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"These attacks not only point to multiple targets, but also their specific tactics are changing in real time," said GarySockrider, solutions architect for Arbor Networks USA. Attackers will observe the response of the site and organize new attacks immediately after the site goes back online.Behind both analysis and synthesis is classification ability. Analysis is to find differences in one class, while synthesis is to find commonality in different things, which is equivalent to the dimension of classification. In fact, the core of pyramid principle and structured thinking is classification ability. This is also why many people have learned pyramid principles or structured thinking, but they still cannot analyze and solve problems because they have not accumulated a large amount of knowledge in a certain field (declarative and procedural knowledge, situational knowledge) and do not have conceptual ability in the field.2.5郑氏也不管，自顾按自己的心思行事。What kind of shoes are most suitable depends on the user's own physical condition and movement habits.A4.1. 2.5 Fundus.