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更多“According to the passage, __. A．flowers and vegetables from Devon are on the market one mo”相关的问题
dollars per unit of A and 
dollars per unit of B.The cost of producing these units is given by the joint-cost function 
What should x and y be to maximize profit?
A.no any
B.no
C.none
D.nothing
A.women can ’ t do what men can
B.men have to work much harder than women
C.men can earn money more easily than women
D.men’s duties are different from women’s
Passenger ：______
Bus Driver： Forty cents. Drop it in the box？
A.What is the price, please？
B.What shall be the fee, please？
C.How much does it cost, please？
D.How much is the fare, please？
A.expose the evils of the slavery system
B.condemn all kinds of war
C.describe people’s life in Harriet, s time
D.tell us how Harriet wrote her famous book
A.at the spot
B.on the spot
C.for the spot
D.in the spot
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