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# Ozone

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Manager
Joined: 21 Feb 2009
Posts: 99

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21 Jul 2009, 02:28
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Manager
Joined: 17 Apr 2009
Posts: 126

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21 Jul 2009, 05:45
Ans looks like D.What is the OA?
Director
Joined: 01 Apr 2008
Posts: 821
Name: Ronak Amin
Schools: IIM Lucknow (IPMX) - Class of 2014

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21 Jul 2009, 06:56
Between D and E > Usage of "had appeared".
We cannot use "has appeared" because this means that even now it is appearing that ozone is immune, however second part clearly says that now the view has changed.

E > "it" is ambiguous.
So D. OA?
Director
Joined: 05 Jun 2009
Posts: 678
WE 1: 7years (Financial Services - Consultant, BA)

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21 Jul 2009, 13:47
Economist wrote:
Between D and E > Usage of "had appeared".
We cannot use "has appeared" because this means that even now it is appearing that ozone is immune, however second part clearly says that now the view has changed.

E > "it" is ambiguous.
So D. OA?

How is that possible two are independent clauses separated by ';', so how you will justify the past perfect usage by using the event of other independent clause?

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VP
Joined: 16 Jul 2009
Posts: 1222
Schools: CBS
WE 1: 4 years (Consulting)

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21 Jul 2009, 14:05
It says that "we have NOW realized...", so 1st clause must be in the past: had. In E "it" is ambigous, so I definitely vote for D!

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Senior Manager
Joined: 17 Jul 2009
Posts: 255
Concentration: Nonprofit, Strategy
GPA: 3.42
WE: Engineering (Computer Hardware)

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21 Jul 2009, 16:12
so the sentence says:

Ozone...reaches high concentrations 12 miles above earth, where it ....; we now think otherwise.

because of the now usage, so what it appeared to be need to be used with had appeared...

so D?

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This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

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Re: Ozone &nbs [#permalink] 21 Jul 2009, 16:12
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