下面哪些方法可用于创建一个可运行的多线程类?() A: publicclassTimplementsRunable{publicvoidrun(){…}} B: publicclassTextendsThread{publicvoidrun(){…}} C: publicclassTimplementsThread{publicvoidrun(){…}} D: publicclassTimplementsThread{publicintrun(){….}} E: publicclassTimplementsRunable{protectedvoidrun(){…}}

下列哪个方法可用于创建一个可运行的类 A: publicclassXimplementsRunable{publicvoidrun(){......}} B: publicclassXimplementsThread{publicvoidrun(){......}} C: publicclassXimplementsThread{publicintrun(){......}} D: publicclassXimplementsRunable{protectedvoidrun(){......}}

以下C#代码中，关于虚方法和抽象方法使用正确的是（） A: publicabstractclassAnimal{publicAnimal(){}}publicabstractvoidRun():Animal{publicCat(){}publicvoidRun(){}} B: publicclassAnimal{publicAnimal(){}}publicabstractvoidRun():Animal{publicCat(){}publicvoidRun(){}} C: publicabstractclassAnimal{publicAnimal(){}publicabstractvoidRun();}publicclasscat:Animal{publicCat(){}publicoverridevoidRun(){}} D: publicvirtualclassAnimal{publicAnimal(){}publicvirtualvoidRun();}publicclasscat:Animal{publicCat(){}publicoverridevoidRun(){}}

下列关于Test类的定义中，正确的是（）。 A: classTestimplementsRunnable{publicvoidrun{}DublicvoidsomeMethod[]{}} B: classTestimplementsRunnable(puIblicvoidrun；} C: classTestimplementsRunnable(DublicvoidsomeMethod[]；} D: classTestimplementsRunnable(publicvoidsomeMethod{}}

A046阅读下面程序publicclassTest2___________{publicstaticvoidmain(String[]args){Threadt=newTest2(); t.start();}publicvoidrun(){System.out.println(“Howareyou.”);}}在程序下划线处填入正确选项是（）（1.0分）

运行下列程序，会产生什么结果？（）1)publicclassExercises3_1extendsThreadimplementsrunable{2)publicvoidrun(){3)System.out.println("thisisrun()");4)}5)publicstaticvoidmain(Stringargs[]){6)Threadt=newThread(newExercises3_1());7)t.start();8)}9)}

分析下面的程序，写出运行结果。classExercises6_3{classDog{privateStringname;privateintage;publicintstep;Dog(Strings,inta){name=s;age=a;step=0;}publicvoidrun(Dogfast){fast.step++;}}publicstaticvoidmain(Stringargs[]){Exercises6_3a=newExercises6_3();Dogd=a.newDog("Tom",3);d.step=29;d.run(d);System.out.println(""+d.step);}}运行结果是：（）

程序员想要创建一个名为MyThread的类以便在main方法中用Thread实例化。对于下面三行:MyThread必须继承Thread。MyThread必须实现Thread。MyThread必须覆盖publicvoidrun()。有几行是正确的() A.0 B.1 C.2 D.3