（1）如图甲所示，一束光沿AO方向斜射到平面镜上，画出入射光线的反射光线，并标出反射角大小。(2分)
（2）画出图乙中物体AB在平面镜中所成的虚像。(2分)
题目分析：反射角为反射光线与法线的夹角，所以是600；平面镜成像作图需注意以下几点：（1）平面镜所成的像是虚像，用虚线表示，（2）物像连线是辅助线，也用虚线表示，（3）物像连线与镜面垂直，用垂直符号标出。
XYZ company has entered into a "plain-vanilla" interest rate swap on $1000000 notional principal. XYZ company pays a fixed rate of 8 percent on payments that occur at 90-day intervals. Six payments remain with the next one due in exactly 90 days. On the other side of the swap, XYZ company receives payments based on the LIBOR rate. Describe the transaction between XYZ company and the dealer at the end of the fourth period if the appropriate LIBOR rate is 9.2 percent.
A．
| A. XYZ company pays dealer $3000. |
B．
| B. Dealer receives $20000. |
C．
| C. Dealer pays XYZ company $3000. |