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We know that computers can be used for work, study, entertainment, etc. In addition to the necessary computer hardware, software is also needed. Usually, we call a computer with only hardware but no software "bare metal", which cannot do any meaningful work. At present, software can be divided into two categories according to its use: system software and application software. System software is a program designed for computer systems to efficiently use and manage computer software and hardware resources and support the operation of application software. Such as operating systems, programming languages and language processing programs, network system software, system service programs, etc. Among them, Windows operating system is what we often use. Application software is a variety of programs that are user-oriented and written to solve practical problems. It can be written by users themselves or purchased. For example, office XP, Photoshop, Red Alert and so on, which we often use.These threats are what Samuel Woolley, research director of the Digital Intelligence Laboratory of the Future Research Institute, calls "computational propaganda". He defines them as "false information dissemination and politically motivated attacks". These attacks are designed by "algorithms, automation and human management" and published through the Internet, especially social media. In a statement to Futuristic Technology magazine, Woolley added that the targets of these attacks were "the basic components of democracy: the media, open civic discourse, privacy and free elections".　　1918年的十月革命，1919年的五四运动，给中国带来了巨大的冲击，在这块黑暗的土地上，掀起了壮阔的波澜，外有列强环伺，内有军阀割据，从“翰林总统”徐世昌、下野的大元帅孙中山，到学者李大钊、蛰居在小胡同的“北漂”毛泽东，每个人都在苦苦寻找国家的出路和未来，只有明白了1921年前后的中国，才能明白共产党的诞生，不是偶然。才能明白，李大钊陈独秀毛泽东们，怎样一步步选择了共产主义。中国，怎样选择了共产主义。相传清朝末年，有两位状师，一位姓洪、一位姓贺，这两位状师原是一对惺惺相惜的同门师兄弟，后来因为一桩轰动全国的公案，因而反目成仇。师弟洪状师应用奸计获得胜诉，威名远播、天下皆知，更获得皇上封为“天下第一状”，并御赐匾额一块，而这块匾额于是成为洪家的镇家之宝。师兄贺状师却因中计失败，沦为公堂之笑柄，威名更是一夕扫地，贺家也因此而家道中落，贺状师更是因此而抑郁而终，临死仍想夺回那“天下第一状”的封号。就这样，两家的恩怨自此展开……二顺媳妇听了，又是欢喜又是惭愧，忙道：大老远带回来的，你们两家这么多人，就不要分我们了吧。一群勤劳的道路工人在一对争吵不休的父子的带领下，意外惊醒了一个古老的爱尔兰吸血鬼，他们必须熬过这一夜。