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计算:
(1)-91÷13; (2)-56÷(-14); (3)(-42)÷12;
(4)16÷(-3); (5)-600÷15; (6)(-48)÷(-16);
若两个连续整数的积是56,则它们的和为
A.15
B.-15
C.±15
D.11
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