第4题: [单项选择]设一张债券的面额为100元,年利率为10%,期限为5年,利息在期满时一次支付。按照单利债券的计息办法来计算其到期时的利息为______元,按复利债券计算其到期时的利息为______元。( ) A. 50;50 B. 50;61.05 C. 61.05;50 D. 61.05;61.05 参考答案:B 答案解析: [解析] 按照单利计息:100×10%×5=50(元);按照复利计息:100×(1+10%)5-100=61.05(元)。
A. How the tone of a piano is affected by its shape. B. How to measure a piano’s resonance. C. How to improve your performance by choosing the right piano. D. How size makes a piano more expensive. 参考答案:A 答案解析:[听力原文] 14-17 Today I would like to demonstrate the tone of different kinds of pianos, to demo