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The peaks of a mountain range, acting like rocks in a [#permalink]
 24 Oct 2012, 18:12
Question Stats:
55% (02:02) correct
44% (00:59) wrong based on 63 sessions
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 although they are formed by rapidly moving air, are (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 I do not know is this sentence is a 700 level or less but is tricky. I'm going through the OG 12 before attack the new one
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Re: The peaks of a mountain range, acting like rocks in a strea [#permalink]
24 Oct 2012, 19:48
carcass 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 although they are formed by rapidly moving air, are (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 I do not know is this sentence is a 700 level or less but is tricky. I'm going through the OG 12 before attack the new one This is actually pretty straight forward. The verb after the comma is basically linked to subject 'pattern' and not crest and troughs. Once we've identified this, we know that it would be singular is not plural are. A,B D are eliminiated. Between C and E - E is wordy and passive voice. C is clear winner.
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Re: The peaks of a mountain range, acting like rocks in a strea [#permalink]
24 Oct 2012, 23:42
"The resulting flow pattern" is singular and hence A,B and D can be eliminated. Between C and E, will go with C for concision. Kudos Please... If my post helped.
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Re: The peaks of a mountain range, acting like rocks in a strea [#permalink]
25 Oct 2012, 02:43
Vips0000 wrote: carcass 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 although they are formed by rapidly moving air, are (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 I do not know is this sentence is a 700 level or less but is tricky. I'm going through the OG 12 before attack the new one This is actually pretty straight forward. The verb after the comma is basically linked to subject 'pattern' and not crest and troughs. Once we've identified this, we know that it would be singular is not plural are. A,B D are eliminiated. Between C and E - E is wordy and passive voice. C is clear winner. I picked the correct answer too, I wanted to know the level of the question  One thing Vips: if I pick about 80 % of OG and OG review math both PS and DS and considering that verbal is more important than quant ( I 'm not aiming the oerfect score but 680 up......) do you think in your opinion that I'm in a good situation for the exam ?? Or is better to practice for instance Bunuel' questions take a cat and then reflect on this ??? I mean OG is for those that are inside the bell curve or with the 80% for sure a student will do well during the test day ??? Thanks and sorry for a little digression
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Re: The peaks of a mountain range, acting like rocks in a strea [#permalink]
25 Oct 2012, 03:00
carcass 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 although they are formed by rapidly moving air, are (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 I do not know is this sentence is a 700 level or less but is tricky. I'm going through the OG 12 before attack the new one The correct answer is C The singular subject "the resulting flow pattern" requires singular verb is and not are hence A, B & D are eliminated. E although changes "crests and troughs that remain stationary" to adjective "stationary crests and troughs" but changes the sentence from active to passive. Hope this helps. Kudos me if you like my post
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Re: The peaks of a mountain range, acting like rocks in a strea [#permalink]
02 Nov 2012, 05:11
2
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I will try to break the tie between C and E. Although rule : The pronoun after although does not refers to the nearest noun, but to the first noun in the sentence.The sentence with option E is: the resulting flow pattern, with stationary crests and troughs although they are formed by rapidly moving air, is known as “standing waves.” According to the above rule, they refers to resulting flow pattern and not to stationary crests and troughs. Hence, C wins.
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Re: The peaks of a mountain range, acting like rocks in a strea [#permalink]
02 Nov 2012, 05:58
carcass 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 although they are formed by rapidly moving air, are (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 I do not know is this sentence is a 700 level or less but is tricky. I'm going through the OG 12 before attack the new one The subject is "The resulting flow pattern", which is singular. So, A, B and D are out. GMAT hate passive format. So the correct answer is C.
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Re: The peaks of a mountain range, acting like rocks in a [#permalink]
07 Nov 2012, 04:42
The resulting flow patern - Singular - use of "is" is the right choice.
Choice C is the right answer
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Re: The peaks of a mountain range, acting like rocks in a [#permalink]
10 Nov 2012, 05:05
I want to follow this post.
Normally, we need to understand the meaning of the SC problem to get it right.
however, in some questions, new words appear and make us, non native, unable to understand the meaning. in this case, gmat tests the purely mechanical grammartical errors. In other words, gmat tests our ability to realize sentence structures.
we do not need to understand the meaning when we read the original choice as usually. just read other choices and find mechanical grammatical errors.
I realize this problem. but in the test room, application of this strategy is hard because we are not ourself in the test room.
pls, comment.
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Re: The peaks of a mountain range, acting like rocks in a
[#permalink]
10 Nov 2012, 05:05
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