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[单选题]
假设有两种商品X和Y,单价分别是10元和20元,小李的月收入为2000元,则他对这两种商品的预算约束线为( )
A
Ab.Bc.Cd.D
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试题答案:
A
答案解释:
该题考察的是消费者预算约束集的作图方法。一般地,若有两种商品,一种商品用X来表示,另一种商品用Y来表示时,我们用X商品的数量作为横坐标,Y商品的数量作为纵坐标,所以B和D项是错误的。横截距表示的是把所有的收入都用来购买X商品所能得到的数量,所以横截距是200;同理,纵截距是100,所以A是正确选项,其他选项错误。
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