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2. 你能告诉我火星上的重力是否只有地球上的八分之三吗?

Can you tell me if the gravity on Mars is only on the Earth?

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This week,our topic is pollution. What are the answers to all of our pollution problems? We asked two experts to give their views.

Forest Smith is a member of Green First,an environmental group.

Our future on the Earth looks very bad. We are dumping waste on our land. We can’t breathe the fresh air. The sea is polluted too.

I visited some relatives recently in a small village. They grow their own food and cycle everywhere. They are not wealthy,but they are happy and healthy.

We must close the factories producing useless products. That will reduce rubbish and air pollution. We must recycle more,give up all cars and improve public transport.

A big problem is overpopulation in big cities. We must give up big cities and factories and go back to a simple way of life.

John Green is a scientist at a university.

Things are not as bad as Forest says. We’ll have a bright future. We don't need to give up cars but we need to invent better,cleaner engines.

This won’t stop the problem of traffic jams. So we need better public transport. We should also recycle more.

But some things are getting better. My sister returned last month after living abroad for five years. She said ,“Our old neighbourhood doesn’t look the same as before —it is cleaner and greener now.99

In a word,science has brought many improvements to our life.

根据短文内容,完成下面的表格。

Forest Smith : A member
  of an 1. group

Our future on the
  Earth looks bad.

The waste 2. on our land

 The 3. sea

The air we can’t 4. in
The large population in big   cities


What we can do

 5. some factories will reduce rubbish   and air pollution.

 We must recycle more and make public transport 6. .


Conclusion: We must go back to a simple way of life.


John Green: A 7.

We still have a
  8. future.

Better and cleaner engines are   9. beczuse we can't give up cars.
We also need better transport   and to recycle more.


at a university


Conclusion: Life has been 10. a lot.




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() 6. — Will the journey to Mars be?

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6. A  (strange) brought you this letter during your absence.

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(C) Why do we like drinking water from plastic bottles? Some people think it is healthy and clean. Others drink bottled water because it’s easy —you can carry it around with you.

In hot countries,likeGreece,we often buy bottles of cold water in summer.

However,making lots of plastic is not a good idea for many reasons. First of all,we need a lot of oil for plastic products. We usually use oil as a ^source of energy. If we reduced the number of bottles we made,we wouldn’t need so much oil. Plastic bottles also pollute the environment. If we recycled all our plastic bottles,we wouldn’t need so much space for rubbish dumps. But in Greece,we don't recycle much of the plastic we use. In 2006,Greeks recycled only about 10% of plastic waste. The rest became rubbish on land and in rivers and seas.

So next time you want to throw away a plastic bottle in the litter bin,stop and think. If you recycled it,you would help the environment. But what can you do when there isn’t a recycling bin near you? Well,there are lots of useful ways that you can use your bottles again. For example,an empty bottle makes a great piggy bank for your pocket money,and if you cut a bottle in half,you will have a plant pot. Go green!You can make a difference.

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