Chapter 3 Kinematics I: rectilinear motion Motion implies change, and it is change make life-and physics-visible and interesting. Kinematics is the theory about the description of motion. Physical theories are creations of the human intellect; they must be invented rather than discovered

外研版（三起）（2012）小学英语四年级下册Module 7 Unit 1 I helped Mum.课件(5)

Social welfare function W: Rn-R gives social utility W(u1, u2,. un ). W is strictly increasing is socially optimal if it solves max Wu(a1), u2(a2),., un(n) st>Tis>w Proposition 1.29. If is SO, it is PO. I Proposition 1. 30. Suppose that preferences are continuous, strictly monotonic, and strictly convex. Then, for any PO allocation x* with >>0,v i, there exist ai

(1)i(p, u) is zero homogeneous in p (2) substitution matrix: Dpi(p, u)<0 (3)symmetric cross-price effects: 23i(p 2=2z(p, u) (4) decreasing:=n≤0

Unit 9 Are Dreams as Vital as sleep? I Objective Unders tanding \Dreams ts movement Aware some famous theories of dreams I Time arrangement Text:2 hour o Discussion: 0.5 hour Ⅲ Related Information History of Dreams

外研版（三起）（2012）小学英语四年级下册Module 7 Unit 1 I helped Mum.教案

Theoretically speaking, the early-airport arrivals should be rewarded while the late airport ones should be punished. But this usually isnt the case. And there are such people who pay off their taxi only just before boarding, but still get their luggage first when landing. To my great embarrassment, early as I arrived, I

外研版（三起）（2012）小学英语四年级下册Module 7 Unit 1 I helped Mum.教案(6)

Unit 1 Book Three Unit One Section A The Expensive Fantasy of lord williams I Greetings I Review. 1. Key words section A: survival, sorrow, ancient, endure, channel, invade, surrender, historic, cast crash, commuter, suburb, resolution, exhaust, rescue, wreckage, decent section B: innocent, drift, mere, explode, expose, sector, layout, sway, uneasy, heal glimpse, flesh, heir

外研版（三起）（2012）小学英语四年级下册Module 7 Unit 1 I helped Mum.教案(2)