如图注：第六次人口普查同第五次相比，65岁及以上人口（老年人

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如图

注：第六次人口普查同第五次相比，65岁及以上人口（老年人口）的比重上升1.91%。
以上统计数据表明我国在人口方面存在的问题有
①我国人口的增长速度减
②我国人口文化素质偏低
③我国的人口老龄化加快
④我国人口总量大

A．①②④

B．①③

C．②③④

D．①②③④

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