Recently discovered fossil evidence casts doubt on the : GMAT Critical Reasoning (CR)
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# Recently discovered fossil evidence casts doubt on the

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

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03 Jan 2004, 10:01
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11. 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 rate. 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 opposing position is based on erroneous information

(B) establishing a general principle that it then uses to draw a conclusion about a particular case

(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 rather than the other of two present-day phenomena
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03 Jan 2004, 11:29
That's a doozy!

(A) attempting to justify one position by demonstrating that an opposing position is based on erroneous information

Looks good at first, but I don't think so-- He doesn't cite any errors in "information" per se, but cites evidence that is inconsistent with the current classification

(B) establishing a general principle that it then uses to draw a conclusion about a particular case

He never establishes a "general principle" such as "all hollow-boned animals are not most closely related to reptiles"

(C) dismissing a claim made about the present on the basis of historical evidence

Not even close.

(D) assuming that if all members of a category have a certain property then all things with that property belong to the category

I don't know that he "assumes" anything, but this is probably correct.

(E) presenting evidence that a past phenomenon is more similar to one rather than the other of two present-day phenomena

Are the presence of hollow bones and arched mouths really "phenomena"? Sounds like a good answer otherwise...

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03 Jan 2004, 13:17
Correct answer is E. I chose D. However I never thought that the author talks about two phenomenon

Hi stoolfi ( I like this name - if it is your name )
Your explainations are very good indeed.
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Re: Recently discovered fossil evidence casts doubt on the [#permalink]

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11 Apr 2016, 04:10
i think the right answer is E. I will go with E.
Re: Recently discovered fossil evidence casts doubt on the   [#permalink] 11 Apr 2016, 04:10
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