1、如果a除以b的商是8，余数是3，Na么，100a除以100b所得的商是（ ）。 ），Yu数是（ 2、六（1）班昨天3人未Dao，出勤率为94%；今天只有1人未到，出Qin率为（ ）%。 3、一根绳子De长度等于它的 加上 米，这根绳子长（ ）Mi。 4、王老师买课桌椅，他带的钱Zhi买课桌可买40张，只买椅子可买60把，Yi桌一椅为一套，那么，他最多可买桌椅（ ）Tao。 ）张这样的纸才能拼成一个正方Xing。 5、有一种长方形纸长6厘米，宽4厘Mi，最少要有（ 6、下图是由两个正Fang形拼起来的，边长分别是7厘米和12厘米。Jia三角形的面积比乙三角形的面积多多少平方Li米？ 7、操作与应用 （Tu中每一小格的边长为1厘米） (1)Xiao朋友，你能画出和已知三角形面积相等的平Xing四边形和梯形吗？试试看。 (2)Tu中的三角形是一块稻田按1：2000的比Li尺画的，你能计算出这块稻田的实际面积吗？ 8、Yi种商品，成本价是60元，定价后打九折卖Chu，获得利润7.5元。你知道这种商品的定Jia是多少元吗？ 9、某工人生产一批Ling件，当统计员问生产情况时，工人回答说：“Yi完成的数量是没完成的 ，再生产600个Zheng好完成任务的 。”问：这个工人一共要生Chan多少个零件？ xkb1.com 10、Wo市为鼓励居民节约用水，规定每户每月用水Bu超过a立方米的按2.8元/立方米收费，Chao过a立方米的部分按4.8元/立方米收费。Xia表是芳芳家四、五、六月末的水表读数及交Fei情况： 四月 五月 六月 月末Shui表读数(立方米) 231 238．5 250 Ben月交水费（元） 12．6 26 ? Xiao朋友，你能根据上面提供的条件解答下面问Ti吗？ （1）当月用水不超过多少立Fang米时可享受优惠价2.8元/立方米？ （2）Fang芳家四月份用水多少立方米？ （3）Fang芳家六月份应交水费多少元？ Xi题答案: 1、商是 8 ，余数是 300 。 2、98% 3、1.5Mi 4、24套 5、6张 6、30Ping方厘米 7、 6÷1/2000=12000Li米=120米， 4÷1/2000=8000Li米=80米 120×80÷2=4800Ping方米。 8、（60+7.5）÷90%=75(Yuan) 9、600÷（1/3-2/7）=12600（Ge） 10、（1）：五月份用水量是：238.5-231=7.5（Li方米） （26-7.5×2.8）÷（4.8-2.8）=2.5（Li方米） 享受2.8元/立方米水的用量是：7.5-2.5=5（Li方米） （2）：2.8×5=14Yuan>12.6元。因此，四月份用水量是：12.6÷2.8=4.5（Li方米） （3）：250-238.5=11.5（Li方米）>5（立方米） 因此六Yue份应交水费： 2.8×5+4.8×（11.5-5）=45.2（Yuan）
Part I Listening Comprehension (30 marks) Section A (22.5 marks) Directions: In this section, you will hear six conversations between two speakers. For each conversation, there are several questions and each question is followed by three choices marked A, B and C. Listen carefully and then choose the best answer for each question. You will hear each conversation TWICE. Conversation 1 1. What is the boy doing? A. Reviewing his lessons in school. B. Studying at home. C. Taking the final exam. 2. What will the woman do when she gets home? A. Help the boy do his homework. B. Give the boy a present. C. Check the boy’s homework. Conversation 2 3. What is the woman’s reason for not going out with the man? A. She needs to wash her hair. B. She isn’t feeling well. C. She needs to have her hair cut. 4. What do we know about the man? A. He’ll see a movie with the woman tomorrow night. B. He washes his hair every night. C. He hasn’t won the woman’s heart yet. Conversation3 5. How long does the man ask the woman to wait? A. At least one week B. At most one week C. At least one month 6. What will the woman do next? A. Go to another shop. B. Wait for the man’s call. C. Try on another pair of boots. Conversation4 7. Why doesn’t Michael have good fiends in his class? A. They have different interests. B. His classmates d on’t have much spare time. C. It’s difficult to get along with his classmates. 8. What does Michael like? A. Music. B. Sports. C. Reading. 9. How did he get to know the boys from the other classes? A. His neighbors are in those classes. B. They attend the same club. C. He has the same teachers with them. Conversation 5 10. Where is the gas station? A. To the left. B. Next to the bank. C. Across from the post-office. 11. How will the man pay for the gas? A. By credit card. B. By cash. C. By check. 12. What does the woman suggest the man buy? A. Some postcards. B. Some souvenirs. C. A map. Conversation 6 13. What are the speakers going to do tonight? A. See a movie. B. Have a meeting. C. Attend a party. 14. What kind of food does the woman prefer? A. Chinese food. B. Mexican food. C. American food. 15. What do we know about Tina? A. She lives in the city. B. She is a humorous and nice girl. C. She and the woman went to the same school. Section B (7.5 marks) Directions: In this section, you will hear a short passage. Listen carefully and then fill in the numbered blanks with the information you have heard. Fill in each blank with NO MORE THAN THREE WORDS. You will hear the short passage TWICE. Weather in England Ⅰ. A forever topic ●People often talk about the weather because they can experience 16 in the same day. Ⅱ. Summer or winter ●You may see the British go 17 in winter and wear 18 in summer. Ⅲ. Just in case ●They always take an umbrella or 19 with them even when it is 20 . Part II Language Knowledge (45 marks) Section A (15 marks) Directions: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best completes the sentence. 