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# To develop more accurate population forecasts, demographers

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VP
Joined: 22 Nov 2007
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To develop more accurate population forecasts, demographers [#permalink]

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06 Jan 2008, 07:22
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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
Intern
Joined: 06 Jan 2008
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06 Jan 2008, 08:16
marcodonzelli 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

D

economical is used in sense of cheaper hence BCE ruled out. In A, E "have to know a great deal more than now" is not clear similar comparison in D is clearer. Hence D is the best
VP
Joined: 22 Nov 2007
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Kudos [?]: 567 [0], given: 0

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06 Jan 2008, 08:21
klepto wrote:
marcodonzelli 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

D

economical is used in sense of cheaper hence BCE ruled out. In A, E "have to know a great deal more than now" is not clear similar comparison in D is clearer. Hence D is the best

I thought D as well....OA is E actually
Intern
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06 Jan 2008, 08:26
.........oops
any logic which goes with this one
VP
Joined: 22 Nov 2007
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06 Jan 2008, 08:39
klepto wrote:
.........oops
any logic which goes with this one

let's find it...i don't have explanations...
Re: sc-economic/economical   [#permalink] 06 Jan 2008, 08:39
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