隆中对（节选）

    亮答曰：“自董卓已来，豪杰并起，跨州连郡者不可胜数。曹操比于袁绍，则名微而众寡，然操遂能克绍，以弱为强者，非惟天时，抑亦人谋也。今操已拥百万之众，挟天子而令诸侯，此诚不可与争锋。孙权据有江东，已历三世，国险而民附，贤能为之用，此可以为援而不可图也。荆州北据汉、沔，利尽南海，东连吴会，西通巴、蜀，此用武之国，而其主不能守，此殆天所以资将军，将军岂有意乎？益州险塞，沃野千里，天府之土，高祖因之以成帝业。刘璋暗弱，张鲁在北，民殷国富而不知存恤，智能之士思得明君。将军既帝室之胄，信义著于四海，总揽英雄，思贤如渴，若跨有荆、益，保其岩阻，西和诸戎，南抚夷越，外结好孙权，内修政理；天下有变，则命一上将将荆州之军以向宛、洛，将军身率益州之众出于秦川，百姓孰敢不箪食壶浆以迎将军者乎？诚如是，则霸业可成，汉室可兴矣。”

阅读理解

    Hummingbirds(蜂鸟) are one of nature's most energetic fliers and the only birds to hover(盘旋) in the air by relying on their strength alone.

    Now scientists have found that it is the ratio(比值) of the bird's wing length to its width that makes them so efficient. The discovery is helping experts compete with 42 million years of natural selection to build helicopters that are increasingly efficient.

    David Lentink, an assistant professor at Stanford University in California, tested wings from 12 different species of hummingbirds, which he sourced from museums. He placed them on a machine used to test the aerodynamics(气力学) of the helicopter blades(桨叶). Professor Lentink's team used the same machine to test the blades from an advanced micro-helicopter used by the UK's army. They found that the micro-helicopter's blades are as efficient at hovering as the average hummingbirds.

    But while the micro-helicopter's blades kept pace with the average hummingbird wings, they could not keep up with the most efficient hummingbird's wing. The wings of Anna's hummingbird were found to be about 27 percent more efficient than the man-made micro- helicopter's blades.

    While Professor Lentink wasn't surprised at nature's superiority, he said that helicopter blades have come a long way. “The technology is at the level of an average hummingbird,” he said. “A helicopter is really the most efficient hovering device that we can build. The best hummingbirds are still better, but I think it's amazing that we're getting closer. It's not easy to match their performance, but if we build better wings with better shapes, we might match hummingbirds.”

    Professor Lentink said that we don't know how hummingbirds maintain their flight in a strong wind, how they navigate(确定方向) through branches, or how they change direction so quickly. He thinks that great steps could be made by studying wing aspect ratios-the ratio of wing length to wing width. Understanding these abilities and characteristics could be a benefit for robotics and will be the focus of future experiments.

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     2017年4月1日，中共中央、国务院印发通知，决定设立河北雄安新区。
    设立雄安新区，是以***同志为核心的党中央深入推进京津冀协同发展作出的一项重大决策总署，是千年大计、国家大事。在雄安新区规划建设发展的重大实践中，我们必须把新发展理念作为根本遵循，全力打造新发展理念引领的创新发展示范区。

    雄安新区规划建设将紧紧围绕“人”这个核心谋篇布局，充分提高基本公共服务水平，发展社会事业，配套优质教育医疗等资源，使雄安新区率先成为共享协同发展成果的幸福之城。

     雄安新区规划建设要坚持生态优先、绿色发展，恪守绿水青山就是金山银山理念，划定开发边界和生态红线，严格区域环境保护，加大植树造林和湿地恢复力度，构建蓝绿交织、清新明亮、水城共融的绿色家居生态新城。

     雄安新区的定位首先是北京非首都功能疏解集中承载地，但更长远的战略意图乃是借此带动冀中南乃至整个河北发展，形成新的区域增长极。

     结合材料，分析党中央、国务院是如何贯彻落实科学发展观，以新发展理念引领雄安新区规划建设的。