bbf课时作业优化英语九年级
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bbf课时作业优化英语九年级篇一
人教版2016年秋季九年级英语上Unit5同步练习含答案
Unit5 What are the shirts made of
一、单项选择（共15小题；共15分）
1.
A. tell A. are enjoyed
B. have told B. was enjoyed
C. are told C. were enjoyed
D. told D. is enjoyed
2. 3. --- Look at the sign on the right.
A. doesn't allow C. didn't allowed A. cause
B. causes
B. isn't allowed D. wasn't allowed C. is caused
D. are caused
4. 5. --- Don't you see the sign "No Parking!" on the right?
A. wasn't allowed C. won't allow A. known of
B. known as
B. isn't allowed D. doesn't allow C. known about
D. known for
6. 7. --- China is getting better and better at making high technology products.
A. not buying A. living
B. not to buy B. live
C. to buy C. lively
D. buying D. alive
8. 9.
A. from; from B. from; of C. of; from D. of; of
A. from; in A. are dropped C. are being dropped A. plant
B. of; in C. from; on B. drop D. have dropped
D. of; on
B. is planted C. were planted D. are planted
13. --- Does she like singing English songs?
A. often does B. is often heard C. often hears
A. treats A. allow
B. treated B. allowed
C. is treated C. are allowed
D. was treated D. were allowed
二、单词拼写(单句首字母填空)（共15小题；共15分）
30. His students like the teacher because he always has a way of making his class and interesting.
三、单词拼写(根据中文提示拼写单词)（共15小题；共15分）
避开) the number 13 because they believe it is unlucky. 生产) this kind of engine.
广泛地) spoken language in the world. 完成) his work next week.
生动的) and interesting. We all like her very much. 国际的) meeting be held? 本地的) restaurant?
表面) of the earth is covered with water. 交通) lights are red,you must stop and wait.
形式) of diary. 避免) answering my questions yesterday. 生产) computers. 广泛) used in the world today. 完整的) sentence.
生动的,活泼的).
四、翻译(根据中文提示完成句子)（共5小题；共10分）
由……组成) the stones.
47. 今天各个领域都在应用电脑。
48. 中国什么地方生产茶叶？
49. 你们家乡以什么而出名？
50. 电脑如今被人们广泛地使用。
五、完形填空（共10小题；共15分）
包括) dolls, clothing, beds, her friends, brothers, sisters, cousins, different kinds of animals and so on. Barbie has cook.
my daughter to the world of Barbie. She has a lot of dolls, clothes, vehicles(车辆) and houses. And she do it just for fun.
can start as a little girl and go on to an adult.
51. A. girl 52. A. jobs 53. A. kept 54. A. mustn't 55. A. too 56. A. went out 57. A. delicious 58. A. when 59. A. usually 60. A. believe
B. hobby B. clothes B. got B. couldn't B. also B. gave out B. nervous B. what B. never B. find
C. toy C. houses C. spent C. might not C. either C. came out C. important C. why C. hardly C. see
D. collection D. friends D. made D. shouldn't D. still D. got out D. popular D. how D. really D. know
六、阅读理解（共17小题；共34分）
A
Look at the first picture on the right side. It's called an ice-skating shoe. In the past days, people wore it to skate on ice.
Three hundred years ago, there was a man called Hans Brinker. He lived in Holland in Europe. He wanted to enjoy skating in summer and winter. By changing the shoes a little, he could skate on roads without ice.
However, the first pair of real roller-skating (轮式溜冰) shoes was invented by Joseph Merlin. He lived in Belgium in Europe. A hundred years later, thousands of people were roller-skating in the USA, and it got popular in the 1930s. That is how roller-skating shoes were invented.
In 1979, Scott and Brennan Olson made the first rollerblading shoes we are using now. The two brothers lived in Minneapolis in the USA. They built a factory to make the shoes later. They made a lot of
money because the sport of rollerblading became more and more popular.
