The world’s elderly population will exceed(超过) ____ of children by 2060, when each group ____ to account for about one fifth of the populationA.that ; is expectedB.it; will expectC.that; expectsD.one ; will be expected
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A解析试题分析：句意：到2060年为止是，世界老年人口的数量将超过孩子们人口的数量，到那时，分别占到了整个人口的五分之一。that指代the population, be expected to 有望…,不定式形式表将来。考点：that用法及be expected to固定句型点评：that和it主要的区别在于It 常用来代替前文中所提到的同一个东西，属于同名同物，而that属于同名异物。The umbrella you bought is cheaper than that I bought. （替代词that在该句中特指“the umbrella I bought”, 以区别“the umbrella you bought”）；而one 表泛指。