麻烦请写原因,谢谢!

1.Kathy is trying to decide how much tome she should spend at work and how much time she should devote to leisure. Her best affordable point is determined by where

(a) the marginal rate of substitution is equal to the wage rate.

(b) the wage rate is equal to $15

(c)the opportunity cost of an hour of leisure is equal to the wage rate.

(d)the income effect is equal to the substitution effect for a wage change.

2.If workers are willing to work more hours when the nominal wage increases, what can be said about the economic rationality of their decision?

(a)The decision is not economically rational, since it should be based on the real wage only.

(b)The decision could be rational if workers thought that the inflation rate would fall in the future.

(c)The decision could be rational if workers thought that the real wage had fallen.

(d)The decision could be rational if workers thought that the nominal wage and the real wage were equal.

3.假定A国在1999年的名目GDP为20亿,1998年的CPI为210,且1999年的通货膨胀率为30%,则该国在1998年以1999年为基年计算的实质GDP是多少??

4.假定一开始政府为平衡预算,现在政府增加支出100万元,且增加等量的税收来支付支出,则下列何者"不"正确?

(A)同时增加G和T的平衡预算

(B)充分就业的产出水平将会增加

(C)私部门的消费及投资均为减少

(D)储蓄曲线将会左移,且利率上升

(E)政府储蓄不变