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# The voluminous personal papers of Thomas Alva Edison reveal

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Senior Manager
Joined: 05 Jun 2008
Posts: 291
The voluminous personal papers of Thomas Alva Edison reveal [#permalink]

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25 Dec 2008, 06:08
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The voluminous personal papers of Thomas Alva Edison reveal that his inventions typically sprang to life not in a flash of inspiration but evolved slowly from previous works.
(A) sprang to life not in a flash of inspiration but evolved slowly
(B) sprang to life not in a flash of inspiration but were slowly evolved
(C) did not spring to life in a flash of inspiration but evolved slowly
(D) did not spring to life in a flash of inspiration but had slowly evolved
(E) did not spring to life in a flash of inspiration but they were slowly evolved

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Manager
Joined: 02 Aug 2007
Posts: 221
Schools: Life

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24 Jan 2009, 17:34
This question, I believe, is from the Official Verbal Review. SC #4.
OA is C.
Can someone explain why C and not D? I answered D because his inventions started and stopped in the past.
Senior Manager
Joined: 02 Nov 2008
Posts: 254

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24 Jan 2009, 18:19
x-ALI-x wrote:
This question, I believe, is from the Official Verbal Review. SC #4.
OA is C.
Can someone explain why C and not D? I answered D because his inventions started and stopped in the past.

D is incorrect because of the "had"
Director
Joined: 25 Oct 2006
Posts: 592

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24 Jan 2009, 22:16
x-ALI-x wrote:
can you elaborate?

had slowly evolved - is past perfect form. so usage of past participle is not required here.
Further, C is more idiomatic and parallel: did not spring - evolved

Idiom: Not A But B
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Manager
Joined: 02 Aug 2007
Posts: 221
Schools: Life

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24 Jan 2009, 22:42
priyankur_saha@ml.com wrote:
x-ALI-x wrote:
can you elaborate?

had slowly evolved - is past perfect form. so usage of past participle is not required here.
Further, C is more idiomatic and parallel: did not spring - evolved

Idiom: Not A But B

I will buy the idiom argument, but didn't his inventions start and stop in the past...hence the need for "had"?
Manager
Joined: 04 Jan 2009
Posts: 229

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25 Jan 2009, 18:13
C for me too.

I think the stem talks about reveal and hence had is not reqd.
x-ALI-x wrote:
priyankur_saha@ml.com wrote:
x-ALI-x wrote:
can you elaborate?

had slowly evolved - is past perfect form. so usage of past participle is not required here.
Further, C is more idiomatic and parallel: did not spring - evolved

Idiom: Not A But B

I will buy the idiom argument, but didn't his inventions start and stop in the past...hence the need for "had"?

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: SC-Thomas Alva Edison   [#permalink] 25 Jan 2009, 18:13
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