2023年七年级英语暑假作业答案
2023暑假作业答案七年级下册（大全）
2023暑假作业答案七年级下册（大全）暑假就要结束了，各位同学是不是还在为暑假作业头疼呢？如果想要知道答案，就来看看小编为大家带来的内容吧，下面就由小编为大家带来“2023暑假作业答案七年级下册”，仅供参考，希望喜欢。
篇一：2023暑假作业答案七年级下册一、1. change 2. tastes 3. tired 4. hungry 5. exercise 6. seldom7. healthy / healthier 8. vegetables 9. important 10. energy二、1. dancing 2. to cook 13. to be， playing 14. to see 15. feeds 16. bringing 17. to read 18. isn＇t 19. healthy 20. is running三、31-40 BBBAB CBDDD 41-50 BBDAA DCCCB四、51. Eating， isn＇t good for 52. on the Internet 53. sweet snacks any more 54. Good luck with 55. less than五、EAFDB六、61-70 DACCD CCCAD七、CDBC篇二：2023暑假作业答案七年级下册1.（1）眩霍（2）xūnhán（3）排比、拟人，极力铺陈胡杨林金黄的色彩，极富艺术感染力。
2.（1）C（2）B（3）A3.（1）今股传奇（2）无胃不治；（3）别具一革；（4）屋美价廉；（5）一戴添娇；（6）咳不容缓4.阶下囚；老油条；主心骨5.君子动口不动手6.①示例：为了子孙后代，还是多种点植物吧！如果有一天植被都没有了，这个世界就化为乌有了。
②示例：水资源珍贵了，能多省一“点”就应该多省一“点”。
7.妒嫉之心不但会毁灭友谊，还会毁灭自身的美丽。
8.（1）山寺桃花始盛开（2）桃花潭水深千尺（3）桃花一簇开无主（4）竹外桃花三两枝（5）桃花流水鳜鱼肥（6）桃花尽日随流水（7）桃红复含宿雨（8）桃花依旧笑春风9.（1）当下友谊变味了；社会功利化是造成友谊变味的主要原因；功利化的友谊已侵蚀到孩子的心灵。
2024-2025学年冀教版初一英语下册暑假练习试卷及答案
2024-2025学年冀教版初一英语下册暑假练习试卷班级：____________________ 学号：____________________ 姓名：____________________一、听力题（每题3分）1.Conversation:M: Hi, Lily. I’m going to the library to borrow some books. Do you want to go with me? W: Sorry, I can’t. I’m going to meet my cousin at the train station.Question: Where is the woman going?A. To the library.B. To the train station.C. To the bookstore.D. To the museum.Answer: B2.Conversation:W: Tom, could you please help me carry this heavy box to the car?M: Sure, Mom. But where is Dad? He’s usually stronger than me.W: He’s at work. He’ll be home late.Question: Who is not at home?A. Tom’s mom.B. Tom’s dad.C. Tom’s cousin.D. Tom’s friend.Answer: B3.Conversation:M: I’m thinking of buying a new camera. Any suggestions?W: Well, if you’re looking for something affordable, I’d recommend the Canon EOS M50. It’s quite popular.Question: What is the man planning to buy?A. A new phone.B. A new camera.C. A new laptop.D. A new TV.Answer: B4.Conversation:W: John, I’m really hungry. Let’s grab a bite to eat after the meeting.M: Sure, but I’m not sure where we can find a good restaurant nearby.W: Don’t worry. I know a great Italian restaurant that’s just around the corner.Question: What kind of food does the woman want to eat?A. Chinese food.B. Italian food.C. Japanese food.D. Mexican food.Answer: B5.Conversation:M: Excuse me, is this seat taken?W: No, it’s not. You can sit here.M: Thanks. I was afraid I would have to stand all the way to my destination. Question: What was the man worried about?A. Missing his train.B. Standing all the way.C. Losing his luggage.D. Being late for work.Answer: B二、单选题（每题3分）Question 1:Which of the following is NOT a verb in the present continuous tense?A. She is reading a book.B. He reads newspapers every day.C. We are playing football now.D. They are dancing in the room.Answer: BQuestion 2:Which word best completes the sentence: “I_______to the cinema with my friends last night.”A. wentB. goC. will goD. am goingAnswer: AQuestion 3:Which of the following is a possessive adjective?A. myB. mineC. meD. myselfAnswer: AQuestion 4:Choose the correct response to the question: “What are you doing?”A. I’m good.B. I’m a student.C. I’m watching TV.D. I like playing games.Answer: CQuestion 5:Fill in the blank with the correct preposition: “The cat is sitting_______the table.”A. inB. onC. underD. forAnswer: