Ⅰ. 继承java. lang. Thread类,并重写run()方法
Ⅱ. 继承java. lang. Runnable类,并重写start()方法
Ⅲ. 实现java. lang. Thread接口,并实现run()方法
Ⅳ. 实现java. lang. Runable接口,并实现run()方法
A.Ⅰ,Ⅲ
B.Ⅱ,Ⅳ
C.Ⅱ,Ⅲ
D.Ⅰ,Ⅳ
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B.java. awt包
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A.for(int i=0; i<100; i++)
System. Out. println(i);
B.int i=0;
do
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A.public abstract class Animal
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D.以上都不对
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