The first paragraph is very good; I totally agree :)
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: gordon 于 2006-3-07, 14:55:39:
回答: Not only upward mobility, but also efficiency. 由 mangolasi 于 2006-3-07, 11:55:10:
所有跟贴:
加跟贴
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