单项选择题

Passage One

A．To keep warm in flu season.
B．To be away from the infected.
C．To get an annual flu vaccine.
D．To do exercises every day.
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单项选择题
A．One’s attitude.B．One’s ability.C．One’s scores.D．One’s dream.
A．One’s attitude.
B．One’s ability.
C．One’s scores.
D．One’s dream.
单项选择题
A．Most Women and children.B．People with chornic diseases.C．The elderly over 75 years old.D．The babies under six months.
A．Most Women and children.
B．People with chornic diseases.
C．The elderly over 75 years old.
D．The babies under six months.
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