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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题目里说certain pari of ,这个pair of是指两个数的意思么？我理解的pair of 是成对出现的所以-1, 1这叫pair of,1,3，就不叫。所以选了D。答案是C

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