单项选择题

能将程序补充完整的选项是 class Person { private int a； public int change(int m){return m；} } public class Teacher extends Person { public int b； public static void main(String arg[]) { Person p=new Person(); Teacher t=new Teacher(); int i； _____ } }

A．i=m
B．i=b
C．i=a
D．i=change(50)
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单项选择题
下面程序段的输出结果为 public class Test { public static void main(String args[]) { boolean a,b,c; a=(3＜5); b=(a==true); System.out.printin( a= +a+ b= +b) ; c-(b==false); System.out.println(b= +b+ e= +c) ; } }
A．a=true b=false b=true c=false
B．a=true b=false b=true c=true
C．a=true b=true b=true c=false
D．a=false b=false b=true c=false
单项选择题
下面程序段的输出结果是 class Test{ public static void main(String args[]){ MyThread t=new MyThread()； t.displayOutput( t has been createD) ; t.start(); } } class MyThread extends Thread{ public void displayOutput(String s){ System.out.println(s); } public void nm(){ displayOutput( t is running. ); }
A．t has been create t is runnin
B．t has been create
C．t is runnin
D．编译出错
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