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OG13 SC 42
42. To develop more accurate population forecasts, demographers have to know a great dial more than noow about the social and economic determinants of fertility
D. would have to dnow a great deal more than they do now about the social and economic
求指教啊求指教~~~
通过一些排除最后答案选D,但是我没搞懂的是OG的解释写的是:this sentence explains a hypothetical situation and therefore calls for a conditional-or contrary-to-fact-construction
这里有必要用虚拟语气吗?~~~~ |
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