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Scientists who studied the famous gold field known as Serra

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Scientists who studied the famous gold field known as Serra [#permalink]

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New post 09 Apr 2009, 05:06
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Scientists who studied the famous gold field known as Serra Pelada concluded that the rich lode was not produced by the accepted methods of ore formation but that swarms of microbes over millions of years concentrated the gold from jungle soils and rivers and rocks.

A. not produced by the accepted methods of ore formation but that swarms of microbes over millions of years
B. not produced by the accepted methods of ore formation but instead swarms of microbes over millions of years that
C. not produced by the accepted methods of ore formation but swarms of microbes over millions of years that
D. produced not by the accepted methods of ore formation but by swarms of microbes that over millions of years
E. produced not by the accepted methods of ore formation but that swarms of microbes over millions of years

Source : GmatPrep test 1. Q#22.
[Reveal] Spoiler: OA

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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 09 Apr 2009, 09:38
I will go with D.
Produced Not by X but by Y. X and Y being parallel.

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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 09 Apr 2009, 10:20
jeevanchand wrote:
I will go with D.
Produced Not by X but by Y. X and Y being parallel.

Why not A ?
Pelada concluded that...but that swarms...

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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 09 Apr 2009, 22:46
Agree with D. OA?

Why not A:
not produced by X but that Y.. not parallel and doesnt make sense

Why D:
produced not by X but by Y that...( here 'that' modifies Y )

GGUY wrote:
jeevanchand wrote:
I will go with D.
Produced Not by X but by Y. X and Y being parallel.

Why not A ?
Pelada concluded that...but that swarms...

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New post 10 Apr 2009, 03:29
OA is D.
thanks Economist, jeevanchand

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New post 12 Apr 2009, 05:53
GGUY wrote:
Scientists who studied the famous gold field known as Serra Pelada concluded that the rich lode was not produced by the accepted methods of ore formation but that swarms of microbes over millions of years concentrated the gold from jungle soils and rivers and rocks.

A. not produced by the accepted methods of ore formation but that swarms of microbes over millions of years
B. not produced by the accepted methods of ore formation but instead swarms of microbes over millions of years that
C. not produced by the accepted methods of ore formation but swarms of microbes over millions of years that
D. produced not by the accepted methods of ore formation but by swarms of microbes that over millions of years
E. produced not by the accepted methods of ore formation but that swarms of microbes over millions of years

Source : GmatPrep test 1. Q#22.


IMO D).

not x (by the accepted methods of ore formation) but (by swarms of microbes) that "over million of years"

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New post 16 Dec 2010, 16:58
not by x but by y is crucial here.

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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 19 Dec 2010, 20:52
+1 D 8-)
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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 04 Mar 2012, 10:45
I agree
produced not by x BUT by y...

(D)

GGUY wrote:
Scientists who studied the famous gold field known as Serra Pelada concluded that the rich lode was not produced by the accepted methods of ore formation but that swarms of microbes over millions of years concentrated the gold from jungle soils and rivers and rocks.

A. not produced by the accepted methods of ore formation but that swarms of microbes over millions of years
B. not produced by the accepted methods of ore formation but instead swarms of microbes over millions of years that
C. not produced by the accepted methods of ore formation but swarms of microbes over millions of years that
D. produced not by the accepted methods of ore formation but by swarms of microbes that over millions of years
E. produced not by the accepted methods of ore formation but that swarms of microbes over millions of years

Source : GmatPrep test 1. Q#22.

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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 04 Mar 2012, 23:11
A nice parallelism question.

Only D has the second "by" to be parallel to the action which indicates the cause of rich lode.

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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 31 Jul 2012, 20:58
In reply to why not A.... in this example concluded that and but that swarms of are not the two similar activities to check their parallelism..here the scientist concluded that rich lode was not produced a)by the accepted methods b)but by microbes over millions of years ....

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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 17 Oct 2014, 14:29
Is "but instead" in B considered redundant?

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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 26 Sep 2015, 01:19
A similar question came in my actual GMAT, I know "Not X but rather Y" is correct idiom. Is "Not X but instead Y" also a correct idiom?

mikemcgarry can you please guide.
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Re: Scientists who studied the famous gold field known as Serra [#permalink]

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New post 19 Aug 2017, 07:27
Parallelism

In A, “…not by X but that Y…” doesn’t maintain parallelism.
In B, “…not by X but instead Y…” is not parallel. Moreover, “instead” is redundant here.
In C, “…not by X but Y…” is not parallel. “by” is needed after “but”.
In D, “…not by X but by Y…” is parallel. Moreover, X and Y are parallel too. Hence, D is the best choice.
In E, “…not by X but Y…” is not parallel.
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Re: Scientists who studied the famous gold field known as Serra   [#permalink] 19 Aug 2017, 07:27
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