本文主要内容公共英语三级考试阅读理解真题练习:人口增长率。更多公共英语三级考试试题,请关注“公共英语三级真题”栏目。
公共英语三级考试阅读理解真题练习:人口增长率
A new report of the United Nations shows that, if the present growth rate of 2 percent per year continues, today's world population of 5. 1 will hit 6.4 billion by the year 2000.
What's more, the great part of the growth ——— 9 of every 10 p~ added to the earth's population ——— will be in the poor and undeveloped countries. These are the nations where providing enough food for billions of people already is proving to be a headaching problem.
By the year 2000,today's have not nations will have a total population of 5 billion people, nearly four fifths of the world's population.
Food isn't the only problem that such a population explosion presents. The more people there are and the worse their living conditions, the greater grow the possibility of all kinds of social problems.
In 1830, world population reached 1 billion. It took only 100 more years to add another billion to world population just 30 more to add a third billion. And it took just 15 more years to reach the 4 billion mark in 1975.
Actually, the world's birth rate is falling. But so is death rate, as medical advances have made it possible for man to live longer than before. Such advances have also reduced baby death rate. Unless population growth is reduced, the world population may reach 12 billion in a century. Is the earth capable of providing a good life for so large a population?
1. A population explosion will lead to _________._______
A. a lot of social problems
B. medical advances
C. a decrease in food production
D. a worse life in every country
2. It took _______year for world population to grow form 1 billion to 3 billion.
A. 100
B. 115
C. 130
D. 145
3. By the year 2000, today's ____ nations will have a total population of 5 billion people, nearly four fifths of the world's population.
A. biggest
B. Asian
C. developing
D. developed
4. ________, the world may have a population of 12 billion in a century.
A. If man can live longer in the future
B. If the science of medicine is developing fast enough
C. If the population growth is not reduced
D. If the earth is able to provide a good life for more people
5. This passage tells us that _________
A. the United Nations thinks it possible to avoid a population explosion
B. 5. 1 billion people are living in the undeveloped countries
C. in advanced nations the population growth is being controlled
D. the world's population is increasing
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