61. Where was the idea of skating on the road without ice first put forward?
A. In America. A. Hans Brinker. C. Scott Olson. A. In Belgium.
B. In England. C. In Holland. B. Joseph Merlin. D. Brennan Olson.
D. In Belgium.
62. Who made the first real roller-skating shoes?
63. Where was the first roller-blading shoe made?{bbf课时作业优化英语九年级}.
B. In Holland. C. In America. D. In Japan.
64. Which of the following is NOT true according to the passage?
A. The second picture is a roller-skating shoe. B. Now we are using the third shoe for skating. C. The second shoe was popular in 1920s. D. Scott and Brennan Olson were brothers. A. The First Ice-skating Shoes C. The Great Inventors
B. Different Kinds of Sports D. How Skating Shoes Developed
65. What's the best title of the passage?
B
One day I was walking near the People's Square, when I saw a small crowd of people. I walked over to see what they were looking at. In the middle of the crowd there was a tall, old man. He was wearing a big hat on his head. He was dressed in a dark shirt and trousers, and white shoes. In his hands he was holding a large pair of scissors. He was cutting something carefully, using black paper.
A young girl sat on a chair in front of him. She was looking up at her father, who was standing near her. The girl had lovely, long hair. Then I realized that the old man was cutting a picture of her. The sign next to the man said "Paper Pictures, ￥50". One man in the crowd was holding a black paper picture. He was showing it to a woman. The woman was looking angry.
I watched the old man carefully. He was very skillful. I thought about having my picture done, but then I looked up at the clock. It was 5 p.m. Time for dinner. I left the little crowd, and went towards the underground station.
66. Where do you know the story happened?
A. In the People's Square. C. Near a photo shop. A. A young girl. C. An old woman. A. the sign near the man B. the man cutting paper pictures C. the black paper picture D. the father standing nearby A. He was very careful. C. he was very funny. A. stay there longer C. buy the paper picture
B. In the underground station. D. At the airport. B. A tall, old man. D. A young boy.
67. Who stood in the middle of the crowd?
69. What does the writer think of the old man?
B. He was very kind. D. He was very skillful. B. have his picture cut D. leave the little crowd
C
When a person passes through the customs(海关) between two countries, he would be questioned by a customs inspector(检查员). If a person brings in goods of great value, the inspector may ask him to pay taxes on them. Some people try to hide the valuables they have with them so that they will not have to pay these taxes. But customs inspectors are hard to fool.
Inspector Joseph Koehler has worked for the U.S. Customs Service for years. One day a group of passengers arrived on a flight from Belgium.
Koehler took special notice of one of the women among them. At first he did not know what made him pick her out of them—the woman's baggage was made of a purse and two suitcases. She showed no sign of fear when Koehler opened them. Yet Koehler could not rid(使…摆脱) himself of the feeling that something was wrong.
Suddenly he knew what was. The woman was too tall. This woman's height didn't seem right somehow. Then it was found that the bottom parts of her shoes were filled with something. The inspector opened them. A handful of diamonds fell out on the floor. More jewels were found under a false bottom in one of her suitcases. Their total weight was 3,387 carats. It was one of the largest diamond hauls(缴获) ever made by the U.S. Customs.
A. only asked the women passengers to pay taxes on the valuable goods B. had worked for almost one year in the US customs
bbf课时作业优化英语九年级篇二
人教版2016年秋九年级英语Unit3同步练习含答案
Unit3 Could you please tell me where the restrooms are
一、单项选择（共20小题；共20分）
1. --- Her bike was broken, so she had to walk.
A. why A. when
B. how B. how
C. when C. where
D. where D. why
2. 3. --- Sure. I prefer to take a plane.
A. whether A. take place C. is taking place
B. why C. when B. took place D. is taken place
D. how
4. 5. --- Tom, what did the girl say?
A. how could she get to the bank B. where was the hospital C. where the post office was D. how could she find a fruit store
6. --- Try Music. World on Huangyuan Street.
A. why to buy a CD C. how to choose a CD A. speaking A. below A. polite
B. spoken B. above B. unhappy
B. where to get a CD D. when to record a CD C. be spoken C. beside C. terrible
D. to speak D. among D. impolite
7. 8. 9. --- That's wonderful. You can spend less time shopping.
