Q3:

If k, m, and p are integers, is k – m – p odd?

(1) k and m are even and p is odd.

(2) k, m, and p are consecutive integers.

我选D, 因为我觉得三个连续整数相减为偶数, 所以可以判定k-m-p不是奇数.

你们认为呢?

选A

条件一,单独充分;

条件二,三个连续整数分两种考虑:奇偶奇,偶奇偶,前者相减为偶,后者相减为奇,答案不唯一.

所以选A