在软件的使用过程中，用户往往会对软件提出新的功能要求与性能要求。为了满足这些要求而进行的维护属于（）维护。
A．改正性
B．适应性
C．完善性
D．预防性
参考答案：C
解析：
本题考查的是软件维护概念。根据维护活动的不同原因可将软件维护分为改正性维护、适应性维护、完善性维护和预防性维护。其中改正性维护进行改正软件在功能、性能等方面的缺陷或错误，适应性维护是为了适应运行环境的变化而进行的修改，完善性维护是在软件的使用过程中，为满足用户提出新的功能和性能需求而对软件进行的扩充、增强和改进等。另外，为提供软件的可维护性和可靠性等，对软件的一部分进行重新开发，即进行预防性维护。
| 完形填空。 | ||||
| School students in China have been learning dance for a year since 2008. Are they doing well? On September, 2008, a dance competition was 1 in Xi'an. Let's take a look. More than 2,500 students from 40 schools 2 the competition. The Middle School affiliated (附属的) to Xi'an Jiaotong University was the 3 of all the junior teams. The 100 students of the school were happy to 4 the first prize. They made their dance special 5 a "five Olympic rings" pattern (形状). They also 6 the waltz and the traditional yangge dance. No pains, no gains. The students said they had been practising for 7 half a year. "We were nervous at first 8 we didn't know each other," said Zeng Jingyi, a 13-year-old girl. "What's more, the boys were clumsy (笨拙的) and often stepped on the girls' 9 !" Only practice makes perfect. The students practiced more than three hours a day."Sometimes I saw boys playing basketball in the playground," said Xu Rui, a 13-year-old boy. "How I wanted to join them! But I didn't. Dancing can be 10 too. We should work hard for our school's honor." | ||||
|