B三、多选题（每题4分）Question 1:Which of the following sentences are correct? (Select all that apply)A. She often plays basketball with her friends.B. They go to school by buses.C. We likes watching movies in the evenings.D. I have an apple, but he don’t have any.E. The cat is sleeping under the table.Answers: A, EQuestion 2:Fill in the blanks with the correct forms of verbs. (Select all that are correct)She_______(study) hard every day. He______(not play) computer games on weekdays. They_______(eat) dinner together last night. We_______(watch) TV after dinner.A. studiesB. doesn’t playC. ateD. watchesE. studiedAnswers: A, B, C, DQuestion 3:Which of the following are prepositions? (Select all that are prepositions)A. onB. bookC. underD. happyE. overAnswers: A, C, EQuestion 4:Identify the sentences that contain subject-verb agreement errors. (Select all that contain errors)A. The students are playing football.B. She have a new dress.C. They don’t like spicy food.D. My brother and I am going to the movies.E. The cat eats fish.Answers: B, DQuestion 5:Choose the sentences that are in the present continuous tense. (Select all that are in present continuous)A. She is singing a song.B. I will go to the park tomorrow.C. They were watching TV last night.D. We are studying for the exam.E. He reads a book every day.Answers: A, D四、阅读理解（每题4分）Title: The Power of ReadingReading is a powerful tool that can open up a world of knowledge and imagination. It not only helps us learn new facts and ideas, but also stimulates our creativity and critical thinking skills. In today’s fast-paced world, where technology is constantly evolving, the importance of reading cannot be overstated.One of the key benefits of reading is that it allows us to explore a wide range of topics and cultures. By picking up a book from a different genre or about a faraway place, we can gain insights into people’s lives and experiences that we might not otherwise encounter. This broadens our horizons and helps us become more understanding and tolerant of others.Furthermore, reading improves our vocabulary and grammar, which are essential for effective communication. As we read, we encounter new words and phrases that we can incorporate into our own speech and writing. This enriches our language and makes us better equipped to express our ideas clearly.Lastly, reading fosters a sense of calm and relaxation. In a world filled with distractions and noise, picking up a book and escaping into a different world can be a welcome respite. It gives us a chance to unwind, reflect, and recharge our batteries.Questions:1.What is the main idea of the passage? (4 points)A. The importance of reading.B. The benefits of technology.C. The different types of books.D. The history of reading.2.What is NOT mentioned as a benefit of reading? (4 points)A. Improving vocabulary.B. Exploring different cultures.C. Developing leadership skills.D. Fostering a sense of calm.3.According to the passage, why is reading important in today’s world? (4 points)A. It helps us keep up with technology.B. It provides us with entertainment.C. It broadens our horizons and understanding.D. It improves our mathematical skills.4.Which of the following is TRUE according to the passage? (4 points)A. Reading only helps us learn facts.B. Reading does not improve our grammar.C. Reading can be distracting.D. Reading helps