21. When Li Lei was a small child, he hoped to be ______ policeman after he grew up and finally his dream came true. A. a B. an C. the D. https://www.fanwen99.cn/article/133055641.htmlBu填 22. More and more foreigners are working in China, ______? A. are they B. aren’t they C. do they D. don’t they 23. The day before yesterday, I ______ one of my old friends in the street. A. meet B. met C. will meet D. have met 24. ______ he did was quite right. A. That B. Which C. What D. Who 25. I failed in the examination last week and I regret _____________ hard. A. not to study B. did not study C. have not studied D. not studying 26. When hearing the good news, both the child and the mother ______ very happy. A. wasn’t B. were C. is D. aren’t 27. Don’t make any noise. The baby _________. A. sleep B. sleeps C. is sleeping D. slept 28. His tired face suggested that he ________ really tired after the long walk. A. had been B. was C. be D. should be 29. Do you live near the building ______ color is yellow? A. that B. which C. whose D. its 30. A great number of students said they were forced to practise the piano. A. to question B. to be questioned C. questioning D. questioned 31. Follow your teacher’s advice, __________ you will catch up with your classmates. A. or B. and C. as D. but 32. I think_____ necessary for a student to master a foreign language. A. its B. this C. that D. it 33. We __________3,000 English words by the end of last year. A. have learned B. had learned C. learned D. learn 34. You _________ pay more attention to your spelling next time. A. would B. should C. will D. shall 35. _____ in her best suit, the girl tried to make herself _____ at the party. A. Dressed; noticed B. Dressing; noticing C. Dressed; noticing D. Dressing; noticed Section B (18 marks) Directions: For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with the word or phrase that best fits the context. I will have many things to do in my future. I want to have a beautiful home and a good car. I want to get married and have children ... I want to join different clubs and organizations. I want to 36 children in trouble. I want to 37 around the world and see different places and different cultures. How can I do these things? If I 38 go to college, I will leave high school and begin working in a difficult 39 for little pay. I may work longer hours. I will have 40 time to look for a wife and get married. Children are out of the question because they 41 a great amount of time a nd money. I won’t be able to have a holiday to see the world42 I won’t have any paid vacation. However, 43 I can go to college, I will begin my life in the city I like. I can learn in and out of the classroom about the new and exciting ideas of technology. I can grow into a responsible adult. I can join college organizations, 44 new people, and have fun as well. I can receive my degrees and work where I want to work. I will be able to have the time and 45 to show my children 46 important knowledge is. I can find the wife of my dreams and have children, without 47 about money. And I will be able to travel around the world. 36. A. have B. help C. accept D. catch 37. A. show B. build C. travel D. clean[ 38. A. could B. will C. can D. can’t 39. A. job B. work C. money D. chance 40. A. more B. less C. longer D. fewer 41. A. need B. save C. have D. make 42. A. unless B. after C. when D. because 43. A. So B. If C. Only D. Suddenly 44. A. ask B. miss C. meet D. teach 45. A. ability B. space C. name D. scene 46. A. what B. which C. how D. when 47. A. worry B. worried C. talking D. worrying Section C (12 marks) Directions: Complete the following passage by filling in each blank with one word that best fits the context. Today we read a passage about “dying to be thin”. It was about a Canadian actress 48 had to go to hospital because she took some weigh-loss pills. She lost 7kg in 2 months. 