A. safe A. where A. how soon
B. convenient B. why B. how long
C. beautiful C. how C. how often
D. fascinating D. when D. how much{bbf课时作业优化英语九年级}.
--- He will help us with our English.
A. why B. when C. how D. where
14. --- Has Wendy handed in her application form?
A. will hand
--- Of course.
B. would hand C. has handed D. had handed
A. where's there a good place to eat B. where there's a good place to eat C. where is a good place to eat D. where a good place is to eat A. what to work out C. how to work it out A. going A. beside A. polite A. convenient
B. to go B. besides B. impolite B. fair
B. to work it out D. how to work out it C. goes C. between C. politely C. easy
D. go D. in front D. impolitely D. comfortable
二、单词拼写(单句首字母填空)（共10小题；共10分）
--- It faces south.
三、单词拼写(根据中文提示拼写单词)（共10小题；共10分）
在旁边) his mother all night at the party. 便利的；方便的) to pay by credit card. 改正) my mistakes?
不礼貌的). 地址)?
中心) city of Hainan Province. 角) of the classroom, on the right side. 地下的) parking. 方向) is the bus coming?
仓促).
四、翻译(根据中文提示完成句子)（共5小题；共10分）
41. 想知道这架飞机有多重是很困难的。 42. 我还不能决定是否参加这个派对。
43. 天气预报有没有报道如此潮湿的天气将持续多久？ 44. 你能给我一些关于怎样学好英语的建议吗？
45. 随着时间的流逝，他忘记了那些不愉快的事情。 五、完形填空（共10小题；共15分）
talk, laugh, and do things we need to be alone. We don't always want people is surprising to find out how much we like new people when we get to know them.
There's more good news for people who have friends. They live longer than people who don't. Why? It 46. A. look 47. A. It 48. A. Hardly 49. A. alone 50. A. friendly
C. just the same 51. A. friendly 52. A. angry 53. A. look for
B. watch B. He B. Nearly B. away
C. feel C. There C. Suddenly C. all over B. kind D. quite different{bbf课时作业优化英语九年级}.
D. see D. Someone D. Certainly D. around
B. good B. sad B. find
C. pleased C. happy C. make
D. friends D. alone D. know
54. A. happier 55. A. less
B. stronger B. better
C. kinder C. little
D. richer D. no
六、阅读理解（共16小题；共32分）
A
This is an online discussion group where people can post(发布) comments about a topic. Read the post from the travel forum(论坛).
Answers To All Your Travel
A. he got a new job B. he would meet his boss
C. his boss invited him to his home for dinner
D. he wanted to know business behavior and manners in the USA A. 开除.
B. 移开.
C. 脱下.
D. 去掉.
57. What's the meaning of the underlined word "remove"?
A. bring a small gift from your country B. open the gift right away
C. enter the house with your shoes on D. ask a person's age
A. shouldn't use your hands to eat fried chicken
B. can't stand and talk in the kitchen while the host is cooking C. can't talk with all the family members D. probably won't speak about business A. different countries have different customs B. Japanese have the similar customs with Americans
C. everyone may take part in the dinner table conversation in Korea D. only people from Korea and America can answer Jun's question
B
I had little in the way of money when I took this job in Ft. Lauderdale. One noon, I felt very hungry, so I sat outside at a little park and had a small piece of bread, ate half with a glass of water. I was OK with that. I thought about my work and enjoyed the sun, birds and people, taking out any problems I had.
bbf课时作业优化英语九年级篇三
2014-2015学年(上)九年级英语12月检测参考答案
2014-2015学年（上）九年级 英语期中检测
参考答案
第一部分：单选（90分）
1-20 BBBCC AABAB CBBAA BCBCB
21-35 BCBDD BBAAB DBDBD
36- 50 BADAC ADCDA BABCD
51-70 BDACC BDABA DADBC CBBDA
第二部分：（30分）
I. 用说给词的适当形式填空。
1.centuries 2.politely 3. valuable 4. sleepy
5. jumping 6. chatting 7. going
II、情景交际。（每小题1分，共5分）
1—5 BFDAC
III、首字母完成短文。
1．off 2.from 3．millions 4．example
5. use 6.Even 7．take 8．better
Ⅳ.书面表达：（15分）
Dear Tom,
I'm very glad to tell you something about Spring Festival. It’s a traditional festival in China. It comes in winter.
