老师好，R2中example4里说的representative是根据原文啥信息分析出来的？R1中example2里there have been few failures of large auto parts manufacturers even given periods of difficulty，可以理解为群体性的长久经验是相对正向的，如果是个体化的长久经验该归为正向还是负向的呢？同样，R2example2中第一句是否是正确或者合情合理的呢？另外，R2exexample4中She thinks stocks will decline in the near future because each month for the last six months stocks have risen more than the average monthly increase for the last 25 years. 这里说过去6个月一直上涨的经验是正向的，错就错在她根据这个判断要回归，如果这里说根据过去6个月一直上涨，推出之后可能也会维持上涨是否是对的，或者没有偏差的呢？因为R1example2中就是根据there have been few failures of large auto parts manufacturers even given periods of difficulty来判断说APM大概率还是会挺过来，导致有点疑惑。

这个题不考了能不能删掉呢

请问 本节内容只有5分钟 为什么要放25道level2的综合题吗 这和level1的考试对路吗 有必要在学懂弄通这25道大题上花时间吗？

C也可以是对的呀，assetprice上升和下跌的概率为一半一半

“Negotiable certificates of deposit are CDs with a minimum face value of $100,000. They are guaranteed by banks, cannot be redeemed before their maturation date, and can usually be sold in highly liquid secondary markets”所以不能提前withdraw?

如果collateral质量高，the market value of the security used as collateral and the value of the loan的差别也有可能会很大？因为抵押物质量好所以给的优惠更多？

这题可以讲一下么？BS上一般不都是历史成本么？

是不是P/B只有leading而P/S既有leading也有trailing？

SRAS是一根向上倾斜的直线，为什么讲义上写的是downward呢？是不是写错了？

可以详细说说这道题吗？