[单项选择]In the past 10 years, the company has gradually （）all of its smaller rivals.
A. engaged
B. occupied
C. monopolized
D. absorbed

[填空题]In the past eight years USAID has experimented with and improved various methods to slow the spread of HIV/AIDS.

[填空题]In the past eight years USAID has experimented a lot and improved various methods to slow the spread of epidemic.

[填空题]In the past thirty years Iran has been doing secretly the nuclear enrichment work, which is a direct challenge to the United States, Europe and the rest of the world.

[单项选择]

During the past years, intelligent technology has evolved (116) three generations. The first was characterized by tools such as prolog and OPS. prolog is a simple backward-chaining environment, and OPS is a simple forward-chaining environment. This led to the second generation of knowledge-engineering environments. Its goal was to model, prototype and construct (117) systems.
All three generations were oriented toward generic (118) and represented generalized implementation environments for the construction of expert systems. knowledge bases and AI applications.Some of the solution-oriented products are also seamlessly integrated with generic knowledge-engineering environments, permitting end users to add (119) rules and objects, as well as predefined knowledge-based logic to address problems in manufacturing simulation.Marketplace orientation is rapidly (120) toward solution-oriented intelligent product environments. the fourth generat
A. custom
B. knowledge
C. through
D. problem solving