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# Industrialization and modern methods of insect control have

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Intern
Joined: 07 Jul 2008
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Industrialization and modern methods of insect control have [#permalink]

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07 Jul 2008, 16:43
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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

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Intern
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07 Jul 2008, 17:08
Why can't we use "But" here? I thought the usage of but would indicate a contrast between the good and bad effects...

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Senior Manager
Joined: 25 Nov 2006
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08 Jul 2008, 08:17
rao_1857 wrote:
fwl200 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
modifier confusion they refering to "Industrialization and modern methods of insect control " or "insect control" it self

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
modifier confusion
d. but introducing some 100,000 dangerous chemical pollutants at the same time that have
shouldn't use But
e. but at the same time introducing some 100,000 dangerous chemical pollutants, having
shouldn't use But

By PoE ... I think the correct answer is B

This is a wrong assumption. Using 'But' is not wrong. The issue lies elsewhere

I guess by now you would have narrowed it down to between b and e.
If not let me explain

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

In e having seems to modify chemical pollutants. This is wrong. It is not the just the chemical pollutants that have gone virtually unregulated but rather 'introducing some 100,000 dangerous chemical pollutants'. This is what makes e wrong.

Hope it helped!!

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Manager
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08 Jul 2008, 08:37
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

Why should c not be right: I think they cannot refer to anything else other than Industri...and..... also "introduced" seems to be parallel!!!

Is there some other problem with C - redundancey could be one "have"..but I cant rule that out based on this???

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Senior Manager
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08 Jul 2008, 08:57
iamcartic wrote:
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

Why should c not be right: I think they cannot refer to anything else other than Industri...and..... also "introduced" seems to be parallel!!!

Is there some other problem with C - redundancey could be one "have"..but I cant rule that out based on this???

I also thought C is the best. But here we need participle due to the at the same time but C uses have introduced..which makes C wrong.

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SVP
Joined: 07 Nov 2007
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Location: New York

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08 Jul 2008, 09:46
fwl200 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, havingb. 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

C is wrong because "which" incorrectly modifies "time"

B is the best
_________________

Smiling wins more friends than frowning

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VP
Joined: 03 Apr 2007
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08 Jul 2008, 10:22
fwl200 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

The SC means :
1. Industrialization and modern methods of insect control have improved the standard of living around the globe
2. Industrialization and modern methods of insect control have introduced chemical pollutants because
3. Chemical pollutants were introduced because Industrialization and modern methods of insect were not regulated

A,E - modifier issue : "having " modifies "pollutants" incorrectly
C - "which " modifies "time"
D - "that" modifies " pollutants" incorrectly
B wins

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Re: SC question   [#permalink] 08 Jul 2008, 10:22
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