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# The yield of natural gas from Norway's Troil gas field is

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The yield of natural gas from Norway's Troil gas field is [#permalink]

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02 Oct 2005, 18:53
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The yield of natural gas from Norway's Troil gas field is expected to increase annually until the year 2005 and then to stabillize at six billion cubic fet a day, which will allow such an extraction rate at least for 50 years' prduction.

A. 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for.

B. 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least.

C. 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing.

D. 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least.

E. 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least.

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27 Sep 2007, 19:50
bkk145 wrote:
The yield of natural gas from Norway’s Troll gas field is expected to increase
annually until the year 2005 and then to stabilize at six billion cubic feet a day , which will allow such an extraction rate at least for 50 years’ production.

A. 2005 and then to stabilize at six billion cubic feet a day, which
will allow such an extraction rate at least for
B. 2005 and then to stabilize at six billion cubic feet a day, an
extraction rate that will allow at least
C. 2005 and then stabilizing at six billion cubic feet a day, with
such an extraction rate at the least allowing
D. 2005, then stabilizing at six billion cubic feet a day, allowing
such an extraction rate for at least -- participle allowing modifies the whole clause.
E. 2005, then stabilizing at six billion cubic feet a day, which will
allow such an extraction rate for at least

I picked D, which seems incorrect after reading other post.

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03 Jul 2009, 10:05
Can someone please explain when we should use noun modifiers with relative pronouns, when to use prepositional modifier, when to use absolute phrase modifier and when to use gerund modifier?

For example:

The yield of natural gas from Norway’s Troll gas field is expected to increase
annually until the year 2005 and then to stabilize at six billion cubic feet a day , which will allow such an extraction rate at least for 50 years’ production.

A. 2005 and then to stabilize at six billion cubic feet a day, which
will allow such an extraction rate at least for
B. 2005 and then to stabilize at six billion cubic feet a day, an
extraction rate that will allow at least
C. 2005 and then stabilizing at six billion cubic feet a day, with
such an extraction rate at the least allowing
D. 2005, then stabilizing at six billion cubic feet a day, allowing
such an extraction rate for at least
E. 2005, then stabilizing at six billion cubic feet a day, which will
allow such an extraction rate for at least

Despite other errors in the above choices, when should we use "which...", "with...", gerund ("allowing...") and absolute phrase ("an extraction...")?

Thanks!!

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The yield of natural gas from Norways Troll gas field is [#permalink]

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14 Aug 2009, 16:17
The yield of natural gas from Norway’s Troll gas field is expected to increase
annually until the year 2005 and then to stabilize at six billion cubic feet a day , which
will allow such an extraction rate at least for
50 years’ production
A. 2005 and then to stabilize at six billion cubic feet a day, which
will allow such an extraction rate at least for
B. 2005 and then to stabilize at six billion cubic feet a day, an
extraction rate that will allow at least
C. 2005 and then stabilizing at six billion cubic feet a day, with
such an extraction rate at the least allowing
D. 2005, then stabilizing at six billion cubic feet a day, allowing
such an extraction rate for at least
E. 2005, then stabilizing at six billion cubic feet a day, which will
allow such an extraction rate for at least
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14 Aug 2009, 16:43
prude_sb wrote:
The yield of natural gas from Norway’s Troll gas field is expected to increase
annually until the year 2005 and then to stabilize at six billion cubic feet a day , which
will allow such an extraction rate at least for
50 years’ production
A. 2005 and then to stabilize at six billion cubic feet a day, which
will allow such an extraction rate at least for
B. 2005 and then to stabilize at six billion cubic feet a day, an
extraction rate that will allow at least
C. 2005 and then stabilizing at six billion cubic feet a day, with
such an extraction rate at the least allowing
D. 2005, then stabilizing at six billion cubic feet a day, allowing
such an extraction rate for at least
E. 2005, then stabilizing at six billion cubic feet a day, which will
allow such an extraction rate for at least

I pick B.. I think the modifier correctly modifies the rate (six billion cubic feet a day)

C and D sound not right ...

IMO B.

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Query for one of OG 12 question [#permalink]

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23 Oct 2009, 22:40
Hi,
I was going through this OG12 question and was just wondering what if one of the option has "and then stabilize" instead of current options?... will this change meaning or parallelism?

63. The yield of natural gas from Norway’s Troll gas fi eld is
expected to increase annually until the year 2005 and
then to stabilize at six billion cubic feet a day, which
will allow such an extraction rate at least for 50 years’
production.
(A) 2005 and then to stabilize at six billion cubic
feet a day, which will allow such an extraction
rate at least for
(B) 2005 and then to stabilize at six billion cubic
feet a day, an extraction rate that will allow at
least
(C) 2005 and then stabilizing at six billion cubic feet
a day, with such an extraction rate at the least
allowing
(D) 2005, then stabilizing at six billion cubic feet a
day, allowing such an extraction rate for at least
(E) 2005, then stabilizing at six billion cubic feet a
day, which will allow such an extraction rate for
at least

1>Expected to "establish and then stabilize" should be preferable OR 2>Expected to "establish and then to stabilize" ?

