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# New techniques in thermal-scanning photography, a process

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Director
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New techniques in thermal-scanning photography, a process [#permalink]

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30 Mar 2005, 10:43
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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

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Director
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30 Mar 2005, 10:50
A is correct.

The "it" refers to the "effects of calefaction"

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VP
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30 Mar 2005, 11:36
bet B and C, my pick is "C". "Techniques" is plural, so needs a plural verb, "ever before" indicates the use of perfect tense, I believe.

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Director
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30 Mar 2005, 11:38
C it is

here is why

<New techniques in thermal-scanning photography>, <Appositive phrase>, ax verb + verb complements + essential clause

A & E lacks subject verb argreement
B & D have tense issue and sounds awkward
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Praveen

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SVP
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30 Mar 2005, 11:48
Totally agree with baner.

gmat2me2 wrote:
The "it" refers to the "effects of calefaction"

The "it" refers to "to study in greater detail than ever before the effects of calefaction, or warming, of a river".

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Director
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30 Mar 2005, 13:50
(C) it is...new techniques can't "make...." thus (A) is wrong.

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Manager
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30 Mar 2005, 14:53
praveen_rao7 wrote:
C it is

here is why

<New techniques in thermal-scanning photography>, <Appositive phrase>, ax verb + verb complements + essential clause

A & E lacks subject verb argreement
B & D have tense issue and sounds awkward

Praveen,

Can you explain <Appositive phrase>, and verb complements as a concept

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Manager
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30 Mar 2005, 14:54
my choice is C

ever before required present perfect

"in greater detail than ever before" properly modified "study"

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Senior Manager
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31 Mar 2005, 10:54
"C"

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

makes is incorrect. Plural subject.
(B) make it possible to study, in greater detail, the effects of calefaction, or warming, of a river than ever before

Changes the intended meaning.
(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

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

Should be have not has

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Director
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31 Mar 2005, 17:41
Folaa3 wrote:
Any OA/OE?

Yes, It is (C).

(B) has another problem. If we remove paranthetical element "in greater details", sentence becomes invalid because of "than". I guess this can be an another reason to refute (B). Correct me if I am wrong.

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31 Mar 2005, 19:24
New tehcniques are plural and need a plural verb 'make'.

(A) is out. So is (E).

(D) is out. 'it' cna refer to river or study

Between B and C, I'll go with C.

(B) make it possible to study, in greater detail, the effects of calefaction, or warming, of a river than ever before
- use of commas has made the sentence disjointed.
- 'in greater detail' modies study, while 'effects of calefaction' and 'warming' seems modifying detail when they should be modifying river.

(C) have made it possible to study in greater detail than ever before the effects of calefaction, or warming, of a river
- past perfect tense suggests techniques are still useful even today.

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31 Mar 2005, 19:24
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# New techniques in thermal-scanning photography, a process

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