49 , the pills contained something that causes liver failure, so she had to get 50 new liver. A young Chinese man donated more than half of his liver to save 51 life. Recently, my cousin learned about a new weight-loss pill 52 she really wants to try it. I’ve told her the story of the actress, but she won’t listen. She’s only 12, but has become a girl who is worried 53 her figure and how she looks. She often refuses to eat. My aunt is worried that my cousin will buy the pills in secret. She says health is 54 . She thinks that children must eat properly as they are growing all the time. What do you think I should do? 55 can I help my cousin? Part III Reading Comprehension (30 marks) Directions: Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B,C and D. Choose the one that fits best according to the information given in the passage. A Food British people like good food, and more than half of them go to a restaurant every month. Fast food is also very popular---30% of all adults have a hamburger every three months, but 46% have fish and chips! Sports British people don’t do a lot of sports. O nly 17% of people go swimming every week, about 9% go cycling and 8% play golf--- and only 6% of people play football (but 32% go to watch it). Cinema and TV Films are very popular in Britain, and about 60% of the young people go to the cinema every month. At home, men watch TV for about three hours every day ---30 minutes more than women. Holidays British people love going on holiday, and have 56 holidays every year. Most of these holidays aren’t spent in the UK---27% are in Spain. 10% are in the USA, and 9% are in France. Maybe this is because the weather in Britain isn’t very good! Presents British people don’t send others expensive presents like other Europeans. They often send chocolates, wine and flowers of good quality. 56. Which food could be more popular among British adults, a hamburger or fish and chips? A. A hamburger. B. Fish and chips. C. Both. D. Neither. 57. Those who are interested in movies are _____. A. men B. women C. young people D. old people 58. How long do British women spend watching TV every day? A. Three hours. B. Three hours and a half. C. Two hours. D. Two hours and a half. 59. British people’s favorite country for a holiday is _____. A. Spain B. France C. America D. Australia 60. What present don’t British people often send? A. Chocolates. B. Wine. C. Flowers. D. Money. B Everyone has got two personalities (Xing格) —the one that is shown to the world and the other that is secret and real. You don’t show your secret personality when you’re awake because you can control yourself, but when you’re asleep, your sleeping position shows the real you. In a normal night, of course, you often change your sleeping positions. The important position that best shows your secret personality is the one that you go to sleep. If you go to sleep on your back, you’re a very open person. You normally trust people and you are easily influenced by new ideas. You don’t like to make people unhappy, so you never express your rea l feelings. You’re quite shy and you aren’t very confident. If you sleep on your stomach, you are a person who likes to keep secrets. You worry a lot and you’re always easily becoming sad. You never want to change your ideas, but you are satisfied with your life the way it is. You usually live for today not for tomorrow. If you sleep on curled up (Zuo缩), you are probably a very nervous person. You have a low opinion of yourself and often protect yourself from being hurt, so you are very defensive. You’re shy and you don’t usually like meeting people. You like to be on your own. If you sleep on your side, you have usually got a well-balanced (Ping衡的) personality. You know your strengths and weaknesses. You’re usually careful. You have a confident personality. You sometimes feel worried, but you don’t often get unhappy. You always say what you think, even if it makes people angry. 