单项选择题

This talk covers each of the following topics EXCEPT ______

A．a comparison of growth rates by continent
B．family planning education
C．problems resulting from the population explosion
D．causes of the population explosion

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热门试题

单项选择题

The most urgent problem the population increase has caused is ______

A．increased unemployment
B．scarcity of farmland
C．shortage of food
D．more work to be done to support all the children

单项选择题

The population explosion is caused chiefly by ______

A．a fall in death rates
B．a rise in birth rates
C．competition between rich and poor countries
D．an increase in the amount of food per person