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The rapid growth of the world's population in the twentieth
century has been on a scale without parallel in human history. Most of this growth has taken
place since 1950 and is known, as the population explosion. Between 1950 and 1980 the world
population went up from 2.5 to over 4 billion, and by the end of the century this figure will
have risen to at least 6 billion. Growth of this size cannot carry on indefinitely. Recent forecasts
suggest that the total population will remain steady between 10 and 15 billion in the mid
twenty-first century. Already there are encouraging signs that the rate of rise in many
underdeveloped countries is beginning to slow down.
10. In accordance with the passage, at no period in human history has there been ............. . .
a) a sharp decrease in population like the one since 1980
b) so much consensus among nations concerning the population of the world
c) a universal fear about the future of human beings.
d) a population explosion of the magnitude of the one in this century
11. It is stated in the passage that the increase in the world population ............. .
a) is expected to continue even faster until 1950
b) is a highly encouraging sign for the general economy
c) will not continue into the next century
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