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:
杨长帆见三人呆愣不动，这便抬手，他说的是真的，以自己的身份，打了他们白打，土豪劣绅就这样，村里的乡绅都是站在自己家这边的，这破事儿你到县里上访也没用。
In order to expand their knowledge, Expanding contacts with society, Increasing the individual's experience in social competition, Exercise and improve their potential, so that they can really enter the society after graduation, and can deal with all aspects of problems well in life and work. We took part in this social activity with the same dream. We experienced happiness in the activity and learned more knowledge in the activity. In the activity, we went deep into the hearts and minds of the people! We went deep into the countryside to understand the people's feelings. I really feel very honored to take part in the summer vacation "Three Rural Areas". Although it was a short span of more than ten days, it was a completely different experience.
不必拘泥。
两名倒霉的电视技术员无意间撞见谋杀现场。为了避免成为嫌疑犯，二人采取了行动，结果每一步都弄巧成拙。
下午的时候，你石头叔已经进宫求过皇上了，帮你告了半月假，成亲尽够用了。
尹旭点头道：嗯，相信你一定可以做好的。
一部采用情境再现形式拍摄的24集历史电视纪录片，讲述了自明朝万历至清朝雍正共9位皇帝、579位历史人物、236个历史故事。 在这一宏大的历史叙事中，李亚平担当主持人，沉着冷静，观点鲜明。解说词辅以尤小刚“秘史系列剧”中的画面、音乐、音响等，烘托历史事件的过程和鲜活的历史人物。该片在国际上已连获4奖。 第一集 努尔哈赤速写第二集 李成梁，唉，李成梁第三集 战争真的开始了第四集 夺取广宁第五集……
Implementation code:
9、包公三请钟馗 7集 张世真－玉尚 林雪梅－傅娟
没了爹娘在跟前，那撑起一桩家业的感觉，使得两少年行事更有样子了。
And Dian Wei. Than Zhou Tai. Coppage and others should be able to resist a lot. It is also attributed to entering the arena for 30 seconds and belonging to Level 3. Gun resistance belongs to the fifth level of credit.
屌丝吴岩某天去酒吧逍遥撩妹,却反被女郎MiMi疯狂灌酒, 误入其设下的圈套,进入集团大小姐唐琪的房间。吴岩酒醉欲上前动手动脚,却被唐琪蹂躏。次日,唐琪和哥哥再次前往酒吧,恰巧发现旁边坐的是吴岩和他的死党三哥。并听到吴岩对好友解释昨晚被揍“真相”,谎称和MiMi因为激情受伤,唐琪不禁惊讶失态。吴岩与唐琪再次相遇。为躲避仇家追杀,唐琪决定假扮吴岩的女朋友,并威胁吴岩带她回家。吴岩希望用一场英雄救美来获取大小姐芳心,但没想到被唐琪识破伎俩。朝昔相处的二人暗生情愫,却在关键时刻杀出唐琪的仇家,吴岩为救唐琪而受伤,就在危险时刻唐琪的哥哥突然出现。吴岩住院,却因为头部受伤失忆,唐琪觉得这样反而对彼此都好,于是听从哥哥安排,离开吴岩。吴岩似乎忘记了唐琪的存在,当他又在酒吧泡妞的时候,却突然收到唐琪抱着孩子的视频,他决定去找她们......
英布感叹道：我们动手还是晚了些，要是能在路上追上那六万洛水汉军，也能削弱他们的城防实力。
秋香情意绵绵，一双美眸里全是唐伯虎。
究竟艾恩斯能否阻止各国谋略，打造自己的理想家园。
First, the standard of Putonghua should meet the "Putonghua Proficiency Test Grade Standard" issued by State Language Commission, Grade II, Grade B and above standards.
