【正文】 I l ooked at it agai n. She was r i ght ! It was! Lesson27 A wet ni ght 雨夜 Lat e in t he aft er noon, t he boys put up t heir t ent i n t he m iddle of a f i el d. As soon as t hi s was done, t hey cooked a m eal over an open f ir e. They wer e al hungr y and t he food sm elt goo。but i sn39。s al l ri ght ,39。 She l ooked at i t cri ti cal y f or a m oment.39。I t 39。m hangi ng t hi s pict ur e on t he wal l,39。 she asked. 39。 anyt hi ng. They ar e just pr et t y pat ter ns. We li ke t hem i n t he same way t hat we li ke pret y curt ai n m at er i al. I t hink t hat young chi l dr en oft en appr eci at e modern pi ct ures bet er t han anyone el se. They noti ce m ore. My si st er i s only seven, but s he al ways t el l s m e whet her my pi ct ures ar e good or not. She cam e i nt o m y room yester day. 39。. Of cour se, m any pi ct ures arc not 39。t under st and them ! Do t hey speak Engl ish ? l esson26 The best art crit i cs 最佳美術(shù)評(píng)論家 I am an art st udent and I pai nt a l ot of pi ct ures. Many peopl e pr etend t hat t hey under st and m oder n art . They al ways tel you what a pict ur e i s 39。l l soon l ear n Engli s h!39。 I said. Then he spoke slowl y, but I coul d not underst and him . My t eacher never spoke Engli sh l i ke t hat ! The port er and I l ooked at each ot her and sm il ed. Then he sai d som ethi ng and I underst ood i t. 39。 I r epeated m y questi on sever al ti mes and at l ast he under stood. He answer ed m e, but he spoke neit her sl owl y nor cl earl y. 39。t her e is sti l som e honest y in t his wor l d !39。Wel, 39。s r oom39。 5o. 39。s l osi ng m oney t hese days, 39。 The m anager was sympat heti c, but he coul d do nothi ng. 39。and it39。 I l ef t the m oney i n my r oom ,39。s off i ce and sat down. I had just l ost amp。t r eali ze one i m port ant t hing. I39。s a wast e of ti me.39。 m y f ri ends say.39。 I said sadly. Leson20 O ne m an i n a boat 獨(dú)坐孤舟 Fishi ng i s m y f avouri t e sport . I oft en fi sh f or hour s wi thout cat chi ng anyt hi ng. But t hi s does not worr y m e. Some f isherm en ar e unl ucky. I nst ead of catching f ish, t hey cat ch ol d boots and r ubbi sh. I am even l ess l ucky. I never cat ch anyt hi ng not even ol d boot s. Af ter havi ng spent whole m or ni ngs on t he ri ver , I al ways go hom e wit h an empt y bag. 39。s perf orm ance. 39。t he gi rl sai d, 39。 I asked. 39。 t he gir l sai d. 39。 he asked. 39。 分析它受到周圍其他物體對(duì)它的作用力 excl aim ed. Just t hen, a m an hur ri ed to t he ti cket off i ce. 39。 ： 整體法和隔離法 ： 各種性質(zhì)力的產(chǎn)生條件及各力方向的特點(diǎn) 整體法 隔離法 概念 將幾個(gè)物體作為一個(gè)整體來(lái)分析的方法 將研究對(duì)象與周圍物體分隔開(kāi)的方法 選用原則 研究系統(tǒng)外的物體對(duì)系統(tǒng)整體的作用力 研究系統(tǒng)內(nèi)物體之間的相互作用力 注意問(wèn)題 分析整體周圍其他物體對(duì)整體的作用。受力分 析就是分析物體受到周圍其它物體的作用。這樣勢(shì)必在學(xué)生心理上會(huì)形成障礙。 教師的教學(xué)要求和教學(xué)方法不當(dāng)造成難點(diǎn)。 受力分析時(shí)除了將各力的產(chǎn)生要求、方向的判斷方法熟練掌握外，同時(shí)還要與物體的運(yùn)動(dòng)狀態(tài)相聯(lián)系，這就需要一定的綜合能力。 有些力的方向比較好判斷，如：重力、電場(chǎng)力、磁場(chǎng)力等，但有些力的方向難以確定。 her mother a f ree dress once a week ! l eson33 Out of the darkness 沖出黑暗 Near ly a week passed bef ore t he gir l was able to explain what had happened to her . One aft er noon she set out f rom the coast in a smal boat and was caught in a st orm. Towar ds evening, the boat st ruck a r ock and t he gir l j umped int o the sea. Then she swam t o the shore af ter spending t he whol e night in the wat er . Duri ng that ti me she covered a di st ance of eight mi les. Ear ly next morni ng, she saw a li ght ahead. She knew she was near t he shore because t he li ght was high up on the cli f s. On ar iving at t he shore, t he gi rl str uggl ed up the cl if f towards t he li ght she had seen. That was al she remembered. When she woke up a day lat er , she f ound her sel f 高中物理重難點(diǎn)知識(shí)突破 （主要包括：高中物理的 力 、 功與能 、 電學(xué)實(shí)驗(yàn) 、 帶電粒子在磁場(chǎng)中的運(yùn)動(dòng) 部分，有 詳細(xì)的例題解析和總結(jié) ） 一． 力 一、難點(diǎn)形成原因： 力是物體間的相互作用。s bi cycl e! Lesson32 Shopping m ade easy 購(gòu)物變得很方便 People ar e not so honest as they once were. The tempt at ion t o steal is gr eater t han ever bef ore especial y i n lar ge shops. A det ect ive r ecentl y watched a wel l dr esed woman who al ways went i nto a large stor e on Monday mor ni ngs. One Monday, there wer e f ewer people i n the shop than usual when t he woman cam e in, so it was easi er f or the de tecti ve to wat ch her . The woman f ir st bought a f ew smal ar ti cl es. Af ter a l it le tim e, she chose one of the m ost expensi ve dresses in the shop and handed it t o an asistant who wr apped i t up for her as qui ckl y as possible. Then the wom an si mply t ook the pa rcel and walked out of t he shop wi thout payi ng. When she was ar est ed, t he det ect ive f ound out that the shop asi st ant was her daughter. The gi rl 39。s fi rst pasenger was a doctor who f lew f r om Bi rm ingham to a lonely vi l age i n t he Welsh mountai ns. Since t hen, Capt ain Fawcet has fl own pasenger s to many unusual places. Once he landed on the r oof of a bl ock of f lat s and on anot her occasion, he landed in a deser ted car par k. Capt ain Fawcet has just r efused a str ange r equest f rom a busi nessman. The man wanted to fl y to Rockal , a lone ly i sland in the At lanti c Ocean, but Capt ai n Fawcet t did not take him because the t ri p was too danger ous. Leson30 Foot ball or polo? 足球 還 是水球？ The Wayle i s a smal ri ver t hat cuts acr oss t he par k near my hom e. I l ike sit ti ng by the Wayl e on f ine aft ernoons. I t was war m last Sunday, so I went and sat on the r iver bank as usual . Som e childr en were pl ayi ng gam es on the bank and there we r e som e peopl e rowi ng on the r iver . Suddenl y, one of t he chi ldren ki cked a bal l ver y har d and it went towar ds a passing boat. Some peopl e on t he bank cal ed out t o the m an in t he boat , but he did not hear t hem . The bal l st ruck him so har d t hat he near ly fel i nto t he water . I t urned to look at the chil dr en, but ther e weren39。Pi l at us Por ter 39。t axi39。 No Par king39。t i t upside down ?39。 she sai d, 39。 I t39。s a new one. Do you