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【单选题】
下面结论正确的有( ) 1 两个有理数相加,和一定大于每一个加数. 2 一个正数与一个负数相加得正数. 3 两个负数和的绝对值一定等于它们绝对值的和. 4 两个正数相加,和为正数. 5 两个负数相加,绝对值相减. 6 正数加负数,其和一定等于 0A.
0
B.
1
C.
2
D.
3
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