atoms
，
but does not split them apart,
也就是说在AND 和BUT 前面都必须有逗号才是正确的表达平行
3 ）E的解释switch from nuclear to atomic is unexplained and unsupported是什么意思？？什么叫从nuclear 到 atomic 的转换是不清楚和无支持的。
(B) merging the nuclei of atoms instead of splitting them apart, like nuclear reactors
在B选项中,如果不看like nuclear reactors, 那么用instead of对吗.
我也和小蚂蚁有着同样的问题~~upupupupupupup~~~希望有nn来解释阿~~~
(E) and merges the nuclei of atoms, unlike atomic reactors that split them apart
是不是这里unlike有比较歧义啊，原文意思是Nuclear fusion和nuclear reactor比较，一个merge,一个split. 但是E选项里，unlike接在nuclei of atomes里面，变成atomic reactors和nuclei的比较了，而后面的them按理来说应该指代nuclei of atoms，那么这样一来比较对象也错，逻辑也错？
同意linda的意见。解题需要结合句意。
这也是ETS不倾向在句末用unlike的原因之一吧！
同问,同问,弄不懂怎么判断出merge是做power的伴随状态的?????
谢谢,等待NN解答~~
还是没搞懂为什么要用现在分词，merging和spliting得逻辑主语到底是什么呢？？
有没有好心人把这句话翻译一下阿~~
我来说点东西.
B,E都错的原因是用LIKE,而没有正确的比较.
应该是NUCLEAR FUSION 和NUCLEAR FISSION比较,就是核聚变和核裂变
不能LIKE NUCLEAR REACTOR.
D的话,如果是AS HAPPENED IN NUCLEAR REACTORS应该也是对的.
A,C,E的AS XXX都是修饰SPLITTING THEM APART的.
不过AS是介词短语还是连词,我不是非常清楚.
我的理解，as 和like 做比较的时候，比较的重心是不一样的，
as比较的是动作，是两个相关或不相关，可比或不可比的名词（代词）发出的动作as nuclear reactors do是修饰spliting这个动作的，词形式，
引一个OG60. According to a recent poll, owning and living in a freestanding house on its own land is still a goal of a majority of young adults, like that of earlier generations.
(A) like that of earlier generations
(B) as that for earlier generations
(C) just as earlier generations did
(D) as have earlier generations
(E) as it was of earlier generations
这道题可以说是两个时间的比较，说白了还是动词时态方面的比较
like 纯粹是比较两个具有可比性的名词的，在ETS里面肯定是与主语进行比较的，因为可以放在谓语的后面，如果要是还和宾语进行比较的话，肯定会引起歧义的。
这个题我也错了，我并不明白为什么do能够指代spliting分词，请大家帮忙
同问,同问,弄不懂怎么判断出merge是做power的伴随状态的?????
谢谢,等待NN解答~~
我的理解是：GMAT中有一条规则是：尽量遵循原句的内容。原句中merging是做伴随状语成分的，而且符合逻辑，所以我们在选择前可以大概揣测一个大方向，即merging是从句成分。而我们通过平时做题，有知道ETS喜欢玩把从句成分变成主句成分的花招（比如变成并列，OG里好几题都是这样的陷阱），所以可以格外小心，进一步排除掉DE.
另外，划线之前是一个三者并列，A,B,and C, 如果选DE，即在这个并列结构后马上接上and merges... 两个and 挨得很近，感觉很别扭。但这点我只是凭语感，没有确凿的例证，还请大家一起努力帮忙证明。
个人感觉，D和E之所以错，在于and前面有逗号，应该被视为从句而不是和前面的谓语动词并列。这样的话，从句就没有主语了。
我的理解是：GMAT中有一条规则是：尽量遵循原句的内容。原句中merging是做伴随状语成分的，而且符合逻辑，所以我们在选择前可以大概揣测一个大方向，即merging是从句成分。而我们通过平时做题，有知道ETS喜欢玩把从句成分变成主句成分的花招（比如变成并列，OG里好几题都是这样的陷阱），所以可以格外小心，进一步排除掉DE.
另外，划线之前是一个三者并列，A,B,and C, 如果选DE，即在这个并列结构后马上接上and merges... 两个and 挨得很近，感觉很别扭。但这点我只是凭语感，没有确凿的例证，还请大家一起努力帮忙证明。
那如何判断原意呢？
我的理解，as 和like 做比较的时候，比较的重心是不一样的，
as比较的是动作，是两个相关或不相关，可比或不可比的名词（代词）发出的动作as nuclear reactors do是修饰spliting这个动作的，词形式，
引一个OG60. According to a recent poll, owning and living in a freestanding house on its own land is still a goal of a majority of young adults, like that of earlier generations.
