Population Problem More and more of the world’ s population are living in towns or cities. The speed at which cities are gro

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问题                         Population Problem
    More and more of the world’ s population are living in towns or cities. The speed at which cities are growing in the less developed countries is【C1】______(alarm). Between 1920 and 1960, big cities in【C2】______(develop)countries increased two and a half times in size, but in other parts of the world the【C3】______(grow)was eight times their size.
    The sheer size of growth is bad enough, but there are now also very【C4】______(disturb)signs of trouble in the comparison of percentages of people living in towns and percentages of people working in industry. In Europe, the proportion of people living in cities was always smaller than that of the work force working in factories. Now, however, the reverse is almost always true in the newly【C5】______(industry)world.
    Without a base of people working in industry, these cities cannot pay for their growth. There is not enough money to build adequate houses for the people that live there, let alone the new【C6】______(arrive). There has been little opportunity to build water supplies or other facilities. So the figures for the growth of towns and cities represent【C7】______(proportion)growth of【C8】______(employ), a growth in the number of【C9】______(hope)and【C10】______(despair)parents and starving children.  
【C8】

选项

答案unemployment

解析 本句空白处放在介词of的后面,根据句子结构可以判断of连同空白处一起来修饰名词growth,即需填入employment(就业率)或unemployment(失业率)这样的名词。另外该段基本讲述城市化进程过快的坏处,因此,此空白处需要填入unemployment(失业率)。
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