I would have gone for 1 definitely, but use of word 'then' caused a hell lot of confusion.
How does this differ?

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Re: Query for one of OG 12 question [#permalink]

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24 Oct 2009, 00:04
loveusanky wrote:
Just wondering what if one of the option has "and then stabilize" instead of current options?... will this change meaning or parallelism?

63. The yield of natural gas from Norway’s Troll gas field is expected to increase annually until the year 2005 and
then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years’ production.

(A) 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for
(B) 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least
(C) 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing
(D) 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least
(E) 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least

1> Expected to "establish and then stabilize" should be preferable OR 2> Expected to "establish and then to stabilize" ?

I would have gone for 1 definitely, but use of word 'then' caused a hell lot of confusion. How does this differ?

Your question is partial and is not the main issue in the question above. The main issue is - modifying phrase. If you do not have a correct modifying phrase, it is irrelavant to talk about 2 options that which one is better.

(A) "which" is incorrect.
(B) "an extraction rate that will allow at least"... is correct.
(C) "with such an extraction rate ........" is incorrect.
(D) "allowing such an extraction rate for at least" change in meaning...
(E) Similar to A - "which ....."?
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Re: Query for one of OG 12 question [#permalink]

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24 Oct 2009, 00:11
GMAT TIGER wrote:
loveusanky wrote:
Just wondering what if one of the option has "and then stabilize" instead of current options?... will this change meaning or parallelism?

63. The yield of natural gas from Norway’s Troll gas field is expected to increase annually until the year 2005 and
then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years’ production.

(A) 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for
(B) 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least
(C) 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing
(D) 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least
(E) 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least

1> Expected to "establish and then stabilize" should be preferable OR 2> Expected to "establish and then to stabilize" ?

I would have gone for 1 definitely, but use of word 'then' caused a hell lot of confusion. How does this differ?

Your question is partial and is not the main issue in the question above. The main issue is - modifying phrase. If you do not have a correct modifying phrase, it is irrelavant to talk about 2 options that which one is better.

(A) "which" is incorrect.
(B) "an extraction rate that will allow at least"... is correct.
(C) "with such an extraction rate ........" is incorrect.
(D) "allowing such an extraction rate for at least" change in meaning...
(E) Similar to A - "which ....."?

Well, OG explanation says it dealing with parallelism, my question is if stabilize is present in any of the option and has no other errors, then would it be preferable to select that option

In short how the use of "then" changes the meaning?

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Re: Query for one of OG 12 question [#permalink]

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24 Oct 2009, 08:44
Well - One approach of dealing the question like this is finding/elimination the incorrect choices. If you want to choices in terms of parallism, C, D and E are out for being unparallel. Between A and B, A has incorrect modifying phrase.

- Another approach is finding/eliminatiing the incorrect modifying phrase. Using that, A, C and E are out. Between B and D, D has unparalled construction. So B remains..

loveusanky wrote:
GMAT TIGER wrote:
loveusanky wrote:
Just wondering what if one of the option has "and then stabilize" instead of current options?... will this change meaning or parallelism?

63. The yield of natural gas from Norway’s Troll gas field is expected to increase annually until the year 2005 and
then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years’ production.

(A) 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for
(B) 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least
(C) 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing
(D) 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least
(E) 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least

1> Expected to "establish and then stabilize" should be preferable OR 2> Expected to "establish and then to stabilize" ?

I would have gone for 1 definitely, but use of word 'then' caused a hell lot of confusion. How does this differ?

Your question is partial and is not the main issue in the question above. The main issue is - modifying phrase. If you do not have a correct modifying phrase, it is irrelavant to talk about 2 options that which one is better.

(A) "which" is incorrect.
(B) "an extraction rate that will allow at least"... is correct.
(C) "with such an extraction rate ........" is incorrect.
(D) "allowing such an extraction rate for at least" change in meaning...
(E) Similar to A - "which ....."?

Well, OG explanation says it dealing with parallelism, my question is if stabilize is present in any of the option and has no other errors, then would it be preferable to select that option

In short how the use of "then" changes the meaning?

For your question: From where you got "establish and then stabilize"? I do not see any establish in the question.

Are you talking about expected to "increase and then to stabilize"? If so, then

i. "increase and then stabilize": The yield of natural gas from Norway’s Troll gas field is expected to increase annually until the year 2005 and then stabilize at six billion cubic feet a day, an extraction rate that will allow at least 50 years’ production.

- This sentence is not parallel. The structure of this sentence looks like as under:
The yield of natural gas .... is expected to increase .... and to then stabilize .....

ii. "increase and then to stabilize": The yield of natural gas from Norway’s Troll gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least 50 years’ production.

