单项选择题

A．Workers are not satisfied with working on one small duty day after day.
B．Few people understand all aspects of a whole operation.
C．Workers earn more money.
D．Few people know how to produce an entire car.
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单项选择题
A．Everyone at school takes a nap.B．His mind is so slow that he can’t concentrate.C．He doesn’t have classes in the afternoon.D．He works best after a nap.
A．Everyone at school takes a nap.
B．His mind is so slow that he can’t concentrate.
C．He doesn’t have classes in the afternoon.
D．He works best after a nap.
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