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New techniques in thermal-scanning photography, a process

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New techniques in thermal-scanning photography, a process [#permalink] New post 09 Dec 2008, 06:23
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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
[Reveal] Spoiler: OA
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Re: ever before [#permalink] New post 09 Dec 2008, 08:37
B

techniques (plural).........make it.....
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Re: ever before [#permalink] New post 09 Dec 2008, 17:42
C
have made it possible....than ever before
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Re: ever before [#permalink] New post 11 Dec 2008, 10:19
IMO C

(A) makes it possible to study the effects of calefaction, or warming, of a river in greater detail than ever before (Techniques - should be make)
(B) make it possible to study, in greater detail, the effects of calefaction, or warming, of a river than ever before (in greater detail is wrongly placed)
(C) have made it possible to study in greater detail than ever before the effects of calefaction, or warming, of a river ---- Correct
(D) make possible the study of the effects of calefaction, or warming, of a river in greater detail than it ever was before (make possible the study is wrong)
(E) has made it more possible than ever before to study in greater detail the effects of calefaction, or warming, of a river ---- (Techniques ----should be have)

Last edited by jahnaviyeruva on 11 Dec 2008, 16:47, edited 1 time in total.
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Re: ever before [#permalink] New post 13 Feb 2009, 19:35
OA is C
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Re: SC ever before [#permalink] New post 09 Jun 2010, 05:13
I went with option B bt OA says it is C.
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Re: SC ever before [#permalink] New post 09 Jun 2010, 06:09
I initially picked C but then the construction "...in greater detail than ever before the effects..." didn't sound very pleasing to me. And so I picked D...

Can anybody tell me what is wrong with D?
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Re: SC ever before [#permalink] New post 09 Jun 2010, 07:38
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Can anybody explain that why is option B not correct and C is the answer.

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Re: SC ever before [#permalink] New post 09 Jun 2010, 07:55
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gaurav2k101 wrote:
Can anybody explain that why is option B not correct and C is the answer.


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

This is a subtle case of a misplaced modifier. We need "than ever before" to be directly linked to "study in greater detail"

Here it sounds more like we're saying "The effects of calefaction or warming of a river than ever before" which creates a disconnect from the intended comparison.

The excessive use of commas to create modifiers within modifiers is also awkward, though this is a secondary problem.

Placement of phrases is an important factor, and bears a higher priority than style or wordiness.
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Re: SC ever before [#permalink] New post 09 Jun 2010, 10:51
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Yes i like the post. I will like to add one more thing -

We use simple present tense for - facts, habitual action.
e.g Sun rises in the East ( a fact)
Ron jogs 3 miles every morning (a habit)

I don't see any of these cases w.r.t "New techniques in thermal-scanning photography".
The statement is telling me that such new techniques which don't exist sometime in the past now exist and are useful to study the effects of blah blah in greater detail. The use of simple present tense make will NOT be correct.

blah blah = the effects of calefaction, or warming, of a river

Hence I go with present perfect - "have made it possible to study". C it is.

AbhayPrasanna wrote:
gaurav2k101 wrote:
Can anybody explain that why is option B not correct and C is the answer.


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

This is a subtle case of a misplaced modifier. We need "than ever before" to be directly linked to "study in greater detail"

Here it sounds more like we're saying "The effects of calefaction or warming of a river than ever before" which creates a disconnect from the intended comparison.

The excessive use of commas to create modifiers within modifiers is also awkward, though this is a secondary problem.

Placement of phrases is an important factor, and bears a higher priority than style or wordiness.

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Re: SC ever before [#permalink] New post 09 Jun 2010, 21:43
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can you guys please clarify as to what does "IT" refers to in option C.

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

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Re: SC ever before [#permalink] New post 09 Jun 2010, 21:53
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mustdoit wrote:
can you guys please clarify as to what does it refers to in option C.

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



Here the "it" is used as a pronoun to anticipate "the effects..."

"have made the effects of (...) possible to study in greater detail..."

The pronoun is introduced before the antecedent.

eg. I love it when the sky is clear.
or, Your abstruse approach makes it difficult to understand the solution.

We are describing the antecedent using a pronoun modifier. This is perfectly acceptable.
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Re: SC ever before [#permalink] New post 09 Jun 2010, 22:16
mustdoit wrote:
can you guys please clarify as to what does "IT" refers to in option C.

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



Sorry. I was watching this discussion. There is a nice discussion about the usage of "it" on this thread -

sc-australia-76438.html?highlight=SaraiGMAXonline

As explained by GMAT Instructor.

1. It can have a referrent
2. Or it can be used as expletive (place holder), which doesnt refer to anything

My 2 cents -
What we should worry about is whether "it" is ambiguous. Unless that happens don't worry too much. :)

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Re: SC ever before [#permalink] New post 16 Jun 2010, 05:28
One way to understand why B is wrong is that B has so many commas, you can likely to eliminate immediately in Gmat since Gmat looks for short, precise and clear sentence
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Re: SC ever before [#permalink] New post 18 Jun 2010, 02:17
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I went with B over C although I liked it for its present perfect tense because "the effects of calefaction, or warming, of a river" in C is just way too detached from "the study". Almost like by the time I got to "the effects.... ", kind of lost focus of "the study"..... :cry: B did better on that front by giving sufficient emphasis to the content of the study (inspite of the commas and all)

GMAT english seems to be very different from everyday English- but then not like I'm a native English speaker anyway :-D

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Re: SC ever before [#permalink] New post 13 Aug 2010, 01:59
C the first time i saw the choice

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Re: SC ever before [#permalink] New post 13 Jun 2011, 07:37
Answer C. Subject -Verb Agreement.
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Re: SC ever before [#permalink] New post 13 Jun 2011, 09:04
changed my mind from B to C after the explanations
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Re: SC ever before [#permalink] New post 13 Jun 2011, 17:54
IMO c is not better . it doesn;t sound very well.. c--have made it possible to study in greater detail than ever before the effects of calefaction, or warming, of a river

I think the effects og calefaction of a river should follow the study. it is the object of the study.

so I think it will be better when we say that : have made it possible to study the effects of calefaction,or warming, of a river in greater detail than ever before.

how about this one ?
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Re: SC ever before [#permalink] New post 14 Jun 2011, 06:26
It is C
First of all the verb must be in agreement with the plural subject. So 'make' and 'has' are out. Only C brings in the comparison properly
Re: SC ever before   [#permalink] 14 Jun 2011, 06:26
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