老师您好均值为零不就是一上一下的情况吗？可是这种情况是违法模型假设的啊（负相关）

个人投资者管理难度高还是机构投资者管理难度高，老师前后好像讲法不一样，在讲义第9页的时候讲机构投资者管理难度高，在12页又说个人投资者管理难度高，请问究竟以哪种说法为准？

选项C的days sale outstanding是receivable turnover天数还是asset turnover天数啊

可以再解释一下这道题吗

可是讲义里说IFRS只有finance lease啊没有说不区分

请问interest expense和interest payment有什么区别

请问可以解释一下计算bond的BASE法则含义吗？

7. For portfolio managers of passive funds, market indexes are least useful as: A. proxies to measure systematic risk. B. benchmarks for portfolio performance attribution. C. tools to develop exchange-traded funds for non-accessible markets. 我选择的是C，可是答案却是B？

6. The index weighting that results in portfolio weights shifting away from securities that have increased in relative value toward securities that have fallen in relative value whenever the portfolio is rebalanced is most accurately described as: A. float-adjusted market-capitalization weighting. B. fundamental weighting. C. equal weighting. 为什么选择B

2. After the public announcement of the merger of two firms, an investor makes abnormal returns by going long on the target firm and short on the acquiring firm. This most likely violates which form of market efficiency? A. Semi-strong-form only B. Semi-strong-form and strong-form C. Weak-form and semi-strong-form 为什么不选择C