(1) 说明校园内外为什么要开展宪法宣传教育。
(1)求第一次碰撞前瞬间小物块l的速度;
(2)设第 5 次碰擅前的瞬间运动物块的动能为Ek5,第 5 次碰撞过程中系统损失的机械能为 E 损 5,求 E 损 5和 Ek5 的比值。
试题">如图所示,有n(n>6) 个相同的小物块(可视为质点)静止在倾角为θ的倾斜轨道上,物块与轨道间的动摩擦因数均为μ。每个物块的质量均为m ,相邻物块间的距离均为 l 。使第 1 个物块以某一初速度v0 沿轨道开始下滑, 在每次发生碰撞时物块都立即粘合在一起运动,且碰撞一直能持续下去,重力加速度为g。
(1)求第一次碰撞前瞬间小物块l的速度;
(2)设第 5 次碰擅前的瞬间运动物块的动能为Ek5,第 5 次碰撞过程中系统损失的机械能为 E 损 5,求 E 损 5和 Ek5 的比值。
“Early to bed ,early to rise ”makes a man healthy, wealthy and wise.It's good for the body.This is an old saying . Have you heard of it before? It means that we must go to bed early at night,and get up early in the morning.Then we shall be healthy.We shall also be rich and clever.That is true .The body must have enough sleep to be healthy.Children of young age should haveenough sleep ,or they can't do their work very well. They will not be wise and they may not become。wealthy! .The body also needs exercise: walking, running, jumping, swimming, playing games and all other。exercise .Exercise keeps the body strong. Exercise also helps the blood to move around inside the.body .This is very important.Our blood takes food to all parts of our body.The head also needs.blood .Exercise helps us to think better.
根据短文内容 ,回答问题.
1.What does “early to bed .early to rise ”mean?
2.What must the body have to be healthy?
3.What will happen to Children of young age who don't have enough sleep?
4.What keeps the body strong?
5.What takes food to all parts of our body?
简述清末日本学前教育与西方学前教育对中国学前教育的不同影响。
活动中,同学们瞻仰人民英雄纪念碑,齐诵碑文,参加首都少年先锋岗活动,缅怀先烈。活动后,同学们开展“感悟民族精神,捍卫英烈荣光”的主题讨论会。
(2)运用依法治国的相关知识,说明应如何“捍卫英烈荣光”。
试题">某校同学参加纪念英烈的社会实践活动。活动前,同学们学习《中华人民共和国英雄烈士保护法》。
活动中,同学们瞻仰人民英雄纪念碑,齐诵碑文,参加首都少年先锋岗活动,缅怀先烈。活动后,同学们开展“感悟民族精神,捍卫英烈荣光”的主题讨论会。
(2)运用依法治国的相关知识,说明应如何“捍卫英烈荣光”。
简述学前儿童语言流畅度异常的观察应包括哪些内容?
简答侵权责任的特征。
北京和呼和浩特相距660千米. 一列火车从呼和浩特开出,每时行驶48千米; 另一列火车从北京开出,每时行驶72千米.两列火车同时开出,相向而行,经过几时相遇?两车相遇时,从北京开出的火车比从呼和浩特开出的火车多行了多少千米?
试分析幼儿园教育活动设计的基本特征。
简述被宠物咬伤后的正确处理方法。