One of the earliest known birds with a beak and contour : GMAT Sentence Correction (SC)
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# One of the earliest known birds with a beak and contour

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Director
Joined: 05 Feb 2006
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One of the earliest known birds with a beak and contour [#permalink]

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01 Nov 2006, 10:23
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One of the earliest known birds with a beak and contour feathers, Confuciusornis sanctus, with large clawlike "thumbs" on its wings, which probably helped them to climb up to a launching position for flight.

A) with large clawlike "thumbs" on its wings, which probably helped them to

B) with large clawlike "thumbs" on their wings, which probably helped it to

C) had large clawlike "thumbs" on its wings, which probably helped them

D) had large clawlike "thumbs" on its wings, probably to help it

E) had large clawlike "thumbs" on their wings, probably to help it
If you have any questions
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Director
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01 Nov 2006, 11:25
interestign one!

A) with large clawlike "thumbs" on its wings, which probably helped them to (gramatically fine)

B) with large clawlike "thumbs" on their wings, which probably helped it to (use of 'it' is wrong).

C) had large clawlike "thumbs" on its wings, which probably helped them (looks good just 'to' is needed before 'climb')

D) had large clawlike "thumbs" on its wings, probably to help it ('them' needed instead of 'it').

E) had large clawlike "thumbs" on their wings, probably to help it - (it? should be them)

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01 Nov 2006, 14:53
Nothing's wrong. A is the answer.

For B we don't know what "it" refers to.
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01 Nov 2006, 15:42
faifai0714 wrote:
Nothing's wrong. A is the answer.

For B we don't know what "it" refers to.

why can't we have "had" after the comma? i fee you can remove the scientific name, with the comma, and maintain the meaning of the sentence.

btw, I think the correct answer is D
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01 Nov 2006, 16:24
guess for D
this problem is different
One of the earliest known birds with a beak and contour feathers, Confuciusornis sanctus, had large clawlike "thumbs" on its wings, probably to help it to climb up to a launching position for flight.

wouldn't it be better if use their and them instead of its and it????
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01 Nov 2006, 23:38
OA is D
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03 Nov 2006, 18:37
One of the earliest known birds had large clawlike "thumbs" on its wings, probably to help it climb up to a launching position for flight.

Guys,

What is that 'it' (before climb up) referring to? Subject (birds) is plural.
03 Nov 2006, 18:37
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