单项选择题

According to the passage, a large population will produce a chance for developing ______.

A．agriculture
B．transport system
C．industry
D．national economy
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单项选择题
The government of the developed countries may prefer to a ______ population.
A．stable
B．slowly-increasing
C．fast-increasing
D．declining
单项选择题
It is not an easy job to carry out a general plan for birth control throughout the world because ______.
A．there are too many underdeveloped countries in the world
B．underdeveloped countries have low level of industrial development
C．different governments have different views on the question
D．even developed countries may have complex problems
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