61. You may find the passage in_____. A. a science magazine B. a guide book C. a sports newspaper D. a story book 62. When does the sleeping position best show your secret personality? A. In the daytime. B. At the beginning of sleep. C. At night. D. During the deep sleep. 63. Tina hardly tells her secrets to her friends. She probably goes to sleep _______. A. on curled up B. on her stomach C. on her back D. on her side 64. What does the word A. Yi怒的 B. 攻击性的 C. Wai向的 D. 有戒心的[ 65. What does the passage tell us? A. Sleeping on your side is the best way of sleeping. B. Changing positions will cause sleeping problems. C. Sleeping positions show people’s secret personalities. D. Enough sleep makes people look better and healthier. C Many people know the names Alexander Graham Bell and Thomas Edison. However, most people don’t know the name of the man who invented the television, Philo Farnsworth. Philo Farnsworth was born in 1906 and grew up on a potato farm. As a boy, he loved to learn about science, and he read a lot of science books. When he was only thirteen years old, he drew a picture of a machine that could send pictures as radio sends sounds. He got the idea from the way the potatoes were planted in the field. The potatoes grew in long lines, side by side. This made a shape in Philo’s mind. This shape helped Philo think of a way to send the TV picture onto a piece of glass. But he was poor, so Philo could not try to make his idea into a machine at that time. Later, Philo worked at many different jobs. He worked with trees. He worked on broken radios. He worked on trains. He also worked as a street cleaner. At last, two rich men heard about his idea for television, and they gave him the money to make it. On September 7th, 1927, they watched Philo test the machine he built. When Philo turned on the machine, a small line could be seen on the glass. Philo said, “There you have it, electric television.” Later, a big company, RCA, said they had made the first television. Philo had to spend a lot of money on lawyers to fight them. Finally, he won. Then, World War Two started in 1939. During the war, Philo spent a lot of money helping the US army instead of building up his television company. After the war, other bigger, richer companies started making televisions. In the end, Philo had to sell his company. 66. Why does the author mention Bell and Edison at the beginning of the text? A. To remember both of them. B. To prove their wisdom. C. To introduce the topic of the text. D. To explain their relationships. 67. According to the text, how old was Philo when he finished his invention of TV? A. 27 years old. B. 21 years old. C. 33 years old D. 39 years old 68. Philo Farnsworth got the idea for TV from ______. A. the radio B. science books C. potato fields D. a machine 69. The underlined part “building up” in the last paragraph probably means “______”. A. starting B. selling C. putting up D. making bigger 70. Which is the correct order of the following events? a. Two rich men gave Philo money to do experiments. b. Philo sold his own company. c. Philo beat RCA in law. d. Philo fixed broken radios. e. Philo showed his invention to others. A. d, a, e, c, b B. e, d, c, b, a C. d, c, e, b, a D. a, c, b, d, e Part IV Writing (45 marks) Section A (10 marks) Directions: Read the following passage. Fill in the numbered blanks by using the information from the passage. Write NO MORE THAN THREE WORDS for each answer. Chinese are very generous(Kang慨) when it comes to educating their children. Parents often send their children to the best schools or even