28题 需要讲解 38题 讲解 40题 讲解 41题 讲解 另，两个问题 1、loan to value ratio 怎么理解？ 2、忘记最后一张图片中 圈2 记录的原因了…… 谢谢老师

这道题式子哪里不对呢

虽然C可以写成a+bY的函数，但是在分析IS曲线移动的时候，C的增加和减少是不是还是会影响IS线右移或者左移？ 但老师的PPT没有写C会影响IS线移动呢？

这题到底是什么意思呀？？课上不讲，题目使劲出，是不是有神经病呀？？

关于roll yield，老师在题目中讲的方法非常简单似的。但我理解不了是什么来头。 为什么升水时，就是负的？怎么个理解方式呢？本节题目全错在这个知识点上了。

你好，老师在视频中提到了机构投资者买债券匹配负债的问题，我想问下，债券也有违约的可能性，如果违约了那不是没有办法在到期日还掉liability了？谢谢

A firm engages in developing and marketing electronic devices in a perfectly competitive, decreasing-cost industry. If the demand is increasing, then the most likely equilibrium response in the long run to rising demand for such devices is for selling prices to: A rise and per-unit production costs to decrease. B remain constant and per-unit production costs to remain constant. C fall and per-unit production costs to decrease. 这个题不会，网课虽然听过，但是一看那些图形有点蒙，总是感觉很难理解，麻烦讲讲

Compared with perfect competition, a natural monopoly will most likely be associated with a decrease in: A Deadweight loss. B Producer surplus. C Consumer surplus. 这个题我也是排除做出来的，但能否从正面再讲解下

n economic forecasting firm has estimated the following equation from historical data based on the neoclassical growth model: Potential output growth = 1.5 0.72 x Growth of labor 0.28 x Growth of capital The intercept (1.5) in this equation is best interpreted as: A the long-run sustainable growth rate. B the growth rate of total factor productivity. C above trend historical growth that is unlikely to be sustained 这个题该怎么理解，

Which of the following statements best describes the costs of international trade? A Countries without an absolute advantage in producing a good cannot benefit significantly from international trade. B Resources may need to be allocated into or out of an industry and less-efficient companies may be forced to exit an industry, which in turn may lead to higher unemployment. C Loss of manufacturing jobs in developed countries as a result of import competition means that developed countries benefit far less than developing countries from trade. 上一题 下一题 老师，这个题我是排除选出来的，但是不知道为什么选这个，麻烦 讲解