伴有窦房结功能低下的高血压病人，不宜单用（）
A.可乐定
B.利血平
C.氢氯噻嗪
D.普萘洛尔
E.α-甲基多巴
参考答案：D
A corporate bond with the following data is issued: $1000 par value. 8.0 percent coupon payments. 5 years to maturity with semiannual coupon payments. Market interest rates are 10 percent. What is the total interest expense（）
A. 923.
B. 545.
C. 477.
_____ of my sharpeners is from Australia. [ ]
A. Some
B. Two
C. All
D. One
