剑桥（join in）版四年级英语下册电子教案_Unit 2 Friends 教学设计（5a,5b,6）

１．掌握椭圆的几何性质：范围、对称性、顶点、长轴、短轴、离心率； ２．掌握椭圆标准方程中 a、b、c 关系； ３．能根据条件利用工具画出椭圆．

一、弦的横振动: 1、物理模型:细长柔软弦,紧绷于A、B之间,做微小横振动,求运动规律 2、分析:

Graphs(review) Definition. a directed graph(digraph G=(, E)is an ordered pair consisting of a set y of vertices(singular: vertex) a sete c× of edges. In an undirected graphG=(V, E), the edge set e consists of unordered pairs of vertices In either case, we have El=O(v2).Moreover if G is connected, then E2v-l, which

一、简答题(共5题,每题4分,共20分) 1、写出判断一个整形变量κ能被5整除但不能被7整除的逻辑表达式 2、用循环语句编程实现从二维数组 a[3][4]={{2,4,5,7},{3,12,8,11},{8,1,0,19},{10,6,15,13 };中找出最大数 3、下面程序中的swap函数能否实现变量a和b值的互换,如不能,请重新编写一个函数实现变量a和b值的互换

一、 投票悖论 1、 三个不同的公共品供给水平：A、B、C 2、三个消费者：偏好序

hool of Business, Sun Y at-sen University L 2 Economic Transactions and Accounting equation Exercises 1. Lion Company had a net cash inflow of $80,000 from operating activi

hool of Business, Sun Y at-sen University L 2 Economic Transactions and Accounting Equation Self-Test Multiple choices 1. The ownership structure of a business includes the following forms

Part I: Fill-In-The-Blanks(10\2=20 points) 1. The branch of accounting which aims at serving external users is called accounting 2. A credit entry decreases asset and accounts or increases liabi owner's equity, and revenue accounts

一、支气管肺炎 1、原因 2、病理变化(如图) (1)、眼观变化 (2)、组织学变化 A、初期 B、中期 C、后期