The survival of coral colonies, which are composed of : GMAT Sentence Correction (SC)
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# The survival of coral colonies, which are composed of

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Manager
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The survival of coral colonies, which are composed of [#permalink]

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06 Mar 2008, 23:08
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The survival of coral colonies, which are composed of innumerable tiny polyps living in a symbiotic relationship with brilliantly colored algae, are being threatened, experts say, not only by pollutants like agriculture runoff, oil slicks, and trash but also by dropped anchors, probing divers, and global warming.
A) are being threatened, experts say, not only by pollutants like
B) are being threatened, experts say, by not only pollutants such as
C) is not only being threatened, experts say, by pollutants such as
D) is not only being threatened, experts say, by pollutants like
E) is being threatened, experts say, not only by pollutants such as

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VP
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07 Mar 2008, 06:02
E, is agrees with survival, not only X but also Y, X and Y need to be parallel
Manager
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17 Mar 2008, 16:38
hmmm,

I understand why "is" is correct.
I understand why "such as" is correct.

I'm having trouble with the parallelism...huntgmat, do you mind providing a little more?
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17 Mar 2008, 17:57
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giantSwan wrote:
hmmm,

I understand why "is" is correct.
I understand why "such as" is correct.

I'm having trouble with the parallelism...huntgmat, do you mind providing a little more?

let me try ..huntgmat sorry if i am hijacking this...

not only X but also Y is correct idiom. And for idiom to be correct X and Y must be parallel. Means if X is noun , Y should also be a noun. If X is a verb then Y should also be a verb and follow same tense.

Since you have understood is and such as , so its between C and E.
take a look at C
is not only being threatened, experts say, by pollutants such as.....but also by droppped pollutants

they are not parallel. X is verb and Y is noun.

E is precise.Both X and Y are nouns.
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18 Mar 2008, 07:00
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Thanks ashkrs,

If you wanted to make C correct , you will need a contruction something like

is not only being threatened, experts say, by pollutants such as.....but alsobeing threatened by droppped pollutants ....

Since we take out "being threatened" outside of not only .... but also .... , the construct should be parallel
with what are you threatened with.
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18 Mar 2008, 07:19
Thanks -- you guys are great. It's making studying for this test MUCH more managable/painless.
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18 Mar 2008, 07:24
Also,

Do either of you have a method for studying idioms?

Or did you just embark on "rote learning" memorizing all of them?

- gS
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18 Mar 2008, 11:26
I am never good in memorizing....
In my notes i note the question when i get a different idiom type question & keep on revising the usage with the examples. That's all i do.....
Re: SC GMATPrep   [#permalink] 18 Mar 2008, 11:26
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