Sunspots, vortices of gas associated with strong : GMAT Sentence Correction (SC)
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# Sunspots, vortices of gas associated with strong

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Intern
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Sunspots, vortices of gas associated with strong [#permalink]

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14 Aug 2007, 17:54
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Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sun’s poles or equater.

(A)..
(B) are visible as dark spots that never have been sighted on the surface of the Sun
(C) appear on the surface of the Sun as dark spots although never sighted at
(D) appear as dark spots on the surface of the Sun, although never having been sighted at
(E) appear as dark spots on the Sun's surface, which have never been sighted on
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14 Aug 2007, 18:33
What's wrong with A?

I guess I like the are visible...sighted on more than appear on...never sighted at
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14 Aug 2007, 19:15
eschn3am wrote:
What's wrong with A?

I guess I like the are visible...sighted on more than appear on...never sighted at

I think it has tense problem... makes you think sunspots can be present on poles but no one has seen them yet...
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04 Jun 2009, 18:20
This is Q14 of the OG 12th ed. The OA is A, however:

1. I don't understand the OE of option (C), in that "sighted is not a complete verb".

2. I don't understand the OE of the top paragraph which states "[b]The adjective visible is a complement [/b]and is parallel to the past particle sighted"

Appreciate any form of explanation. Thanks
Re: SC: Sunspots   [#permalink] 04 Jun 2009, 18:20
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