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．the rapid growth in world oil consumptionB．the rise of China and IndiaC．the construction of new pipelines is becoming more difficultD．the rise of oil price
A．the rapid growth in world oil consumption
B．the rise of China and India
C．the construction of new pipelines is becoming more difficult
D．the rise of oil price
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