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采用UML进行软件建模过程中， 1 是系统的一种静态视图，用 2 可明确表示两类事物之间存在的整体/部分形式的关联关系。 2处选择（）
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软件测试的目的是 4 ，通常可分为白盒测试和黑盒测试。白盒测试根据程序的 5 来设计测试用例，黑盒测试根据软件规格说明来设计测试用例。 4处选择（）
若每一条指令都可以分解为取指、分析和执行三步。已知取指时间t 取指 =4△t，分析时间t 分析 =3△t，执行时间t执行=5△t。如果按串行方式执行完100条指令需要 6 △t。如果按照流水线方式执行，执行完100条指令需要 7 △t。 6处选择（）
采用UML进行软件建模过程中， 1 是系统的一种静态视图，用 2 可明确表示两类事物之间存在的整体/部分形式的关联关系。 1处选择（）
Advances in computers and data networks inspire visions of a future "information economy" in which everyone will have (1)_____ to gigabytes of all kinds of information anywhere and anytime, (2)_____ information has always been a (3)_____ difficult commodity to deal with, and, in some ways, computers and high-speed networks make the problems of buying, (4)_____, and distributing information goods worse (5)_____ better. The evolution of the Internet itself (6)_____ serious problems. (7)_____ the Internet has been privatized, several companies are (8)_____ to provide the backbones that will carry traffic (9)_____ local networks, but (10)_____ business models for interconnection—who pays how much for each packet (11)_____, for example—have (12)_____ to be developed. (13)_____ interconnection standards are developed that make (14)_____ cheap and easy to transmit information across independent networks, competition will (15)_____. If technical or economic (16)_____ make interconnection difficult, (17)_____ transmitting data across multiple networks is expensive or too slow, the (18)_____ suppliers can offer a significant performance (19)_____; they may be able to use this edge to drive out competitors and (20)_____ the market.
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