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．The man’’s professor.B．The man’’s roommate.C．A neighbor.D．The man’’s brother.
A．The man’’s professor.
B．The man’’s roommate.
C．A neighbor.
D．The man’’s brother.
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