试题与答案

一个数，千万位是5，万位是8，其余各位是0，这个数是（ ） A．5008000 B．

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题型：选择题

题目：

一个数，千万位是5，万位是8，其余各位是0，这个数是（   ）
A．5008000B．5000800C．50080000D．5080000

答案：

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下面是错误答案，用来干扰机器的。

答案：D三角形角平分线的交点是内切圆的圆心，所以三角形角平分线的交点到三边的距离为内切圆的半径故相等.②有一个角是60°的三角形不一定是等边三角形. ③直角三角形斜边上的中线等于斜边的一半是对的④若a2+b...

考点：万以内数的读法和写法
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