九年级数学圆及旋转题库(编辑修改稿)

九年级数学圆及旋转题库(编辑修改稿)内容摘要：

t, t he t elephone r ang. Not hi ng coul d have been m or e annoyi ng. I pi cked up t he recei ver bet ween t wo sti cky fi nger s and was di sm ayed when I r ecogni zed t he voi ce of Mr s Bat es. I t ook me t en mi nut es t o per suade her t o ri ng back later. At l ast I hung up t he recei ver . What a mess! Ther e was pastr y on m y fi nger s, on t he tel ephone, and on t he door knobs. I had no sooner got back to t he kit chen t han t he door bel l rang l oud enough to wake t he dead. Thi s ti m e i t was t he postm an and he want ed m e t o si gn f or a r egi ster ed l et t er ! Lesson55 Not a gol d mi ne 并非金矿 Dr eam s of fi ndi ng l ost tr easure alm ost cam e t r ue r ecentl y. A new m achi ne cal ed 39。 The Reveal er 39。 has been i nvented and it has been used t o det ect gold whi ch has been buri ed i n t he gr ound. The m achi ne was used i n a cave near t he seashor e wher e it i s sai dpi rat es used to hi de gold. The pir at es woul d oft en bury gol d in the cave and t hen fail t o col lect it . Arm ed wit h the new machi ne, a sear ch par ty went he di d not l ike i t. She enjoyed her sel f making t he assistant br ing al most everyt hi ng in the wi ndow bef ore fi nal ly buying t he dress she had f ir st asked f or. Lesson58 A blesi ng in di sgui se? 是因祸得福吗。 The ti ny vil lage of Fri nley is said to possess a 39。 cursed tr ee39。 . Because the tr ee was menti oned i n a newspaper, t he num ber of visit ors t o Fri nley has now i ncr eased. The t ree was plant ed near a chur ch fi ft y year s ago, but it i s onl y i n recent years t hat i t has gained an evil reputat ion. It is said that i f anyone t ouches the t ree, he wi l l have bad luck。 if he picks a l eaf , he wi l l di e. Many vi l ager s bel ieve that the t ree has alr eady clai med a number of vi ct im s. The vicar has been asked t o have the tr ee cut down, but so f ar he has r ef used. He has pointed out that the t ree i s a usef ul source of ine as tour ists have been i ng fr om al l par ts of t he countr y t o see i t. I n spi te of al t hat has been said, the ser ve her t his t im e wit h great dif fi cul ty, he clim bed into the shop window t o get the dress. As soon as she saw it, t he woman sai d s m any t ies.39。 39。 And a woman can39。 t have too m any hat s, 39。 she answer ed. Ten mi nutes lat er we walked out of t he shop t oget her . My wi fe was wear ing a hat that looked li ke a li ghthouse ! Lesson42 Not very musical 并非很懂音乐 As we had had a long wal k thr ough one of t he markets of Ol d Delhi , we stopped at a squar e to have a r est . Aft er a ti me, we noticed a snake char mer wit h two lar ge basket s at the other side of the squar e, so we went t o have a look at him. As soon as he saw us, he picked up a l ong pi pe which was covered wi th coins and opened one of t he basket s. When he began to play a t une, we had our fi rst gli mpse of t he snake. I t rose out of t he basket and began to f oll ow t he movem ent s of the pipe. We wer e very m uch sur pr ised when t he snake char mer suddenl y began t o play j az tunes and m oder n pop songs. The snake, however , conti nued to 39。 dance39。 slowl y. I t obvi ous l y coul d not tel t he di f erence bet ween Indian musi c and jaz! Lesson43 Over t he Sout h Pol e 飞越南极 I n 1929, t hree year s aft er hi s fl ight over t he Nort h Pole, the Amer ican explorer , R. E. Byr d, successf ull y f lew over the South Pol e for t he f i r st tim e. Though, at f ir st , Byr d and his m en were able to t ake a gr eat m any photogr aphs of the m ount ai ns that lay below, they soon ran i nto seri ous tr oubl e. At one point, i t seemed cert ai n that their pl ane woul d crash. I t coul d only get over t he mount ains if i t rose to 10, 00 feet. Byrd at once ordered hi s men to thr ow out two heavy food sacks. The plane was then able t o r ise and it cleared t he mount ains by 400 f et. Byr d now knew t hat he woul d be abl e t o reach the South Pol e which was 300 m il es away, for t her e were no more m ount ai ns in si ght . The ai rcr af t was abl e to fl y over t he endl ess whi te pl ai ns wit hout dif f iculty. Lesson44 Through t he f orest 穿过森林 Mr s Anne St er li ng did not thi nk of the r isk she was taking when she ran t hrough a f or est af ter two men. They had r ushed up to her whi le she was havi ng a piic at t he edge of a f orest wi t h her chil dren and tr i ed to steal her handbag. In the str uggl e, t he st rap br oke and, wit h t he bag i n t hei r possession, bot h men star ted r unni ng through t he tr es. Mr s Sterl ing got so angr y t hat she ran aft er them. She was soon out of breath, but she cont inued to run. When she caught up wit h them, she saw that the y had sat down and were goi ng thr ough t he cont ent s of the bag, so she ran st raight at t hem . The men got such a fr ight that they dropped the bag and ran away. 39。 The str ap needs mending,39。 sai d Mr s Ster li ng later , 39。 but t hey di d not st eal anything.39。 Leson45 A cl ear consci ence 问心无愧 The whole vi l age soon learnt t hat a l ar ge sum of money had been l ost . Sam Benton, the local but cher , had l ost his wal let whil e t aki ng his savi ngs t o t he post off ice. Sam was sure t hat t he walet must have been found by one of the vi l agers, but i t was not r etur ned t o him . Thr ee months pased, and t hen one m or ning, Sam f ound hi s wal et outsi de hi s fr ont door . I t had been wr apped up i n newspaper and it cont ained hal f the m oney he had lost, t oget her wi th a not e which said: 39。 A thi ef , yes, 39。 but onl y 5o per cent a t hi ef! 39。 Two months l at er, som e mor e money was sent to Sam wi th another not e:39。 Only 25 per cent a t hief now!39。 I n ti me, al l Sam 39。 s money was paid back in this way. The last not e sai d:39。 I am 100 per cent honest now! 39。 lesson46 Expensi ve and unfortabl e 既昂贵又受罪 When a plane f rom London ar ri ved a。