单项选择题

A．Geology.
B．Political science.
C．History.
D．Biology.
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单项选择题
A．Conduct market research.B．Sell cameras.C．Advertise on newspapers.D．Give away the mobile phones.
A．Conduct market research.
B．Sell cameras.
C．Advertise on newspapers.
D．Give away the mobile phones.
单项选择题
Winston Churchill suggested that ECSC should be created to prevent military conflict in Europe.
A．Y
B．N
C．NG
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