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# The peaks of a mountain range, acting like rocks in a

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The peaks of a mountain range, acting like rocks in a [#permalink]

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03 Nov 2005, 00:41
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The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as "standing waves."

(A) crests and troughs that remain stationary although the air that forms them is moving rapidly, are
(B) crests and troughs that remain stationary despite the rapidly moving air that forms them, is
(C) crests and troughs that remain stationary although the air that forms them is moving rapidly, is
(D) stationary crests and troughs although the air that forms them is moving rapidly, are
(E) stationary crests and troughs although they are formed by rapidly moving air, is
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03 Nov 2005, 00:54
B for two reasons:

1) it should be "is" not "are" (the resulting flow pattern)
2) "Despite" is better than "although"
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03 Nov 2005, 01:53
Why is despite better than although?
Can you pl. explain in more detail.

It's a tough call between A and B?

I vote for A??? Not sure if this is correct.
What is the OA/OE?
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03 Nov 2005, 03:45
the resultung flow pattern... singular must agree with the verb.

This eliminates A and D

C is wordy and awkward and E uses the weak passive..

B remains
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03 Nov 2005, 03:48
GMATT73 wrote:
The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as "standing waves."

(A) crests and troughs that remain stationary although the air that forms them is moving rapidly, are
(B) crests and troughs that remain stationary despite the rapidly moving air that forms them, is
(C) crests and troughs that remain stationary although the air that forms them is moving rapidly, is
(D) stationary crests and troughs although the air that forms them is moving rapidly, are
(E) stationary crests and troughs although they are formed by rapidly moving air, is

we need "is " coz " flow pattern" is singular. Cross A and D.
B and E somehow distorts the meaning coz we know, from physics, that stationary waves are caused by moving liquid/air, not necessarily rapidly moving liquid/air.
I go for C.
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03 Nov 2005, 12:48
vc019 wrote:
Why is despite better than although?
Can you pl. explain in more detail.

It's a tough call between A and B?

I vote for A??? Not sure if this is correct.
What is the OA/OE?

In this case to me despite makes more sense because "air that forms them is moving rapidly" but they are still stationary.

So DESPITE the fast that it's moving rapidly ....
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03 Nov 2005, 14:39
I will go with C.
There is nothing wrong with C. uses the perfect modifier and S/v agreement.
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03 Nov 2005, 21:18
Nice diagramming Laxie and Nakib!

OA is C.

OE:

Spot the Error:
Spot #1: Look for descriptive phrases set off by commas in the middle of the sentence.
Spot#2: The presence of underlined verbs indicate that verbs are being tested
Here, the modifying phrase that begins with with・and the underlined verb are・should draw your attention.

Rule and Fix:
Verbs must agree with their subject and must be in the proper tense. Here, the verb are・is separated from its subject the resulting flow pattern.・ Since the non-underlined portion is singular the verb must be singular to agree with it.

POE:
Since A and D use "are" they should be eliminated.

Chunk and Compare:
Compare B to C. B correctly changes the verb to the singular is・ However it also contains the conjunction despite・ despite・changes the meaning of the sentence and is also idiomatically incorrect. C correctly uses the idiomatically correct although・and uses the correct singular verb. Eliminate B.

Compare C to E. E uses the passive voice. When given a choice, choose the active voice over the passive voice. Eliminate E.

Choose C
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03 Nov 2005, 22:46
"The resulting flow pattern" is a singular noun and therefore needs a singular verb. Eliminate A and D. Eliminate E becuase it changes the meaing of the stimulus.

Between B and C, I will pick C.
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03 Nov 2005, 22:48
BTW, "despite" is NOT a conjunction. It is a preposition.
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04 Nov 2005, 01:57
GMATT73 wrote:
Compare B to C. B correctly changes the verb to the singular is・ However it also contains the conjunction despite・ despite・changes the meaning of the sentence and is also idiomatically incorrect. C correctly uses the idiomatically correct although・and uses the correct singular verb. Eliminate B.

Can you explain what would be the correct idiom here ? "despite of the rapidly moving air"??
I would have chosen B, but it was a tough call between B and C
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05 Nov 2005, 02:55
The first split I see is are vs. is. Since "flow pattern" is singular, the correct answer will have "is" in it. That eliminates A & D.

Out of the three remaining choices, "despite" rather than "although" is most appropriate. <b>B</b> is my answer.
05 Nov 2005, 02:55
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