It’s time to get new. We usually clean and decorate our house carefully before it comes. I always help my mother clean the windows and wash the clothes. We put on chunlian on the door and chuanghua on the window.
It’s time to get together. Everyone go home to get together with their family, though someone is far away from home. They must have dinner together on that day. They must visit their relatives and friends and say “Happy new year” to them. When the kids greet their grandparents, they can get money.
Yours，
Li Lei
bbf课时作业优化英语九年级篇四
九年级模拟考试英语
九年级模拟考试 英语
注：本测试的知识点范围是七上、七下和八上。
一、单项选择（共15小题；每小题1分，满分15分）
从每题所给的A、B、C、D四个选项中，选出最佳选项。
1. --- How do you usually come to school?
--- ________. I live too far away from our school.
A. On foot B. By bikes C. By bus D. By a car
2. --- ________ does his sister do online shopping?
--- I‟m not sure. Maybe twice a week.
A. How long B. How often C. How soon D. How many times
3. Thanks for ________ me about JSTV‟s You Are the One. Meng Fei sounds really excellent.
A. telling B. saying C. talking D. speaking
4. I was reminded of the matter ________ the evening of April 4 and I couldn‟t sleep ________ whole night.
A. in; a B. in; the C. on; a D. on; the
5. The company will offer a reward for the best designs, no matter how much they will ________.
A. spend B. take C. cost D. pay
6. Fear went through his mind after the accident, but he felt lucky since he was still ________.
A. living B. live C. alive D. lively
7. The trip was so boring that all the tourists felt ________ on their way until a forest appeared.
A. sleep B. sleepy C. asleep D. sleeping
8. We must keep them away from the wetland ________ protect the wildlife around here.
A. so that B. because of C. in order to D. in order that
9. In the beginning, she ________ her mother‟s milk and couldn‟t look after herself.
A. drinks B. drank C. drunk D. was drinking
10. --- Why are you unhappy?
--- Kate ________ my dress for the party and then ________ it to someone I didn‟t know.
A. borrowed; lent B. lent; borrowed C. lent; lent D. borrowed; borrowed
11. In the last year alone, more than 260 types of animals disappeared or became more ________.
A. danger B. dangerous C. endanger D. endangered
12. --- Attention please. Your project ________ be finished by the end of this week. --- But we are up to our necks in work. ________ we finish it the next week?
A. can; May B. need; Can C. must; Can D. must; Need
13. I had waited for several weeks without __________ Sam so I e-mailed him again.
A. hearing from B. hearing of C. hearing about D. hearing out
14. They have discussed the plan for some hours but no agreement ________.
A. have got to B. has been arrived C. have arrived D. has been reached
15. I am wondering ________ my invitation and join me for the trip to Hainan this summer.
A. will John accept B. if John will accept
C. that John will accept D. when will John accept
二、完形填空（共15小题；每小题1分，满分15分）
阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项。
As a single mother of four children and working at a low-paid job, I couldn‟t get enough money for the family, but we had __16__ on the table, clothes on our backs, and if not a lot, always enough. Not knowing we were poor, my kids just thought I was __17__. I‟ve always been glad about that.
Christmas was coming. Although there wasn‟t enough __18__ for a lot of gifts, we planned to hold a family party. And the big excitement for the kids was the fun of Christmas __19__.
The children planned weeks before, asking __20__ what they wanted for Christmas. Luckily, I had saved $120 for them to buy __21__.
The big day arrived. I gave each kid a twenty-dollar note and __22__ them to look for gifts of about four dollars each. Then everyone scattered(散开). We had two hours to shop; then we would __23__ again at the “Santa‟s Workshop”.
On the way home, everyone was in high Christmas spirits, __24__ my younger daughter, Ginger, who was unusually __25__. She had only one small, flat bag with a few candies — fifty-cent candies! I was so angry, but I didn‟t say anything __26__ we got home. I called her into my bedroom and closed the door, ready to be angry again.
