高中物理重难点知识突破含详细的例题及解析(编辑修改稿)

高中物理重难点知识突破含详细的例题及解析(编辑修改稿)内容摘要：

. 39。 Cer tainl y, 39。 t he gir l sai d, 39。 but t hey ar e f or next Wednesday39。 s per for mance. 39。 I m ight as wel l have t hem ,39。 I said sadly. Leson20 One m an in a boat 独坐孤舟 Fishing i s my f avour it e spor t. I oft en fi sh for hours wi thout cat chi ng anyt hing. But t his does not wor ry me. Som e fi sherm en ar e unlucky. I nst ead of catching f ish, they catch old boot s and r ubbi sh. I am even l ess l ucky. I never cat ch anyt hi ngnot even old boot s. Af ter having spent whole mornings on t he ri ver , I al ways go home wi th an empt y bag. 39。 You must gi ve up fi shi ng! 39。 my f ri ends say. 39。 It 39。 s a waste of t ime.39。 But they don39。 t r eali ze one impor tant thing. I39。 m not real y i nt erested i n fi shi ng. I am onl y int erest ed in si t ing i n a boat and doing not hi ng at al l ! Lesson21 Mad or not? 是不是疯了。 Aeroplanes ar e slowl y dri ving me mad. I l ive near an ai rport and pasing pl anes can be hear d night and day. The ai r por t was built dur ing t he war , but f or som e reason i t coul d not be used then. Last year , however, i t came i nto use. Over a hundred people must have been dri ven away fr om t hei r hom es by the noise. I am one of t he few people left . Som et im es I t hink t his house wi l l be knocked down by a passing pl ane. I have been off er ed a l ar ge sum of money to go away, but I am determ ined to st ay her e. Ever ybody says I m ust be mad and t hey ar e probabl y r ight. Lesson22 A gl ass envelope 玻璃信封 My daught er, Jane, never dreamed of receiving a let er f r om a gi rl of her own age i n Hol land. La st year, we were t ravel ing across the Channel and Jane put a piece of paper wi th her name and addr ess on i t i nto a bot tl e. She t hr ew t he bot tl e int o t he sea. She never t hought of it agai n, but t en months lat er , she r ecei ved a let er f rom a gir l in Holl and. Both gi rl s wr it e to each other regularl y now. However , they have decided t o use the post of fi ce. Let ers wi l cost a l it t1e mor e, but t hey wi l cert ainly tr avel faster. Leson23 A new house 新居 I had a l et ter fr om m y sister yest er day. She l ives in Ni geri a. I n her let er , she said that she would e to Engl and next year . I f she es, she wi l get a sur pri se. We ar e now l iving in a beauti ful new house i n the countr y. Work on it had begun befor e my si st er l eft . The house was pleted f ive mont hs ago. In my l et ter , I t old her that she could st ay wit h us. The house has m any l arge r oom s and there i s a lovely gar den. It i s a very m oder n house, so it looks str ange t o som e people. I t must be t he onl y modern house in t he distr ict . Lesson24 It coul d be worse 不幸中之万幸 I ent er ed the hot el manager 39。 s of fi ce and sat down. I had just lost amp。 50 and I fel t ver y upset. 39。 I l eft t he money i n my room, 39。 I said, 39。 and it 39。 s not there now. 39。 The manager was sympat het ic, but he could do nothi ng. 39。 Ever yone39。 s l osi ng money these days,39。 he sai d. He st art ed to plai n about thi s wicked wor ld but was int er rupt ed by a knock at the door. A gir l came in and put an envelope on his desk. I t cont ai ned amp。 5o. 39。 I found t hi s outside t hi s gent leman39。 s r oom39。 she sai d. 39。 Wel l,39。 I said t o the m anager, 39。 t her e i s st il l some honest y in this worl d !39。 lesson25 Do the Engl ish speak English? 英国人讲的是英语吗。 I ar ived in London at last. The r ai lway st at ion was bi g, bl ack and dark. I did not know t he way to m y hotel, so I asked a por ter. I not onl y spoke Engl ish ver y caref ul ly, but ver y clearl y as wel . The por ter, however , coul d not understand me。 I r epeated my questi on several ti mes and at l ast he under stood. He answered m e, but he spoke neit her slowl y nor cl ear ly. 39。 I am a for eigner ,39。 I sai d. Then he spoke sl owly, but I could not under stand him. My t eacher never spoke Engl ish l ike t hat ! The por ter and I looked at each other and smi led. Then he said somet hing and I under st ood it . 39。 You39。 l l soon learn Engl ish!39。 he sai d. I wonder. I n England, each man speaks a dif f er ent l anguage. The Engli sh underst and each other, but I don39。 t understand t hem ! Do t hey speak Engl ish ? l esson26 The best art cri ti cs 最佳美术评论家 I am an ar t st udent and I pai nt a l ot of pi ct ures. Many people pr etend t hat t hey under stand modern ar t. They always tel l you what a pi ct ure i s 39。 about 39。 . Of course, m any pi ct ures arc not 39。 about39。 anyt hing. They ar e just pr et y pat ter ns. We li ke them i n t he same way that we li ke pret y curt ai n mat er ial . I t hink t hat young chi ldr en of ten appreciat e moder n pi ct ures bet ter t han anyone el se. They notice m ore. My sist er i s only seven, but she always t el ls m e whet her m y pict ur es ar e good or not . She came into my r oom yest er day. 39。 What are you doing ?39。 she asked. 39。 I 39。 m hanging t his pict ure on t he wal ,39。 I answered. 39。 I t39。 s a new one. Do you l ike i t ?39。 She l ooked at it cri ti cal ly f or a moment. 39。 I t39。 s al ri ght,39。 she sai d, 39。 but i sn39。 t i t upside down ?39。 I l ooked at it agai n. She was r ight ! It was! Lesson27 A wet night 雨夜 Late in t he af ter noon, the boys put up their t ent in the mi ddle of a f ield. As soon as this was done, they cooked a meal over an open fi re. They were al l hungr y and the f ood smel t good. Aft er a wonder ful meal, t hey t old st or ies and sang songs by the camp f ir e. But some t ime later it began to r ain. The boys f elt t i r ed so t hey pet out the f ir e and cr ept i nto t hei r tent. Their sleepingbags were war m and f ort abl e, so t hey al l sl ept soundl y. I n t he middle of t he night, t wo boys woke up and began shout ing. The tent was f ull of water ! They al l leapt out of their sleepi ngbags and hur ri ed out si de. I t was rai ni ng heav。