15-16-2期末复习

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15-16-2学期大学英语4-4期末复习

15-16-2大学英语4-4期末复习V ocabularyⅠ. 1. Fill in the gaps with words or phrases chosen from the box. Change the form where necessary.（给小费）her.---intellectually（智力方面地）, emotionally（情感方面地）.of the building hasn’t suffered（受损害）, the surface (表面4) She received an increase in pay and it has in her attitude towards work.（她工资增加了，这使她对工作的态度发生了大的变化）very nervous one evening. I asked her what was wrong, and sheso amusing（有趣的）and funnythatso you’ll know to whatextent you are making progress.预期的，可能的）buyer to make themselves more persuasive（南极）.（眼中闪烁着热情洋溢的光芒）as she（产生效果）in her College English class.11) In my senior year（大四）success.（freshman; sophomore; junior; senior）12) To reduce weight, I am nowplays like a professional（职业高尔夫运动员）.2. Use the verb in brackets to form an appropriatephrasal verb you have learnedandcomplete the sentence with it:Modal:Was he planning to the interview with another letter indicating his eagerness to join us? (follow)Was he planning to follow the interview with another letter indicating his eagerness to join us?（不管）what others may say. (go)3) Most of the old buildings were pulled down（被拆毁）blocks（方块，这里指“街区”）of new apartments（公寓）motivation（激励）or prospect（期望）that means something to their offspring.（build）6) To my mind, it is very important your letter and résumé(个人简历7) Before we set off trip, our five-year-old asked, “Can themicrowave野营地), Dad?”8) She tried to swallow, but couldn’t, her tUnit FourVocabularyⅠ. 1. Fill in the gaps with words or phrases chosen from the box. Change the form where necessary.1) The general（将军，上将）ordered his troops to move quickly towards an advantageous position.2) People would think the seven-year-old couldn’t even reach the pedals (踏板，脚蹬子), let alone drive the car. Nevertheless（然而）, he made it!3) In a sense（在某种意义上）, we are witnessing the vanishingof national boarders in many areas of economic activity in the world today.4) The tower built at the turn of the century became a landmark of the city.5)In a book entitled A Short History of Nearly Everything, Bill Bryson tries to ignite （激起）a passion for knowledge in young readers.6) It seems neuroscience（神经系统科学）is threatening to displace physics as the queen of the science.7) It is only natural for the people to challenge the Establishment, especially when the economic outlook is gloomy（前景黯淡的；悲观的）.8) If anything（如果有什么区别的话）, this movie appeals to（呼吁；对…有吸引力）thepatriotic feelings of the people and helps to strengthen national unity（国家统一）.9) Julius Caesar in this play is a man full of contradictions, at times strong and confident, but at other times old and frail（脆弱）.10) The newly launched website aspires to create a virtual community（虚拟社区）ofcommon interest via exchange of views on the future of the Internet.11) What Ann advocates（提倡）//shows how divorced from reality she has become.12) After investigating the behavior of pendulums, Galileo was able to use them astime measurement devices in many of his experiments.2. Use the verb in brackets to form an appropriatephrasal verb you have learnedand replace with it the italicized part in each of the following sentences:Modal:My daughter is very keen and totally absorbed in the Internet and I think that it is mad, bad and dangerous. (hook)My daughter is hooked on the Internet and I think that it is mad, bad and dangerous.1) I’ve thoughtthat it must have been an accident. (come)(doze)（航空工业）,（激进的）views on gender equalitya region of space with a gravitational field so powerful that it7) The Green Party（绿色和平组织）said plans to clean up the environment were doomed（注定要失败的）unless the government gave an immediatecash injection （资金投入）to the departments responsible for enforcement（执行）. (clean)8) For sheer lack of space and resources the local drug addition center (戒毒中心)has to turn away（= refuse）drug-addicts (吸毒者) who are begging for admission.Unit 5V ocabularyⅠ. 1. Fill in the gaps with words or phrases chosen from the box. Change the form where necessary.in discovering reliable and useful laws of natureis that all nature is（销售部经理）at our Paris office. Ifjob.5) Plastics（塑料）light as wood.6) Coat the shoes with polish（抛光剂）shine.joke to them, but it wasn’t funn y to me at all.,which（take…for granted:把…看作理所当然的）9) The waitress did bring us clean plates eventually (=finallyarms and legs to stay afloat（漂浮的）, which, however, disappear within a few months after birth.randfather’s gold watch in secret.2. Use the verb in brackets to form an appropriatephrasal verb you have learnedand complete the sentence with it:Modal:I suppose you never him in London. (come)I suppose you never came across him in London.urgent demands her attention, Amandaisn’t smart. (stick)=pleasant)memories. (bring)looking for a job. (go)but I just didn’t understand what he6) Granny folded up (把…折叠起来) the towels（毛巾）and them thecupboard（柜橱）. (put)mind. (turn)(take)15选employer when you go for andemonstrate（=show）all about the firm (公司), for example, to show that youof products chief it isin a spontaneous (= natural，自然的)are not frightened by new toofjust ApplyDavos is a small Alpine city in eastern Switzerland which began making itself known in the 1990s for hosing the World Economic Forum, an annual gathering of politicians, financiers and academics (1). Each year, those taking part spend five days there networking (2) and discussinga variety of(3) issues such as the global supply of oil, world economic growth(4) and environmental problems.Davos Men share the belief that globalization is both welcome and unstoppable. They would like to see national boundaries vanish(5) so as to facilitate(6)their global operations. Some people say that this international perspective is a minority elitist position not shared by the majority of people. Others, however, argue that endorsing(7) a global outlook(8) does not mean sweeping aside(9) one’s patriotic(10)feelings or erasing(11) one’s national identity. The question, perhaps, is whether it is possible to strike a balance(12) between being global and being local.You see that to have committed ：致力于）is farTo , I wouldn’t attempt it. I dare say are’tmyself, but I wouldn’t attempt ’t look. However, it seems like he had no choice. Heif he did the swim. That was another surprise.（守规矩的）man, kind to everybody. Perhapsappearances can be.背诵段（Unit 3）When I graduated from college, the odds were good that I would have the same job for the rest of my life. And that's how it worked out. But getting hired is no longer a once-in-a-lifetime experience. Employment experts believe that today's graduates could face as many as ten job changes during their careers.我大学毕业时，我极有可能终身从事同一个工作。

历史期中期末复习15至16世纪西欧社会演变

颁布《法国民法典》
正义（反侵略）
非正义（争霸、侵略）
评价
17-18世纪资产阶级革命时代
国别
时间
领导
背景
斯图亚特王朝专制统治阻碍资本主义的发展
过程
开始初胜复辟胜利独立
成果
特点
意义
英国
资产 1640 阶级 1688 1689 新贵族
《权利法案》
早、妥协、宗教色彩
稳定发展
美国法国
割据一方，手握实权。
随着城市复兴，形成分裂割市民阶层产生，据、一盘散并开始争取城沙局面市自治。增长：可以参加等级代表会议，掌握赋税批准权增长：市民阶层上层演变为资产阶级。有效改变了西欧的混战割据，促进了经济推行重商主义，打击贵族，促进统一和经济
等级君主制时期
二、独立战争的进程
1、开始标志：1775年4月，波士顿的“列克星敦枪声” 2、宣布组建领导机构：第二届大陆会议（武装独立；大陆军；华盛顿政权核心） 3、宣布独立：1776年7月4日，杰弗逊等《独立宣言》：利用“天赋人权”理论，反对英殖民统治评价：第一个人权宣言 4、转折性战役：1777年，萨拉托加大捷 5、结束：1783年，约克镇战役，康华里向华盛顿投降 6、正式独立：1783年，美、英《巴黎和约》（美领土范围：密西西比河以东）
三、独立战争的性质、作用（评价） 1、性质：两个性质（1）反英殖民统治的民族解放战争（2）建立资本主义制度的资产阶级革命 2、作用：（1）实现美国独立发展资本主义的道路（建国、发展）（2）成为拉美独立运动的榜样（世界意义）
四、建立制度——联邦制度的确立
1、邦联制度 2、联邦制度的建立

15期末成教大专英语复习题(3)(1)