(A) like that of earlier generations
(B) as that for earlier generations
(C) just as earlier generations did
(D) as have earlier generations
(E) as it was of earlier generations
这道题可以说是两个时间的比较，说白了还是动词时态方面的比较
like 纯粹是比较两个具有可比性的名词的，在ETS里面肯定是与主语进行比较的，因为可以放在谓语的后面，如果要是还和宾语进行比较的话，肯定会引起歧义的。
这个题我也错了，我并不明白为什么do能够指代spliting分词，请大家帮忙
同意giantddu的说法，我也很不明白为什么do能够指代spliting这种分词形式，as ...as 这种比较形式本来感觉还挺懂得，这一题让我发现其实没搞明白
请N人解释
这题我也选错了，看了大家的解释和OG的解释我明白是怎么回事了
the key D：
Nuclear fusion is the force that powers the sun....,
merging the ...(part1)rather than splitting them apart (part2), as nuclear reactor do (part3).
part1和part2比较，part2和part3比较。看part2和part3的比较（注意as就近比较），这个不是do指代不指代的问题，是do这个动作和splitting这个动作比较的问题，这两个动作的比较是成立的。
选项E的不好就在于用了unlike，语法上没问题了，但逻辑上unlike引出的atomic reactor和整个大主语NF在比了，而看看unlike分句引导的内容，显然和NF不在一个比较基础上。
一孔之见，望指教。
我也觉得困惑：
先说说我对OG11解释的理解:
The comma following bombs is paired with the comma following apart, and this comma pair sets off the participial phrase introduced by merging
我的理解是: 这l两个comma是一对，中间是分词短语；
attemps to make merges
the second verb of the restrictive clause parallel to powers and does not split, punctuation makes clear this separate action cannot be the case;
我的理解：D试图使merge成为that引导的从句的第二个谓语动词,从而与powers并列，但标点明显的表明不是这回事儿。此句中，clear提前，即make (this...case) clear.
我的问题来了：
1)如果C对：as nuclear reators do 从句子的意思讲是应该修饰splitting的，但有一下问题:
按我对OG11的理解，这对comma语法上应该可以，那样as nuclear reators do的do就指代powers了，应该是说不通的。
我认为如果C要正确，应该将第二个comma去掉，或加在rather than之前。
"但标点明显的表明不是这回事儿",这句话怎么理解,为啥标点表明不是这回事?
E: Powers A,B AND C, and Mergers the nuclei of atoms...but does not split them apart
怎么叫"标点表明不是那会事",怎么就不平行了,有人讲讲么?
我认为如果C要正确，应该将第二个comma去掉，或加在rather than之前。
这句话同意.
第二个逗号去掉,或者放在rather than前面,就会把 as nuclear reactor do 和 spliting更紧密的放在一起,不会歧义,让人以为do是修饰其他东西.比如powers
这题我也选错了，看了大家的解释和OG的解释我明白是怎么回事了
the key D：
Nuclear fusion is the force that powers the sun....,
merging the ...(part1)rather than splitting them apart (part2), as nuclear reactor do (part3).
part1和part2比较，part2和part3比较。看part2和part3的比较（注意as就近比较），这个不是do指代不指代的问题，是do这个动作和splitting这个动作比较的问题，这两个动作的比较是成立的。
选项E的不好就在于用了unlike，语法上没问题了，但逻辑上unlike引出的atomic reactor和整个大主语NF在比了，而看看unlike分句引导的内容，显然和NF不在一个比较基础上。
一孔之见，望指教。
选项E的不好就在于用了unlike，语法上没问题了，但逻辑上unlike引出的atomic reactor和整个大主语NF在比了，而看看unlike分句引导的内容，显然和NF不在一个比较基础上。
atomic reactor和整个大主语NF比较有啥不对么??
E: 核聚变是一种力量,该力量提供活力给(powers)太阳,恒星,以及氢弹,并且融合(mergers)原子的核子,不像原子反应堆,他分开原子(them=atoms).
(为了使得中英文单词劲量对应,翻的有点生硬)
从逻辑上一点没有问题啊? UNLIKE后面的AR 和大主语比较,正是我希望的啊!不比大主语我还不选呢
有哪位NN解释一下么?