This is what she told me: “I was looking __27__, thinking of what to buy, and I __28__ to read the little cards on the „.‟ One was for a little girl, four years old, and all she __29__ for Christmas was a doll(玩具娃娃). So I took the card off the tree and bought the doll for her. We have so much and she doesn‟t have anything.”
I never felt so __30__ as I did that day.
16. A. bowls
17. A. busy
18. A. effort
19. A. shopping
20. A. the other
21. A. toys
22. A. made
23. A. draw
24. A. including
25. A. quiet
26. A. since
27. A. out B. forks B. serious B. room C. chopsticks C. strict C. time D. food D. kind D. money D. greetings D. all of them D. bills D. spoke D. meet D. beside D. sad D. until D. around B. traveling C. parties B. each other C. another B. clothes B. stay B. besides B. excited B. after B. over C. presents C. move C. happy C. while B. reminded C. invited C. except C. forward
28. A. forgot
29. A. wanted B. stopped B. did C. failed C. got D. hated D. played
30. A. painful B. rich C. helpless D. angry
三、阅读理解（共15小题；每小题2分，满分30分）
阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项。
A
Last week my youngest son and I visited my father at his new home in Tucson, Arizona. He moved there a few years ago, and I couldn‟t wait to see his new house and meet his friends.
My earliest memories of my father are a tall, handsome, successful man devoted to his work and his family, but uncomfortable with his children. As a child I loved him. He seemed unhappy with me if I didn‟t get A‟s in my exams and unhappy with my friends if their fathers were not as “successful” as he was. Whenever I went out with him on weekends, I used to try hard to think out things to say, feeling on guard.
On the first day of my visit, we went out with one of my father‟s friends for lunch at an outdoor cafe. We walked along that afternoon, did some shopping, ate on the street table, and laughed over my son‟s funny facial expressions. Gone was my father‟s critical(挑剔的) air and strict rules. Who was this friendly and interesting person now? What had made him so critical before?
The next day dad pulled out his childhood pictures and told me quite a few stories about his own childhood. Although our times together became easier over the years, I never felt closer to him at that moment. After so many years, I‟m at last seeing another side of my father. And I‟m he was.
31. Why did the writer feel bitter(痛苦) about her father when she was young?
A. He was silent most of the time. B. He was too proud of himself.
C. He expected too much of her. D. He didn‟t love his children.
32. When the writer went out with her father on weekends, she would feel ________.
A. safe B. sorry C. tired D. nervous
33. What does the writer think of her father after her visit to Tucson?
A. More critical. B. Easy-going and friendly.
C. More humorous. D. Strict and hard-working.
34. The underlined words in the last paragraph refer to ________.
A. the writer‟s son B. the writer‟s father
C. the friend of the writer‟s father D. the cafe owner
B
One afternoon last week, I saw three tearful children from my son‟s school being comforted by teachers. That morning, my 11-year-old had stomachaches. Talking to other mothers later, I heard about other children with stomachache or difficult sleeping the night before.
What caused so much pain? Sports day! Sports day might be necessary at some schools, but
not at a village primary school. For the children who can fly like the wind, sports day causes no problem. For those who are overweight or just not good at sport, it is nightmare(噩梦). Even for those who enjoy running but fall behind in front of so many students and their parents, it can prove a disaster.
Why do we put our children through the painful and difficult event every year? Some may say competition is helpful to build character; or it‟s taking part, not winning, that‟s important; or that‟s a tradition of school life. I just felt great pity for those children in pain.
Team games at the end of sports day produced some close races, wild enthusiasm(热情), lots of shouting — and were fun to watch. More importantly, the children who were not so fast or quick were hidden a little from everyone‟s eyes.
I wish that sports day could be given up or replaced(代替) with some other events. Perhaps an afternoon of team games, with a few races for those who want them, would be less stressful for the children and a lot more fun to watch.
