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# Art historians are using a process known as infrared

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Senior Manager
Joined: 12 Mar 2006
Posts: 363

Kudos [?]: 75 [0], given: 3

Schools: Kellogg School of Management
Art historians are using a process known as infrared [#permalink]

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29 Oct 2006, 16:17
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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 time.
(A) if it has been altered since completion and if Leonardo da Vinci first sketched the figure in black, as done
(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 Vinci first sketched the figure in black, a practice done

Kudos [?]: 75 [0], given: 3

VP
Joined: 25 Jun 2006
Posts: 1161

Kudos [?]: 190 [0], given: 0

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29 Oct 2006, 23:06
C for me.

a and b are wrong because of "if".

d is wrong because of "was". it should be present tense.

e is wrong because of "done". You don't do a practice, but employ it.

Kudos [?]: 190 [0], given: 0

Senior Manager
Joined: 17 Oct 2006
Posts: 432

Kudos [?]: 30 [0], given: 0

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29 Oct 2006, 23:14
Its D for me.

whether is better than if so A and B are out. has been in C seems to indicate an event which has started in past and still going. E is out for the use of had been and the last part of sentence is incorrect.

Kudos [?]: 30 [0], given: 0

Director
Joined: 23 Jun 2005
Posts: 840

Kudos [?]: 86 [0], given: 1

GMAT 1: 740 Q48 V42

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29 Oct 2006, 23:20
Didn't you or someone with a very similar name post this same question already?
Hope you didn't get it wrong twice .

Kudos [?]: 86 [0], given: 1

Intern
Joined: 23 Aug 2006
Posts: 8

Kudos [?]: 1 [0], given: 0

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29 Oct 2006, 23:42
I am for 'C'.

'D' is out because 'whether it was altered since completion' is a wrong construction. Typically 'since' is preceded by 'had been or has been' depending upon the time of action.

Thanks.

Kudos [?]: 1 [0], given: 0

Intern
Joined: 23 Aug 2006
Posts: 8

Kudos [?]: 1 [0], given: 0

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29 Oct 2006, 23:42
I am for 'C'.

'D' is out because 'whether it was altered since completion' is a wrong construction. Typically 'since' is preceded by 'had been or has been' depending upon the time of action.

Thanks.

Kudos [?]: 1 [0], given: 0

VP
Joined: 14 May 2006
Posts: 1399

Kudos [?]: 223 [0], given: 0

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29 Oct 2006, 23:49
I will go with D, don't like "has been" in C and the "practice employed"

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VP
Joined: 21 Mar 2006
Posts: 1124

Kudos [?]: 49 [0], given: 0

Location: Bangalore

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30 Oct 2006, 01:12
u2lover wrote:
I will go with D, don't like "has been" in C and the "practice employed"

since has to be used with a present perfect tense to indicate that that the action is continued upto present day. Add me to the C list.

Kudos [?]: 49 [0], given: 0

Senior Manager
Joined: 19 Jul 2006
Posts: 358

Kudos [?]: 8 [0], given: 0

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30 Oct 2006, 01:20
C .

Last time same question was posted on 22th oct by prude_sb.
Many people selected C and few selected D. But OA was not posted.

Kudos [?]: 8 [0], given: 0

VP
Joined: 15 Jul 2004
Posts: 1439

Kudos [?]: 218 [0], given: 13

Schools: Wharton (R2 - submitted); HBS (R2 - submitted); IIMA (admitted for 1 year PGPX)

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30 Oct 2006, 05:38
AK wrote:
C .

Last time same question was posted on 22th oct by prude_sb.
Many people selected C and few selected D. But OA was not posted.

I chose C last time as well and I still stick with it. The Alteration could NOT have happened BEFORE the completion; Using Simple Past Tense (Was altered since completion) does not make it clear which came first - the alteration or the completion.

Kudos [?]: 218 [0], given: 13

Director
Joined: 06 Sep 2006
Posts: 734

Kudos [?]: 49 [0], given: 0

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30 Oct 2006, 14:49
Well I read somewhere GMAT prefers 'whether' over 'if' on situations like that...

So, A & B out...

C is good.

Kudos [?]: 49 [0], given: 0

Senior Manager
Joined: 12 Mar 2006
Posts: 363

Kudos [?]: 75 [0], given: 3

Schools: Kellogg School of Management

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31 Oct 2006, 20:25
anandsebastin wrote:
Didn't you or someone with a very similar name post this same question already?
Hope you didn't get it wrong twice .

thanks anand i forgot that I had posted this and posted it again OA is C

Kudos [?]: 75 [0], given: 3

31 Oct 2006, 20:25
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