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案例分析题我们常用的数据模型类型有层次模型、网状模型、关系模型和面向对象模型四种。（）是数据库系统中最早出现的数据模型，其数据库系统的典型代表是IBM公司的IMS（Information Management Systems）数据库管理系统；而（）是使用最广的数据模型。 （）是数据库系统中最早出现的数据模型，其数据库系统的典型代表是IBM公司的IMS（Information Management Systems）数据库管理系统
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案例分析题对长度为N的线性表进行查找，若采用顺序查找法，那么在最坏情况下所需要的比较次数为（）；若采用折半查找法，那么在最坏隋况下所需比较的次数为（）。 若采用折半查找法，那么在最坏隋况下所需比较的次数为（）。
Part B Read the following text carefully and then translate the underlined segments into Chinese. Your translation should be written clearly on ANSWER SHEET 2. Most of us have the same definition of happiness. Happiness is the specific goal that we set for ourselves. However, once we arrive at the goal we set for ourselves, we still feel dissatisfied. We have moved our vision to another one, and we try to chase another one. On one hand, 61) our life is enhanced by our dreams and aspirations. On the other hand, our enjoyment of life is pulled further and further by our faraway goals. By learning the lessons of gratitude and abundance, we can get closer to the enjoyment of life. 62) Gratitude means being thankful and appreciative of what we have, which fills our heart with the joyful feeling. It helps us to fully appreciate everything around us. We can try the following way to cultivate gratitude. 63) It is the best way to imagine what our life would be like if we lost what we had. This way can remind of what we have and help us to appreciate them. Put down what we are grateful for, so that we can be conscious of our blessings. 64) Spend time offering assistance to others who are less fortunate than you, so that you may gain perspective. Scarcity is one of the most common human fears. Sometimes we are not satisfied with what they have, striving to get as much as they can. In fact, 65) scarcity consciousness arises as a result of the "hole-in-the-soul syndrome", which means that people attempt to fill the gaps in our inner heart with the material things from outside world. It is necessary for us to remind what we have and revel in our interior abundance.
案例分析题数据库管理系统（DBMS）是位于（）之间的—层管理软件，它是一种（）的数据。 数据库管理系统（DBMS）是位于（）之间的—层管理软件。
案例分析题As mentioned above, C imposes relatively few built - in ways of doing things on the program- mer. Some common tasks, such as manipulating (66) , (67) , and doing (68) (I/O), are performed by calling on library functions. Other tasks which you might want to do, such as creating or listing directories, or interacting with a mouse, or displaying windows or other (69) elements, or doing color graphics, are not defined by the C language at all. You can do these things from a C program, of course, but you will be calling on services which are peculiar to your programming environment (70) , processor, and operating system) and which are not defined by the C standard. Since this course is about portable C programming, it will also be steering clear of facilities not provided in all C environments. （66）处应选择（）
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