[单选题]Organizations perform work to achieve a set of objectives. Generally, work can be categorized as either projects or operations, although the two sometimes are（）

正确答案 ：C

overlap

解析：该题的关键词为"categorizedprojects or operations"，其语句结构为"Generally,work（主语）can be categorized（谓语）as either projects or operations, althoughthe two（主语）sometimes are（）（谓语）"，含义为"通常，工作可以分类为项目型和运作型工作，尽管两者有时(?)"，因两者既有相同之处，也有不同的地方，所以选择C。选项D对应的单词"dissever"疑为拼写有误。

[单选题]Fair and(1) competition in government procurement around the world is good business and good public policy. Competitive pricing, product(2)and performanceimprovements result from competitive practices and help ensure that government authoritiesget the best (3)for the public they serve.

正确答案 ：

[单选题]Fair and(1) competition in government procurement around the world is good business and good public policy. Competitive pricing, product(2)and performanceimprovements result from competitive practices and help ensure that government authoritiesget the best (3)for the public they serve.

正确答案 ：

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