题干

有下列说法:

①无限小数都是无理数;

②数轴上的点和有理数一一对应;

③在1和3之间的无理数有且只有 235678 这6个;

2
2
是分数,它是有理数;

⑤近似数7.30所表示的准确数a的范围是:7.295≤a<7.305;

其中正确的是(   )

A:⑤

B:④⑤

C:③④⑤

D:①④⑤

上一题 下一题 0.0难度 选择题 更新时间:2013-04-08 02:07:39

答案(点此获取答案解析)

A

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