单项选择题

A．For scientific study.
B．For field guides.
C．For entertainment.
D．For some film background sounds.
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单项选择题
A．To suggest candidates.B．To raise teachers’ salaries.C．To make a platform.D．To do fund-raising.
A．To suggest candidates.
B．To raise teachers’ salaries.
C．To make a platform.
D．To do fund-raising.
单项选择题
A．Redwood trees.B．Forest fires.C．San Francisco.D．Survival skills.
A．Redwood trees.
B．Forest fires.
C．San Francisco.
D．Survival skills.
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