问题 单项选择题

下列叙述中正确的是( )。

A) 软件测试应该由程序开发者来完成
B) 程序经调试后一般不需要再测试
C) 软件维护只包括对程序代码的维护
D) 以上三种说法都不对

答案

参考答案:D

解析: 因为测试的目的在于发现错误,从心理学角度讲,由程序的编写者自己进行测试是不合适的,为了达到最好的测试效果,应该由独立的第三方进行测试工作,所以选项A)错误;程序调试,修改一个错误的同时可能引入了新的错误,解决的办法是在修改了错误之后,必须进行回归测试,所以选项B)错误;所谓软件维护,就是在软件已经交付使用之后,为了改正错误或满足新的需要而修改软件的过程,可见选项C)也是错误的。

填空题
单项选择题

Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened between. As was discussed before, it was not until the 19th century that the newspaper became the dominant preelectronic mediam, following in the wake of the pamphlet and the book and in the company of the periodical. It was during the same time that the communications revolution speeded up, beginning with transport, the railway, and leading on through the telegraph, the telephone, radio, and motion pictures into the 20th - century world of the motor car and the air plane. Not everyone sees that processin perspective. It is important to do so.

It is generally recognized, however, that the introduction of the computer in the early 20th century, (48) by the invention of the integrated circuit daring the 1960s, radically changed the process, although its impact on the media was not immediately (49) . As time went by, computers became smaller and more powerful, and they became "personal" too, as well as (50) , with display becoming sharper and storage (51) increasing. They were thought of, like people, (52) generations, with the distance between generations much (53) .

It was within the computer age that the term "information society" began to be widely used to describe the (54) within which we now live. The communications revolution has (55) both work and leisure and how we think and feel both about place and time, but there have been (56) view about its economic, political, social and cultural implications. "Benefits" have been weighed (57) "harmful" outcomes. And generalizations have proved difficult.

56()

A.competitive

B.controversial

C.distracting

D.irrational