They know each other like the right hand knows the left, mirror-
image adversaries with only the jerseys on their backs to tell
them apart.  There are no secrets between them. No tricks up
their sleeves. No stones left unturned.  If Team USA vs. Team
Canada in women's hockey isn't the best rivalry in sports, it's
at least in the conversation. There have been 15 world
championships for women, and 15 times these two teams have met
in the final. There have been four gold medal games at the
Olympics, and three times it was USA vs. Canada.  On Thursday
night, at the Bolshoy Ice Dome, they'll do it again.  "We feel
like we've prepared all year for this game," said Natalie
Spooner, who scored twice Monday in a 3-1 win against
Switzerland to put Canada in the Olympic final.  Earlier, the
Americans peppered Sweden's goalies for 60 minutes in a 6-1
victory.  "It's not the U.S. and Canada's fault that they are
good," Swedish coach Leif Boork said with a shrug. "I think they
should go on being good so we have something to