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Test2-91. (29317-!-item-!-188;#058&004234) The

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Test2-91. (29317-!-item-!-188;#058&004234) The [#permalink] New post 28 Sep 2007, 05:53
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Test2-91. (29317-!-item-!-188;#058&004234)

The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force a rethinking of the role of comets in the delivery of organic compounds to the evolving Earth.

(A) The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force
(B) The spectacular disintegration of a comet last year in full view of ground- as well as space-based telescopes, provided new insights into how comets form and thus possibly forcing
(C) When a comet's spectacular disintegration occurred in full view of ground- and space-based telescopes last year, it provided new insights into how comets form and thus may possibly force
(D) Last year, in full view of ground- and space-based telescopes, a comet's spectacular disintegration provided new insights into how comets form and thus possibly forcing
(E) Last year, in full view of ground- as well as space-based telescopes, the spectacular disintegration of a comet has provided new insights into how comets form and may thus force
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 [#permalink] New post 28 Sep 2007, 06:27
We have to determine what the subject is in this question: what might force a rethinking, since it cannot be Last Year, in full view, it eliminates D and E, leaving us A,B and C.
now B and C can be eliminated since thus possibly and thus may possibly forcing sounds wrong, the word 'possibly' sounds plain wrong, when used with 'may' or 'thus'.

That leaves us only with choice A.
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Re: SC-Prep-T2-Q91 [#permalink] New post 28 Sep 2007, 10:06
kaijen wrote:
Test2-91. (29317-!-item-!-188;#058&004234)

The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force a rethinking of the role of comets in the delivery of organic compounds to the evolving Earth.

(A) The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force
(B) The spectacular disintegration of a comet last year in full view of ground- as well as space-based telescopes, provided new insights into how comets form and thus possibly forcing
(C) When a comet's spectacular disintegration occurred in full view of ground- and space-based telescopes last year, it provided new insights into how comets form and thus may possibly force
(D) Last year, in full view of ground- and space-based telescopes, a comet's spectacular disintegration provided new insights into how comets form and thus possibly forcing
(E) Last year, in full view of ground- as well as space-based telescopes, the spectacular disintegration of a comet has provided new insights into how comets form and may thus force

nothing wrong with A here.

B: as well as is wordier than "and" and is not needed here. and thus possibly forcing is awkward and could be better said as: and may thus force.
C: "it" has no clear referent.
D: thus possibly forcing is incorrect.
E: again as well as is wordier than and

Also I think some of the meaning is lost when you change around the sentence as done in D and E.
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Re: SC-Prep-T2-Q91 [#permalink] New post 17 Aug 2010, 08:09
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(A) The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force
(B) The spectacular disintegration of a comet last year in full view of ground- as well as space-based telescopes, provided new insights into how comets form and thus possibly forcing
(C) When a comet's spectacular disintegration occurred in full view of ground- and space-based telescopes last year, it provided new insights into how comets form and thus may possibly force
(D) Last year, in full view of ground- and space-based telescopes, a comet's spectacular disintegration provided new insights into how comets form and thus possibly forcing
(E) Last year, in full view of ground- as well as space-based telescopes, the spectacular disintegration of a comet has provided new insights into how comets form and may thus force
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Re: SC-Prep-T2-Q91 [#permalink] New post 17 Aug 2010, 09:14
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A.
That was tricky.
@kaijen: I think that E changes the meaning of the sentence. You could understand that the disintigration of the comet provided insights in the last year. This does not mean that the disintigration took place the last year.

Don't forget to check not only the grammar but also the meaning and sense of the sentence.

I think I deserve kudos ;)
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Re: [#permalink] New post 18 Aug 2010, 13:13
Present perfect is incorrect, there is an indication of time in this sentence - Last year.
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Re: SC-Prep-T2-Q91 [#permalink] New post 22 Aug 2010, 12:08
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Choices A and B are almost identical--take out some modifiers to see the underlying structure:

(A) [strike]The[/strike] [strike]spectacular[/strike] disintegration [strike]of a comet last year in full view of ground- and space-based telescopes[/strike] provided new insights [strike]into how comets form[/strike] and may thus force

(B) [strike]The spectacular[/strike] disintegration[strike]of a comet last year in full view of ground- as well as space-based telescopes,[/strike] provided new insights [strike]into how comets form[/strike] and thus possibly forcing

Even though the verb tenses are different in choice A ("provided" versus "may thus force"), this switch in tense is JUSTIFIED by the meaning...something that happened in the past may effect the future. There is no tensed verb in choice B at all, so this answer violates parallelism. This is a great example of there being more than one way to skin a cat-- I'd venture that a lot of people would get hung up on the "and" versus "as well as" distinction, which is less common. It's my understanding (and if someone knows this for sure I'd love to hear your thoughts) that "and" is necessary to justify the hyphen usage here ("as well as" usually follows a comma and starts out a modifying phrase that does NOT change the singularity/plurality of a noun)--but if you weren't sure about that distinction it's best to go for what you DO know and not get hung up on what you don't.

