Update 2010-04-18-think-sas-1.md (#75)
Update 2010-04-18-think-sas-1.md (#75)

* Update 2010-04-18-think-sas-1.md

* Update 2010-04-18-think-sas-1.md

fyears/cosx.org,cosname/cosx.org,yixuan/cosx.org,yixuan/cosx.org,JianqiaoWang/cosx.org,JianqiaoWang/cosx.org,cosname/cosx.org,Lchiffon/cosx.org,fyears/cosx.org,fyears/cosx.org,tomatoiscoding/cosx.org,hetong007/cosx.org,tomatoiscoding/cosx.org,yixuan/cosx.org,hetong007/cosx.org,cosname/cosx.org,tomatoiscoding/cosx.org,hetong007/cosx.org,Lchiffon/cosx.org,Lchiffon/cosx.org,JianqiaoWang/cosx.org