问题
单项选择题
Which of the following fractions has the greatest value ？（）
A.A
B.B
C.C
D.D
E.E
答案
参考答案：A
解析：
This problem becomes much easier if you recognize that all of the fractions include 
; for purposes of comparison, you can multiply each of the fractions by (23)(32) to simplify things. This leaves you with the following values: A=12, B=2, C=6, D=8, and E=3; A is the greatest value.