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# Geologists believe that the Bering land bridge, over which

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Director
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Geologists believe that the Bering land bridge, over which [#permalink]

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01 Feb 2005, 07:30
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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
If you have any questions
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VP
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01 Feb 2005, 09:02
A) !

were thought is incorrect => eliminate B,C and E

b/w A) and D) i choose A), cause D) sounds awkward
Director
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01 Feb 2005, 09:54
Seems that everyone got this right.
Now my question is: why "to have first entered", and why not just "to first enter"
By saying "to have first entered", it seems like they still "enter" from past to present since this is present perfect.
SVP
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01 Feb 2005, 10:10
(A)

to enter would mean they enter through there all the time, while what we want to say is that they have done it in the past.
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01 Feb 2005, 10:13
OA is (A)
Director
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01 Feb 2005, 11:20
(A)..

Keep them coming qhoc0010, you seem to have a pool of real GMAT-like questions. I can see what's being testedf from most of the questions you are posting.
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01 Feb 2005, 11:22
I think A as well....correct tense (believe...are)
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01 Feb 2005, 21:02
Because you need a past verb tense (entered). They did the action in the past, therefore, A is the only viable answer.
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01 Feb 2005, 21:33
OK, so there is something I don't get fundamentally.

So when you say: to have v-ed
That means the action was in the past and it already stopped, correct?

"to have v-ed" differs from "present perfect" bcause "present perfect" means the action is happening from past to present, correct?
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02 Feb 2005, 00:44
My understanding is that present perfect sometimes is about a continued action, but other times is about things that have been done in the past.

For example:

I've always loved maths.
(I still love it)

I've been to ShenZhen twice.
(I may not be there right now.)
Director
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02 Feb 2005, 01:55
Yeah, I got what you are saying. As a matter of fact, that was what I learned in school too. GMAT changed my thought about the use of present perfect a little bit. So far, every SC question with present perfect refers that the action was from past to present.
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02 Feb 2005, 06:29
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Present perfect tense is about actions done in the past and stretch to the present but it is also about actions that ended in the past, period. I agree with Honghu's explanation and I will refer you to this link explaining present perfect: http://www.ccc.commnet.edu/grammar/tens ... erfect.htm
Look and scroll down the top right box.
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Re: Geologists believe that the Bering land bridge, over which [#permalink]

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10 Jul 2016, 11:17
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Geologists believe that the Bering land bridge, over which   [#permalink] 10 Jul 2016, 11:17
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