15级成人大专英语期末复习题I . Choose the best answer1. Mary has lost the key __b_____ the back door.A. ofB. toC. forD. by2. We are looking forward to ____a_ you soon.A. hearing fromB. hear fromC. hearing ofD. hearing about3. Some people don’t know the value of health _____d_ they lose it .A. whenB. ofC. forD. until4. Those dishes taste _____a__.A. goodB. rightC. wellD. wonderfully5. ____b__ happens, the first important thing is to come to class ontime.A. WhatB. WhateverC. HowD. Which6. If it ____c___ tomorrow, I will go boating with my friends.A. isn’t rainingB. won’t be rainingC. doesn’t rainD. won’t rain7. Bob forgot his term paper, _______c__ his partner.A. so doesB. neither didC. so didD. either did8. Buses go to the airport ____a____.A. every five minutesB. each five minutesC. every five minuteD. each five minute9. He doesn’t earn much money. He is just a __d______ in the company.A. managerB. general engineerC. directorD. clerk10 They __a____ t o the movies quite frequently when they were young.A. used to goB. got used to goC. got use to goingD. used to going11. The two words, though phonetically ____c___, are spelt differently.A. likelyB. likingC. alikeD. like12. The money will be used to provide the school _a_____ new computer equipment.A. withB. forC. toD. after13. They held a grand party to ___c___ the huge success of theirresearch.A. greetB. celebrateC. congratulateD. appreciate14. He took a look at my new watch and said it was a good __d____.A. conditionB. priceC. qualityD. bargain15. We’ve got a team of experts working on the problem. Let’s wait andsee what they’ll ___b___.A. come around withB. come up withC. come through withD. come down with16. This will ___b__ us to maintain our position as market leader.A. entertainB. enableC. exchangeD. expect17. The government has promised to __a___more money on education.A. spendB. costC. saveD. pay18. “A good man has been taken from us,” she said, struggling to ___d__tears.A. dry outB. pull outC. look forD. keep back19. There are more than fifty proposals _b____ at the meeting.A. discussedB. to be discussedC. discussingD. having discussed20. He returned a week later and found his house _d______.A. had broken intoB. was broken intoC. to be broken intoD. had been broken into21. In the past, only in a post office could people _c____letters to theirfriends.A. giveB. mailC. bringD. take22. _a____you are unable to answer, perhaps we should ask someoneelse.A．Since B. So C. While D. Although23. I’m going to spend the winter vacation in Paris, ___a__ I have somerelatives.A. whereB. becauseC. soD. that24. His salary as a driver is much higher __b____.A. than a teacherB. than that of a teacherC. more than a teacherD. than those of a teacher25. He ___c__ l ive in the country than in the city.A. wouldB. likes toC. would ratherD. had better26. They held a grand party to ___c___ the huge success of theirresearch.A. greetB. celebrateC. congratulateD. appreciate27. We could do nothing but __a___ the order.A. obeyB. obeyingC. to obeyD. obeyed28. In 1950, it was the largest ship that _d____.A. was ever builtB. has ever builtC. has ever been builtD. had ever been built29. ___d__you should give your mum a call on Thanksgiving Day,A. May beB. MayC. Might beD. Maybe30. China firmly opposes nuclear arms race, __b____ has won favorablecomments from world opinions.A. thatB. whichC. itD. whoII . Fill in the blanks with the correct form of the words1.The village _______is surrounded__ by trees.2.With the current market situation, the manager is quite 6____thatthis year’s sales will be excellent.3.If my mother goes out, my father will ______5______ the baby.4.You should _____10_______ your pride and apologize to him.5.The little girl ran very fast, with her hair ___3______ in the wind.6.Jane showed great ____4____ throughout her illness.7.There’s a lot of interesting ___1_______ in this book.8.It was difficult to see everything during our ____9____ visit toLondon.9.Mr. Smith made a concluding speech _____7_______ the meeting.10.It is more ___2____ to rent a house, rather than buy it.III. CloseMost children with healthy appetites are ready to eat almost anyting 1 is offered them and a child rarely dislikes food unless it is badly 2 . The way a meal is cooked and served is 3important and attractively-served meal will often improve a child’s appetite. Never ask a child 4 he likes or dislikes a food and never5 likes and dislikes in front of him or allow anybody else to do so. If the father says he hates fat meat or the mother says she dislikes vegetables, the child is likely6 . Do not talk too much to the child7 meal times, and do not allow him 8 the table immediately after a meal or he will soon learn to swallow his food 9he can hurry back to his toys. Always remember 10 you mustn’t force a child to eat.( b) 1. A. what B. that C. who D. whom( c ) 2. A. cook B. cooking C. cooked D. to be cooked ( a ) 3. A. most B. more C. the more D. most of all ( a ) 4. A. whether B. what C. that D. which( a ) 5. A. say B. tell C. discuss D. speak( b ) 6. A. to influence B. to be influenced C. influence D. influenced ( d) 7. A.on B. over C. by D. during( c ) 8. A. leave B. leaving C. to leave D. to leaving ( b ) 9. A. until B. so C. that D. which ( d )10.A. what B. whatever C. which D. thatIV. Reading comprehension.Passage 1One silly question I simply cannot tolerate is “How do you feel?” Usually the question is asked of a man in action ----- a man walking along the street, or busily working at his desk. So what do you expect him to say? He’ll probably say, “Fine, I’m all right.” But you have put a bug in his face, or in his walk, that he overlooked that morning. It makes him worrying a little. He looks in a mirror to see if everything is all right, while you go merrily on your way asking someone else, “How do you feel?”Every question has its time and place. It’s perfectly acceptable, for instance, to ask “How do you feel?” if you are visiting a close friend in the hospital. But if the fellow is walking on both legs, hurrying to take a train or sitting at his desk working, it’s no time to ask him that silly question.When George Bernard Shaw, the famous British writer of plays was in his eighties, someone asked him, “How do you feel?”Shaw put him in his place.“When you reach my age,” he said, “either you feel all right or you are dead.”1.According to the writer, greetings, such as “How do you feel?”______d______.A.show one’s consideration for othersB.are a good way to make friendsC.are proper to ask a man in actionD.generally make one feel uneasy2. The question “How do you feel?” seems to be correct and suitable when asked of ______a___A. a friend who is illB. a person who has lost a close friendC. a stranger who looks somewhat worriedD. a man who is working at his desk3. George Bernard Shaw’s reply in this passage shows his __b______.A. sillinessB. clevernessC. carelessnessD. politeness4. “You have put a bug in his ear ” means that you have ____d_____.A. made him laughB. shown concern for himC. made fun of himD. given him some kind of warning5. This passage can be entitled __a_______A. Silly QuestionB. Don’t Trouble a Busy ManC. What Are Good GreetingsD. George Bernard Shaw’s Reply Passage 2My husband, an economical man, has a favorite saying: “A bargain is really a bargain when you don’t buy it.” Yet he puts aside his economical ways when we dine out. He always gives a generous tip to our waitress. If the service is terrible, he keeps back only a few pennies.We recently treated our son and his girlfriend to a seafood feast near Cocoa Beach, Florida. Our waitress, a grandmotherly woman, was skilled in the art of waiting tables. She treated her customers as individuals. She remembered their special tastes, likes, and dislikes. She learnt all of these after only the briefest of conversations.At the end of the meal, this waitress brought the bill , then went to attend to the growing crowd of other diners. My husband paid with a credit card, added her tip, and we were off. After a quick stop in the wash-room, I reentered the lobby in time to see the waitress running out of the dining room waving a receipt at us. “Mr. Goldsmith!” she called. My husband turned. She waved the paper at him. “Thanks for your tip. It was generous of you.”My husband thought the waitress should be paid a little more than what heusually gave.“Wow, Dad,” our son said, sounding like a surprised 10-year-old. “I’ve never seen a waitress follow anyone out of the restaurant to say thank you for the tip.”6. What is a good bargain, according to Mr. Goldsmith?bA. Dining outB. Not buying anythingC. Not dining outD. Giving small tips7. Which one is TRUE about the waitress?dA. She is a grandmother.B. She cooks foods for her guests.C. She has good tastes.D. She has good memory.8. Why did the waitress run out of the dining room?aA. To say thank you to Mr. Goldsmith.B. To ask Mr. Goldsmith for a tip.C. To show the receipt to Mr. Goldsmith.D. To bring the bill to Mr. Goldsmith.9.Why was the authour’s son surprised?b10.A. Because he was only 10 years old.B. Because he had never seen anything like this.C. Because his father gave such a big tip to the waitress.D. Because his father made a mistake.10.Why did the family go to the restaurant?dA. Because the service in the restaurant was excellent.B. Because the family loved seafood.C. Because it was the son’s birthday.D. Because the couple wanted to give big dinner for their son and his girlfriend. V. TranslationSection A Choose the best answer.1. The reason why we were late is that we missed our train.dA.我们之可以迟到是因为太想念我们乘坐过的火车.B.我们很想乘坐火车但是我们迟到了.C.我们为什么能迟到是我们想赶火车.D. 我们迟到的原因是我们没赶上火车.2. You have got used to the life here.bA.你过去曾在这里居住过.B.你已经习惯这里的生活.C.你已经尝试过这里的生活方式.D.你在适应这里的生活方式.3. I prefer writing a term paper to taking an examination.cA.我不愿意写学期论文, 也不愿意参加考试.B.我宁可参加考试, 而不愿意写一篇学期论文.C.我宁可写一篇学期论文, 而不愿意参加考试.我宁可写学期论文, 也不愿意进行检查.4. He doesn’t go to bed every night until he finishes reviewing his lessons.dA 他每天晚上睡完觉后才去复习功课.B. 他每天晚上直到复习完功课也不去睡觉.C. 他每天晚上睡不着觉才复习功课.D. 他每天晚上复习完功课才去睡觉.5. Nothing could prevent them from making their own way.dA.没有任何事情能阻止他们修路.B.没有任何东西能阻止他们走自己的路.C.没有任何东西能防止他们使别人让路.D.没有任何东西能影响他们有自己的思维方式.Section B Complete the following sentences.6.When we started to do the job, ________we realized that it’s just a piece of cake __________(才意识到它原来是小事一桩).7.It _is kind of you _______________ (你真好) to share your dictionary with us.8.The harder you work, __the more you get __________________ (你得到的就越多).9.He decided to write, _________rather than phone__________ （而不是打电话）.10.________________________it’s time to rest _________ (该休息了). (it’s time to)。

仁爱英语八年级Unit2复习提纲(八上)

15-16学年上学期八年级英语期末复习——课本基础知识回顾Unit 2 Topic 1一、重点词组:1.have a (bad/terrible) cold 患（重）感冒2.have a toothache/backache/headache/stomachache 牙痛/背痛/头痛/胃痛3.see a dentist/doctor 看牙医/医生4.have a cough/fever 患咳嗽/发高烧5.have the flu 得了流感6.have sore eyes 眼睛发炎7.have a sore throat 喉咙发炎8.take/have a (good) rest （好好）休息9.sleep well 睡得好10.drink a lot of boiled water 多喝开水11.lift heavy things 提重物12.stay in bed 呆在床上13.have a good sleep 好好睡一觉14.feel terrible 感到难受15.take sb. to… 带某人去……16.take some medicine/ pills 吃药17.day and night 日日夜夜18.bad luck 倒霉19.lie down 躺下20.hot tea with honey 加蜜的热茶21.brush one’s teeth 刷牙22.have an accident 出了事故/意外23.send sb. to…. 送某人去……24.take/ have a look at… 看一看……25.not…until… 直到……才…..26.get well 恢复健康27.plenty of… 充足;大量28.take off your coat 脱掉你的大衣29. worry about 担心，烦恼30. take care of/look after 关心，照顾31. fly a kite 放风筝32. fall down 摔倒33. not too bad 不算太糟34. call a taxi 叫出租车二、重点句型1.You should see a dentist. 你应该看牙医。

