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【参考答案】

A
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B
单项选择题
A．Machines can do ,iil the physical work for man.B．Machines cab do all the mental work for man.C．All heavy labor should be replaced by machines.D．All heavy labor shouldn’t be replaced by machines.
A．Machines can do ,iil the physical work for man.
B．Machines cab do all the mental work for man.
C．All heavy labor should be replaced by machines.
D．All heavy labor shouldn’t be replaced by machines.
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