测量债券利率风险的方法有( )。
A．久期
B．β系数
C．凸性
D．VaR
参考答案：A,C
解析： 测量债券利率风险的方法主要有久期和凸性。故选AC。
阅读短文，判断正(T)误(F)。
This is a bedroom. It's a nice room. Can you see a table? A picture is on the table. Please look at the picture.
It's a picture of Kate's family. It's a colour photo. Kate is a girl. Her father is a doctor. Her mother is a teacher.
( ) 1. A picture is on the wall.
( ) 2. This is a picture of Kate's family.
( ) 3. Kate's father is a doctor.
( ) 4. Kate's mother is a nurse.
( ) 5. There are four people in Kate's family.
HDLC中的（）用来实现数据信息的传送。
A.I帧
B.S帧
C.U帧