2024二年级北师大语文上学期期末复习〔有答案〕

2024二年级北师大语文上学期期末复习〔有答案〕班级：_____________ 姓名：_____________拼音词组1. 看拼音，写词语。

liǎnɡɡènǎɡèkuān chǎnɡtóu dǐnɡyǎn zhūdùzi shùpíxiǎo hái tiào yuǎn dài zǒu2. 我会看拼音，写词语，还能把字写漂亮。

bànɡwǎn xièxie zhǎn kāi jiānɡlái yězhūqún shān lín jūqíɡuài dài lǐnɡbiǎn dan3. 看拼音，写词语。

bèi kéqián bìyǒu ɡuān cái fù（________）（________）（________）（________）jīdàn chǎo fàn qiézi shāo kǎo（________）（________）（________）（________）4. 读拼音，写词语。

jīnɡlínɡāyíyóu xìzhōu wéi bǔchōnɡ（_________）（_________）（_________）（_________）（_________）pìɡǔshǐjìn sēn lín mǔqīn zuòmènɡ（_________）（_________）（_________）（_________）（_________）5. 看拼音，写词语。

rèn wéi qún shān qíguài shuǐguǒlǎo xiāng nán wàng xiàn zài zhàn shì笔画训练6. 下列说法中，完全正确的一项是（）A．“养”“演”“葱”“营”的韵母都是后鼻音韵母。

15-16-2《经济学原理》期末复习2

第1章一、选择题1．经济学研究的是 BA．企业如何赚钱的问题B．如何实现稀缺资源的有效配置和利用问题C．用数学方法建立理论模型 D.政府如何管治的问题2．《国富论》中亚当·斯密提出公共利益可以通过以下何种方式被最好地促进： CA. 政府对经济的管制B．好心市民的善行C．个人对自我利益的追求D．对历史悠久的传统的坚持3．区分宏观经济学和微观经济学的关键在于 AA．微观经济学研究个体经济行为，宏观经济学研究总体经济现象B. 微观经济学研究厂商行为，宏观经济学研究政府行为C．微观经济学研究产品市场，宏观经济学研究失业问题D．微观经济学研究研究范围狭小，宏观经济学研究涉猎广泛4．经济学家讨论“人们的收入差距大一点好还是小一点好”这一问题属于（ b ）所要研究的问题A.实证经济学B.规范经济学C.宏观经济学D.微观经济学5．“世界上没有免费的午餐”的说法的前提是 AA.任何事物都有机会成本B.认识自私的C.政府不总是补贴食品生产D.不应出现食品银行6．现有资源不能充分满足人们的欲望这一事实被称作（ B ）A．经济物品 B.资源的稀缺性 C.机会成本 D.人类欲望的无限性7、在过去我国实行计划经济的时候，人们购买许多物品都要排队。

对于这一现象，正确的分析是：CA．这是因为供给太少或者需求太大导致的B．排队是资源配置的有效率方式，因为对物品评价高的人自然会早去排队C．如果允许市场力量自由发挥作用，就几乎可以消除排队现象D．市场力量可以消除排队现象，但是对相反的物品积压现象则是无能为力二、判断题1、资源短缺，指的是相对于人类社会无限需要而言的资源的有限性。

（Y）2、因为存在资源浪费，所以资源并不稀缺。

（ X ）3、在不同的社会制度下，人们对资源配置和利用的方式不同。

（ Y ）4、是否利用价值判断是实证经济学与规范经济学的根本区别（Y ）5、社会实现的产品数量组合低于生产可能性边界，说明存在着资源闲置或浪费现象。

人教版一年级数学上册期末复习资料汇总

人教版一年级数学上册期末复习资料一、读数、写数。

1、读20以内的数。

顺数：从小到大的顺序0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20倒数：从大到小的顺序20 19 18 17 ······单数：1、3、5、7、9 ······双数：2、4、6、8、10 ······2、两位数（1）我们生活中经常遇到十个物体为一个整体的情况，实际上十个“1”就是一个“10”，一个“10”就是十个“1”。

如：A：11里有（1）个十和（1）个一；11里有（11）个一。

12里有（1）个十和（2）个一；12里有（12）个一13里有（1）个十和（3）个一；13里有（13）个一14里有（1）个十和（4）个一；14里有（14）个一15里有（1）个十和（5）个一；15里有（15）个一······19里有（1）个十和（9）个一；或者说，19里有（19）个一20里有（2）个十；20里有（20）个一B：看数字卡片（11~20），说出卡片上的数是由几个十和几个一组成的。

（2）在计数器上，从右边起第一位是什么位？（个位）第2位是什么位？（十位）个位上的1颗珠子表示什么？（表示1个一）十位上的1颗珠子表示什么？（表示1个十）（3）先读11、12、13、14、15、16、17、18、19、20，再写出来。

如：14，读作：十四，写作：14。

个位上是4，表示4个一，十位上数字是1，表示1个十。

二、比较大小和第几。

1、例如给数字娃娃排队：5、6、10、3、20、17，可以按从大到小的顺序排列，也可以按从小到大的顺序排列。

（注意做题时，写一个数字，划去一个，做到不重不漏。

期末复习计划英语初一(汇编15篇)

期末复习计划英语初一（汇编15篇）期末复习计划英语初一第1篇九年级英语总复习课由于时间受到严格控制，要在短短的三个多月时间里完成初中三个学年所学到的全部知识，并非轻而易举的事。

再者，市教育局对于各校中考评比是以三率（优秀率、优良率、及格率）及其综合比为依据，所以复习要有针对性和时效性，所拟订的总复习的过程应体现分层次教学，以提高三率综合比。

复习过程传统地分为以下三个阶段。

（即：第一阶段是教材梳理，第二阶段是专项复习，第三阶段是模拟训练和综合训练：以普教室的《中考新探索》为主要训练材料。

）我们复习重点放在第一阶段，以课本为主，结合《优化能力》，以每个单元为单位进行全面复习。

经分析：我校生源素质较差，上学期末英语科优秀率为18%，优良率为31%，及格率为44% 。

其中，40-59分段学生约25%， 40-69分段学生约占40%，这是提高三率综合比的重要力量。

因而，必须抓中间促两头，要立足课本，狠抓基础，绝大多数中等生都存在这样的问题：对语言知识一知半解；词汇、句型记不牢靠；练习题一次性使用，极少巩固。

1. 要求学生做好笔记，把每天所复习的的单词、语言点理解记忆。

第二天进行听写，并及时批改。

进步的及时表扬，差生分别鼓励，及时跟进。

2、精选一份仁爱版的同步专用试卷，每复习完两个单元进行一次测试，每月安排一次月考，并及时批改和讲评。

讲评完以后要求同学再复习一遍，第二天对学生易错点再小测一次。

3、要求学生准备错题集，要求学生整理作业和考试中的错题，反复巩固。

我们不一定搞题海战术，但做过的类型题必须掌握。

这些做法能有效促进和提高这40%的学生成绩，提高三率综合比。

但对于31%优良以上的学生来讲，其失分主要在听力、阅读和写作上，因此我们还要强化训练听力、阅读、写作。

1、听力训练利用早读，每周一、三7：20至7：40由学校广播室统一播放中考听力模拟训练，教师到位督促并及时讲评。

这样持之以恒，坚持三个月，相信会有好效果。

2022秋九年级数学上册期末复习专题练2一元二次方程习题课件新版冀教版

原方程可化为x(x－3)＝－(x－3)．(第一步) 方程两边同时除以x－3，得x＝－1.(第二步) (1)小明的解答过程是从第__二____步开始出错的，其错误原因
是_若__x_－__3_＝__0_，__则__方__程__两__边__不__能__同__时__除__以__x_－__3__；
(2)请写出此题正确的解答过程．解：∵x(x－3)＝3－x， ∴x(x－3)＝－(x－3)，则x(x－3)＋(x－3)＝0， ∴(x－3)(x＋1)＝0，则x－3＝0或x＋1＝0，解得x1＝3，x2＝－1.
5．用配方法解方程2x2－x－1＝0，变形结果正确的是
( D) A.x－122＝34 C.x－142＝1176
B.x－142＝34 D.x－142＝196
6.【2020·河北石家庄模拟】某件品牌上衣经过两次降价，每件零售价由1 000元降为810元．已知两次降价的百分率都为x，那么x满足的方程是( D )
A．1 000(1＋x)2＝810 B．1 000x2＝810 C．1 000(1－x%)2＝810 D．1 000(1－x)2＝810
7．若关于x的一元二次方程kx2－6x＋9＝0没有实数根，
则k的取值范围是( D )
A．k＜1且k≠0
B．k≠0
C．k＜1 D．k＞1
8．【2019·广东】已知x1，x2是一元二次方程x2－2x＝0的两
解为( )
A．6
B．5 3－32
C．5 3－2
D．5 3－5
【点拨】由题意知先构造一个面积为 x2 的正方形，再以正方形的边长为一边向外构造四源自面积为52x 的矩形，得到大正方形的
面积为 50＋522×4＝50＋25＝75， ∴该方程的正数解为 75－52×2＝5

电气安全期末复习

电气安全期末复习填空（15分）、单选（15分）、名词解释（5个15分）、简答（6个30分）、论述（10分）、计算（15分）（第七章会有计算）第一章：电气安全概述1、电气事故：电力系统由于负荷、潮流的变化、电气设备质量、寿命的影响或自然灾害、操作失误导致各种故障，致使电力系统运行局部甚至全部遭到破坏，产生严重后果。

2、电气伤害的种类：触电伤害和电磁场伤害；触电伤害又分为电击和电伤；电击又分为单相触电、两相触电、接触电压、跨步电压及闪击3、摆脱电流：人触电后能自行摆脱电源的电流极限值称为摆脱电流。

