根据对话意思及首字母提示补全对话。

A:What kind of movies are scary?

B:T____1_____

A:What do you think of Beijing Opera?

B:I think it is i____2____.

A:Who is Jackie Chan?

B:He is great a_____3____.

A:Do you like Black September?

B:Yes,it's a very s____4____ thriller.

A:Who do you often go to the movies w____5____.

B:My friends.

在B—ISDN中，( )简化了网络功能。其网络不参与任何数据链路层功能，将差错控制与流量控制工作交给终端去做，它采用异步时分复用方式。

A．虚电路交换

B．分组交换

C．报文交换

D．ATM