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单项选择题
A．At his father’ s construction company.B．On his father’ s farm.C．In a record company.D．At a club.
A．At his father’ s construction company.
B．On his father’ s farm.
C．In a record company.
D．At a club.
单项选择题
A．By grinding heated limestone (石灰石) and clay and mixing them with water.B．By mixing limestone, clay and water.C．By grinding limestone and clay under water.D．By burying limestone and clay underground.
A．By grinding heated limestone (石灰石) and clay and mixing them with water.
B．By mixing limestone, clay and water.
C．By grinding limestone and clay under water.
D．By burying limestone and clay underground.
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