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【单选题】
如果一个消费者的效用函数为U=XY,那么在如下说法中,哪一条是错的
A.
边际效用递减规律成立
B.
X 商品的边际效用为 Y (需要简单的微积分知识);
C.
相对于X=3,Y=4的商品组合,消费者更偏好X=2,Y=7的商品组合;
D.
消费者对 X 和 Y 的偏好是等同的
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A.
王安石
B.
郭象
C.
刘勰
D.
许慎
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【单选题】—The dinner was delicious! —I agree. I am so full. —That’s too bad. But some dessert ____.
A.
has ordered
B.
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has been ordered
D.
was going to be ordered
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A.
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B.
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C.
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D.
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A.
ordered
B.
has ordered
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will be ordered
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【简答题】已知一个等腰三角形的周长为20cm,若其中一边长为6cm,求另外两边的长.
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【简答题】第二篇:C级 Football Football is, I suppose, the most popular in England: one has only to go to one of the important matches to see this. Rich and poor, young and old, one can see them all there, shou...
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【简答题】已知等腰三角形的周长是16cm。 (1)若其中一边长为4cm,求另外两边的长; (2)若其中一边长为6cm,求另外两边的长; (3)若这个等腰三角形的面积是10cm 2 ,高是4cm,求三边的长。
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