【单选题】【消耗次数：1】
一个进程释放一种资源将有可能导致一个或几个进程的状态如何变化？
①
由就绪变运行
②
由运行变就绪
③
由阻塞变运行
④
由阻塞变就绪
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一个线程在任何时刻都处于某种线程状态（thread state）,例如运行状态、阻塞状态、就绪状态等。一个线程可以由选项中的哪种线程状态直接到达运行状态？( )
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