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
单项选择题
A．In 1868B．In 1886C．In 1898D．In 1889.
A．In 1868
B．In 1886
C．In 1898
D．In 1889.
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