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[Problem Solving]
试题详情
题目：
Is x2 − y2 even?
(1) x + y is odd.
(2) x – y is odd.
选项:
A、Aif statement (1) ALONE is sufficient to answer the question but statement (2) alone is not sufficient;
B、Bif statement (2) ALONE is sufficient to answer the question but statement (1) alone is not sufficient;
C、Cif the two statements TAKEN TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient;
D、Dif EACH statement ALONE is sufficient to answer the question;
E、Eif the two statements TAKEN TOGETHER are still NOT sufficient to answer the question.
答案:
D
提问：
为什么不选C？
解答：
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提问：
为什么不选C？
解答：
点赞0
阅读1033
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