us escape from reality.5.What does the passage suggest about reading? (4 points)A. It should be avoided in today’s world.B. It is not as important as it once was.C. It is a valuable skill that should be cultivated.D. It is only beneficial for children.Answers:1. A. The main idea of the passage is the importance of reading.2. C. The passage does not mention developing leadership skills as a benefit of reading.3. C. According to the passage, reading is important in today’s world because itbroadens our horizons and understanding.4. D. The passage suggests that reading helps us escape from reality by entering adifferent world.5. C. The passage suggests that reading is a valuable skill that should be cultivated.五、作文（30分）Title: “My Summer Vacation Plan”Directions: Write a short essay about your summer vacation plan. You should include the activities you plan to do, the places you hope to visit, and the reasons for your choices. (At least 80 words)Example:My Summer Vacation PlanSummer vacation is just around the corner, and I am excited about all the plans I have made. Firstly, I intend to visit my grandparents in the countryside, where I can enjoy the peace and tranquility of nature. Secondly, I plan to take a trip to the beach with my family, where we can relax and have fun in the sun and surf. Additionally, I have also enrolled in an English language camp to improve my language skills and meet new friends. Lastly, I will dedicate some time to reading books and catching up on my hobbies, such as painting and music. Overall, I am looking forward to a fun and enriching summer vacation.Note: The example essay is a suggested model for students to follow. They can modify it to fit their own plans and personal experiences.。
七年级英语暑假作业答案
七年级英语暑假作业答案2023年七年级英语暑假作业答案最新答案解析Ⅰ.答案:1.dances2.speak3.write4.club5.swimsⅡ.答案:1.tojoin2.draw3.telling4.play5.sportsⅢ.答案:1～5.CBACCⅣ.答案:1.Can;sing2.can’tfind3.Whatcan;do4.show;to5.Can;orⅤ.答案:1.Shecandanceverywell2.Tomcanplaybasketball3.LiYuewantstojointheping-pongclub4.Mikelikesplayingsoccer5.CanJamesdrawpictureswellⅥ.答案:1.TheyarefromAmerica.2.ShecandrawandplayChinesechess.3.CanhedoChinesekungfu?4.他们经常和朋友们一起弹吉他。
5.Buthecan’tspeakChinese.分析：把第二个方程整理得到y=3x5，然后代入第一个方程求出x的值，再反代入求出y的值，即可得解.③代入①得，2x+3(3x5)=7解得x=2把x=2代入③得，y=65=1所以，方程组的解是 .点评：本题考查了代入消元法解二元一次方程组，从两个方程中的一个方程整理得到y=kx+b的形式的方程是解题的关键.分析：根据x的系数相同，利用加减消元法求解即可.解得y=3把y=3代入①得，4x+7×(3)=19解得x=所以，方程组的解是 .点评：本题考查了利用加减消元法解二元一次方程组，解题的关键在于找出或构造系数相同或互为相反数的未知数.分析：利用不等式的基本性质，首先去分母，然后移项、合并同类项、系数化成1，即可求得原不等式的解集.即x≤8.点评：本题考查了解简单不等式的能力，解答这类题学生往往在解题时不注意移项要改变符号这一点而出错.解不等式要依据不等式的基本性质：(1)不等式的两边同时加上或减去同一个数或整式不等号的方向不变;(2)不等式的两边同时乘以或除以同一个正数不等号的`方向不变;(3)不等式的两边同时乘以或除以同一个负数不等号的方向改变.16.(5分)解不等式组，并求其整解数并将解集在数轴上表示出来.考点：解一元一次不等式组;在数轴上表示不等式的解集;一元一次不等式组的整数解.分析：分别求出各不等式的解集，再求出其公共解集，再其公共解集内找出符合条件的x的整数解即可.解答：解：，由①得，x点评：本题考查的是解一元一次不等式组，熟知实心圆点与空心圆点的区别是解答此题的关键.17.(5分)若方程组的解x与y相等，求k的值.分析：由y=x，代入方程组求出x与k的值即可.则k的值为10.A.贮（zhù）蓄澄（chéng）澈滑稽(jì) 钦（qīn）差大臣B.蜷(juǎn) 伏着(zhuó)落中（zhōng）伤骇（hài）人听闻C.抽噎(yē) 嗔(chēn) 怪庇(bì) 护狼奔豕(shǐ)突D.分歧(qǐ) 重荷(hè) 踟躇(chú) 刨（páo）根问底B.消法修正案将网络消费者有权自收到商品之日起七日内退货等条款纳入其中，市民们对此纷纷随声附和表示赞成。
2023初一下册英语暑假作业答案
