Recycling Resources
Increased population increases the need for natural resources and also increases waste products．Making a new useful product out of a waste product decreases（减少）our need for natural resources．Recycling means using something over again after it has been used once．
Have you ever seen a piece of recycled paper？About one third of all the paper products made each year are made from waste paper．For example，recycled paper is usually used to make paper sacks．Recycling paper，such as newspapers，reduces the number of trees that must be cut each year to make new paper．
Each person wastes a lot of solidwaste．In the United States，the average is eight kilograms of waste per person each day．Most of the waste is garbage and rubbish．Finding places to dispose（处理）of solid wastes is a major problem ．
In many cities solid wastes are collected and the rubbish is burned in incinerator plants（焚化场）．Air pollution control devices are used to prevent pollution．Heat produced in the burning may be used to generate electricity．Waste that is not burned is taken to a dump．One kind of dump for the disposal of solid wastes is a sanitary landfill（废渣处理法）．This method involves（包含）burying the wastes and bulldozing（平整）soil over them ．Parks，baseball fields， airports，and other developments may be built on completely filled landfills．
Recycling solid wastes decreases our need for methods of disposal．The metal in broken cars can be recycled and made into new steel．Worn-out rubber tires can be turned into new ones and used again．Plastics and other rubber products can be recycled．Metal cans and glass bottles can also be recycled．Increased recycling can help meet the increased demand for natural resources．
By recycling resources，people imitate（模仿）nature．Elements important to life are naturally recycled．Nothing lasts forever．Wood decays（腐烂），iron rusts（生锈），and concrete（混凝土）is worn away by wind and rain．All natural resources used by people eventually（最终）go back into the air，water，and earth．
（Words：337 Minutes：5．5）
1．What is the main cause of the increased waste，according to the passage？
A．Expansion of cities．
B．Development of the papermaking industry．
C．Increased population．
D．Lack of recycling methods．
2．According to the passage，recycling paper is important because _________．
A．better paper sacks can be made out of waste paper
B．the prices of new paper are very high
C．trees are no longer available in the developed countries
D．more trees on earth can be saved
3．A big problem of solid waste disposal is that _________．
A．solid wastes are poisonous
B．it is difficult to find places to dispose of solid wastes
C．the disposal process is too backward
D．we don't have enough manpower to dispose of solid wastes
4．Which of the following can NOT be called recycling？
A．Making new paper from used paper．
B．Using worn-out rubber tires to make new ones．
C．Burying metal cans and glass bottles．
D．Producing new steel from metal in broken cars．
5．What is the writer's attitude towards recycling？
A．The writer thinks that recycling is necessary and important．
B．The writer thinks it no use recycling．
C．The writer doubts whether recycling is useful to people．
D．The writer thinks that it is a waste of time and money recycling．
答案讲解与说明：
1．C。根据文章的第一句话，人口的增长增加了废弃物。因此，这是导致废弃物增多的一个主要原因。
2．D。根据第二段最后一句话，“纸的再生可以减少每年树木的砍伐。”
3．B。根据第三段最后一句话，“找地方来处理固体废物是个大问题”。
4．C。从“recycling”字面理解为循环再利用，即将一种东西制为新的东西再加利用。其余三个选项全符合，但选项C只是把金属罐、玻璃瓶埋在地下，并不能产生新的可再利用的东西。
5．A。作者在文中介绍了许多再生对人类有益的方面，且认为再生不会造成对环境的危害，因此态度是积极的。
