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# Tektites, which may have been propelled to Earth from lunar

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Director
Joined: 17 Oct 2005
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Tektites, which may have been propelled to Earth from lunar [#permalink]

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24 Nov 2005, 19:53
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Tektites, which may have been propelled to Earth from lunar volcanoes, are much like the volcanic glass obsidian, but their chemical composition is different than any terrestrial lava; they contain far less water than obsidian does and none of its characteristic microcrystals.

(A) is different than any terrestrial lava; they contain
(B) is different than any terrestrial lavaâ€™s, containing
(C) is different from that of any terrestrial lava; they contain
(D) differs from any terrestrial lava in containing
(E) differs from that of any terrestrial lavaâ€™s, containing

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Director
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24 Nov 2005, 21:15
I was stuck btwn C and E. why would you choose C over E?

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SVP
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24 Nov 2005, 21:49
joemama142000 wrote:
Tektites, which may have been propelled to Earth from lunar volcanoes, are much like the volcanic glass obsidian, but their chemical composition is different than any terrestrial lava; they contain far less water than obsidian does and none of its characteristic microcrystals.

(C) is different from that of any terrestrial lava; they contain

(E) differs from that of any terrestrial lavaâ€™s, containing

C uses correct idiom "different ...from"
E is incorrect coz it uses repeated possession" that of .....lava's"

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Manager
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25 Nov 2005, 03:33
One more C.

diffirent/differ ... from is the correct idiom.: A, B out

chemical composition compare with chemical composition, not lava: D out

that of any terrestrial lava's: redundant possessive case.

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Current Student
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25 Nov 2005, 08:46
joemama142000 wrote:
I was stuck btwn C and E. why would you choose C over E?

A comma separates two senteces that can grammatically stand on their own. This can`t work with E.

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Manager
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25 Nov 2005, 12:01
I would also choose C

since different from/differ from is the correct idiom and E is wordy, and in D I dont like the in containing which does not make sense in presenting a coherent sentence.

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SVP
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25 Nov 2005, 12:05
different from is the correct idiom and should be used.

so C is the correct answer.
_________________

hey ya......

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SVP
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25 Nov 2005, 12:39
the comparision is between chemical composition of Tektites and the chemical composition of any other terrestrial lava. So C looks like as under:

C. Tektites, which ........., are ........, but their chemical composition is different from that (the chemical composition) of any terrestrial lava; they contain far less .... microcrystals.

joemama142000 wrote:
I was stuck btwn C and E. why would you choose C over E?

In E, the comparision is between chemical composition of Tektites and the chemical composition of any other terrestrial lava's. Lava's is unnecessary and wrong. E is more like this:

Tektites, which ......., are much like the volcanic glass obsidian, but their chemical composition differs from that of any terrestrial lavaâ€™s, containing far less ........... microcrystals.

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SVP
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25 Nov 2005, 12:43
'C' is correct.

usage of 'different from' & correct comparison.

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Director
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25 Nov 2005, 16:02
the OA is C

thanks lax, i didnt catch that repeated possesion.

I dont know about the Gmat but different than is not always wrong in standard written english. It can be used to avoid awkward construction.

Ex. Please let me know if your plans are diffferent from what they were six years ago.

It is prefferable to say

Please let me know if your plans are different than they were six years ago.

Correct me if im wrong

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Director
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25 Nov 2005, 16:15
joemama142000 wrote:
the OA is C

thanks lax, i didnt catch that repeated possesion.

I dont know about the Gmat but different than is not always wrong in standard written english. It can be used to avoid awkward construction.

Ex. Please let me know if your plans are diffferent from what they were six years ago.

It is prefferable to say

Please let me know if your plans are different than they were six years ago.

Correct me if im wrong

wow!! that's interesting ...somebody pls throw some light on this......

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SVP
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25 Nov 2005, 20:50
joemama142000 wrote:
I dont know about the Gmat but different than is not always wrong in standard written english. It can be used to avoid awkward construction.

Ex. Please let me know if your plans are diffferent from what they were six years ago.
It is prefferable to say: Please let me know if your plans are different than they were six years ago.

Correct me if im wrong

I have also seen some sentences with different than but those sentences also contained more. forex:

X and Y are no more different than A and B.

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CEO
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20 Jun 2007, 09:07
joemama142000 wrote:
I was stuck btwn C and E. why would you choose C over E?

in E, that of any terrestrial lava's

that of already denotes possession. The pluralization of lava is redundant.

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20 Jun 2007, 09:07
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# Tektites, which may have been propelled to Earth from lunar

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