More and more of the world's population are living in towns or cities.<br />The speed at which cities are growing in the less developed countries is alarming.<br />Between 1920 and 1960, big cities in developed countries increased two and a half times in size.<br />But in other parts of the world, the growth was eight times their size.<br />The size of growth is bad enough. During the 19th century,<br />cities grew as a result of the growth of industry. In Europe, the proportion of people living in<br />cities was always smaller than that of the workforce working in factories. Now, however,<br />the reverse is almost always true in the newly industrialized world.<br />The percentage of people living in cities is much higher than the percentage working in industry.<br />Without a base of people working in industry, these cities cannot pay for their growth.<br />There is not enough money to build enough houses for the people that live there,<br />to say nothing of the new arrivals. There has been little opportunity<br />to build water supplies or other facilities.<br />More and more of the world's population are living in towns or cities.<br />The speed at which cities are growing in the less developed countries is alarming.<br />Between 1920 and 1960, big cities in developed countries increased two and a half times in size.<br />But in other parts of the world, the growth was eight times their size. The size of growth<br />is bad enough. During the 19th century, cities grew as a result of the growth of industry.<br />In Europe, the proportion of people living in cities was always smaller than that of the<br />workforce working in factories. Now, however, the reverse is almost always true in the newly<br />industrialized world. The percentage of people living in cities is much higher than the percentage<br />working in industry. Without a base of people working in industry, these cities cannot pay for<br />their growth. There is not enough money to build enough houses for the people that live there,<br />to say nothing of the new arrivals. There has been little opportunity<br />to build water supplies or other facilities.
（1）
What's the passage mainly about?
A . Failures in city planning.B . The development of cities.C . The increase of the world's population.
（2）
What caused the growth of cities during the 19th century?
A . The growth of industry.B . The growth of population.C . The growth of educated people.
（3）
What percentage was smaller in Europe during the 19th century?
A . The job opportunities in big cities.B . The workforce working in factories.C . The proportion of people living in cities.
（4）
Who contributed most to the city growth?
A . The government.B . The people working in industry.C . The people living in the city.
