To develop more accurate population forecasts, demographers : GMAT Sentence Correction (SC)
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# To develop more accurate population forecasts, demographers

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Manager
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To develop more accurate population forecasts, demographers [#permalink]

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20 Nov 2007, 12:29
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To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical
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--gregspirited

Last edited by gregspirited on 20 Nov 2007, 12:38, edited 1 time in total.
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Director
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20 Nov 2007, 12:34
gregspirited wrote:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical

B. prediction and comparision.

CDE have "would" that doesnot help express an idea with certainty.
Director
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21 Nov 2007, 06:35
IMO (D). I think 'economic' is better suited here. 'economical' determinants means determinants are economical. A and E are surely out of contention. B and C use 'economical'.
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21 Nov 2007, 09:24
eyunni wrote:
IMO (D). I think 'economic' is better suited here. 'economical' determinants means determinants are economical. A and E are surely out of contention. B and C use 'economical'.

I agree with eyunni and Beyond.

Something is economical if it saves you money;
but if you’re talking about the effect of some measure on the world’s economy, it’s an economic effect.

B - is out ( if it were economic.. then I would have chosen B)

I pick D.

What is OA?
Manager
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21 Nov 2007, 09:28
D. It's clear and concise.

can't be b,c , or e b/c economical is not the proper adj to use in this case. its economic. e.g. economic factors not economical factors
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21 Nov 2007, 10:21
Whats the OA?

I am not convinced with D ; Why should we use would have?
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21 Nov 2007, 10:34
OA is E. I still don't understand why E is right
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--gregspirited

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21 Nov 2007, 11:53
gregspirited wrote:
OA is E. I still don't understand why E is right

Where is this question from? Is it part of the 1000 SC questions?
Director
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21 Nov 2007, 18:22
gregspirited wrote:
OA is E. I still don't understand why E is right

It is possible. It is more on the usage of Infinitives as subject. I am trying to get more info on that.

From what I understand they are more used for firm and deinite tones but it seems they also can be used for conditional or prediction.
21 Nov 2007, 18:22
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