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Many of the world’s pollution problems have been caused by the crowding of large groups of people into the cities. Supply for the needs of the people leads to further pollution by industry. If the rapid increase of world population in countries continues at the present rate, there may be much greater harm to human beings. Some scientists speak of the increase in numbers of people as “population pollution.”
About 2,000 years ago, the world population was probably about 250 million. It reached a billion in 1850. By 1930 the population was two billion. It is now three and a half billion. It is expected to double by the year 2,000. If the population continues to grow at the same rate, there will be 25 billion in the world a hundred years from now.
Man has been using the earth’s resources more and more rapidly over the past years. Some of them are almost used up. Now many people believe that man’s greatest problem is how to control the growth of the population. The material supplies in the world will be far from enough to support the human population, in time to come, if the present rate of increase continues. Already there is overcrowding in many cities and starvation in some countries. Should man’s population keep on growing so rapidly as before? Many people believe that human survival in the future depends on the answer to this question.
59. The rapid increase in population is considered to be __________.
A. the increase of resources          B. population pollution
C. the development of mankind       D. the present rate
60. The world population will be _________ by the year 2,000.
A. 7 billion                  B. 250 million       C. 25 billion      D. 3.5 billion
61. If the present rate of increase continue, ________________.
A. the world is going to end
B. the earth won’t be able to support the growing population in the future
C. pollution has nothing to do with the rapidly increasing population
D. there would be four billion in the world a hundred years from now
62. Which of the following is WRONG according to the passage?
A. In 1850 the world population reached a billion.
B. Man must fight a battle against population pollution.
C. The world’s population is increasing with years.
D. All of the earth’s resources are gone now.

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       A.she was a little fighter against racism

       B.she was very young, short and timid

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       B.how Ruby won her fight to go to an all-white school

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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.

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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.

2.What is the major concern in the development of alternative energy according to the last two paragraphs?

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.

3.What is the author’s attitude towards building solar plants?

A.Disapproving.      B.Approving.         C.Doubtful.          D.Cautious.

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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

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