http://reply.papertrans.cn/3/294/29355/29355-31.png
http://reply.papertrans.cn/3/294/29355/29355-32.png
http://reply.papertrans.cn/3/294/29355/29355-33.png
Submitted on: 28 January 2005.
Revised on: 09 February 2005.
Accepted on: 07 March 2005.
THEATER---DUKE UNIV PRESS
http://reply.papertrans.cn/3/294/29355/29355-35.png
http://reply.papertrans.cn/3/294/29355/29355-36.png