单项选择题

The passage is mainly concerned with ______.

A．the side effects of urbanization.
B．megacities in developing countries.
C．the causes behind immigration to cities.
D．ways to slow down the pace of immigration.

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单项选择题

From the passage, we can infer that the author is what kind of person

A．poor
B．sensitive
C．exciting
D．dull

单项选择题

According to the passage, some slumdwellers are not interested in improving their environments because they ______.

A．are unsure of their residency.
B．dislike urbanization.
C．are used to the president environment.
D．are homogeneous and anonymous.