标题: GWD数学第一套13 [打印本页] 作者: stella1220 时间: 2012-8-21 05:56 标题: GWD数学第一套13 If x and y are positive, is 3x > 7y? (1) x > y + 4 (2) -5x < -14y
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient.