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Geologists believe that the warning signs for a major [#permalink]
 24 Apr 2010, 07:55
Question Stats:
60% (01:52) correct
39% (00:53) wrong based on 2 sessions
326. Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth’s crust, changing the measured stain across a fault zone, and varying the electrical properties of underground rocks. (A) changing the measured strain across a fault zone, and varying (B) changing measurements of the strain across a fault zone, and varying (C) changing the strain as measured across a fault zone, and variations of (D) changes in the measured strain across a fault zone, and variations in (E) changes in measurements of the strain across a fault zone, and variations among
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Re: earthquake quake guate tomate [#permalink]
24 Apr 2010, 09:07
D looks best of the lot... what is the OA ?
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Re: earthquake quake guate tomate [#permalink]
25 Apr 2010, 10:36
IMO D - due to parallelism wats the OA ??
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Re: earthquake quake guate tomate [#permalink]
25 Apr 2010, 10:39
IMO D. plural verb + adjective + nounOnly D survives this test.
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Re: earthquake quake guate tomate [#permalink]
25 Apr 2010, 10:43
Ok guys, as far as I know, noboru is not going to like if you simply choose one of the answers from the list. You need to explain why do you think a particular answer is correct. and yeah, noboru is known for NOT posting the OA for long time... 
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Re: earthquake quake guate tomate [#permalink]
27 Apr 2010, 06:17
326. Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth’s crust, changing the measured stain across a fault zone, and varying the electrical properties of underground rocks.
(A) changing the measured strain across a fault zone, and varying
(B) changing measurements of the strain across a fault zone, and varying
(C) changing the strain as measured across a fault zone, and variations of
(D) changes in the measured strain across a fault zone, and variations in
(E) changes in measurements of the strain across a fault zone, and variations among
From sudden fluctuations and 'tilting and other deformations' we can see that we need noun forms to complete the parallelism.
B,D,E provide noun forms for the first party of the sentence and C,D,E provide the noun form for the second part 'variations'. Only D provides the correct idiomatic use of 'variations in'. We can zero in on the answer D actually just based on 'variations in'
'Variation of' and 'Variations among' are both wrong use of variations. Damn ! ..Had to google that for long to confirm.
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Re: earthquake quake guate tomate [#permalink]
27 Apr 2010, 07:54
I picked (E) but now understand that "variations among" is wrong
Good explanation by sanlitun
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Re: earthquake quake guate tomate [#permalink]
27 Apr 2010, 15:00
326. Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth’s crust, changing the measured stain across a fault zone, and varying the electrical properties of underground rocks.
(A) changing the measured strain across a fault zone, and varying
Here the fluctuations and changes are two independent signs and are equally important. Changes is not a sub warning sign. Hence it has to be changes.
(B) changing measurements of the strain across a fault zone, and varying -Not parallel
(C) changing the strain as measured across a fault zone, and variations of-this is verbose compared to A, also changing
(D) changes in the measured strain across a fault zone, and variations in -
(E) changes in measurements of the strain across a fault zone, and variations among - This is also verbose compared to D.
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Re: earthquake quake guate tomate [#permalink]
27 Apr 2010, 19:13
my choice is D as it is very clear and has no mistakes. I am not an SC expert so i can't write more.
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Re: earthquake quake guate tomate [#permalink]
29 Apr 2010, 15:51
hgp2k wrote: Ok guys, as far as I know, noboru is not going to like if you simply choose one of the answers from the list. You need to explain why do you think a particular answer is correct. and yeah, noboru is known for NOT posting the OA for long time... jeje, OK, you got it: OA is D. Thank u all. PS: From 680 to 620. Now it´s my turn. 3 months to go.
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Re: earthquake quake guate tomate [#permalink]
12 Sep 2010, 06:35
First of all, i cant understand this question at all. but i surely know that it has something to do with parallelism.. See how i cracked it..  the sentence says that there is more than one sign.. First one, is clearly given in the sentence.. The participial phrase can't be the sign.. because, it only modifies the independent phrase, just before the comma. So, A - out (there is no additional sign) B - out (there is no additional sign again) C - out (because, one participial phrase cant modify another participial phrase) D - this is correct for me.. (maintains the parallelism with the first sign.. and variations in is the correct idiom) E - variations among is wrong. I know that this is a crazy way to choose..
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Re: earthquake quake guate tomate [#permalink]
12 Sep 2010, 06:53
Good question, it look familiar.. can you say what's the source?
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Re: earthquake quake guate tomate [#permalink]
12 Sep 2010, 11:37
noboru wrote: 326. Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth’s crust, changing the measured stain across a fault zone, and varying the electrical properties of underground rocks.
(A) changing the measured strain across a fault zone, and varying
(B) changing measurements of the strain across a fault zone, and varying
(C) changing the strain as measured across a fault zone, and variations of
(D) changes in the measured strain across a fault zone, and variations in
(E) changes in measurements of the strain across a fault zone, and variations among to maintain ||ism we should look for nouns as the main sentence has Fluctuations, Deformations.. Only D and E have Changes and Variations. Now variation in is correct not variations among is not So D is correct
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Re: earthquake quake guate tomate [#permalink]
14 Sep 2010, 02:40
The underlined portion at first seemed to confuse me because it appeared that "changing the measured strain across fault zone and varying the electrical..." could be the end result of deformation in the earth's crust. And hence option A nd B would become the contenders in that case. However the "comma and" resolved my confusion. The four reasons indicated stand independent and option D maintains parallelism
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Re: earthquake quake guate tomate [#permalink]
23 Sep 2010, 09:07
The world "tilting" is surely a trap here though i feel
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Re: Geologists believe that the warning signs for a major [#permalink]
26 Sep 2012, 00:42
Geologists believe that the warning signs for a major earthquake may include 1. sudden fluctuations in local seismic activity, 2. tilting and other deformations of the Earth's crust, changing the measured stain across a fault zone, and 3. varying the electrical properties of underground rocks. 1, 2, 3 must match their form, which are nouns (fluctuations, tilting, variations): eliminate A, B "changing-" describes the Earth's crust (so this is correct): eliminate D, E Left with C
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Re: Geologists believe that the warning signs for a major [#permalink]
18 Oct 2012, 23:31
Guys I would like to ask all of you that how can "sudden fluctuations" and "tilting" be parallel? "tilting" is a simple gerund and "fluctuations" is an action noun, and according to MGMAT SC, simple gerunds and action nouns can't be parallel. So the sentence goes like this: Geologists believe that the warning signs for a major earthquake may include [sudden fluctuations in( local seismic activity, tilting and other deformations of the earth's crust)], changing the measured strain across a fault zone, and variations in/of the electrical properties of underground rocks. Regarding the preposition, MGMAT says that there is no compulsion on the prepositions to be the same. Correct me if I am wrong. Verbal experts noburu, metallicafan, Tommy please help.
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Re: Geologists believe that the warning signs for a major
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