单项选择题

As suggested by Kofi Annan, how to solve the problem

A．To introduce new crops.
B．To offer more international aid.
C．To improve food security.
D．To increase agricultural production.
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单项选择题
What's the most serious problem African nations are facing
A．Hunger.
B．Malnutrition.
C．Lack of drinking water.
D．Poor transportation.
单项选择题
Two Iranian guards have been expelled because they_______.
A．were involved in espionage
B．incited religious confrontation
C．were involved in civil crimes
D．violated photographing restrictions
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