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A former director of the Central Intelligence Agency

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JC
 Post subject: A former director of the Central Intelligence Agency
 Post Posted: Tue Aug 21, 2007 11:19 pm 
A former director of the Central Intelligence Agency has said that the surveillance capabilities of United States satellites would enable a skilled photographic interpreter to distinguish between Guernsey and Hereford cows grazing in a meadow.

A) between Guernsey and Hereford cows grazing
B) between Guernseys and Hereford cows that graze
C) among Guernseys and Hereford cows that are grazing
D) among Guernsey and Hereford cows as they graze
E) Guernseys from Hereford cows grazing

I narrowed it down to A & E since C & D are obviously wrong.

Can someone please tell me why E is not the right answer? I thought there is an idiom for "distinguishes X from Y"

Thanks!
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Guest
 Post subject:
 Post Posted: Tue Aug 21, 2007 11:47 pm 
Is the answer B?
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ratheen22
 Post subject:
 Post Posted: Wed Aug 22, 2007 1:41 am 
I think answer is A
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HJ
 Post subject:
 Post Posted: Wed Aug 22, 2007 6:44 pm 
I think the answer is E

My explanation:
Distinguish X from Y --> in this case : distingush Guernseys from Hereford cows

What's the correct answer?
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givemeanid
 Post subject:
 Post Posted: Wed Aug 22, 2007 7:53 pm 
HJ wrote:
I think the answer is E

My explanation:
Distinguish X from Y --> in this case : distingush Guernseys from Hereford cows

What's the correct answer?


distinguish X from Y
distinguish between X and Y

Both are correct idioms.
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JC
 Post subject:
 Post Posted: Thu Aug 23, 2007 1:13 am 
givemeanid wrote:
HJ wrote:
I think the answer is E

My explanation:
Distinguish X from Y --> in this case : distingush Guernseys from Hereford cows

What's the correct answer?


distinguish X from Y
distinguish between X and Y

Both are correct idioms.


Answer is A.
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StaceyKoprince
 Post subject:
 Post Posted: Thu Sep 20, 2007 11:44 pm 
Offline
ManhattanGMAT Staff


Posts: 6077
Location: San Francisco
I assume the original underline includes "between"?

Givemeanid is right - you can "distinguish X from Y" or "distinguish between X and Y." Remember that X and Y must be parallel. Only A and D correctly name the breed alone (Guernsey). The others say "GuernseyS" which means "Guernsey cows" - but it already says "Guernsey and Hereford cows" so we don't want to repeat that.

And then D uses "among" for two things; among is used for 3 or more things.

Also, just generally, this test seems to prefer "distinguish between X and Y." But do check the rest of each answer choice to make sure the other parts are all correct!

_________________
Stacey Koprince
Instructor
Director of Online Community
ManhattanGMAT
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