NO.PZ2018062003000035
问题如下：
Compared with a Giffen good, a Veblen good
选项：
A.is not an inferior good, but a Giffen good is.
B.has the negative income effect, so does a Giffen good.
C.has a positive slope of the demand curve, but Giffen good has a negative slope of the supply curve.
解释：
A is correct.
Giffen goods are inferior goods, which has negative income effect, while Veblen goods are luxuries.The demand curve of Giffen goods also has a positive slope.
考点：吉芬商品和韦伯伦商品
解析：吉芬商品是劣等品，而韦伯伦商品不是劣等品，它是炫耀性的商品。收入增加的消费者会更多地购买这类炫耀品，韦伯伦的需求量随之上升，所以A选项正确。
但是有别于吉芬商品，韦伯伦商品的没有理论支持，所以其没有所谓的收入效应和替代效应。所以B选项不正确。
注意到吉芬商品和韦伯伦商品都具有向上倾斜的需求曲线，所以C选项错误。
老师，c选项说的是吉芬商品有一个负的供给曲线，因为公司供给曲线一般不都是与需求曲线相反吗？
