I change the last sentence to:


所有跟贴·加跟贴·新语丝读书论坛http://www.xys.org/cgi-bin/mainpage.pl

送交者: skipper3 于 2005-4-13, 13:54:35:

回答: You can borrow real option theory to explain this. 由 skipper3 于 2005-4-13, 13:45:53:

the difference between rich and poor is not as big as what appears on paper.


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