Problem Solving

试题详情

题目:

 If x ≠ 0, is |x| > 1?
(1) x4 < 1
(2) xx = 1 

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:

A

提问:

(1) x4 < 1 则x<1 (2) xx = 1 x2=1 所以选择D
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