(E) and merges the nuclei of atoms, unlike atomic reactors that split them apart
是不是这里unlike有比较歧义啊，原文意思是Nuclear fusion和nuclear reactor比较，一个merge,一个split. 但是E选项里，unlike接在nuclei of atomes里面，变成atomic reactors和nuclei的比较了，而后面的them按理来说应该指代nuclei of atoms，那么这样一来比较对象也错，逻辑也错？
unlike接在nuclei of atomes里面，变成atomic reactors和nuclei的比较了
这话怎么说? nuclei of atomes怎么说也是merges的宾语, unlike后面的 Atomic rector就算要比较,也是和这个从句的主语比较吧(这里merges的主语没有,省略了,应该是和powers的主语一致,那就是force)?
后面的them指代 nuclei of atoms逻辑怎么错了? 原子反映堆就是分裂核子的啊.
这道题我一开始排除C是因为，as引导的壮语从句没有明确的完整的主句对应（我记得这个GMAT考过的错误点）。难道有隐藏的逻辑主语+谓语+宾语，就可以算是完整的主句？
但E选项仅凭它将merging和powers平行就可能是错的。
EMERGING 做分词我同意。可是E的解释里说比较错误我就不理解了。switch from nuclear to atomic is unexplained and unsupported是什么意思？
我还是同意楼上的，这个比较本身在逻辑上并没有问题。正确答案就是说nuclear fusion 是 给太阳啊。。。的力量，聚合原子的。。而不是分裂他们，如同核反应堆一样。
而e的意思就是nuclear fusion是给太阳。。。的力量，聚合原子的。。。不像核反应堆要分裂他们一样。
我觉得意思上 并没有逻辑上的不同。
谁能给我解答？
童鞋们，如果选了E，那么AND之前存在逗号，AND后面就应该跟一个完整的，需要主语的句子。。。
而且UNLIKE后面，你们不觉得比较不对等么。。
EMERGING 做分词我同意。可是E的解释里说比较错误我就不理解了。switch from nuclear to atomic is unexplained and unsupported是什么意思？
我还是同意楼上的，这个比较本身在逻辑上并没有问题。正确答案就是说nuclear fusion 是 给太阳啊。。。的力量，聚合原子的。。而不是分裂他们，如同核反应堆一样。
而e的意思就是nuclear fusion是给太阳。。。的力量，聚合原子的。。。不像核反应堆要分裂他们一样。
我觉得意思上 并没有逻辑上的不同。
谁能给我解答？
switch from nuclear to atomic is unexplained and unsupported的意思应该是说E选项把nuclear reactors的概念换成了atomic reactors了。
其它的都明白了, 但还是不明白OG对于D的解释啊, 什么叫punctuation makes clear this separate action cannot be the case啊? 我觉得这句话是区别ABC/DE的关键点啊, 也就是说是区别merge这个动作是做分词还是做与power平行的动词的关键所在.
还有没有同学过来讨论讨论啊~~~~~~~~~
看了这么多讨论，似乎没有定论哦，依然糊涂
有没有NN 再指点指点！！
我来说点东西.
B,E都错的原因是用LIKE,而没有正确的比较.
应该是NUCLEAR FUSION 和NUCLEAR FISSION比较,就是核聚变和核裂变
不能LIKE NUCLEAR REACTOR.
D的话,如果是AS HAPPENED IN NUCLEAR REACTORS应该也是对的.
A,C,E的AS XXX都是修饰SPLITTING THEM APART的.
不过AS是介词短语还是连词,我不是非常清楚.
同意你的观点，觉得这个解释是暂时来说最清楚的了
另外，关于COMMA 的问题。MERGE不可能是第二个动词是因为它前面有个逗号，因为在gmat中，用AND连接两个动词似乎是不允许在AND前面再加逗号的
个人的一点看法，还请高人指点
同意这个看法。。
在细细品位一番后,有了点理解,请大家看看.
og11解释----The comma following bombs is paired with the comma following apart, and this comma pair sets off the participial phrase introduced by merging.
og--为什么是一对逗号呢? the force that powers the sun, the stars, and hydrogen bombs----限定从句解释the force.----是从句身份.
merging the nuclei of atoms rather than splitting them apart.---现在分词做伴随壮语也是从句身份---进一步解释前面从句---是并列从句关系(不知道说清楚没有)
核聚变是融合太阳,星星,以及氢弹的一种能量,(即)它也是融合atom的能量而不是split他们能量.他们是一对逗号,明确表明:他们是并列的关系(而且是并列的从句关系)---
所以D,E错误,1他们把具有从句身份的句子,变成主句.2,并列关系也描述错误:that [powers the sun,...and bombs] 与[merging ...rather than splitting...]---并列从句关系,(解释,和进一步解释关系).但是D,E的并列关系:powers. merges and split,三者的并行.
