D > B enters the synchronized block, and since instance is not null at this time, it immediately leaves the synchronized block and returns the result to the program calling the method. E > At this point, thread B intends to use the Singleton instance, only to find that it has not been initialized, so an error occurs. Therefore, there is still the possibility of errors in the program. In fact, the running process of the program is very complicated. From this, we can see that it is more difficult and challenging to write programs especially in multi-threaded environment. We further optimized the program:
7. Please write one or two famous sayings about cherishing time that you have accumulated.
四位女大学生为了告别单身，用一场为期一年的“约定”,开始了她们各自的寻爱之旅。外科医生江雪频频相亲失败后，偶然结识了一位房地产公司总经理王大卫。俩人如愿订婚后，王大卫患了直肠癌。两人的爱情面临严峻考验。语文教师钱淼淼、舞蹈演员肖媛媛、公司主管刘雨菲，三人在一次次相亲中与缘分擦肩。为了能寻觅到真正的爱人,她们把绣球抛向了网络，以及亲友们介绍的相亲对象。心态、形态各异的男人们纷纷登场，四女友最终找到了真爱。一年约定到期，四姐妹相约在莲花山公园见面，她们谈起自己的相亲经历，都为能修成正果都感叹不已！
Source authentication and resource isolation, that is, when the client and the server establish a reply, the source of the request is authenticated as necessary, and the authentication results are formed into a reliable white list or blacklist, thus ensuring the effectiveness of the server in processing services. If there are enough hackers and broilers and the authenticity of forged data packets is high, a better countermeasure effect can only be achieved by improving the processing speed and traffic throughput of the server.
女的则是清南村的，是死（四）狗子的小妾。
美丽纯洁的少女独孤梦一心出国，嫁给了一个海外华人，却被骗被卖，不幸落入国外黑社会控制中。 以蛇头身份奉命回国的独孤梦开了一家出国咨询公司组织 非法移民 偷渡出国。她找到了十几年前的恋人外事警官雷大克，想在他的帮助下从事非法活动。 伴随着十几年来的恩恩怨怨，双方陷入情......
Services: Functions provided by the system that users will benefit from in their use.
? At the beginning of Station B, there were many MAD's of high quality. From these MAD's, you can see some interesting animation clips. After watching them, you will immediately look for the original movie to watch. Some music works, after reading it, are just kneeling down and begging for pictures and songs. At that time, my friends should really use love to generate electricity. They sincerely loved the second dimension. At that time, all kinds of high-quality works filled Station B, and there were many high-quality works to watch every day. It has become a habit to open Station B before tea and after meals.
倭寇久战思乡，钱财也早已堆满了货船。
咱们是不是别管闲事？少爷想……大苞谷瞪着他道：管闲事？你说我这是管闲事？机灵鬼忙赔笑道：也不是管闲事。
Which chains can use the rules in the table (table-to-chain correspondence):
1943年，国共联合抗战期间，爱国青年，豫商世家之子沈立一心要投奔心中的圣地延安，不料介绍人，亦师亦友的红色资本家老邢遭国民党当局逮捕。沈立决意接替老邢，视商场为战场，以自己独特的经商手段为共产党筹措抗战物资。国民党经济调查处专员张书恒从中作梗，沈立利用这位昔日同窗贪得无厌的本性合开公司，借助对方身份掩护自己，在丁敏秋的协助下，将一批批军需物资和经费输送到抗日前线。解放战争胜利在即，沈立为了阻止张书恒偷运大量黄金出境遭到追杀。为保护沈立，丁敏秋与张书恒同归于尽。丁敏秋的牺牲震撼了沈立，追忆老邢的教诲，他面对党旗宣誓，为新中国建设奉献终生
We can also reload the rules in/etc/sysconfig/iptables as the current iptables rule, but note that changes not saved in the/etc/sysconfig/iptables file will be lost or overwritten.
A 6.9 magnitude earthquake occurred in Jiujiang, Jiangxi Province.
虽然未来充满警戒，但直斗诚实的话语给了我勇气，于是踏上了天神路上的演唱会。之后，直斗和只有SNS的对话开始了，即使不能见面也渐渐被对方吸引，与成长的未来斗。虽然未来会变得积极，但前男友再次受到威胁…
Exclusive Achievement Award (Award will be received when reaching the corresponding charm level for the first time)
故事围绕一个刚出生的宝宝开始。人字拖（成龙 饰）虽有不凡的身手，可是终日沉迷赌博毫无人生目标，便与包租公（许冠文 饰）、八达通（古天乐 饰）一起爆窃，干着偷偷摸摸的犯罪事。城中女富豪（余安安 饰）唯一的孙子出生后，包租公受不了金钱的诱惑，答应把宝宝偷给黑帮老大，以证明BB是否自 己死去的儿子与前女友的孩子。
反正爹娘都来了，大势已定，再说他还有杀手锏没亮出来呢。
只怕是祸水。
这次，名作名篇们以动画的形式来展现其魅力，脱离了文字，跃然于频幕前，以富于想象力的画面和色彩来还原小说中的故事。系列故事的声优均由堺雅人担当。让我们跟随堺雅人的声音，进入到不可思议的文学世界中去。
