The period when the great painted caves at Lascaux and : GMAT Sentence Correction (SC)
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# The period when the great painted caves at Lascaux and

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The period when the great painted caves at Lascaux and [#permalink]

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18 Nov 2003, 04:13
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The period when the great painted caves at Lascaux and Altamira were occupied by Upper Paleolithic people has been established by carbon-14 dating, but what is much more difficult to determine are the reason for their decoration, the use to which primitive people put the caves, and the meaning of the magnificently depicted animals.

A. has been established by carbon-14 dating, but what is much more difficult to determine are
B. has been established by carbon-14 dating, but what is much more difficult to determine is

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18 Nov 2003, 05:04
I will go with the option B.

The second bart of the sentence which starts with but has a subject verb inversion where subject is reason hence the verb used should be singular which is 'is'┬и.

jay
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18 Nov 2003, 05:07
sorry i was hasty it should be 'a'. I did not see the rest of the sentence. Sentences where 'and' is used take plural verb which should be 'are' in this case.

oops!
jay
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18 Nov 2003, 07:05
Guys,

you are wrong (as I was)!

The answer is B (please look it up in OG SC № 211)

Can anybody explain what is the problem here?
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18 Nov 2003, 07:57
think --singular-- 'the reason' tell the story behind using 'is'. Again, 'is' relates with '..the reason..' not with the aforementioned nouns.

"...more difficult to determine 'is' the reason ...."
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18 Nov 2003, 08:00
My guess is that "reason", "meaning", and "use" are singular.

But maybe that's obvious. Tough question. I missed it.
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18 Nov 2003, 13:26
IMO"reason" is the reason for choice B being the right choice

can anyone tell me how different is the question base of teh 9th edition of OG compared to the 10th edition?
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Re: SC: The period when ... [#permalink]

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27 May 2011, 03:18
I think option (B) but I'm not sure about it. Tricky question

Parallelism is such a vast subject
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Re: SC: The period when ... [#permalink]

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28 May 2011, 18:13
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+1 B

After "but" there is a new clause. "what is much more difficult to determine" is the subject of the new clause, and it is singular.
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Re: SC: The period when ... [#permalink]

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28 May 2011, 23:10
i saw this used as an example on one of the very old Ron's Thursday session. And its mentioned as 'the reason for decoration.... depicted animals' is the list and should be treated as one piece.

instead if the sentence is like ... carbon-14 dating, but more difficult to determine... 'are' is required here. Because than one has to use a backward construction, so 'the reason for ...' are treated separately and 'are' will be required for these.
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Re: SC: The period when ... [#permalink]

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29 May 2011, 13:07
Sorry guys but post the entire Sc........is more useful

IMHO B because singular
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Re: SC: The period when ... [#permalink]

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30 May 2011, 09:24
B

but what is much more difficult to determine [is] the reason for their decoration

So-->the reason [is] much more difficult to determine for their decoration.

We are so accustom to the subject coming before the verb that many people are confused when it is reverse. I've seen this pattern several times in the OG.
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Re: SC: The period when ... [#permalink]

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30 May 2011, 11:47
twice is! one is, one are does not work!
Re: SC: The period when ...   [#permalink] 30 May 2011, 11:47
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