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The latest project is to take a city of around half a million inhabitants and discover exactly what raw materials go into it and what go out．The aim is to find out how much of these raw materials could be provided if a plant for recycling waste were built just outside the city．This plant would recycle not only metal such as steel，lead and copper，but also paper and rubber as well．
Another new project is being setup 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 sharp 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 founders and rollers will break up everything that can be broken．Finally，the rubbish will pass under magnets（磁铁），which will remove the bits of iron and steel；the rubber and plastic will then be sorted out in the final 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．
61．The phrase"should be well on with..."（Para．1）most probably means _______ ．
A）have completed what was started
B）get ready to start
C）have achieved a great deal in
D）put an end to
62．What is NOT mentioned as a part of the recycling process described in paragraph 3？
A）Breaking up whatever is breakable．
B）Sharpening metal bars．
C）Separating light elements from the heavy ones．
D）Sorting out small pieces of metal．
63．What's the main reason for big cities to build their own recycling plants？
A）To deal with wastes in a better way．
B）To protect the environment from pollution．
C）To get raw materials locally．
D）To get big profits from those plants．
64．The first full-scale huge recycling plants _______ ．
A）began to operate fifteen years ago
B）will probably take less than fifteen years to build
C）will be built fifteen years later
D）will probably be in operation in fifteen years
65．The passage is mainly about _______ ．
A）a cheap way to get energy
B）the location of recycling plants
C）new ways of recycling wastes
D）the probability of city environment
Passage Four
Questions 66to 70are based on the following passage：
Do you remember last summer，when furious travelers were pounding on Congress to do something about airline customer service？Airlines promised to improve，and they adopted new standards just before Christmas．But as another summer nears，plenty of experienced travelers don't see much improvement in customer service overall．
This month，the Department of Transportation's（DOT）inspector general's office will issue its first critical article on whether airlines are honoring their promises．One survey suggests problems：The number of complaints to the DOT about the top 10 airlines in the first quarter soared 89％from a year ago． |
