阅读下面程序 public class Test implements Runnable { private int x=0; private int y=0; boolean flag=true; public static void main(String[]args) { Test r=new Test(); Thread t1=new Thread(r); Thread t2=new Thread(r); t1.start(); t2.start(); } public void run() { while(flag) { x++;y++; System.out.println("("+x+","+y+")"); if(x >=10) flag=false; } } } 下列对程序运行结果描述的选项中,正确的是
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