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Geologists believe that

by clock60 » Thu Mar 10, 2011 2:18 pm
hi guys.
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 of 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
oa is D
source og, blue supplement #77


my question
why warning signs for a earthquake can`t be changes in measurements of the strain....as in E, but must be changes in the measured strain across.... as in D
this difference is too elusive for me. i don`t understand og explanation, i tried to search, this problem was discussed earlier but i was not happy with results
thanks
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by finalshot123 » Thu Mar 10, 2011 4:49 pm
let me if my approach was wrong.. this was parallel question..

sudden fluctuations in ...., changes in...., and variations in.....

only D..
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by Night reader » Thu Mar 10, 2011 4:54 pm
you are like me non-native speaker not understanding the meaning of this sentence:)

BUT I got it and marked D, as measurements may not be warning signs for geologists. Measurements IS the product of geologists' work - they define measurements and do all stuff. If you attempt rereading the sentence, this may be apparent to you.

Cheers
clock60 wrote:hi guys.
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 of 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
oa is D
source og, blue supplement #77


my question
why warning signs for a earthquake can`t be changes in measurements of the strain....as in E, but must be changes in the measured strain across.... as in D
this difference is too elusive for me. i don`t understand og explanation, i tried to search, this problem was discussed earlier but i was not happy with results
thanks
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by AIM GMAT » Fri Mar 11, 2011 4:39 am
I agree with finalshot123 and night reader , nice explanations .

I guess use of "of " should be avoided ?? Let me know what is your opinion guys .
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by MAAJ » Fri Mar 11, 2011 6:00 am
What about AMONG in answer choice E? it sounds akward to me... but is it grammatically correct?

...variations among the electrical properties of underground rocks.

...variations in sounds better that's why I choose D :)
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by AIM GMAT » Fri Mar 11, 2011 6:05 am
MAAJ wrote:What about AMONG in answer choice E? it sounds akward to me... but is it grammatically correct?

...variations among the electrical properties of underground rocks.

...variations in sounds better that's why I choose D :)
Agree with you MAAJ for the same reason eliminated E.
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by VivianKerr » Fri Mar 11, 2011 9:40 am
You guys got it. Parallelism on this one! :)
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by clock60 » Fri Mar 11, 2011 11:16 am
hi guys
finally i undestood that this problem tests ||-ism. it is a great point.
but i am still in doubts ( not about ||-ism).
@Night reader
Measurements IS the product of geologists' work - they define measurements and do all stuff. If you attempt rereading the sentence, this may be apparent to you.

i definitely agree that measurements is the product of geologists`work, but in E it is not measurements, it is
changes in measurements that are || with
sudden fluctuations....,deformations.....,changes....., and variations
or changes in E are also product of geologist`work?
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by Night reader » Fri Mar 11, 2011 12:45 pm
Different properties may not be parallel --> changes in measurements can not be warning signs as well as the measurements cannot be such ones. Changes are related to measurements which cannot be || to other expressions. I did imply error in parallelism when questioned understanding of this part. Logic in parallelism (primitive example=apples vs. oranges - sorry) is one of the requirements for parallelism // agree ? :(
clock60 wrote:hi guys
finally i undestood that this problem tests ||-ism. it is a great point.
but i am still in doubts ( not about ||-ism).
@Night reader
Measurements IS the product of geologists' work - they define measurements and do all stuff. If you attempt rereading the sentence, this may be apparent to you.

i definitely agree that measurements is the product of geologists`work, but in E it is not measurements, it is
changes in measurements that are || with
sudden fluctuations....,deformations.....,changes....., and variations
or changes in E are also product of geologist`work?
My knowledge frontiers came to evolve the GMATPill's methods - the credited study means to boost the Verbal competence. I really like their videos, especially for RC, CR and SC. You do check their study methods at https://www.gmatpill.com
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by clock60 » Fri Mar 11, 2011 2:18 pm
hi Night reader
i guest i start to think your idea, but in my own words
we deal here not only with grammer ||. but also with logic or contextual-||-ism
the first part of || elements, enumerated the propeties of earth crust , and and the changes which occured before earthquake, so undelined parts must be also be the same, these changes are out of human control,
but changes in measurements is definitely humans activity, so in this case it is wrong
thank you for clarification
(to me it is pretty tricky question :cry: )
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by Night reader » Fri Mar 11, 2011 2:40 pm
exactly, one of the disasters sold with parallelism in SC to us, non-native speakers, would be the series of not quite logical properties.
clock60 wrote:hi Night reader
i guest i start to think your idea, but in my own words
we deal here not only with grammer ||. but also with logic or contextual-||-ism
the first part of || elements, enumerated the propeties of earth crust , and and the changes which occured before earthquake, so undelined parts must be also be the same, these changes are out of human control,
but changes in measurements is definitely humans activity, so in this case it is wrong
thank you for clarification
(to me it is pretty tricky question :cry: )
My knowledge frontiers came to evolve the GMATPill's methods - the credited study means to boost the Verbal competence. I really like their videos, especially for RC, CR and SC. You do check their study methods at https://www.gmatpill.com
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