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名词解释题
城市人口机械增长率mechanical growth rate of population
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According to the passage, what helps to explain why the population problem has come on "all of a sudden"?A) The penny which doubles itself every day for one month.B) The time span of at least two million years in human history.C) An illustration of the exponential growth rate given by the author.D) The large amount of money you would luckily make after the fourth week.
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Which of the following statements is NOT true?A) World population is increasing at a rate of 150 per minute.B) Lower death rates also contribute to world population growth.C) The population of Columbia has been doubling every year for 21 years.D) The United States is usually doubling its population about every 87 years.
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A major source of population growth is（）AimmigrationBbaby boomCrising birth rateDlarger number of young people
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单选题We can conclude from the passage that Brazil’s economy ______.A
keeps growing with lower interest ratesB
is likely to grow by 4% in 2009C
is healthy though the growth rate was not as good as expectedD
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单选题In the 1970s Britain maintained the（）growth rate and the（）inflation rate among the developed countries.A
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highest/highestC
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单选题According to the author, the most effective way to decrease the rate of population growth is ______.A
by making it a national policy that each couple must not give birth to more than three childrenB
by exerting more international pressure upon those high-fertility regionsC
by modifying the widely held values which guide the actions of many individuals and couplesD
by providing the rural poor with means for limiting the family size
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