题目
题型：解答题难度：一般来源：不详
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答案
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=-1-
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=-
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=-
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核心考点
举一反三
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A．-8
| B．-4
| C．
| D．4
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（1）-4、-5、+7三个数的和比这三个数绝对值的和小多少？
（2）从-1中减去-
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A．-8
| B．-4
| C．
| D．4
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