下面代码中的内部类名是（）。

import java.awt*;

import javax.swing.*;

class TalkingClock

public static void main(int interval,final boolean beep)

ActionListener listener=new ActionListener()

public void actionPerformed(ActionEvent event)

______

Timer t=new Timer(interval,listener);

t.start();

A．Timer

B．ActionListener

C．listener

D．匿名

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet. Heterogeneous network environments consist of computer systems from (66) vendors that run (67) operating systems and communication protocols. An organization that (68) its computer resources is usually (69) the task of integrating its heterogeneous systems. Typically, each deparlment or division has defined its own network needs (70) OS, LAN topology, communication protocols, applications, and other components.

A．in general

B．in any term

C．in set terms

D．in terms of