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

Within fifteen years Britain and other nations should be well on with the building of huge industrial complexes (结合)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 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.
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 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 grounders and rollers break up everything that can be broken. Finally the rubbish will pass under magnets, 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.
1. The main purpose of the passage is .
A. to show us a future way of recycling wastes B. to tell the importance of recycling wastes
C. to warn people the danger of some wastes D. to 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 own 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 lower price.
4. The first full-scale huge recycling plants .
A. have been in existence for 15 years B. takes 15 years to build
C. can’t be built until 15 years later D. will remain functioning for 15 years1-4 ABCC

(答案→)1-4 ABCC 解析：1. 推理题。从第一段的Within fifteen years以及下面两段所描述的为将来的处理工厂所做的两项工程可知。2. 推断题。本题的答案在第三段，只要把握作者叙述的 first… then... after that... Finally... 即可推出。3. 细节题。由最后一句可知。4. 细节题。由最后一段The first full-scale giant recycling plants are，perhaps，fifteen years away可知。

对的，就是这个意思