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Thermal scanning

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Thermal scanning

by prosaicblabber » Sun May 23, 2010 7:42 pm
New techniques in thermal-scanning photography, a process that records radiation from surface areas, makes it possible to study the effects of calefaction, or warming, of a river in greater detail than ever before.

(A) makes it possible to study the effects of calefaction, or warming, of a river in greater detail than ever before

(B) make it possible to study, in greater detail, the effects of calefaction, or warming, of a river than ever before

(C) have made it possible to study in greater detail than ever before the effects of calefaction, or warming, of a river

(D) make possible the study of the effects of calefaction, or warming, of a river in greater detail than it ever was before

(E) has made it more possible than ever before to study in greater detail the effects of calefaction, or warming, of a river

OA-A[/img]
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by grockit_andrea » Mon May 24, 2010 7:22 am
prosaicblabber wrote:New techniques in thermal-scanning photography, a process that records radiation from surface areas, makes it possible to study the effects of calefaction, or warming, of a river in greater detail than ever before.

(A) makes it possible to study the effects of calefaction, or warming, of a river in greater detail than ever before

(B) make it possible to study, in greater detail, the effects of calefaction, or warming, of a river than ever before

(C) have made it possible to study in greater detail than ever before the effects of calefaction, or warming, of a river

(D) make possible the study of the effects of calefaction, or warming, of a river in greater detail than it ever was before

(E) has made it more possible than ever before to study in greater detail the effects of calefaction, or warming, of a river

OA-A[/img]
a. "New techniques" doesn't agree with "makes," so this is incorrect.
b. The placement of "in greater detail" is awkward here. It should be next to "than ever before" for maximum clarity.
c. This is correct. "New techniques" agrees with "have made it possible," and the present-perfect tense is also appropriate.
d. "In greater detail than it ever was before" should be modifying "study," so it's poorly placed here.
e. "More possible than ever before" and "greater detail" are redundant; you don't need to use two comparisons here.

I don't agree with the OA you've posted here.
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by maiahoji » Mon May 24, 2010 7:41 am
I also think there is something wrong in the OA!
Unless it is that "makes" is related to "a process that records radiation..."
But it should be related to New techniques... so it should be MAKE!
For me it is C
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by money9111 » Mon May 24, 2010 8:49 am
yes this is not correct... can you check to see if this was a typo
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by prosaicblabber » Mon May 24, 2010 9:41 pm
Even i was suspicious of the OA that's why i posted it here.
The source was 1000 SC files .
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by grockit_andrea » Tue May 25, 2010 3:20 am
I googled this question; people have discussed it on other GMAT forums, and have talked about the OA being C. If your source says it's A, I'd assume that there's a typo in that source.
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by muralithe1 » Tue May 25, 2010 6:17 pm
Sorry Andrea,
May be my doubt is a bit crazy.

If the option 'C' is correct the sentence turns out as follows.

New techniques in thermal-scanning photography, a process that records radiation from surface areas, have made it possible to study in greater detail than ever before the effects of calefaction, or warming, of a river.


Isn't it a comma(,) is missing after 'Ever before' ..It seems like 'before the effects of calefaction' , study has been done.

I am missing something...

Thanks in Advacne
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