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# The number of mountain gorillas is declining with such

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Senior Manager
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The number of mountain gorillas is declining with such [#permalink]

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29 Mar 2012, 02:13
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Difficulty:

5% (low)

Question Stats:

83% (01:29) correct 17% (00:48) wrong based on 40 sessions

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The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980.

(A) with such rapidity that the population is one-half
(B) with such rapidity that the population was one-half
(C) so rapidly the population divided in half
(D) so rapidly that the population was halved
(E) in such rapidity that the population is halved

Are "with such rapidity" and " in such rapidity" possible idioms? or they don't make sense at all?
[Reveal] Spoiler: OA
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Senior Manager
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Re: PT #15 SC 23 [#permalink]

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29 Mar 2012, 03:11
eybrj2 wrote:
The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980.

(A) with such rapidity that the population is one-half
(B) with such rapidity that the population was one-half
(C) so rapidly the population divided in half
(D) so rapidly that the population was halved
(E) in such rapidity that the population is halved

Are "with such rapidity" and " in such rapidity" possible idioms? or they don't make sense at all?

i think they dont make sense.
In this context of sentence we need adverb "so" to modify "is declining". here we have two adverbs in a row so rapidly
So we are left with C & D
C changes the meaning

so D
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Re: PT #15 SC 23 [#permalink]

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30 Mar 2012, 03:32
The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980.

(A) with such rapidity that the population is one-half
(B) with such rapidity that the population was one-half
--> "with " changes the meaning to absurdity by saying the act of declining includes "such rapidity"

(C) so rapidly the population divided in half
--> we need 'that' here to introduce the subordinate clause

(D) so rapidly that the population was halved
--> correct

(E) in such rapidity that the population is halved
--> need past tense here because the act of getting half occurred in past.

hence D

HTH
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Re: PT #15 SC 23 [#permalink]

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30 Mar 2012, 06:25
IMO D. Agree with above user's explanation.
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Re: PT #15 SC 23   [#permalink] 30 Mar 2012, 06:25
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# The number of mountain gorillas is declining with such

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