试题与答案

填空: (1)2008年北京奥运会开幕式于8月8日在被喻为“鸟巢”的国家体育场举

题型:填空题

题目:

填空:

(1)2008年北京奥运会开幕式于8月8日在被喻为“鸟巢”的国家体育场举行。国家体育场建筑面积为25.8万平方米,这个数用科学记数法表示为(          )平方米;

(2)将4006300保留3个有效数字,其近似数为(           )。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A, C

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