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Threads a > A and B enter the first if judgment at the same time. B > A enters the synchronized block first, and since instance is null, it executes instance=new Singleton ();道路两旁都是绿油油地的庄稼，加之又地处湿润温暖的南方。[Editor's Note] Under the relevant policies of the new college entrance examination, the burden reduction order and the recent "Opinions on Regulating the Development of off-campus Training Institutions", quality education has been increasingly recognized by the market and parents. Among them, the cultivation of children's thinking is also highly valued. However, while the whole quality education is still in its initial development, the cultivation of children's thinking itself is also facing many challenges.　　第七季还邀请了另外几名超人扮演者友情客串，为该剧增色不少，定能让观看者激动不已。黄豆气道：你就那么笨，咋能随便就被人骗哩？我平日都怎么教你的？再说了，姑姑跟姑父是干啥的，他们不晓得帮你挑个好人家？红椒转头对他，气鼓鼓地说道：你咋这么喜欢跟我抬杠哩？我都说了，是倒了八辈子血霉，不成么？这人要是倒霉起来，喝凉水都塞牙缝，咱们家不是好端端的叫人把山给烧了么。24岁的埃伦总是很难完成她开始的工作，并最终决定获得她从未获得过的高中文凭。但要做到这一点，她必须假装自己16岁，这比她想象的要困难得多。