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单项选择题

现有: 
5.  class Order2 implements Runnable  {    
6.    public void run()  {    
7. for (int x- o;  x<4;  x++)  { 
8. try{Thread.sleep(100);  )catch  (Exception e)  {  }    
9.    System.out.print("r");    
10.    }  } 
11.    public static void main(string  []  args)  {    
12.    Thread t=new Thread(new order2());    
13.    t.start(); 
14.    for(int x=0;  x<4;  x++)  {    
15.    //insert code here    
16.    System.out.print("m");    
17.  }  }  } 
哪一个插入到第15行,最有可能产生输出 rmrmrmrm?()     

A.  Thread.sleep(1);
B.  Thread.sleep(100);
C.  Thread.sleep(1000);
D.  try{  Thread.sleep(1);  )  catch  (Exception e)  {  }
E.  try{Thread.sleep(100);  )  catch  (Exception  e)  {  }
F.  try{Thread.sleep(1000);  )  catch  (Exception  e)  { }

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单项选择题 现有:  class ThreadBoth extends Threaa implements Runnable  {      public void run()  (System.out.print("hi");  }     public static voicl main (String  []  args)  {     Thread tl=new ThreadBoth():      Thread t2 = new Thread (tl):     tl.run():      t2.run():     }          结果为:()

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