一、电场强度与电势梯度(gradient)

一、点电荷电场的电势(electric potential) 点电荷电场力作功

自由程(free path) 自由程:分子两次相邻碰撞之间自由通过的路程

一、自由度(degree of freedom) 分子平均平动动能

一、质点系的动能定理(theorem of kinetic ）

一、万有引力、重力、弹性力作功的特点 (1)万有引力(universal gravitation)作功 以m为参考系,m的位置矢量为r. m对m的万有引力为

提纲 例子 社会 (政治、战争、医疗) 公益性组织(再就业中心和孤儿院、大学)

1) To listen to and then talk about business successes 2) To read about brand names 3) To write about a brand-name product 4) To practice reading skills: conceptual meaning 5) To learn and practice paragraph development by process 6) To practice Translating skills: Omission 7) To Learn to write advertisements 8) To visit Culture Salon about brand-name products

1. Listen and talk about travel 2. Read about what can be learnt from traveling 3. Write an introduction to your home town 4. Practice reading skills: pragmatic meaning 5. Practice translating skills: synthesis 6. Learn and practice paragraph development by comparison and contrast 7. Learn to write a trip itinerary

1. Listen and talk about the problem of drug abuse 2. Read about the disastrous effects of Ecstasy 3. Write about the risks of taking drugs or other harmful substance 4. Practice reading skills: text cohesive devices 5. Practice translating skills: translation of “it” 6. Learn and practice paragraph development by cause and effect 7. Learn to write a public warning message