如:核聚变是一种融合太阳,星星,以及氢弹的并且融合atom能量而不是split能量的一种能量,
另外D,E还有一种错误,容易引起岐义
Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, and merges the nuclei of atoms but does not split them apart, as is done in nuclear reactors
Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, and merges the nuclei of atoms but does not split them apart, as is done in nuclear reactors
这是og最忌讳的.D.E错误.
我的观点：
比较句型为：A 谓语 C，like/unlike B。其中A和B是可比较的，所以在E中是Nuclear fusion和atomic reactors 的比较，Nuclear fsuion is the force unlike atomic reactors。但是本来想表达的意思却是Nuclear fusion 和atomic reactor在merge和split方面的不同~~~
不知对不对
我来说点东西.
B,E都错的原因是用LIKE,而没有正确的比较.
应该是NUCLEAR FUSION 和NUCLEAR FISSION比较,就是核聚变和核裂变
不能LIKE NUCLEAR REACTOR.
D的话,如果是AS HAPPENED IN NUCLEAR REACTORS应该也是对的.
A,C,E的AS XXX都是修饰SPLITTING THEM APART的.
不过AS是介词短语还是连词,我不是非常清楚.
这个解释总算让我搞明白了，哈哈
这题我也选错了，看了大家的解释和OG的解释我明白是怎么回事了
the key D：
Nuclear fusion is the force that powers the sun....,
merging the ...(part1)rather than splitting them apart (part2), as nuclear reactor do (part3).
part1和part2比较，part2和part3比较。看part2和part3的比较（注意as就近比较），这个不是do指代不指代的问题，是do这个动作和splitting这个动作比较的问题，这两个动作的比较是成立的。
选项E的不好就在于用了unlike，语法上没问题了，但逻辑上unlike引出的atomic reactor和整个大主语NF在比了，而看看unlike分句引导的内容，显然和NF不在一个比较基础上。
一孔之见，望指教。
同意。句子的主体部分是：Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs。
第一级附加成分是：merging the nuclei of atoms rather than splitting them apart，充当前面整句话的伴随方式状语，修饰主句主语nuclear fusion
第二级附加成分是：as nuclear reactors do,进一步解释splitting 这个动作同样发生在nuclear reactors里面。注意，这里强调的是动作的相似性，估计这种情况下不用考虑比较对象的主语是不是对等的问题。因为仔细琢磨的话，fusion与reactors确实不对等，单复数也不相同，用unlike必错。
看了各位大牛牛的讨论，我来总结一下。我的观点和上述所有人不一样，但是有继承关系。
论述比较长。大家耐心看。
Part 1
104. Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors.
(A) merging the nuclei of atoms and not splitting them apart, as in nuclear reactors
(B) merging the nuclei of atoms instead of splitting them apart, like nuclear reactors
(C) merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do
(D) and merges the nuclei of atoms but does not split them apart, as is done in unclear reactors
(E) and merges the nuclei of atoms, unlike atomic reactors that split them apart
首先，澄清关于歧义的问题。前面的诸位NN认为选项B和E中like/unlike结构紧跟在the nuclei of atoms后面，会让人产生the nuclei of atoms与reactor比较的歧义。我认我这种歧义是不存在的，因为从句子的意义角度讲，这两者是不可能相比较的。不能仅根据-like和unlike的比较结构就近修饰-原则来说他会引起两者比较的含义。（尽管like/unlike结构几乎在OG所有的题目中都是就近修饰的）必须结合状语结构比较对象意义类型上是否一致来说明是否引起歧义。(A) fatigue among shift workers, and have raised
(B) fatigue among shift workers, and raised
(C) and fatigue among shift workers while raising
(D) lowered fatigue among shift workers, and raised（C）
OG 11 103
The development of a new
jumbo rocket that is expected to carry the United States into its next
phase of space exploration will be able to deliver a heavier load of
instruments into orbit than the space shuttle and at a lower cost.
(A) The development of a new jumbo
rocket that is expected to carry the United States into its next phase
of space exploration will be able to deliver a heavier load of
instruments into orbit than the space shuttle and at a lower cost.
(B) The development of a new jumbo
rocket is expected to carry the United States into its next phase of
space exploration and be able to deliver a heavier load of instruments
into orbit at a lower cost than the space shuttle.
(C) The new development of a jumbo
rocket, which is expected to carry the United States into its next
phase of space exploration, will be able to deliver a heavier load of
instruments into orbit at a lower cost than the space shuttle.
(D) A newly developed jumbo rocket,
which is expected to carry the United States into its next phase of
space exploration, will be able to deliver a heavier load of
instruments into orbit than the space shuttle can, and at a lower cost.
