在Excel中可选取（）单元格。

A．单个

B．多个

C．连续

D．不连续

WindowListener中可以实现窗口关闭功能的方法是【 】

A．public void windowOpened(WindowEvent e)

B．public void windowClosed(WindowEvent e)

C．public void windowClosing(WindowEvent e)

D．public void windowDeactivated(WindowEvent e)