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# Recently discovered fossil evidence casts doubt on the

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Senior Manager
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Recently discovered fossil evidence casts doubt on the [#permalink]

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11 Feb 2009, 20:53
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Recently discovered fossil evidence casts doubt on the evolutionary theory
that dinosaurs are more closely related to reptiles than to other classes of
animals. Fossils show that some dinosaurs had hollow bones-a feature found
today only in warm blooded creatures, such as birds, that have a high
metabolic rates. Dinosaurs had well-developed senses of sight and hearing,
which is not true of present-day cold blooded creatures like reptiles. The
highly arched mouth roof of some dinosaurs would have permitted them to
breathe while eating, as fast –breathing animals, such as birds, need to do.
Today all fast-breathing animals are warm blooded. Finally, fossils reveal
that many dinosaurs had a pattern of growth typical of warm-blooded animals.

The argument in the passage proceeds by

(A)Attempting to justify one position by demonstrating that an opposition is
based on erroneous information.
(B)Establishing a general principle that it then uses to draw a conclusion
(C)Dismissing a claim made about the present on the basis of historical
evidence
(D)Assuming that if all members of a category have a certain property then
all things with that property belong to the category
(E)Presenting evidence that a past phenomenon is more similar to one than
the other of two present day
If you have any questions
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Re: fossil evidence - CR [#permalink]

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11 Feb 2009, 21:11
I think it should be A
The argument dismisses the theory that dinosaurs are more close to reptiles and tries to justify the theory that they are more close to warm booded animals by citing various examples
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Re: fossil evidence - CR [#permalink]

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11 Feb 2009, 21:52
The argument in the passage proceeds by

(A)Attempting to justify one position by demonstrating that an opposition is
based on erroneous information.
(B)Establishing a general principle that it then uses to draw a conclusion
(C)Dismissing a claim made about the present on the basis of historical
evidence
(D)Assuming that if all members of a category have a certain property then
all things with that property belong to the category
(E)Presenting evidence that a past phenomenon is more similar to one than
the other of two present day

My Explanation:
------------------------
A.) Even I thought this to be the answer till I read the other options. I think this option is not correct. Though the author doesn't agree with the evolutionary theory about dinosaurs, he doesn't demonstrates this by providing evidences that dinosaurs are not cold-blooded.
He demonstrates this by providing evidences that dinosaurs are actually warm-blooded.

There is difference in the way you're citing evidences. Isn't it?

Analogy:
One way: He's not a good boy. ---> This indirectly indicates that I am good.
Other way: I am a good boy

B.) He's not establishing any general principle. Discard it.

C.) The author is actually doing just opposite. He uses present to dimiss claim about past.

D.) Rubbish. Give me a break. Have a kit-kat! He discusses about some and not all dinosaurs. Still, it's not the main point.

E.) Looks fine to me based on explanation cited in option A.)
------------------------

Option E is my choice.

Hope that helps.
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Last edited by Technext on 11 Feb 2009, 22:08, edited 1 time in total.
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Re: fossil evidence - CR [#permalink]

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11 Feb 2009, 22:01
IMO D

The argument claims based of certain similarities of warm blooded animals that dinosaurs was a warm blooded creature.
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Re: fossil evidence - CR [#permalink]

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11 Feb 2009, 22:18
gmatavenue wrote:
IMO D

The argument claims based of certain similarities of warm blooded animals that dinosaurs was a warm blooded creature.

gmatavenue the argument is talking about some dinasaurus not all...so D is not the correct choice...i also fell in trap .......
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Re: fossil evidence - CR [#permalink]

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30 May 2010, 03:36
OA is E, but Im with A. At least until somebody clarify E.
Thanks.
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Re: fossil evidence - CR [#permalink]

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30 May 2010, 21:34
noboru wrote:
OA is E, but Im with A. At least until somebody clarify E.
Thanks.

The text starts with a talk about recent evidence and does not "demonstrating that an opposition is
based on erroneous information." It is actually, providing new information, rather than trying to argue against evidence presented by the side, who think dinosaurs are related with reptiles. If he was refuting the correctness of the evidence on which the judgment of reptile proponents were based, then option A could be an answer,
Hope that helps.
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Re: fossil evidence - CR   [#permalink] 30 May 2010, 21:34
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