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Scientists have found signs that moving water changed the

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Scientists have found signs that moving water changed the [#permalink] New post 09 Oct 2010, 20:58
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D
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Question Stats:

79% (01:54) correct 21% (01:36) wrong based on 89 sessions
Scientists have found signs that moving water changed the chemical makeup of the surface of Mars in recent eras, therefore concluding that its crust is harboring up to three times as much water than was previously thought.

(A) eras, therefore concluding that its crust is harboring up to three times as much water than was
(B) eras, therefore concluding that the planet's crust harbors up to three times as much water or more as was
(C) eras and have therefore concluded that the planet's crust harbors up to three times as much water as
(D) eras and they have concluded, therefore, that its crust harbors up to three times as much water, or more, than
(E) eras and concluded, therefore, that the planet's crust is harboring up to three times more water as was



SPOILER:






Explain for me the "as well as previously thought" I don't get this.
[Reveal] Spoiler: OA
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Re: Scientists have found signs [#permalink] New post 09 Oct 2010, 22:49
Expert's post
A problem of using the correct comparative idiom

A. As much water than - wrong
B. as much water or more as water – wrong; should be at least as much water as or more water than to mean a sensible comparison
C. up to three times as much water as – correct idiom
D. as much water, or more, than - wrong. The completing as is missing and a comma is unduly intruding after more
E. more water as was - wrong; more water than is required.
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Re: Scientists have found signs [#permalink] New post 09 Oct 2010, 22:52
Expert's post
Explain for me the "as well as previously thought" I don't get this.

Does this question pertain to this problem?
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Re: Scientists have found signs [#permalink] New post 10 Oct 2010, 00:24
the correct idiom is AS ... AS (do not miss 2nd one)
if there is COMPARATIVE form, there comes THAN
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Re: Scientists have found signs [#permalink] New post 26 Apr 2011, 14:36
+1 C

Parallelism.
Idioms: "more" requires "than", otherwise it is wrong.
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Re: Scientists have found signs [#permalink] New post 26 Apr 2011, 18:43
It makes me wonder if the GMAT keep the sentences correctly punctuated. I did not eliminate using idioms. Haha! I just saw that therefore should follow semicolon... and leaves me with C and D... But D has two stand alone clause not separated by a comma and AND...

So I got C. Hmmm... Wonder if that was pure coincidence

gautrang wrote:
Scientists have found signs that moving water changed the chemical makeup of the surface of Mars in recent eras, therefore concluding that its crust is harboring up to three times as much water than was previously thought.

(A) eras, therefore concluding that its crust is harboring up to three times as much water than was
(B) eras, therefore concluding that the planet's crust harbors up to three times as much water or more as was
(C) eras and have therefore concluded that the planet's crust harbors up to three times as much water as
(D) eras and they have concluded, therefore, that its crust harbors up to three times as much water, or more, than
(E) eras and concluded, therefore, that the planet's crust is harboring up to three times more water as was



SPOILER:






Explain for me the "as well as previously thought" I don't get this.
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Re: Scientists have found signs [#permalink] New post 27 Apr 2011, 03:25
gautrang wrote:
Scientists have found signs that moving water changed the chemical makeup of the surface of Mars in recent eras, therefore concluding that its crust is harboring up to three times as much water than was previously thought.

(A) eras, therefore concluding that its crust is harboring up to three times as much water than was
(B) eras, therefore concluding that the planet's crust harbors up to three times as much water or more as was
(C) eras and have therefore concluded that the planet's crust harbors up to three times as much water as
(D) eras and they have concluded, therefore, that its crust harbors up to three times as much water, or more, than
(E) eras and concluded, therefore, that the planet's crust is harboring up to three times more water as was


SPOILER:


Explain for me the "as well as previously thought" I don't get this.


It may sound rude but does it take too much to underline the incorrect part? to me a senetence with out underline looks like a gibrish all over :(
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Re: Scientists have found signs [#permalink] New post 04 May 2011, 03:22
gautrang wrote:
Scientists have found signs that moving water changed the chemical makeup of the surface of Mars in recent eras, therefore concluding that its crust is harboring up to three times as much water than was previously thought.

(A) eras, therefore concluding that its crust is harboring up to three times as much water than was
(B) eras, therefore concluding that the planet's crust harbors up to three times as much water or more as was
(C) eras and have therefore concluded that the planet's crust harbors up to three times as much water as
(D) eras and they have concluded, therefore, that its crust harbors up to three times as much water, or more, than
(E) eras and concluded, therefore, that the planet's crust is harboring up to three times more water as was



SPOILER:






Explain for me the "as well as previously thought" I don't get this.


A) Lack of parallelism
Scientists have found signs......eras, therefore concluding that .....
B) Out for same reason.
C) Seems good..keep it on hold.
D) Wrong: as much water, or more, than
E) Wrong: times more water as was

So it is C.
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Re: Scientists have found signs   [#permalink] 04 May 2011, 03:22
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