东汉末年,著名的我国第一首五言长诗《孔雀东南飞》产生于今()一带。
A.庐江
B.东至
C.怀宁
D.太湖
参考答案:C
为了减轻甲氨蝶呤的毒性反应,可用下列哪种药物做救援剂()
A.叶酸
B.甲酰四氢叶酸钙
C.维生素B2
D.硫酸亚铁
E.维生素C
An analyst does research about efficient frontier. Which statement is the least likely the character of the efficient frontier()
A. Minimize risk for a given return target.
B. Slope decrease along the curve.
C. Have the same utility for investors.