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英语
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10000 years ago ,the world's population was very s
人气：377 ℃ 时间：2020-02-04 16:30:28
解答
small
指人口很少（不多）
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ten thousand years ago,the world's population was very small.
1.The population of the world has grown very fast _____four hundred years.
the population of the world has grown very fast ( ）four hundred years
About 2000 years ago,the world's population was p------- about 250 million.
5. The population of the world i_____ very fast
原子核的人工转变与核反应的区别
加速度在数值上等于单位时间里速度的变化
例；丹凤眼.什么眉,什么鼻,什么嘴
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