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单项选择题 public class Threads4 {  public static void main （String[] args） {  new Threads4（）.go（）；  }  public void go（） {  Runnable r = new Runnable（） { public void run（） {  System.out.print（”foo”）；  }  }；  Thread t = new Thread（r）；  t.start（）；  t.start（）；  }  }  What is the result？（） 

A、 Compilation fails.

B、 An exception is thrown at runtime.

C、 The code executes normally and prints „foo”.

D、 The code executes normally， but nothing is printed.

  • B

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