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For some birds the sense of smell appears to play a role in

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SVP
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For some birds the sense of smell appears to play a role in [#permalink]

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New post 29 Oct 2005, 05:07
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A
B
C
D
E

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19. For some birds the sense of smell appears to play a role in navigation, since pigeons with surgically removed olfactory nerves were found to have increased difficulties in homing.
(A) were found to have increased difficulties
(B) have been found to have increased difficulty
(C) were found to have increasing difficulty
(D) had been found to have increased difficulties
(E) have been found to have increasing difficulties
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hey ya......

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New post 29 Oct 2005, 05:20
B for the correct S-V agreement. Also we need a present perfect tense + passive voice to demonstrate a phenomenon.

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Director
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New post 29 Oct 2005, 07:11
GMATT73 wrote:
B for the correct S-V agreement. Also we need a present perfect tense + passive voice to demonstrate a phenomenon.


Is it a phenomenon?

IMO, it's an experiment.
An experiment is conducted once in the past.

I vote for (A).
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Auge um Auge, Zahn um Zahn :twisted: !

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New post 29 Oct 2005, 07:18
Right you are again gamjatang! Amazing how much accuracy one loses after just a couple days off... :oops:

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Senior Manager
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New post 30 Oct 2005, 00:31
I am confused between A and C.

Can someone pl. explain both the choices?

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SVP
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 [#permalink]

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New post 03 Nov 2005, 11:19
OA is A . good job guys.
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  [#permalink] 03 Nov 2005, 11:19
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For some birds the sense of smell appears to play a role in

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