abroad. They also want their children to take extra -course activities. The Chinese believe that the more expensive an education is, the better it is. So parents will spend unreasonable amount of money on education. Even poor couples will buy a computer for their son or daughter. As a result, parents can see that their children have some skills that others don’t have. And their children will probably do better in study in the future. But the problem is that parents are not educating them the most important skills they need—to be confident, happy and clever in life. In fact, the best education can also be very cheap. Parents can achieve this by teaching practical skills like cooking, sewing and doing other housework. Teaching a child to cook will improve many of the skills that he will need later in life. Cooking needs patience and time. It is an enjoyable but difficult experience. A good cook always tries to improve his cooking, so he will learn to work hard and finish his job successfully. His result, a well-cooked dinner, will give him much satisfaction and a lot of confidence. Besides, some old machines, such as a broken radio or TV set that you give your child to play with will make him curious and arouse(Ji发) his interest. Your child might become an engineer when he grows up. These activities are not only teaching a child to read a book, but rather to think, to use his mind. And that is more important. What Chinese parents do in 71.________ Ⅰ. Parents’ belief the72.________ they spend on education, the better Ⅱ. Phenomena 1. sending children to the best schools or abroad 2. letting children 7 3.________ 3. 7 4.________for children even if they are poor Ⅲ. 75.________ 1. children’s skills different from others 2. children’s performance in study in the future 76.________ Ⅳ.77.________ children’s lack of cleverness, 78.________ Ⅴ. Solutions 1. teaching children 79.________ such as cooking, sewing and doing other housework 2. letting children play with old machines to arouse their 80.________ Section B (10 marks) Directions: Read the following passage, Answer the questions according to the information given in the passage. Have you ever stayed in a hotel? Most Chinese hotels often provide guests with things like disposable (Yi次性的) toothbrushes, toothpaste, shampoo and slippers. Many guests like the idea because they don't have to bring their own. But, if you travel to Beijing, remember to bring your own things. Starting from June, some hotels in Beijing will no longer provide guests with these disposables. They want to ask people to use less disposable things. Many disposable things are made of plastic, not easy to rot away. People throw them away after using them only once. It is a waste of natural resources and is very bad for the environment. Do you know, one Chinese person makes as much as 400kg of waste a year! Most of that waste comes from disposable things. In Beijing, people throw away about 19,000 tons of plastic bags and 1,320 tons of plastic lunch bowls every year! Plastic can take between 100 and 400 years to break down. So the less plastic we throw out, the better. So, wherever you travel, bring your own things and use them again and again. At home and school, you can also do something to make our world a better place. Try to use daily necessities (Ri用品)once more. Use cloth shopping bags, not plastic ones. After using a plastic bag, wash it out and let it dry. Then you can use it over and over again. Do not use paper cups. At your school canteen, use your own bowl and chopsticks instead of disposable ones. 81. Please list at least 4 disposable things mentioned in the passage. (No more than 5 words) 82. What will happen in some hotels in Beijing starting from June according to the passage? (No more than 9 words) 83. Why is it bad to throw disposables away after using them only once? (No more than 15words) 84. How can we be more environmentally friendly when we are in our canteen? (No more than 11 words) Section C (25 marks) Directions: Write an English composition according to the instructions given below in Chinese. Qing以My favorite sport为Ti,写一篇英语短文。