2023初一下册英语暑假作业答案一、单项选择1.B2.A3.C4.D5.C二、完形填空1.C2.A3.B4.D5.C三、阅读理解1.D2.B3.A4.C5.D四、单词填空1.happy2.bus3.interesting4.doctor5.music五、补全对话1.A: What’s your favorite subject?B: My favorite subject is English. How about you?A: I like math. It’s challenging but fun.2.A: Do you have any brothers or sisters?B: Yes, I have a younger sister. How about you?A: I have an older brother and a younger brother.3.A: What do you usually do on weekends?B: I often play tennis with my friends. How about you?A: I usually go shopping or watch movies with my family.六、简答题1.请简要写出一个你喜欢的动物及原因。
我喜欢狗。
因为它们忠诚可爱，是人类最好的朋友。
狗能陪伴我们，保护我们，给予我们无条件的爱和关心。
2.描述一下你的家乡。
我的家乡是一个小山村，环境优美，空气清新。
村子周围有绿树和田野，还有一条清澈的小河流经村子。
人们大多以农业为生，种植水稻、果树和蔬菜。
村子里有一所小学和一所小医院，生活相对简单但和谐。
七、创作题请以。
2023快乐暑假七年级英语部分原题
2023快乐暑假七年级英语部分原题一、阅读理解阅读下面短文，根据短文内容判断句子正误。
正确的写“T”，错误的写“F”。
For many people in the United States, Thanksgiving is one of the most important holidays. It’s a day when families and friendse together to give thanks for what they have. The holiday is always on the fourth Thursday in November.Thanksgiving was first celebrated by the Pilgrims in 1621. The Pilgrims had a big dinner to thank the Native Americans for teaching them how to grow food. The tradition of the Thanksgiving dinner has continued for almost 400 years.The most famous symbol of Thanksgiving is the turkey. The Pilgrims probably ate turkey at that first Thanksgiving dinner, and today people still eat turkey on this day. Other traditional foods include mashed potatoes, sweet potatoes, and pumpkin pie.In the United States, many people have a four-day weekend for Thanksgiving. On Thursday, they eat a big meal with their families. On Friday, many people go shopping for the Christmas season. This day is called Black Friday.1. Thanksgiving is not an important holiday for many people in the United States. ( )2. Thanksgiving is always on the last Thursday in November. ( )3. Thanksgiving was first celebrated in 1621. ( )4. The most famous symbol of Thanksgiving is the chicken. ( )5. Black Friday is a day for shopping before Thanksgiving. ( )答案：1. F 2. F 3. T 4. F 5. F二、单项选择从下列选项中选择最佳答案。
七年级暑假作业答案2023英语
七年级暑假作业答案2023英语1.七年级暑假作业答案2023英语篇一Units 1-2I. 1-5 CBACC 6-10 BAADB 11-15 AAACD 16-20 ABCCCII.1. forgets 2. member 3. support 4. smell 5. patient 6. finish 7. lift 8. cheerful 9. address 10. perfectⅢ. 1. hard-working 2. care 3. laugh 4. remain 5. strict 6. French 7. wine 8. Europe 9. Tower 10. coastⅣ. 1. patience 2. careful 3. success 4. French 5. skiing 6. lying 7. reading 8. stairs 9. receiver10. impossible11. probably 12. support 13. successful 14. cheerful 15. misses 16. France 17. European 18. reading 19. greetings 20. jokesⅤ. 1. telling jokes 2. is strict about 3. give up 4. to stare at 5. by the sea 6. is famous for 7. at least 8. go shopping 9. preferred to 10. Western EuropeⅥ. 1. takes time to help 2. is the time for 3. the perfect placefor 4. Why not go on 5. hope to study 6. what do; think of 7. istrying swimming 8. tried to save 9. what; looks like 10. plan to go to 11. not only singing but also dancing 12. is the capital of2.七年级暑假作业答案2023英语篇二Units 3-4I.根据句意及首字母提示填写单词，使句子完整、通顺。
初一暑假作业英语答案【人教版】】_暑假作业英语答案大全七年级整理