(E) A newly developed jumbo rocket,
which is expected to carry the United States into its next phase of
space exploration, will be able to deliver a heavier load of
instruments into orbit than the space shuttle and to cost less.
呼……这帖子也真够长的……尤其是最后alohabrian的细心解释，我眼睛贴着电脑屏幕看了n久~~
其实我最开始就没有想过楼上那些问题，所以也没有什么特别的看法……老实说我都没懂为什么前人会那样理解~~
这道题我关注的问题，前面几页也有人提到过，就是关于D选项的解释里面的那几句话，
以下是引用zjlssw在2006-6-28 10:44:00的发言：
我觉得这题目前存在的问题关键是OG对标点的解读该如何理解：
The comma following bombs is paired with the comma following apart, and this comma pair sets off the participial phrase introduced by merging.
D. Illogical and awkward construction attempts to make
merges the second verb of the restrictive clause parallel to powers and does not split, punctuation makes clear this separate action cannot be the case; as is done is awkward and wordy
这两句话是遵循什么样的语法规律的呢？请知道的朋友指教，谢谢
我也认为问题的关键在于这两句话。
而我的理解跟前几页里面两个前辈一样~~
童鞋们，如果选了E，那么AND之前存在逗号，AND后面就应该跟一个完整的，需要主语的句子。。。
而且UNLIKE后面，你们不觉得比较不对等么。。
关于COMMA 的问题。MERGE不可能是第二个动词是因为它前面有个逗号，因为在gmat中，用AND连接两个动词似乎是不允许在AND前面再加逗号的
个人的一点看法，还请高人指点
总结她们两个的观点就是，在gmat中，用AND连接两个动词是不允许在AND前面再加逗号的，而AND前面如果有逗号那么AND后面就应该跟一个完整的，需要主语的句子
“and 连接动词and前面没逗号”的例子到处都是，随便抓一个今天看到的~~
OG11th-135 （直接把正确答案放回原句）
Spanning more than fifty years, Friedrich Miiller's career began in an unpromising apprenticeship as a Sanskrit scholar and
culminated in virtually every honor that European governments and learned societies could bestow.
OG11th-113
The original building and loan associations were organized as limited life funds, whose members made monthly payments on their share subscriptions and then took turns drawing on the funds for home mortgages.
个人看法……希望大家能找例子反驳哈，我找到了也会贴出来的~~
呵呵，我刚才就注意到是你之前回的啦~~
~那就麻烦你再解释一下吧 谢谢~~
(B) Nuclear fusion merging the nuclei of atoms (v.s.) splitting them apart, like nuclear reactors
(B) Nuclear fusion merges the nuclei of atoms (v.s.) splits them apart, like nuclear reactors
B/C的区别可以理解.
但是as nuclear reactors do(as+主+谓)怎么修饰splitting?
恩~~非常需要,现在我极度混乱中......
我觉得这里这道题这么搞有点太复杂了。
首先，要知道gmat表示比较，对比的时候的优选结构：
like/unlike A,B 比较强调A，B这两个东西
A do sth, as B do 强调动作。并且这里注意一点是，as如果放在句首不表比较，如果要放在句首只能用下面的用法：
Just as A do,so B do（as放在句首的用法）
其次，原句的中心在正确选项中最好不要改变
ok，我们来看选项：
A as用法错误，and not错误
B like放句首的时候是优选，但是在句尾不是优选
C 正确，句子工整
D E “，and”后便必须加完整句子，并且，原句是伴随的结构，有主次之分，现在是平等结构无主次，改变句子重心。
个人认为C选项中的as nuclear reactor do 从位置上来看可以作为从句修饰句子最开头的Nuclear fusion,也可作为从句修饰merging...rather than splitting...这一从句。如果是前者，则Nuclear fusion和NR一样（但实质上这两者是相反的），如果是后者则正好符合逻辑。再者，如果nuclear reactor与Nuclear fusion比较，那么应该是as nuclear actor is而不是do，因为要与Nuclear fusion is the force that... 完全对应。
而B选项，是因为like nuclear reactors在这里作为从句修饰句子最开头的Nuclear fusion，NR与NC比较，但与正确逻辑相反，因而B选项错误。
E选项unlike atomic reactors that split them apart作为从句修饰逐句，并没有问题（除了ETS很恶心的把原题中的nuclear偷换成atomic）。。。E选项错是因为merge要作为伴随状语修饰主句。 powers...,and merges...这种表达式有误，NN们已经解释过了~我觉得很有道理。
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