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
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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.
单项选择题
How many different creatures are used when preparing roasted camel
A．One.
B．Two.
C．Three.
D．Four.
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