数学奥林匹克高中训练题(24)

第一试 一、选择题(每小题6分,共36分) 1.对于每一对实数x、y,函数f满足方程 f(x y)-f(x)-f(y)=1 xy,且f(1)=1.那么,f(n)=n(n≠1)的整数n的个数共有( )个。     

留在心底的那碗粥

学校的旁边,有一家粥店。店不算大,却收拾得干干净净。店中央摆着三张方桌,每张方桌上都有一碗红糖,是给粥作"伴侣"的。每每喝着冒着热气的粥,一种幸福感便油然而生,萦系于怀……冬日的早晨,我总爱到粥店喝上那么一小碗。粥不贵,买粥前,只要把一个一元钱的硬币     

少儿美术教育中创造性思维的培养

全球性的艺术教育的革新与我国新一轮的课改的更新,推动着人们对美术教育的不断追求和探索。日益形成的美术社会化、素质化,成为美术教学的一大课题,其中创造性思维的培养和发展是课题中最重要的目标之一。创造性思维是人产生新颖、有社会价值的产品或对问题作出独特解答的能力。     

说的艺术——演讲中的口语表达(二)

(二)词句流利、准确、易懂听众想听明白演讲主要靠耳朵听。演讲者借助口语发出的信息,听众要立刻能理解。口语与书面语之间有较明显的区别。有人说,书面语言是最后被理解,而口语则需立即被听懂。与书面相比,口语具有如下特点:首先,句式短小,演讲不宜使用过长的冗繁的句子;其次,     

虫虫总动员

星期天,牛顿顿约3个同学踢球,他们来到空地上,这里机车隆隆,正在施工。袁子弹同学垂头丧气:哎,咱们的乐园要被改成水泥大厦喽。顿顿不想让大伙儿扫兴,说:要     

在“理”清脉络中悟法

承载着回顾与整理、沟通与生长独特功能的复习课,在现实的推进中,却始终不得要义。追根溯源,是我们未能以学生的视角来烛照我们的复习课堂,方法的偏差与观念的陈旧是根本症结所在。复习课是以梳理教材中的知识,沟通知识之间的联系,形成完整的知识网络体系为目的的。     

在线教学环境下的教务管理工作探索

新时期教育信息化的深入发展,要求学院教务管理必须依循这一客观背景做出创新。基于在线教学的宏观背景,对当前学院教务管理工作的内容和模式进行优化,不仅能够为在线教学的顺利开展提供保障,而且能够让在线教学的内容得以丰富,以助力学生的全面发展和持续进步,为构建高效的师生互动机制奠定牢固的基础。文章主要采取文献研究法、调查分析法等多种研究方式,从在线教育中各个对象的需求分析切入,对教务管理工作的发展局限和发展契机做出综合考量,通过对教务管理工作现状进行分析,以在线教育的宏观背景作为借鉴,提出从教师素养、管理机制、资源引入、体系构建等多个角度进行管理优化的有效路径,为后续教务管理工作的顺利开展提供重要驱动力。     

趣味问答(英文)

1.My name is Johnson.My parents have sixchildren.Half are boys and half are girls.How manybrothers and sisters have I? 2.I am ten years old.My brother is twice asold as I am.Will my brother be twice as old asI ten years later?How old will my brother be then?     

Dynamic Wave Pressures on Deeply Embedded Large Cylindrical Structures due to Random Waves

The response of dynamic wave pressures on structures would be more complicated and bring about new phenomena under the dynamic interaction between soil asnd structure.In order to better understand the response characteristics on deeply embedded large cylindrical structures under random waves,and accordingly to offer valuable findings for engineering ,the authors designed wave flume experiments to investigate comparatively dynamic wave pressures on a single and on continuous cylinders with two different cembedment depths in response to two wave spectra ,The time histories of the water surface elevation and the corresponding dynamic wave pressures exerted on the cylinder were analyzed in the frequency domain,By calculating the transfer function and spectral density for dynamic wave pressures along the height and around the circumference of the cylinder,experimental results of the single cylinder were compared with the theoretical results based on the linear diffraction theory ,and detailed comparisons were also carried out between the single and continuous cylinders ,Some new findings and the corresponding analysis are reported in present paoer,The investigation on continuous cylinders will be used in particular for reference in engineering applications becaus information is scarce on studying such kind of problem both analytically and experimentally.