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A．He was shocked.
B．He was happy.
C．He was sad.
D．He was angry.
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单项选择题
A．An assembly line in an automobile factory is a very good example of the division of labor.B．One worker stays in one place and waits for a conveyor belt to move the product to him.C．One worker has the responsibility of producing an entire car each year.D．One worker has a particular duty to install a door or add lights.
A．An assembly line in an automobile factory is a very good example of the division of labor.
B．One worker stays in one place and waits for a conveyor belt to move the product to him.
C．One worker has the responsibility of producing an entire car each year.
D．One worker has a particular duty to install a door or add lights.
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