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Ozone reaches high concentrations twelve miles above Earth,

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Manager
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Joined: 18 Dec 2011
Posts: 107

Kudos [?]: 108 [0], given: 113

Ozone reaches high concentrations twelve miles above Earth, [#permalink]

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New post 26 Dec 2011, 13:58
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Difficulty:

  85% (hard)

Question Stats:

35% (01:06) correct 65% (00:55) wrong based on 83 sessions

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25. Ozone reaches high concentrations twelve miles above Earth, where it has long appeared that it was immune from human influence; we have now realized, though, that emissions of industrial chlorofluorocarbons deplete the ozone layer.
A) has long appeared that it was immune from
B) has long appeared to have been immune from
C) has long appeared as being immune to (Correct idiom)
D) had long appeared immune to
E) had long appeared that it was immune to
[Reveal] Spoiler: OA

Kudos [?]: 108 [0], given: 113

Senior Manager
Senior Manager
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Joined: 13 Aug 2010
Posts: 281

Kudos [?]: 35 [0], given: 1

Re: 1000 SC [#permalink]

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New post 27 Dec 2011, 01:02
'had long appeared' -- longer applied
immune to -- correct usage.

Kudos [?]: 35 [0], given: 1

Manager
Manager
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Joined: 18 Dec 2011
Posts: 107

Kudos [?]: 108 [0], given: 113

Re: 1000 SC [#permalink]

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New post 07 Jan 2012, 17:00
I though the correct sentence should have started with has, but they have the wrong idiom usage, is my explanation correct:

A) has long appeared that it was [b]immune from [/b]
B) has long appeared to have been immune from
C) has long appeared as being immune to (Correct idiom, but uses being)
D) had long appeared immune to (Correct idiom)
E) had long appeared that it was immune to (Correct Idiom, to long, and unnecessary use of it)

Kudos [?]: 108 [0], given: 113

Intern
Intern
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Joined: 26 Jan 2016
Posts: 46

Kudos [?]: 1 [0], given: 42

Location: India
Concentration: General Management, Statistics
Schools: ISB '18
GMAT 1: 670 Q49 V31
GMAT 2: 730 Q49 V41
GPA: 3
WE: Information Technology (Computer Software)
Re: Ozone reaches high concentrations twelve miles above Earth, [#permalink]

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New post 31 Aug 2017, 02:38
IMO D is correct here, since it was previously assumed that Ozone is immune at that level. But later it has been known that CFC from industrial emissions can deplete Ozone at that level, so we are in the past of past hence use "had", also immune to is the correct idiom.

Kudos [?]: 1 [0], given: 42

Re: Ozone reaches high concentrations twelve miles above Earth,   [#permalink] 31 Aug 2017, 02:38
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Ozone reaches high concentrations twelve miles above Earth,

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