北师大版（2019）必修3《Unit 8 Green Living》2021年同步练习卷（板块二）

Ⅰ.七选五

• 1．Some years back，nobody paid much attention to the waste in homes and landfills.It became so vast that the government started getting concerned the phenomenon could create a disaster.A solution had to be found，but one that is kind to humans and the environment.（1）

  .Below are the reasons why we need to recycle.
     Conserve natural resources
     （2）

  .If a lot of pressure is put on these natural resources，they might be run out of fast.The only way to stop the pressure applied to these resources is recycling.According to the United States Environmental Protection Agency，recycling one ton of paper saves up about 17 trees as well as 7 tons of water.
     Reduce carbon emissions
     Recycling greatly minimizes carbon emissions，commonly referred to as greenhouse gases.（3）

  ，they would end up being burned，giving out dangerous greenhouse gases.Whatever your opinion on global warming，a lot of people agree to the idea that everyone needs to play a role in minimizing the effects of pollution and emissions.
     （4）

  
     Recycling has been proved to save up lots of energy.Companies that use recycled aluminum save up to 95% energy during production of aluminum products when compared to companies that source raw materials.
     One person can make a big difference
     Most people have already made up their minds that one person cannot make any difference in regard to recycling waste.That thinking might apply in other fields.In recycling，an individual can make a big difference.Averagely，every American produces about 1，600 pounds of waste every year.Up to 1，100 pounds of waste is able to be recycled every year per person.（5）

  .
  
  A.Save energy
  B.Protect the environment
  C.That's how recycling was born
  D.If these wastes were not recycled
  E.That represents half a ton per individual
  F.Many kinds of resources are considered limited
  G.You and your neighbor's effort to recycle will mean clean surrounding air
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