考点有主要三个 1. economic 不等於economical B C错 2.假设时态 would have 来形容人口学家未来需要比现在了解更多 AB错 3.比较主体 未来人口学家要比 现在人口学家了解更多 人口学家v.s 人口学家 而非人口学家V.S 现在 NOW E错 ONLY D is correct on three points!! ※ 引述《redeyes (NimmDeineHoeflichkeit)》之铭言： : To develop moew 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 economic : 答案是D : 请问这题为什麽要用would呢? economic或economical在这题也是考点吗? : 感谢~ --

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