Q24: In the xy-plane, the line k passes through the origin and through the point (a, b), where ab ≠ 0. Is b positive? (1) The slope of line k is negative. (2) a < b 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.
答案选C，是否B更合适？ 因为根据题意可看出，只要在满足条件（2）（a<b，即x<y）的情况下，就能看出,(a,b)只能在坐标轴第一象限，即y>0，即b>0 | 
