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325. human beings

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325. human beings [#permalink] New post 28 Apr 2008, 00:39
325.Geologists believe that the Bering land bridge, over which human beings are thought to have first entered the Americans, disappeared about 14,000 years ago when massive glaciers melted and caused the sea level to rise several hundred feet worldwide.
(A) are thought to have first entered
(B) were thought first to enter
(C) were thought at first to enter
(D) are thought of as first entering
(E) were thought to first enter
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Re: 325. human beings [#permalink] New post 28 Apr 2008, 04:12
i think its A.
hard the explain.. :evil:
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Re: 325. human beings [#permalink] New post 28 Apr 2008, 04:41
D for me
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Re: 325. human beings [#permalink] New post 28 Apr 2008, 06:19
sondenso wrote:
325.Geologists believe that the Bering land bridge, over which human beings are thought to have first entered the Americans, disappeared about 14,000 years ago when massive glaciers melted and caused the sea level to rise several hundred feet worldwide.
(A) are thought to have first entered
(B) were thought first to enter
(C) were thought at first to enter
(D) are thought of as first entering
(E) were thought to first enter


A too, as I feel "are" is correct because the belief is still true today.
D has incorrect comparison between "human beings" and "entering..."
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Re: 325. human beings [#permalink] New post 28 Apr 2008, 06:22
We require present tense in underlined portion(As till now scientist believe that humans entered Americas over bering land bridge). A and D satisfy the condition .In D as and entering is not appropriate ,so A is the best choice
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Re: 325. human beings [#permalink] New post 28 Apr 2008, 16:18
A - the original sentence is correct.
BCE - change meaning by using past tense "were". D uses present participle "entering" incorrectly.
sondenso wrote:
325.Geologists believe that the Bering land bridge, over which human beings are thought to have first entered the Americans, disappeared about 14,000 years ago when massive glaciers melted and caused the sea level to rise several hundred feet worldwide.
(A) are thought to have first entered
(B) were thought first to enter
(C) were thought at first to enter
(D) are thought of as first entering
(E) were thought to first enter
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Re: 325. human beings [#permalink] New post 28 Apr 2008, 16:30
sondenso wrote:
325.Geologists believe that the Bering land bridge, over which human beings are thought to have first entered the Americans, disappeared about 14,000 years ago when massive glaciers melted and caused the sea level to rise several hundred feet worldwide.
(A) are thought to have first entered
(B) were thought first to enter
(C) were thought at first to enter
(D) are thought of as first entering
(E) were thought to first enter


The bridge over which human beings entered should be in the past tense. "It disappeared" eliminate everything with "are"
I think the answer is E.
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Re: 325. human beings [#permalink] New post 05 Jul 2008, 15:35
for nonnative could so please explain why past tense in B is wrong here??

thanks
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Re: 325. human beings [#permalink] New post 06 Jul 2008, 17:55
@rw

B is incorrect because it changes the meaning of the OS and sounds as if the human beings are the first to enter the Americas.
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Re: 325. human beings [#permalink] New post 06 Jul 2008, 18:12
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Re: 325. human beings [#permalink] New post 06 Jul 2008, 18:15
325.Geologists believe that the Bering land bridge, over which human beings are thought to have first entered the Americans, disappeared about 14,000 years ago when massive glaciers melted and caused the sea level to rise several hundred feet worldwide.

(A) are thought to have first entered

- IMO A. What stumped me is "are" which indicates the present tense. At first I thought the answer is E. However, the thing is the sentence is conveying that even till today it is still thought that the human beings used the Bering land bridlge to cross to the Americas. Therefore teh use of "are" is correct here.
Re: 325. human beings   [#permalink] 06 Jul 2008, 18:15
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325. human beings

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