He______（apology) for interrupting us yesterday.

Why does the author mention a dog's bark？

A．It is a type of memory.

B．It is a type of interruption.

C．Dogs have better memories than humans.

D．A dog's bark is similar to a doorbell.

Why does the author mention a dog's bark？

A．It is a type of memory.

B．It is a type of interruption.

C．Dogs have better memories than humans.

D．A dog's bark is similar to a doorbell.

有如下的代码段，当编译和运行时，下列各选项中说法正确的是()。 public class Z { public static void main(String args[]) { new Z()； } Z() { Z aliasl=this； Z alias2=this； synchronized(aliasl) { try{ alias2.walt()； System.out.println("DONE WAITING")； } catch(InterruptedException e) { System.out.println("INTERR UPTED")； } catch (Exception e) { System.out.println("OTHER EXCEPTION")； } finally{ System.out.println("FINALLY")； } } System.out.println("ALL DONE")； } }

A．应用程序编译正常，但是不打印任何数据

B．应用程序编译正常，并打印数据“DONE WAITING”

C．应用程序编译正常，并打印数据“FINALLY”

D．应用程序编译正常，并打印数据“ALL DONE”