题目内容
Many of the world’s pollution problems have been caused by the crowding of large groups of people into the cities. To supply for the needs of the people 1 further pollution by industry. 2__ the rapid increase 3 human pollution continues at the present rate, there may be 4 greater harm. Some scientists speak of the increase in the number of people 5 “population pollution.”About 2,000 years 6 , the world population was probably about 250 million. It 7 a billion in 1850. By 1930 the population 8 two billion. It is now over three and a half billion. It 9 to double by the year 2008. If the population continues to grow at 10 rate, there 11 twenty-five billion people in the world a hundred years 12 now!
Man has been using the earth’s resources 13 rapidly over the years. Some of them are almost 14 . Now many people believe that man’s greatest problem is 15 the growth of his own population. The materials in the world will not support the human 16 , in time to come, if the 17 rate of increase continues. Already there is overcrowding in the cities and 18 in some countries. Can man’s increase rate ____19____? Many people believe that human survival in the future 20 the answer to this question.
1. A. causing B. leads to C. resulted D. brings out
2. A. Whether B. If C. Unless D. And
3. A. in B. on C. at D. by
4. A. many B. much C .more D. most
5. A. like B. to C. as D. for
6. A. passed B. past C. before D. ago
7. A. reached B. got C. arrived D. went
8. A. is B. are C. was D. were
9. A. is said B. is expected C. is planned D. is arranged
10. &nbstp; A. same B. a same C. the same D. one same
11. A. will have B. will live C. would be D. might get
12. A. by B. from C. at D. to
13. A. more and more B. more or less
C. little by little D. sooner or later
14. A. useful B. harmful C. lost D. going
15. A. how to enlarge B. how to raise
C. how to control D. how to make
16. A. population B. growth C. survival D. needs
17. A. present B. yesterday C. today D. past
18. A. hungry B. hunger C. hungrily D. hungers
19. A. raise B. continue C. over D. up
20. A. goes on B. pushes on C. puts on D. depends on
解析：
| 1.
lead
to导致。
2. if引导条件状语从句，如果…。 3. 如果人类污染的速度继续以现在的快速增长的话…。 4. much修饰后面的比较级greater。 5. 有些科学家把人口增长称作 “人口污染” 。 6. 大约2000年以前。 7. reach达到。 8. population人口做主语，谓语用单数。 9. it is expected…预计…。 10. the same固定搭配。 11. would be 表示对将来的推测。 12. a hundred years from now一百年以后。 13. more and more越来越…。 14. lost失去的。 15. 如何控制人口增长问题。 16. needs需求。 17. present目前的，现在的。 18. hunger |
提示：
新课标阶梯阅读训练系列答案As the railroads and the highways shaped the American West in the past centuries, a new electrical generating(发电)and transmission (输送) system for the 21st century will leave a lasting mark on the West, for better or worse. Much of the real significance of railroads and highways is not in their direct physical effect on the scenery, but in the ways that they affect the surrounding community. The same is true of big solar plants and the power lines that will be laid down to move electricity around.
The 19 th century saw land grants(政府拨地) offered to railroad companies to build the transcontinental railroads, leaving public land in between privately owned land. In much of the West, some of the railroad sections were developed while others remained undeveloped, and in both cases the landownership has presented unique challenges to land management. With the completion of the interstate highway system, many of the small towns, which sprang up as railway stops and developed well, have lost their lifeblood and died.
Big solar plants and their power lines will also have effects far beyond their direct footprint in the West. This is not an argument against building them. We need alternative energy badly, and to really take advantage of it we need to be able to move electricity around far more readily than we can now.
So trade-offs will have to be made. Some scenic spots will be sacrificed. Some species(物种) will be forced to move, or will be carefully moved to special accommodations. Deals will be struck to reduce the immediate effects.
The lasting effects of these trade-offs are another matter. The 21st century development of the American West as an ideal place for alternative energy is going to throw off a lot of power and money in the region. There are chances for that power and money to do a lot of good. But it is just as likely that they will be spent wastefully and will leave new problems behind, just like the railroads and the highways.
The money set aside in negotiated trade-offs and the institutions that control it will shape the West far beyond the immediate footprint of power plants and transmission lines. So let’s remember the effects of the railroads and the highways as we construct these new power plants in the West.
【小题1】What was the problem caused by the construction of the railways?
| A．Small towns along the railways became abandoned. |
| B．Land in the West was hard to manage. |
| C．Some railroad stops remained underused. |
| D．Land grants went into private hands. |
| A．The use of money and power. |
| B．The transmission of power. |
| C．The conservation of solar energy. |
| D．The selection of an ideal place. |
| A．Disapproving. | B．Approving. | C．Doubtful. | D．Cautious. |
| A．How the Railways Have Affected the West |
| B．How the Effects of Power Plants Can Be Reduced |
| C．How Solar Energy Could Reshape the West |
| D．How the Problems of the Highways Have Been Settled |
As the railroads and the highways shaped the American West in the past centuries, a new electrical generating(发电)and transmission (输送) system for the 21st century will leave a lasting mark on the West, for better or worse. Much of the real significance of railroads and highways is not in their direct physical effect on the scenery, but in the ways that they affect the surrounding community. The same is true of big solar plants and the power lines that will be laid down to move electricity around.
The 19 th century saw land grants(政府拨地) offered to railroad companies to build the transcontinental railroads, leaving public land in between privately owned land. In much of the West, some of the railroad sections were developed while others remained undeveloped, and in both cases the landownership has presented unique challenges to land management. With the completion of the interstate highway system, many of the small towns, which sprang up as railway stops and developed well, have lost their lifeblood and died.
Big solar plants and their power lines will also have effects far beyond their direct footprint in the West. This is not an argument against building them. We need alternative energy badly, and to really take advantage of it we need to be able to move electricity around far more readily than we can now.
So trade-offs will have to be made. Some scenic spots will be sacrificed. Some species(物种) will be forced to move, or will be carefully moved to special accommodations. Deals will be struck to reduce the immediate effects.
The lasting effects of these trade-offs are another matter. The 21st century development of the American West as an ideal place for alternative energy is going to throw off a lot of power and money in the region. There are chances for that power and money to do a lot of good. But it is just as likely that they will be spent wastefully and will leave new problems behind, just like the railroads and the highways.
The money set aside in negotiated trade-offs and the institutions that control it will shape the West far beyond the immediate footprint of power plants and transmission lines. So let’s remember the effects of the railroads and the highways as we construct these new power plants in the West.
【小题1】What was the problem caused by the construction of the railways?
| A．Small towns along the railways became abandoned. |
| B．Land in the West was hard to manage. |
| C．Some railroad stops remained underused. |
| D．Land grants went into private hands. |
| A．The use of money and power. |
| B．The transmission of power. |
| C．The conservation of solar energy. |
| D．The selection of an ideal place. |
| A．Disapproving. | B．Approving. | C．Doubtful. | D．Cautious. |
| A．How the Railways Have Affected the West |
| B．How the Effects of Power Plants Can Be Reduced |
| C．How Solar Energy Could Reshape the West |
| D．How the Problems of the Highways Have Been Settled |