单项选择题

Habits acquired in youth-notably smoking and drinking-may increase the risk of ______ diseases in a person’s later life.

A．cyclical
B．chronic
C．critical
D．consecutive
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单项选择题
After the earthquake, a world divided by ______ and religious disputes suddenly faced its common humanity in this shocking disaster.
A．epidemic
B．strategic
C．ethnic
D．pathetic
单项选择题
AIDS is a global problem that demands a unified, worldwide solution, which is not only the responsibility of nations in which AIDS is most ______.
A．vigorous
B．relevant
C．prevalent
D．rigorous
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