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【单选题】
有下列说法：①任何无理数都是无限小数；②数轴上的点与有理数一一对应；③绝对值等于本身的数是0；④0除以任何数都得0 ⑤近似数7.30所表示的准确数a的范围是：7.295≤a＜7.305．其中正确的个数是（ ）A.
1
B.
2
C.
3
D.
4
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