2. This will make me feel thirsty.

 

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10. 樹木可以減少灰塵，并且有助于保持空氣干凈。

Trees  and help .

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7. Li Ming always does the homework carefully.

 

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    I'ts very important that we all recycle. In nature,ever) r-thing is used again. For example,when an animal dies,it becomes a 1  animal's food. Nothing is w 2  But humans have created things like plastic bags which can't be broken down by nature. Our rubbish kills animals and p 3   water and soil. If we c 4   making too much rubbish,the problem will only get w 5   If nature can't reuse the rubbish,we must recycle i 6   We should clean up the rubbish weVe made because nature can't.

   Recycling is a 7   the right thing to do for another reason. The Earth is r 8   in natural materials like water and trees,b 9  these materials are not endless. We use up our natural materials much faster than the Earth is able to reproduce them. For example,each year we cut down more than 6 ,000 square miles of forest. But it t 10  about 25 years for a new tree to grow.

    Recycling can help US save the Earth,so let5s take action right now.

1.   2.   3.   4.   5.  

6.   7.   8.   9.   10.  

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8. We won have a clear sky if air pollution is not

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    In common with many countries,Britain has serious environmental problems.In 1952,more than 4,000 people died in London because of the smog. The government introduced new laws to stop smog from coal fires and facto ries and the situation improved a lot.

    Today,London is much cleaner but there is a new problem：smog from cars. In December 1991,there was very little wind in London and pollution increased a lot. As a re- sult,about 160 people died from pollution in just four days.  

   Part of the problem is the new “out of town” shopping centres. In the past,people often walked to shops near their home or went by bus. Now,many people drive to the new shopping centres. As a result,the small shops have disappeared and more people have to travel to do their shopping.

   Critics say that Britain needs better and cheaper public transport. Transport in Britain is very expensive. An early morning train trip from Glasgow to London ( about 600km ) v can cost about £ 100,for example. A short 15-minute bus trip can cost over £ 1. 00. 

   Many people are trying to reduce the use of cars in Britain. Some cities now have special bicycle paths and many people cycle to work. Some people also travel to work together in one car to reduce the pollution and the cost.

Environmental 31  in Britain 

Time

Causes

32 

Solutions

In the 33 

Smog 34  coal

35 4,000

New laws were 36  .

fires and facto?ries

people died in 1952.

Today

Smog caused by 37 

About 160 people 38 

★ Provide better and 39  public transport.

★ Build special paths for bicycles.

★ Travel to work 40  in one car.

in a few days in 1991.

31.   32.   33.   34.   35.  

36.   37.   38.   39.   40.  

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