单项选择题

According to the passage, what truely results in the impoverishment of the developing countries

A．The rapid growth of population.
B．The presenvation of rainforests.
C．The cutting of rainforests.
D．The conflicts between developed countries and developing countries.
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单项选择题
Why does the author say that the protection of endangered species is a highly controversial issue
A．Because people can't agree as to what species to protect.
B．Because it is difficult to find an effective way to protect such species.
C．Because it affects the interests of certain groups of people.
D．Because it is a major problem involving a series of legal procedures.
单项选择题
According to the passage, cutting trees to grow more food ______.
A．will widen the gap between the developed and the developing countries
B．is but a short-term relief to the food problem
C．can hardly alleviate the shortage of food
D．proves to be an effective way for impoverished nations
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