成年男性最小摆脱电流为9mA,平均摆脱电流为16 mA；成年女性最小摆脱电流为6mA，平均摆脱电流为10.5mA。

设计电力系统时，应使人不致长时间承受大于9mA交流或60mA直流电的作用4、（1）伤害程度与时间的关系：作用时间越长，摆脱电流值迅速降低，摆脱电压值也迅速降低，对人的伤害越大（2）伤害程度与电流种类的关系：直流、不同频率的交流及冲击电流对人体的伤害程度不同。

直流电的危险性比交流电小。

电流频率为25—300Hz的交流电对人体的伤害最为严重。

（3）伤害程度与电流途径的关系：电流从一只手流入，从一只手流出，或从手入从脚出，都能发生致命影响；从脚入从脚出，危险小。

电流从左手到右脚的路径是最危险的。

5、我国安全电流为30mA。

我国安全电压额定值的等级为42V,36V,24V,12V,6V。

（1）有触电危险的场所，手持电动工具安全电压42V(2)无特殊防护的局部照明灯：36V或24V（3）金属容器内、隧道内、矿井中等因工作地点狭窄、行动不便以及周围有大面积接地体的环境中，使用照明灯时应根据危险程度采用24V或12V电压（4）当电气设备采用超过24V的安全电压时，必须采取直接接触带电体的保护措施。

第二章：供配电系统1、电力系统：由发电厂、电力网、变电所及电力用户组成的统一整体2、电压等级：我国习惯上将电压为800kV或1000kV以上的称为特高压，330kV —800kV称为超高压，1kV—330kV的称为高压，1kV以下的称为低压。

2024年北师大版八年级上册数学期末复习题组练二实数

2
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C. 3
8
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D. 4
15
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9. 点 P 在数轴上运动，它对应的实数为 a ，点 A 对应的实数
为3，则代数式 ( − ) ＋ a ＋3的值为(
A. 6
B. 2 a
C. 6或2 a
D. a ＋3
1
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二、填空题(每小题4分，共24分)
11. 若式子 −( − ) 有意义，则满足条件的 a 的值
是
1
.
4
2
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Hale Waihona Puke 161718
19
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12. 【新视角结论开放题】写出一个绝对值小于的负整
数：
1
2
－1(答案不唯一)
3
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5
6
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9
.
⁠
10

− ＝2；④ 的平方
根是±4；⑤±9是81的算术平方根，其中正确的有( A
A. 1个
B. 2个
C. 3个
D. 4个
1
2
3
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5
6

学期大学英语期末复习

sophomore。

junior。

senior）12) To reduce weight, I am nowplays like a professional（职业高尔夫运动员）.2. Use the verb in brackets to form an appropriatephrasal verb you have learnedand complete the sentence with it:Modal:Was he planning to the interview with another letter indicating his eagerness to join us? (follow)Was he planning to follow the interview with another letter indicating his eagerness to join us?（不管）what others may say. (go)（展望）the future. (look)3) Most of the old buildings were pulled down（被拆毁）blocks（方块，这里指“街区”）of new apartments（公寓）motivation（激励）or prospect（期望）that means something to their offspring.（build）6) To my mind, it is very important your letter and résumé(个人简历)with a phone call when you apply for any job. (follow)7) Before we set off trip, our five-year-old asked, “Can themicrowave野营地), Dad?”8) She tried to swallow, but couldn’t, her tUnit FourVocabularyⅠ. 1. Fill in the gaps with words or phrases chosen from the box. Change the form where necessary.1) The general（将军，上将）ordered his troops to move quickly towards an advantageous position.2) People would think the seven-year-old couldn’t even reach the pedals (踏板，脚蹬子), let alone drive the car. Nevertheless（然而）, he made it!3) In a sense（在某种意义上）, we are witnessing the vanishingof national boarders in many areas of economic activity in the world today.4) The tower built at the turn of the century became a landmark of the city.5)In a book entitled A Short History of Nearly Everything, Bill Bryson tries to ignite （激起）a passion for knowledge in young readers.6) It seems neuroscience（神经系统科学）is threatening to displace physics as the queen of the science.7) It is only natural for the people to challenge the Establishment, especially when the economic outlook is gloomy（前景黯淡的；悲观的）.8) If anything（如果有什么区别的话）, this movie appeals to（呼吁；对…有吸引力）thepatriotic feelings of the people and helps to strengthen national unity（国家统一）.9) Julius Caesar in this play is a man full of contradictions, at times strong and confident, but at other times old and frail（脆弱）.10) The newly launched website aspires to create a virtual community（虚拟社区）ofcommon interest via exchange of views on the future of the Internet.11) What Ann advocates（提倡）//shows how divorced from reality she has become.12) After investigating the behavior of pendulums, Galileo was able to use them astime measurement devices in many of his experiments.2. Use the verb in brackets to form an appropriatephrasal verb you have learnedand replace with it the italicized part in each of the following sentences:Modal:My daughter is very keen and totally absorbed in the Internet and I think that it is mad, bad and dangerous. (hook)My daughter is hooked on the Internet and I think that it is mad, bad and dangerous.1) I’ve thoughtthat it must have been an accident. (come)(doze)（航空工业）,（激进的）views on gender equality（性别平等）. (set)6) The black hole is a region of space with a gravitational field so powerful that it7) The Green Party（绿色和平组织）said plans to clean up the environment were doomed（注定要失败的）unless the government gave an immediatecash injection （资金投入）to the departments responsible for enforcement（执行）. (clean)8) For sheer lack of space and resources the local drug addition center (戒毒中心)has to turn away（= refuse）drug-addicts (吸毒者) who are begging for admission.Unit 5V ocabularyⅠ. 1. Fill in the gaps with words or phrases chosen from the box. Change the form where necessary.save time.in discovering reliable and useful laws of natureis that all nature is（销售部经理）at our Paris office. If you’re interested in it, please send us an application letter and your résumé at once.job.5) Plastics（塑料）light as wood.6) Coat the shoes with polish（抛光剂）shine.joke to them, but it wasn’t funn y to me at all.,which（take…for granted:把…看作理所当然的）9) The waitress did bring us clean plates eventually (=finallyarms and legs to stay afloat（漂浮的）, which, however, disappear within a few months after birth.randfather’s gold watch in secret.birds and animals have the ability to travel long distance.2. Use the verb in brackets to form an appropriatephrasal verb you have learnedand complete the sentence with it:Modal:I suppose you never him in London. (come)I suppose you never came across him in London.2) Unless something urgent demands her attention, Amandaisn’t smart. (stick)=pleasant)memories. (bring)looking for a job. (go)but I just didn’t understand what he6) Granny folded up (把…折叠起来) the towels（毛巾）and them thecupboard（柜橱）. (put)mind. (turn)(take)15选10 (Cloze)employer when you go for andemonstrate（=show）all about the firm (公司), for example, to show that youof products (= produce，生产)and the chief it isin a spontaneous (= natural，自然的) manner and let the that you are not frightened by new toofthe opportunity of the employment. What sort of qualities（品质）is he likely to be looking for? Enthusiasm, certainly. So don’just Apply（表达）your enthusiasm to join the company.Davos is a small Alpine city in eastern Switzerland which began making itself known in the 1990s for hosing the World Economic Forum, an annual gathering of politicians, financiers and academics (1). Each year, those taking part spend five days there networking (2) and discussinga variety of(3) issues such as the global supply of oil, world economic growth(4) and environmental problems.Davos Men share the belief that globalization is both welcome and unstoppable. They would like to see national boundaries vanish(5) so as to facilitate(6)their global operations. Some people say that this international perspective is a minority elitist position not shared by the majority of people. Others, however, argue that endorsing(7) a global outlook(8) does not mean sweeping aside(9) one’s patriotic(10)feelings or erasing(11) one’s national identity. The question, perhaps, is whether it is possible to strike a balance(12) between being global and being local.You see thatcommitted ：致力于）is, I wouldn’t attempt it. I dare say few swimmers are’tmyself, but I wouldn’t attempt ’t lookonce, but he had. However, it seems like he had no choice. Heif he did the swim. That was another surprise.（守规矩的）man, kind to everybody. Perhaps he thought the young man would not have the courage, that he would funk it. Then,appearances can be.背诵段（Unit 3）When I graduated from college, the odds were good that I would have the same job for the rest of my life. And that's how it worked out. But getting hired is no longer a once-in-a-lifetime experience. Employment experts believe that today's graduates could face as many as ten job changes during their careers.我大学毕业时，我极有可能终身从事同一个工作。

