What is the sum of a certain pair of consecutive odd integers? (1)     At least one of the integers is negative. (2)     At least one of the integers is positive._出国考试答疑器_GMAT

What is the sum of a certain pair of consecutive odd integers?

(1) At least one of the integers is negative.

(2) At least one of the integers is positive.

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对于a certain pair of consecutive odd integers的理解不太明白

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题目说的是连续的奇数，条件说的是至少，没说仅有一个，答案是C，但是我觉得可能是-1,1,3，5,7也可能是-3，-1,1,3,结论不确定啊。怎么会选C呢？

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