Tektites, which may have been propelled to Earth from lunar : GMAT Sentence Correction (SC)
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# Tektites, which may have been propelled to Earth from lunar

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Manager
Joined: 08 Aug 2003
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Tektites, which may have been propelled to Earth from lunar [#permalink]

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20 Nov 2003, 23:24
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50% (02:32) correct 50% (00:00) wrong based on 3 sessions

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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 lava’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 lava’s,
containing

Last edited by Mikhail on 21 Nov 2003, 00:23, edited 1 time in total.
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Intern
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20 Nov 2003, 23:38
C???

reason i could think:

the chemical composition of tektites is compared with that of terrestrial lava. so C or E. but E unnecessary 's after lava. So C.

official answer ??
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21 Nov 2003, 01:38
B and C are the best, no doubt.
I for one would vote for C. Never have I seen DIFFER THAN on the test though such construction is considered OK by some grammar books.
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21 Nov 2003, 01:49
C is correct

BUT

I think the reason behind this answer lies in the actual meaning of the sentence. We should use "they" to refer to the Tektites, otherwise meaning of the sentence changes
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24 Nov 2003, 22:46
I think the answer is C due to :

a. 'different from' - is an idiomatic phrase
b. 'is different from that of any terrestrial lava' - compaires 'apple to apple'. In fact, I noticed that every time there's a comparison, the right answer would be the one that containes '..... that of ...'
24 Nov 2003, 22:46
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# Tektites, which may have been propelled to Earth from lunar

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