大学英语4-4期末复习

15-16-2大学英语4-4期末复习V ocabularyⅠ. 1. Fill in the gaps with words or phrases chosen from the box. Change the form where necessary.that Jane didn’t tip（给小费）her.---intellectually（智力方面地）, emotionally（情感方面地）, and.of the building hasn’t suffered（受损害）, the surface (表面4) She received an increase in pay and it has in her attitude towards work.（她工资增加了，这使她对工作的态度发生了大的变化）very nervous one evening. I asked her what was wrong, and sheso amusing（有趣的）and funnythatso you’ll know to what extent you are making progress.预期的，可能的）buyer to make themselves more persuasive（南极）.（眼中闪烁着热情洋溢的光芒）as she（产生效果）in her College English class.11) In my senior year（大四）success.（freshman; sophomore; junior; senior）12) To reduce weight, I am now learning to play golf withwho plays like a professional（职业高尔夫运动员）.2. Use the verb in brackets to form an appropriate phrasal verb you have learned andcomplete the sentence with it:Modal:Was he planning to the interview with another letter indicating his eagerness to join us? (follow)Was he planning to follow the interview with another letter indicating his eagerness to join us?（不管）what others may say. (go)（展望）the future. (look)3) Most of the old buildings were pulled down（被拆毁） blocks（方块，这里指“街区”）of new apartments（公寓）motivation（激励）or prospect（期望）that means something to their offspring.（build）6) To my mind, it is very important to sumé (个人简历)7) Before we set off trip, our five-year-old asked, “Can themicrowave野营地), Dad?”Unit FourVocabularyⅠ. 1. Fill in the gaps with words or phrases chosen from the box. Change the form where necessary.1) The general（将军，上将）ordered his troops to move quickly towards an advantageous position.2) People would think the seven-year-old c ouldn’t even reach the pedals (踏板，脚蹬子), let alone drive the car. Nevertheless（然而）, he made it!3) In a sense（在某种意义上）, we are witnessing the vanishing of national boarders in many areas of economic activity in the world today.4) The tower built at the turn of the century became a landmark of the city.5)In a book entitled A Short History of Nearly Everything, Bill Bryson tries to ignite （激起）a passion for knowledge in young readers.6) It seems neuroscience（神经系统科学）is threatening to displace physics as the queen of the science.7) It is only natural for the people to challenge the Establishment, especially when the economic outlook is gloomy（前景黯淡的；悲观的）.8) If anything（如果有什么区别的话）, this movie appeals to（呼吁；对…有吸引力）the patriotic feelings of the people and helps to strengthen national unity（国家统一）.9) Julius Caesar in this play is a man full of contradictions, at times strong and confident, but at other times old and frail（脆弱）.10) The newly launched website aspires to create a virtual community（虚拟社区）ofcommon interest via exchange of views on the future of the Internet.11) What Ann advocates（提倡）//shows how divorced from reality she has become.12) After investigating the behavior of pendulums, Galileo was able to use them astime measurement devices in many of his experiments.2. Use the verb in brackets to form an appropriate phrasal verb you have learned and replace with it the italicized part in each of the following sentences:Modal:My daughter is very keen and totally absorbed in the Internet and I think that it is mad, bad and dangerous. (hook)My daughter is hooked on the Internet and I think that it is mad, bad and dangerous.that it must have been an accident. (come)(doze)（航空工业）,（激进的）views on gender equalitya region of space with a gravitational field so powerful that it7) The Green Party（绿色和平组织）said plans to clean up the environment were doomed（注定要失败的）unless the government gave an immediate cash injection （资金投入）to the departments responsible for enforcement（执行）. (clean)8) For sheer lack of space and resources the local drug addition center (戒毒中心) has to turn away（= refuse）drug-addicts (吸毒者) who are begging for admission.Unit 5V ocabularyⅠ. 1. Fill in the gaps with words or phrases chosen from the box. Change the form where necessary.in discovering reliable and useful laws of natureis that all nature is（销售部经理）at our Paris office. Ifsumé at once.5) Plastics（塑料）light as wood.6) Coat the shoes with polish（抛光剂）shine.joke to them, but it wasn’t funny to me at all., which（take…for granted:把…看作理所当然的）9) The waitress did bring us clean plates eventually (=finallyarms and legs to stay afloat（漂浮的）, which, however, disappear within a few months after birth.her grandfather’s gold watch in secret.birds and animals have the ability to travel long distance.2. Use the verb in brackets to form an appropriate phrasal verb you have learned and complete the sentence with it:Modal:I suppose you never him in London. (come)I suppose you never came across him in London.demands her attention, Amandabreaks every two hours. Sheisn’t smart. (stick)=pleasant) memories. (bring)looking for a job. (go)6) Granny folded up (把…折叠起来) the towels（毛巾）cupboard（柜橱）. (put)mind. (turn)(take)15选(1) employer when you go for andemonstrate（=show）all about the firm (公司)(4), for example, to show that youproduce)(7) it is(8) in a spontaneous (= natural，自然的)are not frightened by new to(9)(10) ofthe opportunity of the employment. What sort of qualities（品质）just Apply that(12)Davos is a small Alpine city in eastern Switzerland which began making itself known in the 1990s for hosing the World Economic Forum, an annual gathering of politicians, financiers and academics (1). Each year, those taking part spend five days there networking (2) and discussing a variety of (3) issues such as the global supply of oil, world economic growth (4) and environmental problems.Davos Men share the belief that globalization is both welcome and unstoppable. They would like to see national boundaries vanish (5)so as to facilitate (6)their global operations. Some people say that this international perspective is a minority elitist position not shared by the majority of people. Others, however, argue that endorsing (7) a global outlook (8) does not mean sweeping aside (9) one’s patriotic (10) feelings or erasing (11) one’s national identity. The question, perhaps, is whether it is possible to strike a balance (12) between being global and being local.You see thatcommitted ：致力于）(2) is(3), I wouldn’(4)’tmyself, but I wouldn’t attempt it. ’t look(7) once, but he(8). However, it seems like he had no choice., not a penny left, and that old Burton would Burton seems （守规矩的）man, kind to everybody. Then, again, perhaps Burton knew he was sending the his death, but(12) appearances can be.背诵段（Unit 3）When I graduated from college, the odds were good that I would have the same job for the rest of my life. And that's how it worked out. But getting hired is no longer a once-in-a-lifetime experience. Employment experts believe that today's graduates could face as many as ten job changes during their careers.我大学毕业时，我极有可能终身从事同一个工作。

高二物理期末复习简谐运动知识点

15-16高二物理期末复习简谐运动知识点简谐运动是最基本也最简单的机械振动。

以下是简谐运动知识点，请大家认真学习。

(1)简谐运动：物体在跟位移大小成正比，且总是指向平衡位置的力作用下的振动。

受力特征：kxF 对简谐运动的理解：① 简谐振动是最简单最基本的振动②简谐运动的位移按正弦规律变化，所以它不是匀变速运动，而是变力作用下的非匀变速运动。

③简谐运动具有重复性的运动轨迹，若轨迹不重复，则一定不是简谐运动。

(2)描述简谐运动的物理量平衡位置：做往复运动的物体能够静止的位置，叫作平衡位置。

振动：物体(或其一部分)在平衡位置附近所做的往复运动，对振动的三点透析：振动的轨迹：振动物体可能作直线运动，也可能做曲线运动，所以其轨迹可能是直线或曲线。

振动的特征：往复性。

振动的条件：每当物体离开平衡位置后，它就受到一个指向平衡位置的力，该力使物体产生回到平衡位置的效果(即回复力)、并将其看作受到的阻力足够小。

此时认为它做自由振动。

振幅A：定义：振动物体离开平衡位置的最大距离，叫作振动的振幅(或省略作振幅) 单位：m(米)物理意义：反映振动的强弱和振动的空间范围，对同一系统，振幅越大，系统的能量越大。

振幅和位移的区别1. 振幅是振动物体离开平衡位置的最大距离，位移是振动物体相对平衡位置的位置变化2. 振幅时表示振动强弱的物理量，位移表示的是某一时刻振动质点的位置。

