英语听力：自然百科 圣河之旅 The Nile尼罗河—13（在线收听）

 Officials here say this dam will help to lift the country out of poverty. It’s a persuasive argument, but economic development here as it does everywhere, comes at a moral and ethic cost. Behind the dam, a vast track of wilderness will be submerged under a huge reservoir and local tribes will be displaced from their traditional lands. I can see the benefits of development, but still I find myself torn. ***, quite emotionalized you can see the communities like this down here. Their whole world of life is going to change. Less than a 5th of people here have access to electricity. By damming the Nile, Ethiopia could become Africa’s biggest supplier, providing much needed power for homeS, schools, factories and hospitals. Ethiopia is not alone in wanting a great share of this life changing river. I followed the Blue Nile north to the flat arid landscape of Sudan. Here, temperature can reach 50 degrees Celsius. Yet even in this parched country. A remarkable transformation is taking place along the river. Blessed with the longest stretch of the Nile than any other countries, Sudan is using its waters to turn it into desert green.