题目内容

关于软件生命周期,下列哪个说法是不正确的?()

A. 软件生命周期分为计划、开发和运行三个阶段
B. 在计划阶段要进行问题定义和需求分析
C. 在开发后期要进行编写代码和软件测试
D. 在运行阶段主要是进行软件维护

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5.In many schools we employ computers for schoolchildren to learn how to use them.

A PC can be a laptop or a desktop.

A CPU, usually regarded as the heart of a computer, can be a microprocessor.

We can learn from the text that a computer can ______.

A. be best used as a calculating device
B. be best used in word processing
C. find uses almost everywhere
D. have intelligence of its own

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