新视野大学英语读写教程听力 第二册 unit02c_new

[07:01.63]but these cause another problem.
[07:05.99]They carry all of the water away.
[07:10.92]Not much water can sink into the holding areas under the ground.
[07:17.29]The once unlimited supply of fresh,clean water is now limited.
[07:25.25]Nature's recycling system is in danger.
[07:30.83]Because of water,Earth is a living planet.
[07:37.27]People can live here because of water.
[07:42.64]They build large dams to store water in huge man-made lakes.
[07:50.20]The water in these lakes can water farmland and provide water for cities.
[07:57.94]Water from the dams can make electricity,
[08:03.48]called hydroelectricity since it is made from water power.
[08:10.54]These hydroelectric projects produce electricity
[08:16.98]for the people of nearby cities and towns.
[08:22.02]However,these dams also cause problems.
[08:28.18]In some places,the holding areas behind the dams
[08:33.76]have destroyed the environment for animals,birds,and plants.
[08:39.80]One thing is certain--the balance of nature on this water planet is easily upset.
[08:48.44]And upsetting the natural water cycle on Earth
[08:54.31]makes significant problems for its inhabitants.
[08:59.75]All of us share these problems.
[09:04.82]Water gives life to our planet.
[09:10.26]We must learn to live in balance with nature,or our shining planet Earth will die.