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     Within fifteen years Britain and other nations should be well on with the building of huge industrial

complexes for the recycling of waste. The word rubbish could lose its meaning because everything that goes

into the dumps would be made into something useful. Even the most dangerous and unpleasant wastes would

provide energy if nothing else.

     The latest project is to take a city of around half a million inhabitants and discover exactly what raw

materials go into it what go out. The aim is to find out how much of these raw materials could be provided if

a plant for recycling wastes were built just outside the city. This plant would recycle not only metal such as

steel and copper, but also paper and rubber as well.

     Another new project is being set up to discover the best ways of sorting and separating the rubbish. When

this project is complete, the rubbish will be processed like this: first it will pass through metal bars which will

tear open the plastic bags in which rubbish is usually packed; then it will pass through a powerful fan to

separate the lightest elements from the heavy solids; after that grounders and rollers break everything that can

be broken. Finally the rubbish will pass under magnets, which will remove the bits of iron and steel; the rubbish and plastic will then be sorted out in the stage.

     The first full-scale giant recycling plants are, perhaps fifteen years away. Indeed, with the growing cost of

transporting rubbish to more distant dumps, some big cities will be forced to build their own recycling plants

before long.

1.  The main purpose of the passage is to _____.

A. show us a future way of recycling wastes

B. tell the importance of recycling plants

C. warn people the danger of some wastes

D. introduce a new recycling plant

2.  How many stages are there in the recycling process?

A. 3

B. 4

C. 5

D. 6

3. What is the main reason for big cities to build their recycling plants?

A. To deal with wastes in a better way.

B. It's a good way to gain profits.

C. It's more economical than to dump wastes in some distant places.

D. Energy can be got at a low price.

4. The first full-scale huge recycling plant _____.

A. have been in existence for 15 years

B. take 15 years to build

C. can't be built until 15 years later

D. will remain functioning for 15 years

5. Which of the following statements is TRUE?

A. the word"rubbish" will soon disappear from dictionaries.

B. dangerous wastes can be recycled into nothing but energy.

C. To recycle paper and rubber will still be impossible even with the new recycling methods.

D. Big cities will soon have their own recycling plants.