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
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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
单项选择题
Which of the following statements is TRUE
A．Asia has higher population growth rates than Latin America and Africa.
B．The speaker is optimistic that the solution will be found in time.
C．The speaker directly blames one continent for population explosion.
D．The speaker simply reports the situation without identifying a solution.
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