初一暑假作业英语答案【人教版】】_暑假作业英语答案大全七年级整理暑假即将结束，作业做得怎么样?作业做完后需要核对的伙伴有福利了，今日我整理了2023初一暑假作业英语答案【人教版】，大家一起来看看吧!2023初一暑假作业英语答案1一、选择填空1-5 BCDDA 6-10 BBDDA 11-15 DCCDC二、完形填空1-5 CBCDA 6-10 BDBAD三、阅读理解ACCBD四、填词1.pollution2. strange3. Appeared4. geography5. dangerous6. frightened7.Scientists 8. twentieth 9.towards 10.practises 11.None12.northwest五、动词填空1. is knocking2.bought3.to learn4.goes5. playing6. Dont forget ,第1页/共44页to take 7. doesnt rain 8.Listening 9. will begin六句型转换1.Whats, weight of2.couldnt see anything 3,Each of , has 4. Dont take 5. Which book 6. How long 7. Different from 8. What did, do 9. What a tall building it is !./ How tall the building is !10 I was excited to see so many amazing things.11 Is it necessary to walk the dog once a day?七、翻译（句子）1.Look! How happily the children are playing!2.Thank you for recommending such an interesting film to me.3.Its bad for your health to go to school without having breakfast.4.Do you know what happened to him last week?5.The teacher told the children to keep away frem danger.八. （作文）Dear Mr. Wu ,I would like to recommend Sandy for this years Best Animal Lover Award.第2页/共44页Sandy is a kind and helpful student. She often helps others.Sandy also likes animals very much. She often reads articles about animals and watches TV programmes about them She is amember of the school Animal Lover Club. She does a lot of work for the club.One day, Sandy took a homeless dog to her home. She gave the dog something nice to eat. She brushed its fur to make it clean. Then , she took the dog for a walk in the park.I think Sandy should get the award . If she can get it , Ill be very happy.I look forward to hearing from you soon.(二)一单词辩音ABABB二、单选题AADCB DAACC CBDDA三完型填空31-35 BDACA 36-40 ACBBC四单词填空1. thousand2.loaves3.fifty-first4. until5. preparin6.neighbours’,7.bookcases/bookshelves8. local9. pollution 10.None五.动词填空1.is lying2.look3.likes4.not to play5. to worry第3页/共44页六BDBBDAC七句子翻译1. Teaching the parrot to say “thank you” is not difficult.2. He uses the blanket to put out a fire, he saved this 79 year-old people.3. This idea sounds funny!4. Nobody knows what happened to her yesterday.5. We went home until the snow stopped then.八书面表达Suzhou is an old and beautiful city. There is less air pollution here ,the air is very fresh /good.There are also a lot of pretty gardens in Suhzou.many visitors come here every year.Suhzou is very clost to Shanghai. It only takes an hour to get to shanghai by bus/car..If you visit Suhzou , you can buy lots of nice silk scarves,taste Suzhou delicious snacks.Welcome to suzhou ! It is a really wonderful city!第4页/共44页(三)—、1.anybody 2.noise 3.weather 4.quietly 5.catches 6.chance7.planning 8.throw 9.pets 10.sign二、1.will/is going to be 2.is talking 3.went 4.was 5.don’t sell6.receiving7.swimming8.Don’t be9.called 10.brush三、1.D 2.A 3.D 4.A 5.C 6.A 7.B 8.B 9.B 10.C 11.B 12.B四、1.Most of the time.I enjoy staying/being at home alone.2.1isten!Someone is ringing the door bell.3.If you want to keep fit.make sure you do some exercise every day.4.I’m very interested in watching NBA games.5.Dogs are our best friends.we shouldn’t be afraid of them.五、1.A 2.B 3.C 4.B 5.D 6.B 7.C 8.A 9.D 10.C六、(A)1.D 2.B 3.C 4.A 5.C(B)1.B 2.D 3.C 4.A 5.B七、My Good FriendI have a good friend.She is a Chinese girl of 14.Her name is Zhang Jie.She studies in No.5 Middle School.She is good at English，Chinese第5页/共44页and Maths.She can sing and play basketball quite well.She likes watching TV，too.She is very kind and friendly.She is always ready to help others.What a good girl!(四)一、1～5. BDACC 6～10. CDAAA 11～15. DBACC二、1～5. ACADC 6～10. CBCBA三、1～5. CBAAD 6～10. BCDBA 11～15、BDCBD四、1. wonderful 2. strange 3. surprised 4. memory . 