关于猫、黄金、老头和金字塔的三个不同故事

两位考古专家一同前去参观金字塔,晚上便住在开罗市郊的一家小旅馆里,一个人留在房间里面写工作日记,另一个人就上街闲逛。他在路边发现有一个老妇人在卖一只黑色的工艺猫,要价1000元。他忽然发现这只猫的两只眼睛竟是两颗大     

基于国家教育标准的地理教材

为进一步增强美国地理教育。我们要做的许多事情之一就是改进教材的质量。其中最主要的三个方面的任务是:(1)开发优良的教材,(2)利用教师联盟的在职培训网络和职前教育计划培训教师使用这种新教材,(3)通过提供强有力的课程指导,特别是将教材与师资培训和基于国家     

心路历程--流逝的岁月

Old age gives us the privilege to explore, to innovate, to challenge.Dear Friends,This is our twelfth monthly column and the first-year anniversary of our conversation together in the pages of Overseas English. We call this a milestone in English. Is there a Chinese word for it?I would like to begin our column with one of my own poems.     

加拿大住家保姆计划

作为加拿大住家保姆的资格 专门的加拿大住家保姆计划的目的是:当没有足够的加拿大人去从事这个工作时,引入外国人到加拿大做住家保姆工作。 当申请成功者接到加拿大雇佣授权,允许他们到加拿大作住家保姆的工作,到加拿大后,三年内必须完成两年这样的雇佣,才能向加拿大     

英国《化学习题精选》(一)

《化学习题精选》是英国中学化学教师为学生提供复习和提高作业质量而编的。它的特点有:1.围绕题目编成一系列短小的问题。这些问题系按照英国现用的教材结构编写的;由浅入深,由易到难,逐步引导学生的学习兴趣;可在课内外用作讨论或练习之用。2.作者将各小题划分为三种类型:(1)知识性(以K表示),理解性(以C表示)及综合性(以H表示)。每小题都注明评分标准,用以了解学生的知识水平和分析问题、解决问题的能力。本书共有一百题,我们根据我国中学化学教学大纲的内容选译部分习题,供教师们参考、选用。选译习题中也略有超我国教材水平的,可作因材施教之用。习题的后面,附有用数字回答问题的答案。     

学习领域和教学组织与安排

目前,教育界人士对职业学校的专业课程各持己见。有人认为职业技术培训过于理论化岸生无法在课堂上学到足够的应用性知识。所以,提出一个以     

Joint rate control and scheduling for wireless uplink video streaming

INTRODUCTION Video streaming is becoming one of the major driving forces of next generation wireless networks. For the currently deployed cellular networks, the practical data rates are not enough to support full rate, high quality video applications. As a result, many research efforts have been devoted to adapting video content to reconcile the conflict between the high demand of video quality and the limited wireless communication resources among users. A large body of literature utiliz…     

北太平洋巨型章鱼

北太平洋巨型章鱼是170余种巨型章鱼中的一种。人们曾经误把它们看成为海怪,实际上,它们性格平和,并不像古老传说描述的那样会攻击船只。     

Choice and goal-directed behavior in preschool children

Preschool children (3–4 years old) were trained to perform two actions to gain different outcomes, in the form of video clips from different cartoons, before one of these outcomes was devalued by noncontingent exposure. The effect of outcome devaluation was subsequently assessed in an extinction test by giving children the opportunity to perform both actions in the absence of any outcomes. When the two actions were trained concurrently, performance during the test was modulated by outcome value and children showed a preference for the action trained with the currently valued outcome. By contrast, when each action was trained separately on different trials, test performance was insensitive to outcome devaluation. These effects of the training schedules are interpreted in terms of dual-process theories of action control.     

我的吻在哪里

小女孩儿名叫辛迪。她有一个和睦的家,日子过得很不错。但这个家从一开始就缺少了一样东西,只不过辛迪还没有意识到。辛迪9岁那年,有一天到朋友德比家去玩儿,留在那儿过夜。睡觉时,德比的妈妈给两个女孩儿盖上被子,并亲吻了她们,祝她们晚安。"我爱你。"德比的妈妈说。"我也爱你。"德比说。辛迪惊奇得睡不着觉。因为在这之前从没人吻