In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural
36 seemed to be unlimited.
Today things are
37 . The world has become too
38 . We are
39 our natural resources too quickly, and at the same time we are
40 our environment with dangerous chemicals. If we
41 to do this, human life on earth will not
42 .
People realize today that if too many
43 are taken from the sea, there will soon be none left. Yet, with modern fishing
44 , more and more fish are caught.
We know that if too many trees are cut down,
45 will disappear and nothing will
46 on the land. Yet, we continue to use bigger and more powerful machines to
47 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die.
48 , in most countries waste products are still put into rivers or into the sea, and there are few laws to
49 this.
We also know that if the
50 of the world continues to rise at the present rate, in a few years, there won't be enough food. What can we do to solve the
51 ? If we eat more vegetables and less
52 , there will be more food available for everyone. Land that is used to grow crops feeds five times more people than land where animals are kept.
Our natural resources will
53 longer if we learn to recycle them. The world population will not
54 so quickly if people use modern methods of birth control.
Finally, if we
55 people to think about the problems we shall have a better and cleaner planet in the future.
| 小题1: | | A．resources | B．sources | C．materials | D．matter |
|
| 小题2: | | A．common | B．the same | C．changeable | D．different |
|
| 小题3: | | A．crowded | B．polluted | C．dirty | D．busy |
|
| 小题4: | | A．producing | B．using up | C．reducing | D．making |
|
| 小题5: | | A．protecting | B．saving | C．polluting | D．fighting |
|
| 小题6: | | A．try | B．continue | C．stop | D．have |
|
| 小题7: | | A．live | B．last | C．continue | D．survive |
|
| 小题8: | | A．fish | B．seagulls | C．crocodiles | D．frogs |
|
| 小题9: | | A．poles | B．boats | C．methods | D．ideas |
|
| 小题10: | | A．mountains | B．the sea | C．crops | D．forests |
|
| 小题11: | | A．grow | B．plant | C．save | D．cut down |
|
| 小题12: | | A．plant | B．cut down | C．save | D．burn down |
|
| 小题13: | | A．Thus | B．However | C．Generally speaking | D．Therefore |
|
| 小题14: | | A．encourage | B．neglect | C．stop | D．wake up |
|
| 小题15: | | A．production | B．pollution | C．population | D．revolution |
|
| 小题16: | | A．pollution | B．environment | C．questions | D．problems |
|
| 小题17: | | A．fruit | B．meat | C．fish | D．grain |
|
| 小题20: | | A．force | B．help | C．educate | D．show |
|