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标题: 大全一题 [打印本页]

作者: vict2006 时间: 2007-3-6 15:39
标题: 大全一题

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

have to know a great deal more than now about the social and economic
have to know a great deal more than they do now about the social and economical
would have to know a great deal more than they do now about the social and economical
would have to know a great deal more than they do now about the social and economic
would have to know a great deal more than now about the social and economical

为什么用would 啊？．．．还有为什么是答案e?

作者: vict2006 时间: 2007-3-8 13:05

请指点，谢谢

作者: vict2006 时间: 2007-3-12 13:26
急救一下啊....................谢谢啦

作者: fionajiang 时间: 2007-3-12 14:42
同问. up up

作者: yzyoung 时间: 2007-3-12 15:36

答案是d吧

就是考两点，一个是比较内容的前后一致

另一个是economic和economical的区别，

感觉e不对

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