如果消费者的收入增加了，同时有一个商品价格下降了，那么消费者的境况至少会与原先一样好吗？If the income of the consumer increases and one of the prices decreases at the same time， will the consumer necessarily beat least as well-of？

如果一个消费者的效用函数为那么，他在商品2上的花费占他收入的比例是多少？If a consumer has a

如果一个消费者的效用函数为那么，他在商品2上的花费占他收入的比例是多少？

If a consumer has a utility functionwhat fraction of her income will she spend on good 2？

费者的境况是变好还是变坏？如果这个消费者在利率变动后转变为一个借款人，他的境况是变好还是变坏？

A consumer，who is initially a lender，remains a lender even after a decline in interest rates.Is this consumer better of for worse off after the change in interest rates？If the consumer becomes a borrower after the change is he better of for worse off？

在哪一种类型的偏好下，无论课征从量税还是课征所得税，消费者的境况会一样好？For what kind of preferences will the consumer be just as well-off facing a quantity tax as an in-come tax？

A.高档品

B.替代品

C.必需品

D.低档品

设一个消费者使用两种商品（x，y)，效用函数为 ，商品价格P_x=5元，P_y=3元。（1)假设他的收入为40元，求消费者均衡;（2)求恩格尔曲线。

如果实际上是根据最初的消费量进行退税，那么，消费者的境况是变得更好呢，还是变得更坏？In this case would the consumers be better of for worse off if the tax with rebate based on original consumption were in effect？

A.消费者的收入

B.消费者的偏好

C.相关商品的价格

D.消费者对商品价格的预期

0%。同时假设该消费者希望自己在各期消费数量尽量相同。要求计算:

(1)该消费者一生收入的现值;

(2)该消费者面临的预算约束式;

(3)该消费者在现期如何消费和储蓄;

(4)如果现期收入增加11单位，该消费者的现期消费和储蓄如何变化？

(5)如果未来收入增加11单位，该消费者的现期消费和储蓄如何变化？