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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.

正确答案: D

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GWD 1-32 帮忙确定下答案

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楼主
发表于 2007-10-31 22:33:00 | 只看该作者

GWD 1-32 帮忙确定下答案

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

 

  1. have to know a great deal more than now about the social and economic
  2. have to know a great deal more than they do now about the social and economical
  3. would have to know a great deal more than they do now about the social and economical
  4. would have to know a great deal more than they do now about the social and economic
  5. would have to know a great deal more than now about the social and economical

答案 是E还是D哦?E里面 they do 能省略吗?各位帮忙确定一下哦

沙发
发表于 2007-10-31 22:38:00 | 只看该作者
大家讨论很多,选D吧。E里面的economical是个很严重的错误:)
板凳
发表于 2007-11-1 09:55:00 | 只看该作者
D. 
E 中more than now 比较不对称。
地板
发表于 2007-11-1 10:00:00 | 只看该作者
肯定是D。用排除法,只有economic才是对的,与social相称--这样的话只有A和D。但A里面明显的than now 是不对的,所以是D。
5#
 楼主| 发表于 2007-11-1 10:12:00 | 只看该作者
谢谢各位!!~~~
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