5. through2023初一暑假作业英语答案2【一】(基础训练)第一题1.D2.H3.E4.F5.I6.A7.J8.C9.B10.G第四题.1.B2.C3.A4.D5.B6.C7.B8.D9.C10.C【二】(力量提高)其次题1.tolive2.sitting3.friendly4.isputting5.teachers6.countries7.mine8.togrow【三】一、SHEFIAJCBG第6页/共44页二、1、friendly2、lying3、twelfth4、twenty5、countries6、dogs7、has8、child9、wooden10、busy三、1、my favourite place2、more than ten rooms3、share a bedroom with Amy4、live on the fifth floor5、cant wait to do...第7页/共44页6、与……不同7、在同一时间8、至少9、长的飞机旅行10、烧饭四、BDADBCBDCC五、speak toWhosfromstudycall numbertell六、第8页/共44页1、about2、of3、with4、near5、near6、to7、After8、to【四】五，dbcbddccdb六，way ok along on drive how take by and 七，1，drives car to factory2，im afaid3,trying to4,shall take5,going to hold第9页/共44页6,straight see bright7,the way to8,going to rain take umbrella9,who shall invite10,are looking forward to visiting 【五】二，badabdabbc三，1,robbers2,are planning3,turning4,seeing5,foreighers6,cheapest7,surprised8,will do第10页/共44页9,raing10,doesnt eat四，to way go along pass go by find you right五，1，favourite football player above2,straight on until traffic lights3,surprised there wrong with work4,wait to run towards5,failed in6,later more fine art7,will take to8,choose any like2023初一暑假作业英语答案3一、1～5.BDACC6～10.CDAAA11～15.DBACC二、1～5.ACADC6～10.CBCBA三、1～5.CBAAD6～10.BCDBA11～15.BDCBD四、1.wonderful2.strange3.surprised4.memory.5.through第11页/共44页6.dangerous7.luckily8.past9.brave10.members五、1.Youcangetbettergradesifyoutryyourbest.2.Mybrotherspentaweekteachingmehowtoplaytheguitar.3.Weshouldlearnfromthehard-workingstudents.4.Wemustarriveatthetrainstationbefore8.00tomorrowmorning.5.Dontbeafraidofthedog.Itneverbites.单选题DCACBACDBABCBAD完形填空1.D2.B3.A4.B5。
七年级下学期英语暑假作业答案2023
七年级下学期英语暑假作业答案2023七年级下学期英语暑假作业答案2023【一】 P411.常见标志A 停车位平安出口肯德基小心路滑B No parking No smokingNo photos dustbinC No foodNo music2.广告英语1.可口可乐2.苹果(手机、电脑等)3.Just do it. (只管去做。
)——耐克运动鞋4.Focus on life. (瞄准生活。
)——奥林巴斯相机。
5.飘柔。
广告英语的语言特点简单，明了。
3.动物与英语爱屋及乌。
2.I wanted mother’给妈妈的礼物我本想保密，但妹妹却露出了马脚面临驾驶考试，他急得像热锅上的蚂蚁。
4.一石两鸟。
5.非常宁静。
7.披着羊皮的狼;面善心恶。
8.丑小鸭变成了白天鹅。
p441. There were not so many roads there were manyold houses and it was dirty and poor.There was no supermarket before and therewere not so much entertai____ent equipment in the square.2. There are many trees and flowers in my countryside.There are established many supermarkets in my hometown.3. There will be many tall buildings in my hometown.4. I love my hometownMy hometown is a beautiful place. But in the old days it was a poor and backward little town. Many people had no work. They lived a hard life. In 1949 my hometown was liberated. Since then great changes have taken place there. The streets have been widened. Thelife of the people is greatly improved. I love my hometown. All the more I love its people. They are working hard so as to make it still richer and more beautiful.P461. Family2.,其构造是：3.working buying visiting规律：直接加ingtaking having driving规律：去e加ingstopping shopping getting规律：双写辅音字母，再加ingLying规律：变ie为y，再加ing4.否认句 The boy is not playing basketball.一般疑问句 Is the boy playing basketball?肯定答复 Yes，he is.否认答复 No，he isn’t.对The boy 提问 Who is playing basketball?What is the boy doing?(2)She is opening the window.Who is cleaning the window?She isn’t closeing the door now.I ’m doing my homework.They are singing under the tree now.What are the Young Pioneers doing?is swimmingWhere are the visitors swimming?5.No.5 is having/taking a shower.6. 夏天的飞鸟，飞到我的窗前唱歌，又飞去了。
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2023年七年级英语暑假作业答案
2023年七年级英语暑假作业答案
暑假到了，同学们抓紧做暑假作业做完再好好玩耍吧，下面是整理的关于2023年七年级英语暑假作业答案，欢迎阅读!