3. 振幅是标量，位移是矢量周期T：定义：做简谐运动的物体完成一次全振动所需要的时间。

单位：s物理意义：表示振动的快慢，周期越长表示物体振动的越慢，周期越短表示物体振动得越快。

人教版数学三年级下册-03总复习-期末试卷07

2015-2016学年新人教版三年级（下）期末数学试卷（102）一、填空．（共20分，每题2分）1．（2分）1米6厘米=米；8角=元．2．（2分）9平方分米=平方厘米500平方分米=平方米．3．（2分）方桌的桌面面积约64；一本数学书厚约8．4．（2分）用24时计时法表示下列时刻．上午8时晚上8时25分．5．（2分）用普通计时法表示下列时刻．22：0015时45分．6．（2分）20个月=年个月闰年2月有天．7．（2分）课外小组15：20分开始活动，经过1小时10分后结束，结束时是时分．8．（2分）一个正方形的花池．周长是64米，它的面积是平方米．9．（2分）小明在小芳的东北方向，那么小芳在小明的方向．10．（2分）4个同学要进行一场乒乓球比赛，每2个人打一场球．一共要打场．二、选择（把正确答案的序号填在括号里）．（共5分，每题1分）11．（1分）在下面的公历年份中，是闰年的有（）A．1800年B．1982年C．2004年12．（1分）□24÷6，要使商是两位数，□里最大填（）A．5 B．6 C．713．（1分）3厘米写成小数是（）A．0.3米B．0.33米C．0.03米14．（1分）用一根长20米的铁丝围成一个最大的正方形，这个正方形的面积是（）A．25米B．20平方米C．25平方米15．（1分）七、八、九月共有（）天．A．91 B．92 C．93三、判断．（5分，每题1分）16．（1分）面积相等的两个长方形，它们的周长一定也相等．．（判断对错）17．（1分）最小的三位数除以最大的一位数，商是两位数．．（判断对错）18．（1分）小红家在学校的北面，学校在小红家的南面．．（判断对错）19．（1分）边长为4米的正方形面积为16米2．．（判断对错）20．（1分）李芳是1994年2月29日出生的．．（判断对错）四、计算（24分）21．（6分）直接写得数620﹣60=5×6×6=84÷4=320÷8=27×30=36×2+18=81÷9=0×33=1.4﹣0.8= 6.8+0.5= 3.9﹣1.9= 4.3﹣2.7=22．（10分）列竖式计算，带※的要验算87×63=75×36=504÷8=※414÷9=23．（8分）脱式计算308+232﹣456（596﹣389）×881×7÷9672÷（2×3）五、看图填空．（6分）24．（6分）看图填空（1）花园街的西面有、、．（2）图书馆在小林家的面，小川家在小林家的面，超市的西北面是．六、解决问题．（（1）-（5）每题5分，（6）题15分，共40分）25．（5分）一份稿件正好有4页，每页25行，每行28个字．这份稿件一共有多少字？26．（5分）篱笆的长是多少米？这块菜地的面积是多少平方米？27．（5分）端午节，食堂特制了180个棕子，每两个装一袋，每三袋一盒．这些棕子可以装几盒？28．（5分）一个长方形与一个正方形周长相等，如果正方形的边长是18分米，长方形的长是24分米，正方形和长方形的面积各是多少？29．（5分）同学们出的墙报，长18分米、宽12分米．墙报的面积是多少平方分米？在墙报四周贴一条花边，花边的总长是多少分米？30．（15分）仔细观察下面的统计表，先把它填写完整，再回答问题．某校五（1）班语文能力考核合格人数统计表项目基础知识阅读能力写作能力课外积累人数性别合计3839男23198女222116（1）哪一个项目合格的人数最多？（2）这个班至少有多少人？（3）你对他们有什么建议？七、选做题．（10分）31．（10分）火车站有个报时钟，5时整敲响5下，所用时间是8秒．9时整敲响9下，所用时间是几秒？2015-2016学年新人教版三年级（下）期末数学试卷（102）参考答案与试题解析一、填空．（共20分，每题2分）1．（2分）1米6厘米= 1.06米；8角=0.8元．【分析】把1米6厘米化成米数，用6除以进率100，然后再加上1；把8角化成元数，用8除以进率10；即可得解．【解答】解：1米6厘米=1.06米；8角=0.8元；故答案为：1.06，0.8．【点评】此题考查名数的换算，把高级单位的名数换算成低级单位的名数，就乘单位间的进率，把低级单位的名数换算成高级单位的名数，就除以单位间的进率．2．（2分）9平方分米=900平方厘米500平方分米=5平方米．【分析】9平方分米化成以平方厘米为单位的数，用9乘进率100即可；500平方分米化成以平方米为单位的数，用500除以进率100即可．【解答】解：9平方分米=900平方厘米500平方分米=5平方米．故答案为：900，5．【点评】此题考查名数的换算，把高级单位的名数换算成低级单位的名数，就乘单位间的进率，把低级单位的名数换算成高级单位的名数，就除以单位间的进率．3．（2分）（2013春•博兴县校级期末）方桌的桌面面积约64平方分米；一本数学书厚约8毫米．【分析】根据生活经验、对面积单位大小的认识，可知计量方桌桌面的面积，应用“平方分米”做单位；计量一本数学书厚应用“毫米”做单位．【解答】解：方桌的桌面面积约64平方分米；一本数学书厚约8毫米；故答案为：平方分米，毫米．【点评】此题考查根据情景选择合适的计量单位，要注意联系生活实际、计量单位和数据的大小，灵活的选择．4．（2分）用24时计时法表示下列时刻．上午8时8时晚上8时25分20时25分．【分析】用24时计时法表示凌晨或上午时刻，和用普通计时法表示的时刻相同；用24时计时法表示下午或晚上时刻，就要用下午或晚上的时刻加上12小时；据此解答．【解答】解：上午8时：8时晚上8时25分：20时25分．故答案为：8时，20时25分．【点评】此题主要考查普通计时法与24时计时法的转换，用24时计时法表示下午或晚上时刻用普通计时法表示的时刻加上12时．5．（2分）用普通计时法表示下列时刻．22：00晚上10：0015时45分下午3时45分．【分析】把24时计时法转化成普通计时法，上午时间不变，下午时间减去12时．依此解答即可．【解答】解：22：00=晚上10：00；15时45分=下午3时45分．故答案为：晚上10：00；下午3时45分．【点评】此题考查了24时计时法和普通计时法的转化．6．（2分）20个月=1年8个月闰年2月有29天．【分析】把20个月化成复名数，用20除以进率12，商是年数，余数是月数；闰年的二月有29天，平年的二月有28天．【解答】解：20个月=1年8个月闰年2月有29天故答案为：1，8，29．【点评】此题考查名数的换算，把高级单位的名数换算成低级单位的名数，就乘单位间的进率，把低级单位的名数换算成高级单位的名数，就除以单位间的进率．7．（2分）（2014春•陕西校级月考）课外小组15：20分开始活动，经过1小时10分后结束，结束时是16时30分．【分析】根据题干，用开始时间加上经过的时间，即可求出结束时间，据此计算即可解答．【解答】解：15时20分+1小时10分=16时30分答：结束时是16时30分．故答案为：16；30．【点评】解答此题的关键是明确结束时间=开始时间+经过时间．8．（2分）（2016春•英吉沙县期末）一个正方形的花池．周长是64米，它的面积是256平方米．【分析】根据正方形的周长公式C=4a，知道a=C÷4，求出正方形的边长，再根据正方形的面积公式S=a×a，代入数据列式即可求出面积．【解答】解：正方形的边长：64÷4=16（米），正方形的面积：16×16=256（平方米）．答：它的面积是256平方米．故答案为：256．【点评】此题主要考查了正方形的周长与面积公式的灵活应用．9．（2分）小明在小芳的东北方向，那么小芳在小明的西南方向．【分析】依据方向的相对性可知：东北与西南相对，据此解答即可．【解答】解：根据方向的相对性可知：小明在小芳的东北方向，那么小芳在小明的西南方向．故答案为：西南．【点评】此题主要依据方向的相对性解决问题．10．（2分）4个同学要进行一场乒乓球比赛，每2个人打一场球．一共要打6场．【分析】如果每两个同学之间都进行一场比赛，每个同学都要和其他的三人进行一场比赛，每个同学打3场，共有3×4=12场比赛；由于每两个人之间重复计算了一次，实际只需打12÷2=6场即可．【解答】解：（4﹣1）×4÷2=12÷2=6（场）；答：一共要打6场比赛．故答案为：6．【点评】此类赛制为单循环赛制，比赛场数=参赛人数×（人数﹣1）÷2．二、选择（把正确答案的序号填在括号里）．（共5分，每题1分）11．（1分）在下面的公历年份中，是闰年的有（）A．1800年B．1982年C．2004年【分析】判断闰年的办法：是4的倍数的年份就是闰年，不是4的倍数年份就是平年，整百年必须是400的倍数，据此判断各选项中的年份是不是闰年，然后分析选择．【解答】解：1800不是400的倍数，1800年不是闰年；1982不是4的倍数，1982年是平年，不是闰年；2004是4的倍数，2004年是闰年；故选：C．【点评】本题主要考查闰年的判定方法，注意整百年必须是400的倍数才是闰年．12．（1分）□24÷6，要使商是两位数，□里最大填（）A．5 B．6 C．7【分析】三位数除以一位数，先用百位上的数去除以一位数，百位上的数和一位数比较，如果比一位数大或相等就够除，商就是一个三位数；如果百位上的数比一位数小，就要用百位和十位的数组成一个两位数去除以一位数，商要商在十位上，就是一个两位数；由此求解．【解答】解：要使□24÷6的商是两位数，那么□＜6，□里面可以填：1、2、3、4、5，最大是5．故选：A．【点评】本题考查的是除法的计算方法，需要从高位开始除，所以只要从最高位开始判断与除数的大小关系就可以求出商的最高位在哪一位上．13．（1分）3厘米写成小数是（）A．0.3米B．0.33米C．0.03米【分析】根据题意，也就是把3厘米换算成米数，用3除以进率100得0.03米．【解答】解：3厘米=0.03米．故选：C．【点评】解决此题关键是明确“米”和“厘米”的进率是100．14．（1分）（2015春•崇州市校级期末）用一根长20米的铁丝围成一个最大的正方形，这个正方形的面积是（）A．25米B．20平方米C．25平方米【分析】根据题意知道20米是正方形的周长，由此求出正方形的边长，再根据正方形的面积公式S=a2，列式解答即可．【解答】解：正方形的边长是：20÷4=5（米）正方形的面积是：52=5×5=25（平方米）；答：这个正方形的面积是25平方米．故选：C．【点评】此题主要考查了正方形的面积公式（S=a2）的实际应用，另外注意20米是正方形的周长，不是正方形的边长，还有面积单位与长度单位的区分．15．（1分）（2014春•梁子湖区期末）七、八、九月共有（）天．A．91 B．92 C．93【分析】根据年月日的知识，七月和八月是大月有31天，九月是小月有30天，求出它们的和即可．【解答】解：31+31+30=92（天）答：七、八、九月共有92天；故选：B．【点评】本题主要考查年月日的知识，注意七月和八月是大月有31天，九月是小月有30天．三、判断．（5分，每题1分）16．（1分）（2011•株洲自主招生）面积相等的两个长方形，它们的周长一定也相等．错误．（判断对错）【分析】可以利用长方形的面积和周长公式，举反例进行判断．【解答】解：面积为16平方厘米的两个长方形，一个长方形的长和宽可以为8厘米和2厘米，则其周长为（8+2）×2=20（厘米），另一个长方形的长和宽可以为16厘米和1厘米，则其周长为（16+1）×2=34（厘米）；所以说“面积相等的两个长方形，它们的周长一定也相等”的说法是错误的．故答案为：错误．【点评】解答此题的关键是：利用反例，推翻题干的结论即可．17．（1分）（2015春•沧州期末）最小的三位数除以最大的一位数，商是两位数．√．（判断对错）【分析】最小的三位数是100，最大的一位数是9，用100除以9求出商再判断．【解答】解：100÷9=11 (1)商是11，是两位数；原题说法正确．故答案为：√．【点评】解决本题先找出最小的三位数和最大的一位数，求出商，再判断．18．（1分）（2015春•察右后旗校级期末）小红家在学校的北面，学校在小红家的南面．√．（判断对错）【分析】小红家在学校的北面，是以学校为观测点，那么小红家在学校的正北方向，如以小红家为观测点，那么学校在小红家的正南方向上．据此解答．【解答】解：小红家在学校的北面，是以学校为观测点，那么小红家在学校的正北方向，如以小红家为观测点，那么学校在小红家的正南方向上．故答案为：√．【点评】此题是利用方位来确定具体位置，观测点不同，看到的方位也不同．19．（1分）边长为4米的正方形面积为16米2．√．（判断对错）【分析】根据正方形的面积公式求出它的面积再进行判断，据此解答．【解答】解：4×4=16（平方米）答：边长为4米的正方形的面积为16米2．正确．故答案为：√．【点评】本题主要考查了学生对正方形面积公式的掌握情况．20．（1分）（2007•鼓楼区校级自主招生）李芳是1994年2月29日出生的．错误．（判断对错）【分析】要判断李芳是1994年2月29日出生的说法对不对，只要判断一下1994年是闰年还是平年即可，因为根据年月日的知识，闰年的二月有29天，平年的二月有28天，据此分析判断．【解答】解：1994不是4的倍数，1994年是平年，二月有28天，所以李芳是1994年2月29日出生的说法是错误的；故答案为：错误．【点评】解答本题关键是判断1994年是不是闰年，判断方法是：是4的倍数的年份就是闰年，不是4的倍数年份就是平年，整百年必须是400的倍数．四、计算（24分）21．（6分）直接写得数620﹣60=5×6×6=84÷4=320÷8=27×30=36×2+18=81÷9=0×33=1.4﹣0.8= 6.8+0.5= 3.9﹣1.9= 4.3﹣2.7=【分析】根据整数加减乘除法的计算方法以及小数加减法的计算方法求解．【解答】解：620﹣60=5605×6×6=18084÷4=21320÷8=4027×30=81036×2+18=9081÷9=90×33=01.4﹣0.8=0.6 6.8+0.5=7.3 3.9﹣1.9=2 4.3﹣2.7=1.6【点评】本题属于基本的计算，在平时注意积累经验，逐步提高运算的速度和准确性．22．（10分）列竖式计算，带※的要验算87×63=75×36=504÷8=※414÷9=【分析】根据整数乘除法的计算方法进行计算即可，注意验算方法的选择．【解答】解：87×63=548175×36=2700504÷8=63※414÷9=46验算：【点评】考查了整数乘除法的笔算能力，按照各自的计算方法进行计算即可，注意验算方法的选择．23．（8分）脱式计算308+232﹣456（596﹣389）×881×7÷9672÷（2×3）【分析】（1）按照从左到右的顺序计算；（2）先算小括号里面的减法，再算括号外的乘法；（3）按照从左到右的顺序计算；（4）先算小括号里面的乘法，再算括号外的除法．【解答】解：（1）308+232﹣456=540﹣456=84（2）（596﹣389）×8=207×8=1656（3）81×7÷9=567÷9=63（4）672÷（2×3）=672÷6=112【点评】本题考查了简单的四则混合运算，计算时先理清楚运算顺序，根据运算顺序逐步求解即可．五、看图填空．（6分）24．（6分）看图填空（1）花园街的西面有电视台、小川家、电影院．（2）图书馆在小林家的南面，小川家在小林家的西南面，超市的西北面是邮局．【分析】依据地图上的方向辨别方法，即“上北下南，左西右东”，以及图上标注的其他信息，即可进行解答．（1）花园街的西面就是花园街的左面，左面有电视台、小川家、电影院．（2）小林家的下面是图书馆，所以图书馆小林家的南面，小川家在小林家的西面和南面之间，所以小川家在小林家的西南面，超市的西和北之间是邮局，所以超市的西北面是邮局．【解答】解：（1）花园街的西面有电视台、小川家、电影院．（2）图书馆在小林家的南面，小川家在小林家的西南面，超市的西北面是邮局．故答案为：电视台，小川家，电影院；南，西南，邮局．【点评】此题主要考查地图上的方向辨别方法的灵活应用．六、解决问题．（（1）-（5）每题5分，（6）题15分，共40分）25．（5分）（2014春•银川期末）一份稿件正好有4页，每页25行，每行28个字．这份稿件一共有多少字？【分析】首先算出每一页的字数，再乘页数即可解答．【解答】解：25×28×4=25×4×28=2800（个）；答：这份稿件一共有2800个字．【点评】此题还可以先求有多少行，再求有多少个字：28×4×25=2800（个）；解答注意列式的顺序与所求问题之间的联系．26．（5分）（2015春•长顺县期末）篱笆的长是多少米？这块菜地的面积是多少平方米？【分析】（1）篱笆的长，就是这块菜地的宽，即20﹣5=15（米）；（2）要求这块菜地的面积，因为这块菜地的形状是长方形，用长方形面积公式解答即可．【解答】解：（1）20﹣5=15（米）；答：篱笆的长是15米．（2）20×15=300（平方米）；答：这块菜地的面积是300平方米．【点评】此题考查了长方形面积公式的掌握与运用，以及从图中获取信息的能力．27．（5分）（2014春•陆良县期末）端午节，食堂特制了180个棕子，每两个装一袋，每三袋一盒．这些棕子可以装几盒？【分析】要求可以装多少盒，应先求出可以装多少袋，进而问题得解，据此解答即可．【解答】解：180÷2÷3，=90÷3，=30（盒）；答：这些棕子可以装30盒．【点评】此题考查整数小数复合应用题，解决此题的关键是先求出可以装的袋数．28．（5分）一个长方形与一个正方形周长相等，如果正方形的边长是18分米，长方形的长是24分米，正方形和长方形的面积各是多少？【分析】（1）根据正方形的面积公式S=a×a，把正方形的边长18分米代入公式，解答即可；（2）根据正方形的周长公式C=4a，求出正方形的周长，也就是长方形的周长，再根据长方形的周长公式，C=（a+b）×2，得出b=C÷2﹣a，由此求出长方形的宽；最后根据长方形的面积公式S=ab，求出正方形的面积．【解答】解：（1）正方形的面积：18×18=324（平方分米），（2）长方形的宽：18×4÷2﹣24，=72÷2﹣24，=36﹣24，=12（分米），长方形的面积：24×12=288（平方分米），答：正方形的面积是324平方分米；长方形的面积是288平方分米．【点评】此题主要考查了正方形的周长公式C=4a、面积公式S=a×a、长方形的周长公式C=（a+b）×2的变形及面积公式S=ab的实际应用．29．（5分）（2016春•英吉沙县期末）同学们出的墙报，长18分米、宽12分米．墙报的面积是多少平方分米？在墙报四周贴一条花边，花边的总长是多少分米？【分析】（1）已知长方形的长和宽，直接根据长方形的面积公式：s=ab，列式解答即可．（2）利用长方形的周长公式：C=（a+b）×2，直接列式解答即可．【解答】解：（1）18×12=216（平方分米）；答：墙报的面积是216平方分米．（2）（18+12）×2，=30×2，=60（分米）；答：花边的总长是60分米．【点评】此题主要考查长方形的面积和周长的计算方法．30．（15分）仔细观察下面的统计表，先把它填写完整，再回答问题．某校五（1）班语文能力考核合格人数统计表项目基础知识阅读能力写作能力课外积累人数性别合计3839男23198女222116（1）哪一个项目合格的人数最多？（2）这个班至少有多少人？（3）你对他们有什么建议？【分析】根据加法的意义，先求出基础知识合格的男生和女生一共多少人，课外积累合格的男生和女生一共多少人；再根据减法的意义，求出阅读能力合格的男生有几人，写作能力的合格女生有几人，然后补充完成统计表．（1）通过观察统计表可知：基础知识合格的人数最多．（2）可根据统计表中的数据将每个项目合格的合计数进行比较，得数最大的就是这个班级至少有的人数，所在的项目也是合格人数最多的．（3）这个班阅读能力合格的男生比女生少，课外阅读合格的男生人数比女生少，因此，建议这个班的男生在阅读能力和课外阅读两个项目上要多下功夫，取得好成绩．【解答】解：填表如下：某校五（1）班语文能力考核合格人数统计表基础知识阅读能力写作能力课外积累项目人数性别合计45 383924男2317198女222120 16（1）答：基础知识合格的人数最多．（2）45＞39＞38＞24，答：这个班至少有45人．（3）通过观察统计表可知：这个班阅读能力合格的男生比女生少，课外阅读合格的男生人数比女生少，因此，建议这个班的男生在阅读能力和课外阅读两个项目上要多下功夫，取得好成绩．【点评】此题考查的目的是理解掌握统计表的特点及作用，并且能够根据统计表提供的信息，解决有关的实际问题．七、选做题．（10分）31．（10分）火车站有个报时钟，5时整敲响5下，所用时间是8秒．9时整敲响9下，所用时间是几秒？【分析】敲5下，要经历5﹣1=4个间隔，需要8秒完成，那么每个间隔所经历的时间是：8÷4=2秒；9时整敲响9下，要经历9﹣1=8个间隔，再用每个间隔的时间乘上8即可求出所用时间是几秒．【解答】解：8÷（5﹣1）=8÷4=2（秒）2×（9﹣1）=2×8=16（秒）答：所用时间是16秒．【点评】关键是根据间隔数=时钟敲的下数﹣1与基本的数量关系解决问题．活动目的：教育学生懂得“水”这一宝贵资源对于我们来说是极为珍贵的，每个人都要保护它，做到节约每一滴水，造福子孙万代。

