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# Providing initial evidence that airports are a larger source

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Providing initial evidence that airports are a larger source [#permalink]

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04 Nov 2010, 10:26
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54% (03:09) correct 46% (00:44) wrong based on 664 sessions

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Providing initial evidence that airports are a larger source of pollution than they were once believed to be,environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O'hare International Airport is twice as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.

A.as that which is being emitted annually by all
B.as much annually as is emitted by the
C.as much compared to what is annually emitted y all
D.that emitted annually by all
E.that emitted annually compared to the
[Reveal] Spoiler: OA
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04 Nov 2010, 11:28
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A. as that which is being emitted annually by all – that which is redundant and being emitted is inelegant.
B. as much annually as is emitted by the – annually can not be separated from emitted; as much annually as is emitted is wrong word order.
C .as much compared to what is annually emitted by all – wrong idiom; a comparison stared with -as- should be completed with- as [/b]-
D. than emitted annually by all – perfect parallelism and crisp language ; amount of pollutant [b]emitted annually by vehicles at O’Hare International Airport is matched by that emitted annually by all motor vehicles – This is the tight choice

E. that emitted annually compared to the – wrong; comparing emission with motor vehicles.
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04 Nov 2010, 17:18
D.

A, B and C fail to use 'as much as' correctly with proper comparisons.

E compares that emitted to the vehicles.
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Re: Providing initial evidence that airports are a larger source [#permalink]

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16 Mar 2013, 09:57
Is "twice" the parallel marker/tag?
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Re: Providing initial evidence that airports are a larger source [#permalink]

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19 May 2014, 15:03
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Re: Providing initial evidence that airports are a larger source [#permalink]

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24 Sep 2014, 09:07
What is the problem with A?
It has the right idiom, and as far as I can tell it's just a little wordy.
Is that it?
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Re: Providing initial evidence that airports are a larger source [#permalink]

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24 Sep 2014, 10:17
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ronr34 wrote:
What is the problem with A?
It has the right idiom, and as far as I can tell it's just a little wordy.
Is that it?

Hello ron34

A is wrong because

1. Parallel:
The syntax is: X is twice Y <= X and Y must be parallel, if X is noun phrase, Y should be noun phrase too. Let see what X is. X = total amount of pollutant emitted annually by vehicles. This is noun phrase. But Y = that which is being emitted....... This is a clause (has both subject and verb). The parallel structure is not maintained.

2. Grammar:
"that which" is considered unidiomatic in GMAT.

Hope it helps.
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Re: Providing initial evidence that airports are a larger source [#permalink]

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22 Apr 2015, 12:25
ronr34 wrote:
What is the problem with A?
It has the right idiom, and as far as I can tell it's just a little wordy.
Is that it?

Providing initial evidence that airports are a larger source of pollution than they were once believed to be,environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O'hare International Airport is twice as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.

A.as that which is being emitted annually by all

A is wrong because of parallelism issues. 'pollutant emitted' is not parallel to 'being emitted'. Secondly, usage of 'that which' is incorrect and awkward.
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Re: Providing initial evidence that airports are a larger source [#permalink]

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23 May 2016, 09:10
student26 wrote:
Providing initial evidence that airports are a larger source of pollution than they were once believed to be,environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O'hare International Airport is twice as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.

A.as that which is being emitted annually by all
B.as much annually as is emitted by the
C.as much compared to what is annually emitted y all
D.that emitted annually by all
E.that emitted annually compared to the

The comparison is between amount of pollutant emitted annually by vehicles at airport and amount of pollutant emitted by all motor vehicles in metro area.

A.as that which is being emitted annually by all that and which are redundant
B.as much annually as is emitted by the 'annually' should be after 'emitted'
C.as much compared to what is annually emitted y all compared to what is not the right idiom
D.that emitted annually by all correct choice as it compares 'amount' of both elements
E.that emitted annually compared to the 'compared to the motor vehicle' is wrong comparison
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Re: Providing initial evidence that airports are a larger source [#permalink]

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23 May 2016, 10:12
student26 wrote:
Providing initial evidence that airports are a larger source of pollution than they were once believed to be,environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O'hare International Airport is twice as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.

A.as that which is being emitted annually by all
B.as much annually as is emitted by the
C.as much compared to what is annually emitted y all
D.that emitted annually by all
E.that emitted annually compared to the

it takes me a long time to find how b is wrong.

b is a comparison so we apply the parallel rule here. comparison must be in paralel form.

there is no " is emitted" in preceding clause. so we can not use "is emitted" at the second part of comparison. application of paralelism to comparison is simple but help us to see. meaningly, "is " dose not go with "emitted" but go with subject of the second part of comparison

we should use "that emitted....... IS " because the first part we have "amount ... emitted".

takeaway
focus on what are compared and apply paralelism to the writing.

too hard
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Re: Providing initial evidence that airports are a larger source [#permalink]

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23 May 2016, 10:20
"is " in the first part of comparison belongs to amount . "is" in the second part belongs to "emitted" . not parallel logically
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Providing initial evidence that airports are a larger source [#permalink]

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12 Jul 2016, 23:56
GMAT adds unnecessary words in sentences to confuse test takers and waste their time.
The sentence in this question can be reduced to a clean, crisp one line by removing all the crap. See for your self.

Providing initial evidence that airports are a larger source of pollution than they were once believed to be,environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O'hare International Airport "X" is twice as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area. "Y"

Now you can easily come to the correct choice D
The total amount of pollutant emitted annually by vehicles at X is twice that emitted annually by vehicles in Y.

student26 wrote:
Providing initial evidence that airports are a larger source of pollution than they were once believed to be,environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O'hare International Airport is twice as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.

A.as that which is being emitted annually by all
B.as much annually as is emitted by the
C.as much compared to what is annually emitted y all
D.that emitted annually by all
E.that emitted annually compared to the

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Providing initial evidence that airports are a larger source [#permalink]

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15 Sep 2016, 07:24
Clarity and concision.

A: incorrect: "which is being" - incorrect. "being" is almost always incorrect

B: incorrect: the placement of "annually" no longer describes "emitted"

C: incorrect: not concise and unidiomatic: "twice as much compared to" should be "twice as much as" or simply "twice."

D: correct. "amount X is twice amount Y" is better than "amount X is twice as much as amount Y"

E: incorrect: "compared to" is credundant
Providing initial evidence that airports are a larger source   [#permalink] 15 Sep 2016, 07:24
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