单项选择题

A．$5
B．$15
C．$30
D．$250
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单项选择题
A．In the Pacific ocean.B．Close to Europe.C．Nobody knows.D．In the Atlantic Ocean.
A．In the Pacific ocean.
B．Close to Europe.
C．Nobody knows.
D．In the Atlantic Ocean.
单项选择题
A．A chemistry class.B．A biology class.C．A mathematics class.D．A physics class.
A．A chemistry class.
B．A biology class.
C．A mathematics class.
D．A physics class.
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