The Chinese government chose to answer some questions (though not others) submitted by the Wall Street Journal and the Washington Post, ahead of the visit by Chinese President Hu Jintao to the U.S.. The first paragraph of Hu Jintao's response to Question 4 could turn out to be historically important."Q: What do you think will be the U.S. dollar's future role in the world? How do you see the issue of making the RMB an international currency? Some think that RMB appreciation may curb China's infla...