As investors worried about slowing global economic recovery, energy consumption, international oil prices fell slightly on 23.

        The day of the Chicago Federal Reserve Bank data show that in July the U.S. economic recovery have improved, the national (economic) activity index rose from June's negative to zero.

        However, market investors worried about a slowdown in global economic recovery has not been eliminated. With the U.S. dollar against the euro, the international oil prices continue to fall.

        To the closing, the New York Mercantile Exchange, light crude oil for delivery in October futures fell 72 cents to close at 73.10 U.S. dollars a barrel. London Brent crude fell 64 cents to close at 73.62 U.S. dollars a barrel. (Chen Gang)