一 helicopter abacus ferry ambulance handcuffs purse cycling trainer astronaut
二 one hundred and fifty-eight
two thousand and one
fourty-five percent
zero point twenty-five
six point zero three
sixty degree
six point fifty-nine
one thousand five hundred and seventy-one
one/sixth
three/fifth
P43页
一 play football wash his face play the violin make phone calls to sb. arguing fishing
二 (1)1,000、120、852 (2)15、79、17、27、2,005 (3) 3/10、3/5、3/7、7/9 (4) 50%、75% (5)25、160
(5)0.78、11.45、21.13、57.22、6.5
七年级数学暑假作业答案
13.(5分)用代入法解方程组： .
考点：解二元一次方程组.
分析：把其次个方程整理得到y=3x﹣5，然后代入第一个方程求出x的值，再反代入求出y的值，即可得解.
解答：解：，
由②得，y=3x﹣5③，
③代入①得，2x+3(3x﹣5)=7，
解得x=2，
把x=2代入③得，y=6﹣5=1，
所以，方程组的解是 .
点评：本题考查了代入消元法解二元一次方程组，从两个方程中的一个方程整理得到y=kx+b的形式的方程是解题的关键.
14.(5分)用加减消元法解方程组： .
考点：解二元一次方程组.
专题：计算题.
分析：依据x的系数相同，利用加减消元法求解即可.
解答：解：，
①﹣②得，12y=﹣36，
解得y=﹣3，
把y=﹣3代入①得，4x+7(﹣3)=﹣19，
解得x= ，
所以，方程组的解是 .
点评：本题考查了利用加减消元法解二元一次方程组，解题的关键在于找出或构造系数相同或互为相反数的未知数.
15.(5分)解不等式： .
考点：解一元一次不等式.
分析：利用不等式的基本性质，首先去分母，然后移项、合并
同类项、系数化成1，即可求得原不等式的解集.
解答：解：去分母，得：3(2+x)2(2x﹣1)
去括号，得：6+3x4x﹣2，
移项，得：3x﹣4x﹣2﹣6，
则﹣x﹣8，
即x8.
点评：本题考查了解简洁不等式的力量，解答这类题同学往往
在解题时不留意移项要转变符号这一点而出错.
解不等式要依据不等式的基本性质：
(1)不等式的两边同时加上或减去同一个数或整式不等号的方向
不变;
(2)不等式的两边同时乘以或除以同一个正数不等号的方向不变;
(3)不等式的两边同时乘以或除以同一个负数不等号的方向转变.
16.(5分)解不等式组，并求其整解数并将解集在数轴上表示出来.
考点：解一元一次不等式组;在数轴上表示不等式的解集;一元
一次不等式组的整数解.
分析：分别求出各不等式的解集，再求出其公共解集，再其公
共解集内找出符合条件的x的整数解即可.
解答：解：，由①得，x1，由②得，x﹣2，
故此不等式组的解集为：﹣2x1，在数轴上表示为：
故此不等式组的整数解为：﹣2，﹣1，0.
点评：本题考查的是解一元一次不等式组，熟知实心圆点与空心圆点的区分是解答此题的关键.
17.(5分)若方程组的解x与y相等，求k的值.
考点：二元一次方程组的解.
专题：计算题.
分析：由y=x，代入方程组求出x与k的值即可.
解答：解：由题意得：y=x，
代入方程组得：，
解得：x= ，k=10，
则k的值为10.
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