英语听力精选进阶版 16657（在线收听）

WBR: Wall Street Update 18 Dec 14

Thu, 18 Dec 14

Doug McIntyre at the financial website 24/7 Wall Street tells us why in points terms, the Dow had its biggest one-day gain for almost three years. Also on this update, could Africa's Kariba Dam on the Zambezi provide a blueprint for hydroelectric power around the world? Lucy Burton has been finding out.