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【简答题】
《爱的教育》的作者是( ),他是( )国家的人,主人公是( )
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举一反三
【单选题】If both the marginal cost and the average variable cost curves are U-shaped, at the minimum point of the average total cost curve, the marginal cost curve must be:
A.
greater than average variable cost.
B.
less than average variable cost.
C.
equal to average variable cost.
D.
at its minimum.
【单选题】If the marginal benefit to consumers is greater than the marginal cost to producers, more should be produced because .
A.
consumers would be willing to purchase the extra output and producers would be willing to supply the units and both consumers and producers would be better off
B.
consumers can take advantage of sellers
C.
sellers can take advantage of buyers
D.
consumers and sellers would gain the same amount from further exchange
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