下列说法正确的是( )
A．线程的终止一般可通过两种方法实现：自然撤消(线程执行完)或是被停止(调用 stop()方法)
B．一个暂时终止运行的线程(例如，睡眠或阻塞)在排除了终止原因后直接运行
C．一个线程因为输入输出操作被阻塞时，执行resume()方法可以使其恢复就绪状态
D．调用了suspend()方法，也可以使线程进入死亡状态
参考答案：A
解析： 线程的终止一般可通过两种方法实现：自然撤消(线程执行完)或是被停止(调用stop()方法)。目前不推荐通过调用 stop()来终止线程的执行，而是让线程执行完。所以选项A的说法是正确的。
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| One student took a box of chicken to class.Another carried on a cellphone __1__ and still another whistled loudly every time the __2__ turned his back.Reform school?No. College. More and more, professors say, they are coming across __3__ students in their classrooms.Many of today's young scholars arrive late, leave __4__, talk loud or take care of personal __5__ such as paying bills during class.Why are the students behaving badly?"Because they can, , " said a student of University of North Texas."A lot of the time, , the professors let them get away with it." Some educators say it is time to bring politeness back to their classrooms and even __6__ taking some of the blame for bad behavior.They say that rude students are by no means the majority but that one of them can ruin an entire __7__. People are __8__ when they learn that impolite behavior is becoming more and more common in __9__ education, , says Dr. Gerald Amanda, , a counselor at City College of San Francisco.They __10__ some high school students to misbehave but think those who get to __11__ will behave more politely. Dr. Amanda believes that society in general has become more tolerant of rude behavior and that people in power, , including professors, , no longer __12__ standards for __13__.That leads to a growing imprudence(轻率行为)among some college students."There's a great deal of bad behavior in the world around them, , and young people see it and __14__ disrespect, , "said Dr. Amanda, , __15__ that sometimes students "have no idea that they are being rude." | ||||
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