35. What can we learn about the writer‟s son from Paragraph 1?
A. He talked with some mothers. B. Something was wrong with his stomach.
C. He had difficulty in sleeping. D. He comforted his classmates.
36. Sports day is still a yearly event in this school probably because __________.
A. this is a competitive city school B. children enjoy watching sports
C. it helps children lose weight D. it is a tradition of the school
37. What does the writer think about team games?
A. They should include more stressful races.
B. They are less fun for those who love running.
C. They should be given up at primary school.
D. They are acceptable only to some children.
C
Going green seems to be fad(时尚) for a lot of people these days. Whether that is good or bad, we can‟t really say, but for the two of us, going green is not a fad but a lifestyle.
On April 22, 2011, we decided to go green every day for a whole year. This meant doing 365 different green things, and it also meant challenging ourselves to go green beyond easy things. Rather than recycle and reduce our energy, we had to think of 365 different green things to do and this was no easy task.
With the idea of going green every day for a year, Our Green Year started. My wife and I decided to educate people about how they could go green in their lives and hoped we could show people all the green things that could be done to help the environment. We wanted others to know that every little bit helps.
Over the course of Our Green Year, we completely changed our lifestyle. We now shop at organic(有机的) stores. We eat less meat and choose green food. We have greatly reduced our buying we don‟t need. We have given away half of what we owned through websites. Our home is kept clean by vinegar(醋) and lemon juice, with no chemical cleaners(化学清洁剂). We make our
own butter, enjoying the smell of home-made fresh bread. In our home, anyone caught doing something ungreen might be punished.
Our minds have been changed by Our Green Year. We are thankful for the chance to have been able to go green and educate others. We believe that we do have the power to change things and help our planet.
38. What might be the best title for the passage?
A. Celebrating Our Green Year. B. Protecting the Planet.
C. Keeping Open-Minded D. Going Green.
39. It was difficult for the couple to live a green life for the whole year because_________.
A. they needed to complete unusual green tasks
B. they didn‟t know how to educate other people
C. they were unwilling to reduce their energy{bbf课时作业优化英语九年级}.
D. they were expected to follow the green fad
40. What did the couple do during Our Green Year?
A. They sold their home-made food.
B. They paid no attention to others‟ ungreen actions.
C. They chose better chemical cleaners.
D. They tried to get out of their ungreen habits.
41. What can we infer from the last paragraph?
A. The couple may continue their project in the future.
B. The government will give support to the green people.
C. Some people don‟t agree with the couple‟s green ideas.
D. Most people in their country are interested in Our Green Year.
D
Here is a surprising and important fact: Mental work(脑力劳动) alone can‟t make us tire. It sounds absurd(荒谬的). But a year ago, scientists tried to find out how long the human brain could work without reaching a stage of fatigue (疲劳). To the amazement of these scientists, they discovered that blood passing through the brain, when it is active, shows no fatigue at all! If we took a drop of blood from a day laborer(工人), we would find it full of fatigue toxins(毒素) and fatigue products. But if we took blood from the brain of an Albert Einstein, it would show no fatigue toxins at the end of the day.
In fact, brains can work as well at the end of eight or even twelve hours of effort as at the beginning. The brain is totally tireless. So what makes us tired?
Some scientists say that most of our fatigue comes from our mental and emotional(情绪的) attitudes(态度). One of England‟s most outstanding scientists, J.A. Hartfield, says, “The greater part of the fatigue is of mental origin(源于精神的). In fact, fatigue of physical origin(源于身体的) is rare.” Dr. Brill, a famous American scientist, goes even further. He says, “One hundred percent of the fatigue of sitting workers in good health is because of emotional problems.”
What kinds of emotions make sitting workers tired? A feeling of being bored, angry, nervous
