单项选择题

The price of vegetables fluctuates according to the weather.

A．jumps
B．rises
C．falls
D．changes
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单项选择题
None of the five people killed by inhalational anthrax had been vaccinated against influenza.
A． Right
B． Wrong
C． Not mentioned
单项选择题
Those who get the flu vaccine are surely protected from the disease.
A． Right
B． Wrong
C． Not mentioned
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