Unit 3 The environment
第28页 Reading
A1-8 fdcg  bahe
B 略
第30页 C1 将事件与发生的时间配对
  1-5 ecdba
C2 1.Because fires and logging destroyed the forest over time
  2.Living conditions, extremely low temperature in the area,strong winds and sandstorms
  3.It's never too early to protect our environment.     略
D1  D2 略
第32页 Vocabulary and grammar
A 1-6 destroying, result in, greenhouse effect, in danger, recycle, taking action
B 2-5 the same, the same pocket money as, like, different from mine
第34页 More reading
A 1-5 bcbba
第35页 完形填空
1-8 daac   bcab
第37页 C1 读短文，完成表格
 1.terrible
 2.close down
 3.We must recycle more
 4. give up all cars 
 5. improve public transport
 6. simp way of life
 7. bright future
 8. invent better,cleaner cars that don't pollute the environment
 9. better public transport
 10 better life
C2  略
第39页 Writing
   celebrated on 22 April every year by people around the world. It was started in 1970 as a way to show support for protecting the environment. Over 20 million people took part in the first Earth Day activities. Since then, Earth Day has spread all over the world.
   People do their own part in protecting the environment. They teach others to learn more about how to protect the environment and raise money for the environmental organizations. Many governments and organizations arrange events on this day.
   do a lot to help protect the environment. When we go shopping,we can use our own shopping bags. It can save money, it is also friendly to the environment. Turn off the lights when we leave a room. To save water, turn off the tap when brushing teeth. It's a good habit to use both sides of the paper. 
 In addition, we can reduce air pollution by using public transport.(深圳家教网站提供)