在国民经济中发挥“火车头”作用的是[ ]
A．工业
B．高科技农业
C．现代交通业
D．高新技术产业
答案：D
“好头颅六个凭空送，菜市街夜夜叫冤魂。”与这句旧民谣有关的事件是 ( )
A．公车上书
B．戊戌变法
C．义和团运动
D．辛亥革命
Assume that a firm has an expected dividend payout ratio of 20%, a required rate of return of 9% , and an expected dividend growth of 5%. What is the firm's estimated price-to-earnings (P/E) ratio（）
A. 5.00.
B. 10.00.
C. 20.00.
