NO.PZ2016010802000096
问题如下：
Which curve represents combinations of income and the real interest rate at which planned expenditure equals income?
选项：
A.The IS curve.
B.The LM curve.
C.The aggregate demand curve.
解释：
A is correct.
The IS curve represents combinations of income and the real interest rate at which planned expenditure equals income.
考点：IS 曲线
解析：IS曲线反映了收入与支出的相等（商品市场的状况），并且也反映了income与r之间的反向关系，所以应该选A
LM 曲线反应的不是商品市场的情况而是货币市场的情况，所以B不入选
AD反应的是Y和价格之间的反向关系，所以不入选。
你好，这道理说是income和R有反比关系。
可是课上讲的是Y和R是反比。是因为income和Y成正比吗？
