Art historians are using a process known as infrared : GMAT Sentence Correction (SC)
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# Art historians are using a process known as infrared

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Manager
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Art historians are using a process known as infrared [#permalink]

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03 May 2007, 15:22
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Art historians are using a process known as infrared scanning in analyzing the Mona Lisa to determine if it has been altered since completion and if Leonardo da Vinci first sketched the figure in black, as done by many artists of the ime.
A.
B. if it had been altered since completion and if Leonardo da Vinci first sketched the figure in black, a practice employed
C. whether it has been altered since completion and whether Leonardo da Vinci first sketched the figure in black, a practice employed
D. whether it was altered since completion and whether Leonardo da Vinci first sketched the figure in black, as was done
E. whether it had been altered since completion and whether Leonardo da Vincifirst sketched the figure in black, a practice done

I chose C, which is correct, but I also thought D would be okay..

With cloning technology, scientists are approaching what has long been the ultimate goal of modern husbandry: achieving a consistency of quality and production in farm animals as once thought to be limited to manufactured goods.
A. ..
B. achieving farm animals with a consistency of quality and production as were once thought of as
C. achieving in farm animals a consistency of quality and production that was once thought to be
D. achievement of farm animals whose consistency of quality and production are the same as what were once thought to be
E. achievement of farm animals at a consistency of quality and production once thought of as

I suppose "achievement of" is wrong??
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03 May 2007, 20:42
Jamesk486 wrote:
Art historians are using a process known as infrared scanning in analyzing the Mona Lisa to determine if it has been altered since completion and if Leonardo da Vinci first sketched the figure in black, as done by many artists of the ime.
A.
B. if it had been altered since completion and if Leonardo da Vinci first sketched the figure in black, a practice employed
C. whether it has been altered since completion and whether Leonardo da Vinci first sketched the figure in black, a practice employed
D. whether it was altered since completion and whether Leonardo da Vinci first sketched the figure in black, as was done
E. whether it had been altered since completion and whether Leonardo da Vincifirst sketched the figure in black, a practice done

I chose C, which is correct, but I also thought D would be okay..

(C) it is. It can not be (D) because "since" must go with present perfect tense
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04 May 2007, 00:17
For me the answer of the second is C.

As we need "whether" C, D and E are selected,
As we need "has been altered" C is finally selected.

Last edited by F75 on 04 May 2007, 01:09, edited 1 time in total.
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04 May 2007, 00:23
One more for C) in the second sentence. It seems to be the best answer.

With cloning technology, scientists are approaching what has long been the ultimate goal of modern husbandry: achieving a consistency of quality and production in farm animals as once thought to be limited to manufactured goods.

A. achieving a consistency of quality and production in farm animals as once thought to be
>> "as once thought to be" incorrect usage

B. achieving farm animals with a consistency of quality and production as were once thought of as
>> incorrect usage in "achieving farm animals" and "production as were once thought of"

C. achieving in farm animals a consistency of quality and production that was once thought to be
correct

D. achievement of farm animals whose consistency of quality and production are the same as what were once thought to be
>> change of meaning in "achievement of farm animals"

E. achievement of farm animals at a consistency of quality and production once thought of as
>> change of meaning in "achievement of farm animals"
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04 May 2007, 00:24
C for the second sentence. Also it is advisable if only one CR/SC is there in a post.
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