bbf课时作业优化英语九年级篇五
九年级BBF答案 卷二十三
卷(二十三) 第二章 简单事件的概率
1. A 2. A 3. A 4. D 5. D 6. D 7. C 8. A 9. B 10. D 11.
114. 3
112115. 16. 17. (1) P＝ (2) 67，68，78，76，87，86， 33636
18. (1) 树状图： 列表法：
π1112. 13. 4316
第18(1)题图
x3 ,x＋1,x,3x＋1,,x＋1x＋1
x,
3,x＋13 xxx＋1x33
221(2) P(分式)＝ 19. (1) 设蓝球个数为x个，则由题意得，x＝1.答：蓝球有32＋1＋x2
211个． (2) 如下图，∴两次摸到都是白球的概率＝＝126
第19题图
20. 解：(1)画树形图如下所示：
第20题图
所有出现的结果共有12种．(2) ∵两次抽取的正多边形能构成平面镶嵌的情况有4种：
41AB，AD，BA，DA，∴P(两次抽取的正多边形能构成平面镶嵌)＝. (3) 当正三角形123
和正方形构成平面镶嵌时，则有60p＋90q＝360，即2p＋3q＝12.∵p，q是正整数，∴p＝3，q＝2.当正三角形和正六边形构成平面镶嵌时，则有60p＋120q＝360，即p＋2q＝6.∵p，q
是正整数，∴p＝4，q＝1或p＝2，q＝2.
21.
(1) 列表如下
X＋Y,1,2,3,41,－,3,4,5
2,3,－,5,6
3,4,5,－,7
4,5,6,7,－ (2) 列表如下
X·Y,1,2,3,41,－,2,3,4
2,2,－,6,8
3,3,6,－,12
4,4,8,12,－
214161∴P(y＝－x＋6)＝＝ ∵P(x·y>6)＝＝，P(x·y<6)，∴P(x·y>6)＜P(x·y<6)，126123122
∴这个游戏规则不公平．规则改为：“若x，y满足x·y≥6，则小明胜；若x，y满足x·y<6，则小红胜”，∵P(x·y≥6)＝6161＝，P(x·y<6)＝＝，∴P(x·y≥6)＝P(x·y<6)． 22. (1) 设122122
第一次爸爸买了火腿粽子x只、豆沙粽子y只，根据题意得：整理得：x＋51x＋y＋6＝2，x1，x＋y3y＝2x，x＝4解得： . (2) 在妈妈买过之后，盒中有火腿粽子9只和豆沙粽子9只．从y＝x＋4，y＝8
盒中取出火腿粽子4只、豆沙粽子6只送爷爷和奶奶后，盒中还有火腿粽子5只和豆沙粽子
30153只．最后小亮任取2只，恰有火腿粽子、豆沙粽子各1只的概率是.可能的情况列表5628
如下：(记豆沙粽子a，b，c火腿粽子1，2，3，4，5)
第二次
第一次 ,a,b,c,1,2,3,4,5a,,(a，b),(a，c),(a，1),(a，2),(a，3),(a，4),(a，5)b,(b，a),,(b，c),(b，1),(b，2),(b，3),(b，4),(b，5)
c,(c，a),(c，b),,(c，1),(c，2),(c，3),(c，4),(c，5)
1,(1，a),(1，b),(1，c),,(1，2),(1，3),(1，4),(1，5)
2,(2，a),(2，b),(2，c),(2，1),,(2，3),(2，4),(2，5)
3,(3，a),(3，b),(3，c),(3，1),(3，2),,(3，4),(3，5)
4,(4，a),(4，b),(4，c),(4，1),(4，2),(4，3),,(4，5)
5,(5，a),(5，b),(5，c),(5，1),(5，2),(5，3),(5，4),23. (1) 因为1＋3＋9＋x＋3＋7＋0＋y＋5＋8＋0＝x＋y＋36＝20n(n为正整数)，又因为0≤x≤9，0≤y≤9，所以0≤x＋y≤18，所以36≤x＋y＋36≤54，即36≤20n≤54，所以n＝2，所以x＋y＝4. (2) 因为x＋y＝4，且0≤x≤9，0≤y≤9，所以有① x＝0，y＝4；② x＝1，y＝3；③ x＝2，y＝2；④ x＝3，y＝1；⑤ x＝4，y＝0，这5种情况，因此，一次拨对小陈手机号的概率为0.2.
bbf课时作业优化英语九年级篇六
新课标九年级英语1单元试题(含答案)
Unit 1 How can we become good learner?
一.
B: 1._______________________________?
A: My mother is ill. I have to take care of her.