要求涵盖以下要点: 1. Jie绍你喜欢的体育运动项目,任何运动或体育Duan炼项目皆可; 2. 喜欢这一体育Yun动项目的理由; 3. 做此体育运Dong时要注意的事项。 注意:1. 词Shu120左右;2. 可以适当增加细节,以Shi行文连贯。 凤凰县华鑫中学2011-2012Xue年高二下(2月)月考试题 高二英Yu参考答案 My favorite sport Fu: 听力材料 SECTION A Conversation 1 W: Hi, Bob. Are you studying at home now? M: Yes, mum. W: Study hard or you’ll fail the final exam again. M: Ok, I will study hard. W: Don’t make empty promises. I’ll check your homework when I get back tonight. If you do well, I’ll give you a reward. Conversation 2 M: Would you like to come to the cinema tonight? W: I can’t. M: Why not? W: I’ve got to wash my hair tonight. M: Ok, what about tomorrow night? W: I can’t tomorrow night, either. M: Why not? W: I’ve got to wash my hair again. M: Do you wash your hair every night? W: It depends. M: Depends on what? W: It depends on who asks me to go to the cinema. Conversation 3 W: I love this pair of jeans. M: Please try them on if you like. The fitting room is right over there. W: Thank you. M: Do they fit? W: No, this size is a little too large for me. Have you got anything smaller? M: Yes, I’ll show you. Oh, sorry, they are all sold out. W: When can I get a smaller one? M: In a week at the earliest. W: That’s too long for me. I can’t wait until then. M: Maybe you can find some in the jeans shop next door. W: Do you think so? M: You can try. W: Thanks. Bye-bye. Conversation 4 W: Do you have good friends in your class, Michael? M: Not really. But I have some good friends in other classes. W: How come? Is it difficult to get along with your classmates? M: Not exactly. My classmates just don’t share my interests. W: What are your interests then? M: I like sports and I play sports every day, but my classmates don’t. Some of them like reading while others like music. So in my spare time I seldom play with them. W: Then how did you get to know your friends in the other classes? M: We ll, two of them are my neighbors. We’ve been playing together since we were babies. And the other boys are their classmates. W: I see. Conversation 5 M: Excuse me, Miss. I’m new to this area and I’m running out of gas, and I can’t seem to find a gas station anywhere around here. Can you direct me to the nearest one? W: No problem. First you take a left at the light. Go west for about a mile and there will be one on your left, next to the post-office. M: I didn’t quite catch that. Would you mind going over t he directions one more time? W: No problem. Take a left at the light and continue on that street until you see the post-office on your left. The gas station is right next to the post-office. You can’t miss it. M: Thanks. Does the gas station accept credit cards? W: No, it doesn’t. But there’s a bank across the street from it, and you can get money there if you want. M: That’s probably what I’ll do. W: You also might consider buying a map at the gas station. This is a rural area, so it’s very easy to get lost. M: I think I’ll do that. I really appreciate your help. W: It’s my pleasure. Conversation 6 M: So, Jane, where are we meeting these friends of yours tonight? W: Oh, didn’t I tell you? We’re going to see a movie. M: Yeah? What movie? W: I’m not sure. I know it’s one of those action movies. M: Oh, no! Can’t we see a romantic movie? Action movies are too violent and stupid. W: I know, but my friends really want to see this one. M: Ok, then what about dinner? Should we take them out for some Chinese food? W: I’d prefer Mexican. I’m not too good with chopsticks. M: All right, I wouldn’t want you to spill food on yourself in fro nt of your old friends. W: They’re not just my old friends. You know one of them, Tina. M: Yeah, we live in the same town and we went to the same school. W: She’s