---What do you think of the book , Betty ?

---It’s a good one . Each time you read it , you will find _______.

A．something new

B．new something

C．nothing new

D．new nothing

一个BSC（LSL模式下）的第一条Atermux上必须要配置的信令有（）

A.GSL

B.N7

C.Qmux

D.X.25