分数还能用用，
我数学记不清楚，阅读还看的比较仔细，可以提供给大家
1, housing future,
future的定义，举例有哪些future,然后说也可以有housing future,好处是稳定市场，降低风险。
farming commodity在没有future是market不稳定，有了future 就好了
类推说housing也会是这样。最后指出housing的特殊性，就是说房价差价大
2，bird migration
migration的鸟的地盘有时和resident的鸟重合，重合带来的结果是什么。resident的鸟比较有利，他们熟悉地形; migration的鸟的survival rate 就比较低。于是migration的鸟就去那些次等的地盘， 避开residents.
数学jj我看了不超过10道，也不知道有没有。不过有一道题目很早以前在gwd里做到过，ds,就是说n=1到9,问n能否确定，
a)1/n的十分位和n重合,
b)1/n的百分位和n重合
答案：A
我碰到的AA题目
"Our factory in Cookville is our most advanced and efficient. It is capable of producing ten drill bits for each of production costs,whereas none of our other factories can produce more than seven drill bits per dollar of production costs.Therefore,we can reduce our overall drill bit production by devoting the Cookville factory entirely to drill bit production.Since reducing the production costs of individual machine parts is the only way to achieve our larger goal of reducing our overall production costs,dedicating the Cookville factory entirely to drill bit production and shifting all other machine part machine to our other factories will help us to attain that larger goal."
AI
It is difficult for people to achieve professional success without sacrifiing important aspects of a fulfilling personal life
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