(C) When [strike]a comet's spectacular[/strike] disintegration occurred [strike]in full view of ground- and space-based telescopes last year[/strike], it provided new insights[strike]into how comets form[/strike] and thus may possibly force.

The meanings of "may" and "possibly" overlap, so this phrase is redundant. Lose it.

(D) Last year, [strike]in full view of ground- and space-based telescopes,[/strike] [strike]a comet's spectacular[/strike] disintegration provided new insights [strike]into how comets form[/strike] and thus possibly forcing

Choice D has the same issue as choice B with lack of a tensed verb. Additionally, the placement of the modifier "in full view..." implies that the providing of insights was what happened in full view of the telescopes. Lose it.

(E) Last year,[strike]in full view of ground- as well as space-based telescopes,[/strike] [strike]the spectacular[/strike]disintegration [strike]of a comet[/strike] has provided new insights[strike]into how comets form[/strike] and may thus force

I agree with rlevochkin-- this is an incorrect use of the present perfect tense. When you pinpoint a specific point in time, you cannot use the present perfect.
In 1998, I have eaten the best pie ever made. INCORRECT
In 1998, I ate the best pie ever made. CORRECT
Last year, I have gone to school. INCORRECT
Last year, I went to school. CORRECT
You CAN, however say "Since [a specific point in time]" --
Since 1998, I have lived in Santa Monica. CORRECT


That only leaves A!
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Re: SC-Prep-T2-Q91 [#permalink] New post 13 Oct 2010, 12:27
parker,

thanks a lot for explanations provided.
Excellent!
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Re: SC-Prep-T2-Q91 [#permalink] New post 14 Oct 2010, 02:00
kaijen wrote:
Test2-91. (29317-!-item-!-188;#058&004234)

The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force a rethinking of the role of comets in the delivery of organic compounds to the evolving Earth.

(A) The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force
(B) The spectacular disintegration of a comet last year in full view of ground- as well as space-based telescopes, provided new insights into how comets form and thus possibly forcing
(C) When a comet's spectacular disintegration occurred in full view of ground- and space-based telescopes last year, it provided new insights into how comets form and thus may possibly force
(D) Last year, in full view of ground- and space-based telescopes, a comet's spectacular disintegration provided new insights into how comets form and thus possibly forcing
(E) Last year, in full view of ground- as well as space-based telescopes, the spectacular disintegration of a comet has provided new insights into how comets form and may thus force

A for me too. I was stuck between A and E.
I rejected E on two grounds: the use of commas which makes the second phrase a non-essestial modifier which is not the case here. The phrase " in full view of ground- as well as space-based telescopes" is essential to meaning of the sentence, so the use of commas is not justified. Secondly, the use of perfect tense is not necessary. The action has already occured and simply requires a present tense. The infromation derived from that action may be present but the action is already over. Also, you do not need a present perfect when you are talking about a specific point of time in the past that has already occured.
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Re: SC-Prep-T2-Q91 [#permalink] New post 14 Oct 2010, 02:07
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If you can remember two basic things in the given context, the answer will pop up.

1. The co-ordinate conjunction - and – joins two equal things and so if you have a clause on one side of the -and - you must necessarily have another clause on the other side. Otherwise the sentence is un-parallel. So B and D are out for using the incomplete phrase thus possibly forcing after the co-ordinate conjunction – and-

2. The disintegration occurred last year. The adverb last year must not be far removed from the disintegration.

The misplacement of the adverb -last year- after - telescopes in C and - before in full view of ground - in E, fouls this structural rule.


Then we are left only with A.

The point is that in a pressure-cooker test such as GMAT, if you can spot at least one error in a choice, then dump it and get going than pull your hair on fine prints. Any takers?
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Re: Test2-91. (29317-!-item-!-188;#058&004234) The [#permalink] New post 07 Nov 2011, 19:15
yes, it is clear A is oa.

"last year" in A modify WHAT. pls, help.

normally, adverb modify verb or adjective. These case are easy.

"last year" in A modify what, pls, help.
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Re: SC-Prep-T2-Q91 [#permalink] New post 21 Nov 2011, 07:23
metallicafan wrote:
A.
That was tricky.
@kaijen: I think that E changes the meaning of the sentence. You could understand that the disintigration of the comet provided insights in the last year. This does not mean that the disintigration took place the last year.

Don't forget to check not only the grammar but also the meaning and sense of the sentence.

I think I deserve kudos ;)



good catch :)
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Re: Test2-91. (29317-!-item-!-188;#058&004234) The [#permalink] New post 03 Jul 2013, 01:11
@Parker Great Explanation! BTW good question!
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Re: Test2-91. (29317-!-item-!-188;#058&004234) The [#permalink] New post 12 Sep 2014, 10:03
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