期末复习第十五章《电流和电路》过关练习(2) -人教版九年级物理全一册

人教版就年级物理上期期末复习第十五章《电流和电路》过关练习（2）一．选择题（共13小题）1．A、B是两个轻质泡沫小球，C是用毛皮摩擦过的橡胶棒，A、B、C三者之间相互作用时的场景如图所示，由此判断（）A．小球A带正电B．小球B带正电C．小球B可能不带电D．小球A可能不带电2．摩擦起电跟物质的种类有很大关系，严格说来，与物质的结构和化学成分有关。

各种物质中的电子脱离原子所需要的能量是不同的。

因此，不同物质的起电顺序是不同的。

见下列起电顺序表：起电顺序（正→负）有机玻璃玻璃毛皮丝绸纸金属硬橡胶石蜡涤纶硬塑料聚乙烯聚丙烯根据你所学的摩擦起电知识和起电顺序表，判断下列说法正确的是（）A．跟纸摩擦过的硬橡胶棒带正电B．跟纸摩擦过的玻璃棒带负电C．跟涤纶摩擦过的硬橡胶棒带正电D．跟涤纶摩擦过的玻璃棒带负电3．两个相同的验电器A和B，A带正电，B不带电，用金属棒把A、B连接起来后如图，则（）A．A中正电荷通过棒流向B，B带正电荷B．B中负电荷通过棒流向A，B带正电荷C．棒中有持续电流从A流向B，使B张角增大D．棒中有持续电流从B流向A，使A张角先减小，后增大4．壁挂式拿起即亮手电筒的实物及结构示意图如图所示，手电筒插入基座不亮，拔离即亮。

