单项选择题

A．None
B．Two
C．Three
D．Four
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单项选择题
A．A story in prose.B．A poem that rhymes.C．A novel.D．A thesis.
A．A story in prose.
B．A poem that rhymes.
C．A novel.
D．A thesis.
单项选择题
A．Soil.B．Human population.C．Forest.D．Water.
A．Soil.
B．Human population.
C．Forest.
D．Water.
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