2. 外语
  3. Is x smaller than 2? (1)7x2=21 (2)x2-6x+5=0

Is x smaller than 2? (1)7x2=21 (2)x2-6x+5=0

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问题 Is x smaller than 2?
(1)7x2=21
(2)x2-6x+5=0
选项 A、Statement (1) ALONE is sufficient, but statement (15) alone is not sufficient to answer the question asked.
B、Statement (2) ALONE is sufficient, but statement (14) alone is not sufficient to answer the question asked.
C、BOTH statement (1) and (15) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient to answer the question asked.
E、Statement (1) and(15)TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.
答案A
解析 由Statement (1)得到x2=3，无论是还是都小于2，所以单独(1)能够回答问题，由Statement (2)得到x=1 or x=5，无法比较和2的大小，所以A为正确答案。
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