研究生英语视听说2 furtherlistening1+2原文.doc

Further Listening 1 Our demand for fossil fuels such as oil and natural gas is growing. This growing need for energy causes us to burn more and more fossil fuels. Burning fossil fuels such as coal puts carbon into the air. Carbon dioxide, or CO2, and other gases reduce the amount of heat that goes out into space. When less heat goes out into space, it means that more heat stays in the earth’s atmosphere. When more heat stays in the earth’s atmosphere, the average temperature increases, making it warmer. A significantly higher average temperature leads to climate change and changes to the weather. Climate change can have a negative impact on people’s lives. For example, climate change can make it difficult to grow food in some places. People are starting to conserve energy by making changes that cause them to use less fuel. For example, people are buying smaller cars. Smaller cars are more efficient because they use less gas and oil. Further Listening 2 Scientists believe that the earth’s temperature is increasing. They believe this increase in temperature is having a negative impact on our environment. You might think that protecting the planet is too big a job for you, but it isn’t. There are many small and practical ways you can conserve energy and help protect the environment. Here are some helpful tips. Cut back on driving by taking public transportation or walking more often. You will save a lot of gas if you drive to work two or three days a week instead of five! Shop at local stores close to your home. You will drive less, so you can spend less money on gas and more money on food. Turn off lights and electronics when you aren’t using them so you don’t waste electricity. Replace your old appliances like refrigerators and dishwashers with new, efficient models. Old appliances consume more energy than new ones. Keep track of the electricity and gas you use and how you use it. Write down the different activities you do that use gas or electricity and how ofte