lzsywk,ielts进来解释一下
qxj 2004-03-04 12:53:08 http://expert.csdn.net/Expert/TopicView2.asp?id=2635097&datebasetype=now
http://expert.csdn.net/Expert/TopicView2.asp?id=2694322&datebasetype=now
http://expert.csdn.net/Expert/topic/2512/2512983.xml?temp=.3055841
http://expert.csdn.net/Expert/TopicView2.asp?id=2455655&datebasetype=now
http://expert.csdn.net/Expert/TopicView2.asp?id=2530540&datebasetype=now
给一个合理的解释,