Unit1Global warming may be the most harmful environmental problem 1)

have created,

and the most difficult to solve. Our society is largely 2)

warming. Its growing consequences ― ecological disruption, floods, droughts, disease ― are convincing

more and more people that we must cut down 3)

pollution.

Many people view global warming as a problem too large and too 4)

do to 5)

reduce it. However, in reality, there are lots of things we can do to stop, or at least to

☆ Plant a tree. Trees "6)

☆ Install low-flow shower heads and faucets. You'll use less than half the water without 7)

☆ Buy energy-efficient electronics and appliances. Then, turn them off when they're not in use.

☆ Reduce! Reuse! Recycle! Recycling a stack of newspapers only 8)

tree. ☆ Mount a local 9)

against global warming. Educate your community about how to cut

greenhouse gas pollution. Support measures at the national and local levels that increase energy

efficiency, and that 10)

the use of clean, renewable solar and wind technology.

Key:1. human beings; 2. powered; 3. greenhouse; 4. far away; 5. make a difference;

6. breathe in; 7. decreasing performance; 8. four inches high; 9. campaign; 10. encourage.

变暖可能是最有害的环境问题，人类创造的，也是最难解决。我们的社会是动力；由化石燃料导致全球变暖。越来越多

的后果―生态破坏，洪水，干旱，疾病―令人信服的人越来越多，我们必须削减远离污染。很多人认为全球变暖是一个

问题，太大，太远了，他们能做什么。有所作为，然而，在现实中，有很多事情我们可以做来阻止，或至少减少。植物

树。树木吸收二氧化碳，但只要他们生活。安装低流量的淋浴头和水龙头。你会用不到一半的水不降低性能。购买节能