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Industrialization and modern methods of insect control have [#permalink]
 12 Aug 2009, 17:03
Question Stats:
24% (01:54) correct
75% (00:56) wrong based on 0 sessions
Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.
A. while at the same time they have introduced some 100,000 dangerous chemical pollutants, having
B. while at the same time introducing some 100,000 dangerous chemical pollutants that have
C. while they have introduced some 100,000 dangerous chemical pollutants at the same time, which have
D. but introducing some 100,000 dangerous chemical pollutants at the same time that have
E. but at the same time introducing some 100,000 dangerous chemical pollutants, having
please explain your reasoning..
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Re: SC : Industrialization and modern methods [#permalink]
12 Aug 2009, 21:37
ugimba wrote: Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.
A. while at the same time they have introduced some 100,000 dangerous chemical pollutants, having
B. while at the same time introducing some 100,000 dangerous chemical pollutants that have
C. while they have introduced some 100,000 dangerous chemical pollutants at the same time, which have
D. but introducing some 100,000 dangerous chemical pollutants at the same time that have
E. but at the same time introducing some 100,000 dangerous chemical pollutants, having
please explain your reasoning.. To me a structure of the sentence has the following logic: Industrialization and modern methods...have improved the standard of living...while introducing dangerous chemical pollutants...[polutants] have gone unregulated since they (pollutants) were developed... using 2/3 rule: While vs. but - While wins. so we can eliminate D&E In C "which" modifies time A says that "Industrialization and methods of insects contorol..having gone (sounding awkward at least) unregulated." I think the meaning is distorted. So B wins.
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Re: SC : Industrialization and modern methods [#permalink]
11 Sep 2009, 08:29
Going with B on this one.
A & E. Having is very akward.
C. There's no clear referent to they.
D. But introducing - very bad.
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Re: SC : Industrialization and modern methods [#permalink]
13 Jun 2010, 08:20
while at the same time is not wordy?? Thanks,
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Re: SC : Industrialization and modern methods [#permalink]
14 Jun 2010, 11:57
noboru wrote: while at the same time is not wordy??
Thanks, I mean redundant. Could anybody please clarify?
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Re: SC : Industrialization and modern methods [#permalink]
19 Jun 2010, 03:29
noboru wrote: noboru wrote: while at the same time is not wordy??
Thanks, I mean redundant. Could anybody please clarify? Nobody is going to answer this??
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Re: SC : Industrialization and modern methods [#permalink]
30 Jun 2010, 08:38
Its close between B & D.
I will go with B as 'that' clause in the end modifies pollutants that have gone unregulated.
'that' clause modifies time in D instead of pollutants located in the end of sentence.
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Re: SC : Industrialization and modern methods [#permalink]
30 Jun 2010, 10:25
noboru wrote: noboru wrote: noboru wrote: while at the same time is not wordy??
Thanks, I mean redundant. Could anybody please clarify? Nobody is going to answer this?? not redudant at all... while (signals contrast) at the same time (signals 'in conjunction with') ... how's that redundant?
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Re: SC : Industrialization and modern methods [#permalink]
30 Jun 2010, 10:29
tomirisk wrote:
using 2/3 rule:
While vs. but - While wins. so we can eliminate D&E
I wouldn't be on the 2/3 rule... i find it unreliable. don't eliminate "but" just because it showed up only 2 times. eliminate the answer choices based on other issues in the sentences.
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Re: SC : Industrialization and modern methods [#permalink]
26 Nov 2010, 11:32
noboru wrote: noboru wrote: while at the same time is not wordy??
Thanks, I mean redundant. Could anybody please clarify? Here's my take on why A is not suitable: Consider this part: "..while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually X.." the problem with the modifier is that it can be taken to refer 'they have introduced'. If you read the stimulus carefully this ambiguity will become evident. Remember, verb modifiers do not need to touch the verb that they modify. In B, the modifier clearly refers to the noun chemical pollutant, which it is actually supposed to modify.. Hope this helps.
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Re: SC : Industrialization and modern methods [#permalink]
26 Nov 2010, 12:51
OK, I agree with that, but...what does your explanation has to do with "while at the same time" being or not redundant? Thanks! naish wrote: noboru wrote: noboru wrote: while at the same time is not wordy??
Thanks, I mean redundant. Could anybody please clarify? Here's my take on why A is not suitable: Consider this part: "..while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually X.." the problem with the modifier is that it can be taken to refer 'they have introduced'. If you read the stimulus carefully this ambiguity will become evident. Remember, verb modifiers do not need to touch the verb that they modify. In B, the modifier clearly refers to the noun chemical pollutant, which it is actually supposed to modify.. Hope this helps. _________________
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Re: SC : Industrialization and modern methods [#permalink]
02 Dec 2010, 22:52
Between B,C and D that has a clear referrant in B.Hence, B prevails.
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Re: SC : Industrialization and modern methods [#permalink]
02 Dec 2010, 23:27
I felt 'while' and 'same time' to be redundant.... So eliminated ABC.... Any thoughts?
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Re: SC : Industrialization and modern methods [#permalink]
06 Dec 2010, 11:13
vigneshpandi wrote: I felt 'while' and 'same time' to be redundant....
So eliminated ABC....
Any thoughts? see adalfu's explanation above.
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Re: SC : Industrialization and modern methods [#permalink]
07 Dec 2010, 08:54
ugimba wrote: Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.
A. while at the same time they have introduced some 100,000 dangerous chemical pollutants, having
B. while at the same time introducing some 100,000 dangerous chemical pollutants that have
C. while they have introduced some 100,000 dangerous chemical pollutants at the same time, which have
D. but introducing some 100,000 dangerous chemical pollutants at the same time that have
E. but at the same time introducing some 100,000 dangerous chemical pollutants, having
please explain your reasoning.. " while at the same time they have introduced" in A they has no clear referent plus ...having... is not a good construction. B is the ans. The elimination of the rest of the choices has already been explained 
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Re: SC : Industrialization and modern methods [#permalink]
08 Feb 2011, 05:51
although b seems to be the best choice i feel it is not parallel "improved and introcucing" .....had it been while at the same time they have introduced some 100,000 dangerous chemical pollutants that have..would have been better
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Re: SC : Industrialization and modern methods [#permalink]
08 Feb 2011, 08:11
B seems to be the best Posted from my mobile device 
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Re: SC : Industrialization and modern methods [#permalink]
09 Feb 2011, 04:51
B for me. Even though B is not perfect, it is better than other options.
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Re: SC : Industrialization and modern methods [#permalink]
09 Feb 2011, 05:34
Clear 2-3 split -- but vs while.. while should be correct..
having is also incorrect,, between B&C, B wins..
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Re: Industrialization and modern methods of insect control have [#permalink]
23 Mar 2012, 19:40
can someone explain why choice b is correct in terms of verb tenses? have improved vs. introducing?
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Re: Industrialization and modern methods of insect control have
[#permalink]
23 Mar 2012, 19:40
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