以下关于面向对象的分析与设计的叙述中，说法正确的是 (53) 。
A. 面向对象设计描述软件要做什么
B. 面向对象分析无须考虑技术和实现层面的细节
C. 面向对象分析的输入是面向对象设计的结果
D. 面向对象设计的结果是简单的分析模型
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According to the President, when economy develops ______.
A. more people will get university education
B. more people with a university education are needed
C. more people will get good jobs
D. more people will have their pay raised
After the Civil War, there was a great demand in Britain for ______.
A. the southern money
B. signatures of George Washington
C. the southern letters
D. the Civil War battle plans
The girl is often listened ______ songs at the next room.
A. practise to sing
B. practise singing
C. to practise to sing
D. to practise singing
在以下情形中，适合于采用队列数据结构的是 (42) 。
A. 监视进入某住宅小区的访客
B. 统计商场中的顾客人数
C. 监视某个火车票售票窗口等待服务的客户
D. 描述某公司的组织管理机构
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