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投资者进行金融衍生工具交易时，要想获得交易的成功，必须对利率、汇率、股价等因素变动的趋势做出预测，这是衍生工具的（）所决定的
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保险公司为了弥补临时性或者阶段性资本不足，经批准募集、期限在五年以上（含五年），且本金和利息的清偿顺序列于保单责任和其他负债之后、先于保险公司股权资本的保险公司债务属于（）
有关基金资产的估值，下列说法不正确的是（）
下列证券中，受到利率风险影响较小的证券为（）
The growth of population during the past few centuries is no proof that population will continue to grow straight upward toward infinity and doom. On the contrary, demographic history offers evidence that population growth has not been at all constant. According to paleo-ecologist Edward Deevey, the past million years show three momentous changes. The first, a rapid increase in population around one million B. C., followed the innovations of tool-making and tool-using. But when the new power from the use of tools had been exploited, the rate of world population growth fell and became almost stable. The next rapid jump in population started perhaps 10,000 years ago, when men began to keep herds, plow and plant the earth. Once again when initial productivity gains had been absorbed, the rate of population growth abated. These two episodes suggest that the third great change, the present rapid growth, which began in the West between 250 and 350 years ago, may also slow down when, or if technology begins to yield fewer innovations. Of course, the current knowledge revolution may continue without foreseeable end. Either way contrary to popular belief in constant geometric growth--population can be expected in the long mn to adjust to productivity. How many significant demographic changes ever occurred in the past one million years
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