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If we have $数学公式$ ＜0，a-b＜0 and a+b＞0，then the points in real number axis，given by a and b，can be represented as
（英汉词典point：点；real number axis：实数轴；represent：表示）

A
分析：根据题意，有 $\text{[math]}$ ＜0可得a、b异号，a-b＜0 可得a＜b，a+b＞0可得a＞-b，综合可得，a＜0＜-a＜b，分析选项可得答案．
解答：根据题意，有 $\text{[math]}$ ＜0可得a、b异号，
a-b＜0 可得a＜b，
a+b＞0可得a＞-b，
综合可得，a＜0＜-a＜b，
分析可得，A符合．
故选A．
点评：本题考查实数与数轴的关系，要求学生会判断实数的大小关系，进而再数轴上表示．

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If we have＜0，a-b＜0 and a+b＞0，then the points in real number axis，given by a and b，can be represented as （英汉词典point：点；real number axis：实数轴；represent：表示）

If we have $数学公式$ ＜0，a-b＜0 and a+b＞0，then the points in real number axis，given by a and b，can be represented as
（英汉词典point：点；real number axis：实数轴；represent：表示）