该手电筒的工作电路图是图中的（）A．B．C．D．5．如图电路中，开关S闭合后，电源被短路的是（）A．B．C．D．6．如图所示的电路图，下列说法中正确的是（）A．闭合S1、S3，断开S2，两灯并联B．闭合S2，断开S1、S3时，两灯并联C．闭合S1、S2，断开S3时，两灯都发光D．闭合S2、S3，断开S1时，L1不发光而L2发光7．汽车仪表盘上都有一指示灯，用它提醒司机车门是否关好。

四个车门中只要一个车门没有关好（相当于一个开关断开），该指示灯就会发光，在下列所示的电路图中，你认为符合上述要求的是（）A．B．C．D．8．如图所示的电路中，用甲、乙两只电流表测量电路中的电流，以下说法中正确的是（）A．甲表测的是L2的电流B．乙表测的是L2的电流C．甲表与灯L1并联了D．甲表测的是干路中的电流9．如图所示的电路中，电流表测量的是（）A．通过灯L1的电流B．通过灯L2的电流C．通过灯L1和灯L2的电流D．以上三种都有可能10．如图所示的电路中，闭合开关S1、S2，电流表、灯泡L1和L2均能正常工作。

高二英语期末复习重点(必背)

高二模块6期末复习重点（必背）高二Unit16重点句（15）+重点短语（21）重点句1.Around the end of the first century AD, a Roman writer called Pliny wrote about a terriblevolcanic eruption that he had witnessed as a young man.大约在公元一世纪末，一位名叫普利尼的罗马作家描写了他在年轻时心眼所见的一场可怕的火山爆发。

2.Pliny described a cloud coming down the mountain, blocking out the sun and buryingeverything in its path, including whole villages and towns.普利尼描述了一团云从山上下来，遮天蔽日，埋葬了它路上的一切，包括村庄和城镇。

3.This particularly sad event left a deep impression on Pliny who had lost an uncle in theeruption.这件尤其令人悲伤的事件给普利尼留下了深刻的印象。

在这次喷发中他失去了一个叔叔。

4.However, much more than buildings and objects,it is the forms of the people who werecaught in the disaster that have made the city a monument to human history.然而，不仅仅是建筑物和物体，那是那些死于这场灾难的人的形态使得这座城市成为人类历史的纪念碑。

5.Another man, lying on his side, looks as if he is trying to get up.另一个人，侧身躺着，看上去他似乎要努力站起来。

部编人教版初中数学七下--期末复习(2) 实数--(附答案)

期末复习(二) 实数考点一平方根、立方根、算术平方根的意义【例1】(1)4的算术平方根是( )A.2B.-2C.±2 216( )A.4B.±4C.2D.±238的相反数是( )A.2B.-2C.12D.-12【分析】(1)因为22=4,所以4的算术平方根是2;16，4的平方根是±2162；(3)因为23=8,38的相反数是-2,38-2.【解答】(1)A (2)D (3)B【方法归纳】求一个数的平方根、算术平方根以及立方根时，首先应对该数进行化简,然后结合它们的意义求解.只有非负数才有平方根和算术平方根,而所有实数都有立方根,且实数与其立方根的符号一致.1.求下列各数的平方根：(1)2549; (2)214; (3)(-2)2.2.求下列各式的值：364- 30.216.考点二实数的分类【例2】把下列各数分别填入相应的数集里.-3π,-22137327-390.416…无理数集合｛ …｝; 有理数集合｛ …｝; 分数集合｛ …｝; 负无理数集合｛ …｝.【分析】根据实数的概念及实数的分类,把数填到相应的数集内即可.【解答】无理数集合｛-3π7390.4…,…｝; 有理数集合｛-2213327-16…｝; 分数集合｛-2213,0.324 371,0.5,…｝; 负无理数集合｛-3π0.4…｝. 【方法归纳】我们学过的无理数有以下类型：π，3π等含π的式子233等开方开不尽的数;0.101 001 000 1…等特殊结构的数.注意区分各类数之间的不同点,不能只根据外形进行判断,327-是无理数.3.下列实数是无理数的是( )A.-1B.0C.πD.1 34.实数-7.5,15,4,38,-π,0.15&&,23中,有理数的个数为a,无理数的个数为b,则a-b的值为( )A.2B.3C.4D.55.把下列各数分别填入相应的集合中：+17.3，12，0，π，-323，227，9.32%，-316,-25考点三实数与数轴【例3】在如图所示的数轴上,AB=AC,A，B两点对应的实数分别是3和-1,则点C所对应的实数是( )3333【分析】由题意得AB=3-(-1)=3+1,所以AC=3+1.所以C点对应的实数为333【解答】D【方法归纳】实数与数轴上的点一一对应.求数轴上两点间的距离就是用右边的数减去左边的数；求较小的数就用较大的数减去两点间的距离;求较大的数就用较小的数加上两点间的距离.6.如图，若A是实数a在数轴上对应的点，则关于a，-a，1的大小关系表示正确的是( )A.a＜1＜-aB.a＜-a＜1C.1＜-a＜aD.-a＜a＜17.实数在数轴上的位置如图所示，下列式子错误的是( )A.a<bB.|a|>|b|C.-a<-bD.b-a>08.实数m，n在数轴上的位置如图所示，则|n-m|＝__________.考点四实数的运算【例4】30.125131623718⎛⎫⎪⎝⎭-【分析】将被开方数化简,然后根据算式的运算顺序求解.【解答】原式3184916316412-74+14=-1.【方法归纳】当被开方数是小数时通常将其化成分数,然后求其方根;当被开方数是带分数时通常将其化成假分数，然后求方根;当被开方数是a2时通常先计算出a2的值，然后求方根.9.35128131-10.计算：(-2)3×()24-+()334-×(12)2-20×|2-1|.复习测试一、选择题(每小题3分,共30分) 1.下列说法正确的是( )A.-2是-4的平方根B.2是(-2)2的算术平方根C.(-2)2的平方根是2D.8的平方根是4 2.下列语句正确的是( )A.如果一个数的立方根是这个数本身,那么这个数一定是0B.一个数的立方根不是正数就是负数C.负数没有立方根D.一个不为零的数的立方根和这个数同号，0的立方根是0 3.下列各式错误的是( )A.30.008=0.2 B.3127-=-13C.121=±11D.3610-=-102 4.在3.125 78，-5，227，3，5.27，3π，2-1中，无理数的个数是( ) A.1个 B.2个 C.3个 D.4个5.如图，数轴上A ，B 两点表示的数分别为2和5.1，则A ，B 两点之间表示整数的点共有( )A.6个B.5个C.4个D.3个6.估计10+1的值( )A.在2和3之间B.在3和4之间C.在4和5之间D.在5和6之间7.如图，数轴上点P表示的数可能是( )77 C.-3.2 108.3a3b=0，则a与b的关系是( )A.a=b=0B.a与b相等C.a与b互为相反数D.a=1 b9.已知n135n n的最小值是( )A.3B.5C.15D.2510.求1+2+22+23+…+22 014的值，可令S=1+2+22+23+…+22 014，则2S=2+22+23+…+22 015，因此2S-S=22 015-1，仿照以上推理，计算出1+5+52+53+…+52 014的值为( )A.52 014-1B.52 015-1C.2015514-D.2014514-二、填空题(每小题4分,共20分)11.已知a、b是两个连续的整数，且10则2a+b=__________.12.2x+，则2x+5的平方根是__________.13.-2716__________.14.对于任意不相等的两个数a，b,定义一种运算※如下：a※a b+,如3※32+5.那么12※4=__________.15.223+23338+384415+415一般性的结论是____________________(用含n的式子表示).三、解答题(共50分)16.(15分)计算：(1)25-55+35；(2)3+1+3+|1-3|；2531-144364-17.(10分)求下列各式中的x：(1)25(x-1)2=49; (2)64(x-2)3-1=0.18.(8分)已知|a-b-1|与3(a-2b+3)2互为相反数，求a和b的值.19.(8分)座钟的摆摆动一个来回所需的时间称为一个周期，其计算公式为T＝2l g中T表示周期(单位：秒)，l表示摆长(单位：米)，g=9.8米/秒2.假如一台座钟的摆长为0.5米，它每摆动一个来回发一次滴答声，那么在一分钟内，该座钟大约发出多少次滴答声？(可利用计算器计算，其中π取3.14)20.(9分)已知:M=3a b a b -++a+b+3的算术平方根,N=226a b a b -++a+6b 的算术平方根,求M ·N 的值.参考答案变式练习1.(1)±57； (2)±32； (3)±2. 2.(1)-4； (2)-0.6. 3.C 4.B 5.+17.3，12，0，-323，227，9.32%，-25，… π，316+17.3，-323，227，9.32%，… 12，0，-25，… 6.A 7.C 8.m-n 9.原式=8-9-1=-2.10.原式=-8×4+(-4)×14+20×222复习测试1.B2.D3.C4.D5.C6.C7.B8.C9.C 10.C11.10 12.±3 13.-1或-5 14.1221nnn+-21nn-为大于或等于2的自然数)16.(1)原式5；(2)原式333+3；(3)原式=5+1+12-4=14.17.(1)化简得(x-1)2=49 25.所以x-1=±7 5 .所以x=125或x=-25；(2)化简得(x-2)3=1 64.所以x-2=1 4 .所以x=9 4 .18.因为|a-b-1|≥0，3(a-2b+3)2≥0,又因为|a-b-1|与3(a-2b+3)2互为相反数，所以a-b-1=0，a-2b+3=0，解它们组成的方程组得a=5，b=4.19.∵T＝2lgT表示周期(单位：秒)，l表示摆长(单位：米)，g=9.8米/秒2.∴T=2lg1.42(秒). ∴在一分钟内，该座钟大约发出滴答声的次数为60÷1.42≈42.20.由题意,得2,22 2.a b a b -=-+=⎧⎨⎩解得4,2.a b ==⎧⎨⎩∴3a b ++423++96a b +462+⨯16 于是M ·N=3×4=12.。