In a world where it seems we already have too much to do, and too many things to think about, it seems the last thing we need is something new that we have to learn. But use cases do solve a problem with requirements: with __1__ declarative requirements it's hard to describe steps and sequences of events. Use cases, stated simply, allow description of sequences of events that, taken together, lead to a system doing something useful. As simple as this sounds, this is important. When confronted only with a pile of requirements, it's often __2__ to make sense of what the authors of the requirements really wanted the system to do. In the preceding example, use cases reduce the ambiguity of the requirements by specifying exactly when and under what conditions certain behavior occurs; as such, the sequence of the behaviors can be regarded as a requirement. Use cases are particularly well suited to capturing these kind of requirements. Although this may sound simple, the fact is that __3__ requirement capture approaches, with their emphasis on declarative requirements and "shall" statements, completely fail to capture the __4__ of the system's behavior. Use cases are a simple yet powerful way to express the behavior of the system in way that all stakeholders can easily understand. But, like anything, use cases come with their own problems, and as useful as they are, they can be __5__. The result is something that is as bad, if not worse, than the original problem. Therein it's important to utilize use cases effectively without creating a greater problem than the one you started with.3、____
（ ）is the process of transforming information so it is unintelligible to anyone but the intended recipient.
As each application module is completed,it undergoes（ ）to ensure that it operates correctly and reliably.
（ ）algorithm specifies the way to arrange data in a particular order.
After analyzing the source code,（ ）generates machine instructions that will carry out the meaning of the program at a later time.
（ ）can help organizations to better understand the information contained within the data and will also help identify the data that is most important to the business and future business decisions.
浏览器开启无痕浏览模式后，（ ）依然会被保存下来。
下列协议中，不属于TCP/IP协议簇的是（ ）。
下列传输介质中，带宽最宽、抗干扰能力最强的是（ ）。
数控编程常需要用参数来描述需要加工的零件的图形。在平面坐标系内，确定一个点需要2个独立的参数，确定一个正方形需要（ ）个独立的参数。
某书的页码为1，2，3，...，共用数字900个（一个多位数页码包含多个数字），据此可以推断，该书最大的页码为（ ）。