B: Oh, dear! I am sorry to hear that. 2.___________________?
A: No, thank you. My mother has caught a bad cold. She has a high fever and coughs day and night. 3.__________________. I’d like to be with her.
B: I see.
4. ______________________________?
A: About 5 days.
B: That’s all right. But you must write a written request for leave.
A: Thank you Mr. Green. It’s very kind of you. I will write it at once.
5.____________?
B: Don’t worry about your lessons. I will certainly help you with them when you get back.
1. C。从对话下面的回答“My mother is ill.”可以判断上面的句子是询问“怎么啦”，所以用C比较符合对话的上下情景。
2. A。从对话前后意思理解是用A表示“我能为你做什么”的意思。
3. F。从对话前面的情景“她日日夜夜咳嗽”可以理解是“医生说她需要住院”，所以选择F符合情景。
4. D。从对话下面的回答可以判断是询问离开多久、多长时间的意思。
5. G。从对话下面的回答“你不必要担心你的功课”可以理解上面的句子是用G表示担心自己的功课的意思。
二. 根据汉语意思完成句子。（10分）
1. I don’t think the _____________(教科书) is suitable for the students.
2. Reading more is one of the _____________(秘诀) to learn English well.
3. The students in my class are very ____________(活跃的) in class.
4. Please practice the conversation with your ____________(搭档).
5. I ____________(复习) the new grammar with my son last night.
Ⅱ. 1. textbook 2. secrets 3. active 4. partner 5. reviewed
三. 根据句意，用括号中所给单词的适当形式填空。（10分）
1. My sister has made a lot of ____________(mistake) in her exam paper.
2. You should learn English by ___________ (speak) with your friends.
3. Can you do your homework __________ (quick)? I can not wait any longer.
4. Do you know this word has two _____________ (pronounce)?
5. We find learning English is not so ___________ (easily) as learning Chinese. IV. 根据句意，用括号中所给单词的适当形式填空。
1. mistakes。a lot of的后面用不可数名词或者可数名词的复数形式。
2. speaking。在介词by的后面用doing表示“通过做某事来达到某种目的”的意思。
3. quickly。用副词来修饰行为动词，quick是形容词，它的副词是quickly。
4. pronunciations。这是一个可数名词，在two的后面用它的复数形式。
5. easy。本句子是考查形容词的同级比较，not so„as 表示“和„„不一样”，用形容词原形。
四. 根据汉语意思完成下列句子。（10分）
1. 你锻炼得越多，你就越健康。
_________ _________ you exercise, _________ _________ you’ll be.
2. 老师让我们通过朗读来训练发音。
Our teacher asks us to practice ______________ ______ ________aloud.
3. 鲍勃按时到校是非同寻常的。
It’s unusual for Bob _________ _________ to school on time.
4. 公共汽车上人太多，没有座位可坐了。
There are so many people on the bus that there is no seat _____ ______ ______.
5. 她太累了以至于说不出话。
She was ______ tired ______ say a word.
Ⅰ. 1. The more; the healthier 2. pronunciation by reading 3. to get
4. to sit on 5. too; to
五. 句型转换。（5分）
1. We went for a picnic by ourselves last weekend.
We went for a picnic ______ ______ ______ last weekend.
2. Everyone has the ability to learn when he was born. (改为同义句)
Everyone ______ ______ _______ the ability to learn.
3. Many people don’t know how they can keep healthy. (改为同义句)
Many people don’t know ______ _____ ______ healthy. 对划线部分提问)
______ ______ you practice your listening?
5. You will forget it unless you use it. (改为同义句)
You will forget it ______ you ______ use it.
Ⅱ. 1. on our own 2. is born with 3. how to keep 4. How do 5. if; don’t
五. 单项选择。（20分）
1. Something is wrong with my grandfather’s ears, so please be ______ with him.
A. angry B. strict C. patient D. bored
2. Please read the text ______ so that everyone can hear you.
A. aloud B. loud C. loudly D. aloudly{bbf课时作业优化英语九年级}.
3. Could you please tell me who ______ America?
A. discover B. discovered C. invented D. invent
4. The number of the students in our school ______ so far.