单项选择题

What will happen in the year of 2030

A．There will be 21 cities having a population of more than 10 million.
B．Rural area will be extinct.
C．Most people will live in cities.
D．The third world will keep abreast with the developed worl

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单项选择题

Which of the following statements is NOT true according to the passage

A．The developing countries develop faster than the developed countries.
B．Cities contribute more to the GDP than the villagers.
C．Some problems are more easily solved in cities than in country.
D．It's impossible to solve urban problems by getting people out of cities.

单项选择题

What is the passage mainly about

A．Big cities.
B．City life.
C．Population.
D．Gross Domestic Product.