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# Once positioned in space, the Hubble Space Telescope will

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Director
Joined: 04 Jan 2006
Posts: 922

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Once positioned in space, the Hubble Space Telescope will [#permalink]

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09 Feb 2006, 11:09
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Once positioned in space, the Hubble Space Telescope will capture light from sources twenty times fainter compared to those that can be detected by ground-based instruments.
(A) compared to those that can b detected
(B) compared to those they can detect
(C) than that can be detected
(D) than those that can be detected
(E) than those detecting

My confusion arises from when to use "compared to" vs "than".. I am pretty sure neither Pricenton nor Kaplan mentioned anything about this topic.

Kudos [?]: 37 [0], given: 0

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Current Student
Joined: 29 Jan 2005
Posts: 5207

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09 Feb 2006, 21:34
willget800 wrote:
Once positioned in space, the Hubble Space Telescope will capture light from sources twenty times fainter compared to those that can be detected by ground-based instruments.
(A) compared to those that can b detected
(B) compared to those they can detect
(C) than that can be detected
(D) than those that can be detected
(E) than those detecting

My confusion arises from when to use "compared to" vs "than".. I am pretty sure neither Pricenton nor Kaplan mentioned anything about this topic.

~fainter than~ is the comparative structure used here.

(D) correctly restates sources with "those"

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Director
Joined: 10 Oct 2005
Posts: 713

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10 Feb 2006, 10:02
D it is))
fainter needs than i think so A and B out
sources needs those so C is out
E is out cause it sounds not realy correct IMHO))
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Manager
Joined: 15 May 2005
Posts: 77

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11 Feb 2006, 09:30
Me too... D too...

fainter ... than is idiomatic - fainter is already a comparison ... so adding "compare to" is redundant..

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Director
Joined: 04 Jan 2006
Posts: 922

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11 Feb 2006, 17:38
OA is D.. Thanks!

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11 Feb 2006, 17:38
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