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hellacool (春风再美) 于 (Fri Nov 7 22:24:00 2008) 提到:
在Obama的网站上，有这么一段 http://change.gov/americaserves/
Obama will call on citizens of all ages to serve America, by developing a
plan to require 50 hours of community service in middle school。。。
今天上午，经济学家Mankiw的blog上引了这一段，
下午，这一段就变成了
Obama will call on citizens of all ages to serve America, by setting a goal
that all middle school and high school students do 50 hours of community
service a year
require变成了se
