2. 外语
  3. Point S (not shown) lies above the x-axis such that △RST has area equal to 6. Column A Column B

Point S (not shown) lies above the x-axis such that △RST has area equal to 6. Column A Column B

admin2009-05-19  21
问题
Point S (not shown) lies above the x-axis such that △RST has area equal to 6.

Column A                                 Column B
The x-coordinate of point S              The y-coordinate of point S
选项 A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given
答案D
解析 点S(未画)位于x轴的上方，△RST面积等于6。比较点S的x坐标与点S的y坐标。
解：本题的正确答案为(D)。该题是让考生比较S点的横坐标与纵坐标的大小。根据△RST面积等于6和底边RT长等于4可以求出S点的纵坐标数值(等于三角形的高)，而三角形底为4，由三角形面积关系可以求出y=3，而任意同底等高的三角形面积都相等，故S取y=3直线上任一点均可满足条件，所以点S的x坐标是不确定的。
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本试题收录于： GRE QUANTITATIVE题库GRE分类
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