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Fossilized remains of a horn though to be of

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Fossilized remains of a horn though to be of  [#permalink]

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New post 16 Apr 2017, 00:40
1
7
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

56% (00:44) correct 44% (00:56) wrong based on 218 sessions

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Source: Ready4GMAT

Fossilized remains of a horn thought to be of a triceratops found in sedimentary rock in 2011 has been dated to be 65.5 million years old and thus is evidence that dinosaurs existed shortly before the asteroid impact that is believed to have made them extinct.

A) has been dated to be 65.5 million years old and thus is
B) has been dated at 65.5 million years old and thus
C) have been dated to be 65.5 million years old and thus are
D) have been dated as being 65.5 million years old and thus
E) have been dated at 65.5 million years old and thus are

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Re: Fossilized remains of a horn though to be of  [#permalink]

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New post 16 Apr 2017, 01:15
Fossilized remains of a horn thought to be of a triceratops found in sedimentary rock in 2011 has been dated to be 65.5 million years old and thus is evidence that dinosaurs existed shortly before the asteroid impact that is believed to have made them extinct

The following are the errors tested in the above stem:-
1) The subject of the underlined portion is "Remains"; since this a plural subject the verb has to be plural. Thus "Has" should be replaced with "Have" AND "is" with "are"
2) According to GMAT, the correct idiom is "dated at" and not "dated to be"

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Re: Fossilized remains of a horn though to be of  [#permalink]

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New post 17 Apr 2017, 04:59
correct answer is E
fossilized remains = plural so have , A and B are out .
correct idiom is date from/dated at not dated to be, so C and D are out ,left with E only as correct answer.
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Re: Fossilized remains of a horn though to be of  [#permalink]

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New post 01 Jul 2018, 09:02
ashwink wrote:
Source: Ready4GMAT

Fossilized remains of a horn thought to be of a triceratops found in sedimentary rock in 2011 has been dated to be 65.5 million years old and thus is evidence that dinosaurs existed shortly before the asteroid impact that is believed to have made them extinct.

A) has been dated to be 65.5 million years old and thus is
B) has been dated at 65.5 million years old and thus
C) have been dated to be 65.5 million years old and thus are
D) have been dated as being 65.5 million years old and thus
E) have been dated at 65.5 million years old and thus are


subject is "remains" - plural; so A & B are out.
"dated to be" is incorrect idiom, C is out
"dated as being" conveys incorrect meaning. Also parallelism is missing in "and thus". so D is out.

Hence E is the correct answer
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Re: Fossilized remains of a horn though to be of  [#permalink]

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New post 04 Jul 2018, 05:01
fossilized remains is the main subject - plural, so 'has been' (singular) is eliminated. This leaves us with C, D, and E. dated takes the preposition "at", so C and D are invalid. This leaves us with E. Hence, E is the correct answer.
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Re: Fossilized remains of a horn though to be of  [#permalink]

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New post 04 Jul 2018, 05:25
Correct idiom is "dated at" A,C,D eliminated. Between B and E. B is singular, and subject is remains.
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Re: Fossilized remains of a horn though to be of &nbs [#permalink] 04 Jul 2018, 05:25
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