切牙和尖牙间的裂隙为（） A.唇裂 B.颌裂 C.腭裂 D.横面裂 E.斜面裂

战国时期，出现了百家争鸣的局面。结合所学知识，回答下列问题。

（1）百家争鸣 出现的原因是什么？

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（2）百家争鸣中主要有哪些学派？

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（3）百家争鸣有什么影响？

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2011年经济工作必须全面贯彻党的十七届五中全会精神，以邓 * * 理论和“三个代表”重要思想为指导，深入贯彻落实科学发展观。从哲学角度看，这是因为

(1)先进的社会意识对社会存在起着积极的推动作用

(2)科学理论对实践有巨大的推动作用

(3)正确的意识的事物发展起促进作用

(4)正确的价值观对人们认识世界和改造世界具有导向作用

A(1)(2)(3)B(2)(4)C(1)(3)(4)D(1)(2)(3)(4)

配制粘土钻井液时加入适量（）可提高粘土造浆能力。

A、石灰

B、纯碱

C、石膏

D、水

战略发展结构

Extreme Programming (XP) is a discipline of sofiware development with (1) of simplicity,communication, feedback and cuurage. 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 success 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 (2) project that needs to deliver quality software rapidly and flexibly. An XP project needs a (3) customer to provide guidance. Customers, programmers, managers, are all working (4) to build the system that's needed, Customers - those who have software that needs to be developed - will learn simple, effective way to (5) what they need, to be sure that they are getting what they need, and to steer the project to success.

空白（4）处应选择（）

A.together

B.bythemselves

C.separately

D.alone