Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 23 May 2017, 19:42

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Industrialisation and modern methods of insect control have

Author Message
Intern
Joined: 03 Jul 2006
Posts: 9
Location: India
Followers: 0

Kudos [?]: 0 [0], given: 0

Industrialisation and modern methods of insect control have [#permalink]

### Show Tags

15 Jul 2006, 09:41
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

Industrialisation and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced 10000 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 10000 chemical pollutants ,having
b)while at the same time introducing some 10000 dangerous chemical pollutants that have
c) while they have introduced some 100000 dangerous chemical pollutants at the same time , which have
d) but introducing some 10000 dangerous chemical pollutants at the same time that have
Senior Manager
Joined: 07 Mar 2006
Posts: 352
Followers: 1

Kudos [?]: 32 [0], given: 1

### Show Tags

16 Jul 2006, 06:45
A seems to be parallel.
Have improved....have introduced.

But , i find none of the answers convincing as it seems to suggest that chemical pollutants have gone unregulated and chemical pollutants were developed some 50yrs ago.
GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5045
Location: Singapore
Followers: 31

Kudos [?]: 376 [0], given: 0

### Show Tags

17 Jul 2006, 02:18
a,c - 'they' has not clear referent

d - awkward

b is best.
SVP
Joined: 30 Mar 2006
Posts: 1730
Followers: 1

Kudos [?]: 82 [0], given: 0

### Show Tags

17 Jul 2006, 04:05
B is the best of the worst.
Can still pick out some problems with B but other options have many more problems.
Intern
Joined: 03 Jul 2006
Posts: 9
Location: India
Followers: 0

Kudos [?]: 0 [0], given: 0

### Show Tags

17 Jul 2006, 06:12
OA is B. Please explain as to why it is not A. 'they' has only one antecedent and it seems to be parallel.
Did not include answer choice E) since it was clearly out.
Manager
Joined: 05 Jun 2006
Posts: 112
Location: London
Followers: 1

Kudos [?]: 2 [0], given: 0

### Show Tags

19 Jul 2006, 07:00
B is not parallel. How can it be the correct answer (not implying the others are correct either - but B is definately not parallel)
Senior Manager
Joined: 20 Feb 2006
Posts: 331
Followers: 1

Kudos [?]: 81 [0], given: 0

### Show Tags

19 Jul 2006, 13:16
xsports wrote:
B is not parallel. How can it be the correct answer (not implying the others are correct either - but B is definately not parallel)

I also think B is wrong.. I vote for C..

Also, while and sametime go togethor ? while already means same time..
19 Jul 2006, 13:16
Similar topics Replies Last post
Similar
Topics:
If the majority of your opponents have control, you may 2 25 Sep 2010, 16:25
Many writers of modern English have acquired careless habits 9 26 Jul 2009, 03:29
Industrialization and modern methods of insect control have 6 08 Jul 2008, 10:22
Many writers of modern English have acquired careless habits 4 26 Jul 2007, 16:36
Many writers of modern English have acquired careless habits 13 06 May 2011, 01:23
Display posts from previous: Sort by