对软件是否能达到用户所期望的要求的测试称为 【4】 。
参考答案：(4)【4】有效性测试
Fair and (73) competition in government procurement around the world is good business and good public policy．Competitive pricing，product (74) and performance improvements result from competitive practices and help ensure that government authorities get the best (75) for the public they serve．
A．recession
B．innovation
C．crisis
D．ability
_____ his arrival at the village of the crows, he found his at the point of death.
A．Upon
B．Above
C．Beyond
D．Within
