李铁梅这个人物是现代京剧( )剧目中的女主角
A.《红灯记》
B.《沙家浜》
C.《海港》
D.《杜鹃山》
参考答案:A
根据上下文的提示,补写出古诗文名篇名句中的空缺部分。(每空1分,共6分)
小题1:君问归期未有期,巴山夜雨涨秋池。 , 。(李商隐《夜雨寄北》)
小题2: , 。小园香径独徘徊。(晏殊《浣溪沙》)
小题3:半亩方塘一鉴开,天光去影共徘徊。 ? 。(朱熹《观书有感》)
An analyst does research about the coefficient of covariance and the Sharpe ratio. A security's mean return is positive and more than its standard deviation of returns. If the risk-free rate is zero, the coefficient of covariance is most likely:
A. less than the Sharpe ratio.B. equal to the Sharpe ratio.C. greater than the Sharpe ratio.