GRE考试

【单选题】


网考网参考答案：B
网考网解析：
Column A: since b ＜ 2, ab＜2a. Column B: since b ＞ a, b + a ＞ a + a = 2a. Column B is greater. **Use TACTIC 1, Chapter 12. Plug in numbers that satisfy the condition. Column A: (1.1)(1.8) = 1.98. Colunm B: 1.1 + 1.8 = 2.9. This time, Column B is greater. Eliminate Choices A and C, and try other numbers. Each time Column B will be greater. Choose B. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>