beautiful and funny. I like her very much. M: Yeah, she is a nice girl. Are we taking the bus? W: No, the subway is faster. Did I tell you we have to be there in 30 minutes? SECTION B In England, people often talk about the weather because they can experience four seasons in the same day. In the morning, the weather can be warm just like in spring. An hour later, black clouds might come and then it might rain. The weather might get a little cold. In the late afternoon, it will often be sunny. The sun will begin to shine, and it will be like summer at this time of day. In England, people can also have summer in winter, or have winter in summer. So sometimes in winter they can swim, and sometimes in summer they should wear warm clothes. If you go to England, you will see that some English people usually take an umbrella or a raincoat with them even when it is sunny in the morning, but you should not laugh at them. If you don’t take an umbrella or a raincoat, you might regret it later inthe day.
1.的倒数等于() A.-2 B.2 C. D. 2.Di29届北京奥运会火炬接力活动历时130Tian,传递行程约为137000km,用科学Ji数法表示是() A.B.C. D. 3.Xia列各式中,正确的是( ) A. B. C. D. 4.Xia列代数式: (1) ,(2) ,(3) ,(4) ,(5) (6) ,(7) (8) ,(9) Zhong,整式有 ( ) A.3个 B.4Ge C.6个 D.7个 5.Xia列说法中正确的是( ) A.0Shi最小的数 B.最大的负有理数是—1 C.Ren何有理数的绝对值都是正数; D.Ru果两个数互为相反数,那么它们的绝对值相Deng 6.下列各式正确的是 ( ) A.B. C.D. 7.Jin年某种药品的单价比去年便宜了10%,如Guo今年的单价是a元,则去年的单价是 ( ) A.Yuan B.元 C.元 D.Yuan 8.当x=2时,代数式ax3+bx+1De值为3,那么当x=-2时,代数式ax3+bx+1De值是( ) A .1 B. -1 C. 3 D . 2 Er、用心填一填(第9-11题每空1分,第12-19Ti每空2分,共26分) 9. 的Xiang反数为_____________。绝对Zhi等于3的数是。立方得-8的有理数是。 10.-[-(+5)]=___________; +(-|-3.2|) =__________ 11.Dai数式是______次单项式,系数为________。 Duo项式是_____次________项式,Zui高次项是_________。 12.Ruo单项式与的和仍为单项式,则其和为 13.Guan于x的方程是一元一次方程,则=. 14.Ruo,则 = . 15.Ruoa、b互为相反数,c、d互为倒数,且mDe绝对值为2,则。 16.若关于a,bDe多项式不含ab项,则m= 。 17.Ru果关于的方程2 +1=3和方程的解相同,Na么的值为________ 18.Zai如图所示的运算流程中,若输出的数y = 5,Ze输入的数x=_________. 19.Xia图是某同学在沙滩上用石于摆成的小房子. Guan察图形的变化规律,写出第9个小房子用了Kuai石子.第n个小房子用了____________Kuai石子. 三、解答题(本大题共9题,Man分58分) 20.(每题3分,共12Fen) (1)(2) 21.(Mei小题3分,共6分)解下列方程: (1)(2) 22.(Mei小题4分,共8分)先化简,再求值: (1),Qi中,. (2)化简: 23.Yi知 ,求下列代数式的值。(4分) (1)(2) 24.Yue读下列材料,并回答问题(本题满分4分) Ji算机利用的是二进制数,它共有两个数码:0,1;Jiang一个十进制的数转化为二进制数,只需把该Shu写成若干个的数的和,依次写出1或0即可。 Li如十进制数19可以按下述方法转化为二进Zhi数: . 二进制数11011可以Zhuan换成十进制数为: (1)将104Hua成二进制(2)将1011101化成十进Zhi 25.(本题6分) “十、Yi”黄金周期间,瘦西湖公园在7天假期中每Tian旅游的人数变化如下表(正数表示比前一天Duo的人数,https://www.fanwen99.cn/article/133046937.html负数表示比前一天少的人数) Ri期 10月1日 10月2日 10月3日 10Yue4日 10月5日 10月6日 10月7Ri 人数变化 单位:万人+1.6 +0.8 +0.4 -0.4 -0.8 +0.2 -1.2 (1)Ruo9月30日的游客人数记为a万,请用a的Dai数式表示10月2日的游客人数?(2分) (2)Qing判断七天内游客人数最多的是哪天?(2分) (3)Ruo9月30日的游客人数为2万人,门票每人80Yuan.问黄金周期间扬州瘦西湖公园门票收入 Shi多少元?(用科学计算法表示)(2分) 26. Yi兴是有名的陶都,周末小明陪爸爸去陶瓷商Cheng购买一些茶壶和茶杯,了解情况后发现甲、 Yi两家商店都在出售两种同样品牌的茶壶和茶Bei,定价相同:茶壶每把定价30元,茶杯每Zhi定 价5元,且两家都有优惠:甲店Mai一送一大酬宾:(买一把茶壶赠送茶杯一只);Yi店全场9折优惠。小明爸爸需茶壶5把,茶Bei若干只(不少于5只)。 (1)设Gou买茶杯x只,若在甲店购买则需付 _________________Yuan;若在乙店购买则需付 ____________________ Yuan。(用含x的代数式表示并化简。)(2分) (2)Dang需购买15只茶杯时,请你去办这件事,你Da算去哪家商店购买?为什么?(2分) (3)Dang购买茶杯多少只时,两种优惠办法付款一样?(2Fen) 27.已知在纸面上有一数轴(Ru图),折叠纸面. (6分) (1)Ruo1表示的点与-1表示的点重合,则-7表Shi的点与数表示的点重合;(2分) (2)Ruo-1表示的点与5表示的点重合,回答以下Wen题: ①13表示的点与数表示的点Zhong合;(2分) ②若数轴上A、B两Dian之间的距离为2009(A在B的左侧),QieA、B两点经折叠后重合,求A、B两点表Shi的数是多少?(2分) 28.寻找Gong式,求代数式的值:从2开始,连续的偶数Xiang加,它们的和的情况如下表: …… …… (1)Dangn个最小的连续偶数相加时,它们的和S与nZhi间有什么样的关系,用公式表示出来; (2Fen) (2)(4分)并按此规律计算:(a)2+4+6+…+300De值;(b)162+164+166+…+400De值. 参考答案 2012.11 Ti号 1 2 3 4 5 6 7 8 Xuan项 A C A C D C D B 9. 10. 11.6 6 4 12. 13. 2 14. 15. 5 16. -6 17. 7 18.9Huo10 19. 117 20.(1) … (1Fen) (2)… (1分) … (3Fen) … (2Fen) …(3分) (3)… (1Fen) (4)… (1分) … (2Fen) … (2Fen) =-1…(3分) … (3Fen) 21.(1) … (1分) (2) … (1Fen) … (2分) … (2Fen) … (3分) …… (3Fen) … (4分) … … (4Fen) 22.(1)… (2分) … (4Fen) (2)… (2分) … (4Fen) 23.(1)5… (2分) (2)1… (2Fen) 24.(1)104… (2分) (2)93 … (2Fen) 25.(1)… (2分) (2)10Yue3日… (2分) (3)2.176 ×107 (2Fen) 26.(1)(2)200 202.5 Qu甲店便宜(3)20 27.(1)7 (2)①②A: B:1006.5 28.(1) (2)