- This sentence is parallel. The structure of this sentence is as under:
The yield of natural gas .... is expected to increase .... and then to stabilize .....

Hope that makes clear..
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The yield of natural gas from Norway's Troll gas field is [#permalink]

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30 Jan 2012, 12:21
The yield of natural gas from Norway's Troll gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years' production

a) 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for

b) 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least

C) 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing

d) 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least

e) 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least

Why is the Answer Not "D"?

Most Importantly what is an Appositive and an Appostive Phrase??

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Re: Natural Gas: Whats an Apostive and Appostive Phrase? [#permalink]

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31 Jan 2012, 19:59
+1 B

"to increase" must be parallel with "to stabilize". D out.
In A, "which" modifies "day". So, A it is wrong,

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Re: Natural Gas: Whats an Apostive and Appostive Phrase? [#permalink]

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10 Mar 2012, 10:00
The answer I picked was B:

A. Although parallelism is maintained, the use of the relative pronoun "which" is redundant because "an extraction rate" refers to the same thing. Also, the "which clause" seemed very wordy.

B. Parallelism is maintained - "to increase...and then to stabilize." Using a noun phrase to describe 6 billion cubic feet per day eliminates the redundancy.

C. Parallelism is not maintained. The sentence should be "to increase...and then to stabilize."

D. It was very unclear what the modifier "allowing" is supposed to modify. Also, parallelism is broken because the expectation is "to increase...and then to stabilize."

E. Again, the clause beginning with "which" is redundant because "which" and "an extraction rate" refer to the same thing. Also, parallelism is broken. Finally, I think the clause starting with "which" is wordy.

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Re: Natural Gas: Whats an Apostive and Appostive Phrase? [#permalink]

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23 Mar 2012, 12:58
B seems right as maintains parallelism.

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Re: Natural Gas: Whats an Apostive and Appostive Phrase? [#permalink]

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15 Apr 2012, 09:23
I think B is a clear winner coz, "an extraction rate" acts as an appropriate modifier when compared to the rest of them...

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Re: The yield of natural gas from Norway's Troll gas field is [#permalink]

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20 Oct 2012, 22:59
B and D are the main contenders.
D is incorrect in that it alters the meaning. It states that the act of stabilizing at 6 billion cf/day will allow such an extraction rate at least ...... . This is illogical.
B uses an appositive modifier and is very clear in the meaning it states.
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Re: The yield of natural gas from Norway's Troll gas field is [#permalink]

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21 Oct 2012, 22:39
B is the correct answer because it fixes the error in the original modifier clause and replaces with a well-constructed appositive.
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The yield of natural gas from Norway's Troil gas field is [#permalink]

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21 Mar 2013, 05:20
The yield of natural gas from Norway's Troil gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years' production.

A. 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for.

B. 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least.

C. 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing.

D. 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least.

E. 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least.

Need explanation of all answer choice

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Re: The yield of natural gas from Norway's Troil gas field [#permalink]

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21 Mar 2013, 05:36
mun23 wrote:
The yield of natural gas from Norway's Troil gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years' production.

A. 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for.

B. 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least.

C. 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing.

D. 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least.

E. 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least.

Need explanation of all answer choice

first is parallelism = to increase and to stabilize
second is avoid unnecessary wordings - hence use "an extraction rate"

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Re: The yield of natural gas from Norway's Troil gas field [#permalink]

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21 Mar 2013, 06:35
The yield of natural gas from Norway's Troil gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years' production.

A. 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for.
"which" refers to "day", and "a day will allow such an extraction rate" is not correct
B. 2005 and then (is expected) to stabilize at six billion cubic feet a day, an extraction rate that will allow at least.
Perfect
C. 2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing.
"stabilizing " is not parallel ( is expected to increase (...) and then stabilizing). Also "with such an extraction rate" is not the right idiom
D. 2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least.
"stabilizing " is not parallel, "allowing such an extraction rate" is not the right idiom
E. 2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least.
"which" refers to "day", same problem as A
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Re: The yield of natural gas from Norway's Troil gas field is [#permalink]

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22 Apr 2013, 21:02
All duplicate threads on this topic have been merged.

Please check and follow the Guidelines for Posting in Verbal GMAT forum before posting anything.

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Re: The yield of natural gas from Norway's Troil gas field is [#permalink]

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05 Aug 2013, 21:27
I picked D and don't understand WHY the "to increase" and "to stablize" must be parallel.

1. The Yield is expected to increase and to stablize
2. The yield is expected to increase and stablize

For me a yield can not stablize itself -- someone else should stablize it and that's why the 2nd statement above makes more sense to me. What am I missing here?

I thought these were at different levels within the sentence. For instance, the increase is at a different time period than stablize.

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Re: The yield of natural gas from Norway's Troil gas field is   [#permalink] 05 Aug 2013, 21:27

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