Math
1. DS 一群人中有一个叫A,一个叫B,问一共有多少人？
a 抽出2个人，同时是A和B的概率是1/15
b 抽出2个人，两个都不是A或B的概率是2/5
我选了 D
CR
1. 若人们期望通胀上升或对通胀uncertain,长期利率会高于短期利率，如人们期望通
胀下降，长期利率会低于短期利率
What can be inferred from the above?
其他三个选项很容易排除，剩下两个
在高通胀的时候，长期利率会高于短期利率(迷惑选项，注意是预期)
长期利率和短期利率的ratio是判断人们对通胀预期的indicator（正确）
RC
1. 关于real interest rate和saving surplus的关系。tradition的观点认为saving
和investment之间的差（saving比investment大叫saving surplus，反之saving
deficit）会导致real interest rate的变化，surplus导致interest rate 下降，反
之反之。但是这种传统观点在1960和1980年代都被证明不对。
有一个新观点认为是real interest rate的变化导致资金流出入，如高涨的real
interest rate会带来外资涌入，从而遏制了both domestic savings and
investments.
SC
不是很记得了，记得有一句GWD, 我之前看本月机井时也出现过 Between 1990 and 2000 the global economy grew more than it did during the 10,000 years from the beginning of agriculture to 1950. A. Between 1990 and 2000 the global economy grew more than it did during the 10,000 years from the beginning of agriculture B. Between 1990 and 2000 the growth of the global economy was more than that during 10,000 years, from when agriculture began
C. The growth of the global economy between 1990 and 2000 exceeds that which had been for 10,000 years from the beginning of agriculture D. The growth of the global economy between 1990 and 2000 exceeds what it has been for 10,000 years, from when agriculture began E. The growth of the global economy between 1990 and 2000 exceeded what it did for the 10,000 years from the beginning of agriculture
| 
