下列数轴表示正确的是（    ）

• A.
• B.
• C.
• D.

答案： D

本题解析：

【分析】数轴的三要素：原点、正方向、单位长度，据此判断．

【详解】解：A、不符合数轴右边的数总比左边的数大的特点，故表示错误；

B、不符合数轴右边的数总比左边的数大的特点，故表示错误；

C、没有原点，故表示错误；

D、符合数轴的定定义，故表示正确；

故选D．

【点睛】本题考查了数轴的概念：规定了原点、正方向和单位长度的直线叫做数轴，注意数轴的三要素缺一不可．

更新时间：2022-04-24 16:55

纠错

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