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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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sosGWD第一套Q32答案为何是E而不是B?

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violetcxd
楼主
发表于 2006-10-24 22:50:00 | 只看该作者

sosGWD第一套Q32答案为何是E而不是B?

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
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violetcxd
沙发
 楼主| 发表于 2006-10-26 11:34:00 | 只看该作者
?有没有XDJM给我些提示啊?
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aqualon
板凳
发表于 2006-10-26 12:11:00 | 只看该作者
they在这里指代demographers,所有从整个句子的意思上讲“demographers做了一些繁殖力的社会和经济性的决定因素“，这样就不合逻辑了。而且这里运用了同样一件事在不同的时间点做了比较，所以要用过去时。所以E是正确的
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