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GMAT Verbal Sentence Correction
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Author:  Brams [ Mon Dec 10, 2012 10:12 am ]
Post subject:  GMAT Verbal Sentence Correction

Though certain types of thunderclouds are noted for their ominous appearance, there is often a more substantial difference in potential snowfall between two examples of the same cloud type as there is between examples of different cloud types.

A. is often a more substantial difference in potential snowfall between two examples of the same cloud type as there is
B. is often more difference in potential snowfall between two examples of the same cloud type as to find one
C. is often a more substantial difference in potential snowfall between two examples of the same cloud type than
D. are often more substantial differences in potential snowfall between two examples of the same cloud type as there are
E. are often more substantial differences in potential snowfall between two examples of the same cloud type than there is


(C) The words “more” and “as” in the underlined portion signal that a comparison is being introduced. However, they don’t match either other. “More” should be followed by “than,” a word which appears only in choices (C) and (E).

Choice (E) includes the correct idiom, but the comparison is not grammatically correct. To abbreviate, it says: “there are more substantial differences…than there is.” The keyword is the last one. The comparison is between the “differences” which is plural. Since “are” (the plural verb) appears in the first part of the comparison, it must be used in the second part as well. Choice (C) does not contain this conflict and is correct.
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I find the inclusion of "a" before more – both in question statement as well as in choice C – not right. Shouldn't that "a" be omitted?

Author:  Nick [ Mon Dec 10, 2012 10:13 am ]
Post subject:  Re: GMAT Verbal Sentence Correction

Quote:
I find the inclusion of "a" before more – both in question statement as well as in choice C – not right. Shouldn't that "a" be omitted?
The "a" is referring to the difference, which is a singular noun therefore the "a" is correct. It would only be omitted if the statement was referring to plural "differences," as in "there are often more substantial differences..."

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