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# Gas hydrates, chemical compounds of water and natural gas,

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Intern
Joined: 02 Sep 2006
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Gas hydrates, chemical compounds of water and natural gas, [#permalink]

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11 Dec 2006, 17:17
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Gas hydrates, chemical compounds of water and natural gas, are increasingly being
studied for their potential to be huge reservoirs of energy, possibly causing sea floor
instability, and
significant contributors to global warming.

A. to be huge reservoirs of energy, possibly causing sea floor instability, and

B. to be huge reservoirs of energy, possibly causing sea floor instability, and even as

C. as huge reservoirs of energy, possibly causing sea floor instability, and

D. as huge reservoirs of energy, and the possible cause of sea floor instability,

E. as huge reservoirs of energy, as possible causes of sea floor instability, and even
as

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Director
Joined: 28 Dec 2005
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11 Dec 2006, 17:26
going with D

A. to be huge reservoirs of energy, possibly causing sea floor instability, and

B. to be huge reservoirs of energy, possibly causing sea floor instability, and even as

C.as huge reservoirsof energy, possibly causing sea floor instability, and

D. as huge reservoirs of energy, and the possible cause of sea floor instability,

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Senior Manager
Joined: 17 Aug 2005
Posts: 387

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Location: Boston, MA

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11 Dec 2006, 19:06
E - straight parallelism

D is incorrect because the ", and" spoils the parallelism and the phrase "significant contributors to global warming" cannot act as an absolute phrase in this structure.

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Director
Joined: 24 Aug 2006
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11 Dec 2006, 19:09
Gas hydrates are increasingly being studied for their potential as X, as Y, and even as Z.

I'm with E
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SVP
Joined: 08 Nov 2006
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11 Dec 2006, 23:56
Yurik79 wrote:
Why C is wrong?

Let's plug C into the original sentence. We get.

Gas hydrates, chemical compounds of water and natural gas, are increasingly being studied for their potential as huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.

Besides the lack of parallelism, the meaning is distorted.

The sentence with C in it indicates incorrectly that, 'sea floor instability' is caused by the studies

The phrase 'significant contributors' is incorrect.
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Manager
Joined: 28 Feb 2006
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12 Dec 2006, 02:34
Why not B guys?

I thought "potential to be" was the correct idiom rather than "potential as".
A is incorrect because it is missing the 'as'.
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Senior Manager
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12 Dec 2006, 08:15
"potential as" and "potential to be" are both idiomatic

New England's potential as an energy giant depends on whether public and private universities can combine forces.

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Manager
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12 Dec 2006, 14:35
buckkitty wrote:
"potential as" and "potential to be" are both idiomatic

New England's potential as an energy giant depends on whether public and private universities can combine forces.

I see. Thanks buckkitty.

In that case I go for E as well.

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12 Dec 2006, 14:35
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