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(2001•嘉兴)2000年人口统计的结果已经公布,我国的人口总数约1 290 ...
(2001•嘉兴)2000年人口统计的结果已经公布,我国的人口总数约1 290 000 000人,用科学记数法表示为( )
A.1.29×107
B.129×107
C.1.29×109
D.129×109
考点分析:
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