Extreme Programming (XP) is a discipline of software development with (71) of simplicity, communication，feedback and courage．Successful software development is a team effort-not just the development team，but the larger team consisting of customer, management and developers．XP is a simple process that brings these people together and helps them to succeed together．XP is aimed primarily at object-oriented projects using teams of a dozen or fewer programmers in one location．The principles of XP apply to any (72) project that needs to deliver quality software rapidly and flexibly． An XP project needs a (73) customer to provide guidance．Customers，programmers， managers，are all working (74) to build the system that’s needed．Customers-those who have software that needs to be developed-will learn simple, effective ways to (75) what they need，to be sure that they are getting what they need，and to steer the project to success．

（74）处填（）。

A．together

B．by themselves

C．separately

D．alone

关于人民民主专政，正确的是（）。

A.其本质是人民当家作主、管理国家

B.是工人、农民、知识分子和其他劳动者所共同享有的民主

C.是维护安定团结的政治局面，扩大改革开放，进行社会主义现代化建设的重要保证

D.是中国特色的无产阶级专政