for your reference:

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

所有跟帖： 

• 謝謝,竟然這都被你搜出來了.... -陶陶樂,樂陶陶- ♀ (0 bytes) () 01/15/2010 postreply 20:57:09

• btw, 那道概略題目，正確答案是：a／(a+b) -戲雨飛鷹- ♀ (0 bytes) () 01/15/2010 postreply 21:04:07

• here is the link for you. -戲雨飛鷹- ♀ (62 bytes) () 01/15/2010 postreply 21:06:12