单项选择题

A．The study of Emu oil.
B．The use of Emu oil.
C．The effect of Emu oil.
D．Neither of above choices.
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单项选择题
A．Revolutionary WarB．the First World WarC．wars involved AmericaD．the Civil War
A．Revolutionary War
B．the First World War
C．wars involved America
D．the Civil War
填空题
quantity of copies
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