一、图是一种模型,如公路、铁路交通图,通讯网络图等。 二、图示对现实的抽象,以点和线段的连接组合表示

Try to find out all expressions showing graceful hands” in our text.How many times? Find out words of Mrs. Clark Pick out descriptions about ward and Mrs Clarks physical conditions

1原子的基本结构 2原子结构的历史回顾 3现代原子结构学说的实验基础

Lead-in Questions 1. Are you iron deficient 2 How would you know? a, tired b have reduced ability to exercise. C have poor stamina d get frequent infections e are lethargIc

Leading-in Activities: Discussion 1. What's your definition of money? 2. What attitude should we take toward money? 3.what’ your fantasy?

Lead-in Questions 1. Are you iron deficient 2. How would you know? a. tired b. have reduced ability to exercise. C. have poor stamina d. get frequent infections e. are lethargic

Leading-in Activities: Discussion 1. What's your definition of money? 2. What attitude should we take toward money? 3.What’ your fantasy?

Teaching Content Section a choose to be Alone on Purpose Sectionb roommate Contlicts Listening part

Helpful Information Telecommunications Optical fiber( the medium and the technology associated with the transmission of information as light pulses along a glass or plastic wire or fiber. Information age Information superhighway

一、 Duality对偶 二、 Dual Problem对偶问题 三、 Dual Linear Programming 四、对偶线性规划 五、 Dual Theory对偶理论