for your reference:

http://gmatclub.com/forum/sc-employee-s-unwillingness-49098.html

所有跟帖： 

• 谢谢,竟然这都被你搜出来了.... -陶陶乐,乐陶陶- ♀ (0 bytes) () 01/15/2010 postreply 20:57:09

• btw, 那道概略题目，正确答案是：a／(a+b) -戏雨飞鹰- ♀ (0 bytes) () 01/15/2010 postreply 21:04:07

• here is the link for you. -戏雨飞鹰- ♀ (62 bytes) () 01/15/2010 postreply 21:06:12