原型化方法的使用有一定的局限性，主要表现在
A．原型化方法的使用和推广必须要有合适的工具
B．原型化方法的使用和推广必须要有一个强有力的软件支撑环境作为背景
C．对于某些技术层面的困难远大于分析层的系统用原型方法有一定的困难
D．原型化方法的使用和推广需要有经验的原型化开发人员
参考答案：C
解析：BSP方法是一个将企业的战略转化为信息系统战略的过程，这是 BSP的基本概念，因此BSP研究是了解企业战略的内容。虽然，它也涉及到企业信息系统的总体规划、信息结构，但其主要目的是企业战略目标的信息转化，与物理模型无关。
Hearing the front door open, I ran down to the kitchen and waited. I saw my dad come in, with the white envelope in his hand. I had waited all day for this, so I reached over him for it as soon as he set foot into the house. Angrily, he 41 the envelope on the table and said that it was nothing to get excited about, and that it was just a piece of paper. I grabbed (抓取) it and ran upstairs. I wondered why my dad did not understand how 42 I was to see my mid-year report card for my first year in middle school. I was really 43 by how he refused to consider all my hard work. I saw my class rank (等级): 1/139. I did not behave what I saw. I felt my lips (嘴唇) form a smile and wanted to run downstairs to tell everyone. Then I 44 what my dad had said--- it was nothing to get excited about. I wanted to share my happiness with someone, but felt lonely. I realized that I had become distant (远隔的) from my family. We used to ___45______late watching Disney movies, and my brothers, sisters and I would play tennis in the backyard all the time. I wondered when all that had 46 . I just no longer took part in them. My school work 47 all my time and energy. While I had been busy with my study, I had also built a 48 between me and my family. I was only trying to become a person everyone could be 49 of. I wanted to go downstairs, say sorry for my rude behavior and for every refused movie and tennis game, and be 50 of my family again, I knew I had to do something--because without their support, my achievement meant nothing. 小题1:A, caught B. cleaned up C. pinked up D. threw
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