英文习题练习
英文习题练习完整版.ppt
monopolist price discriminates?
(b) If the monopolist is not able to price discriminate, what common price does it charge?
b. the law of demand predicts downward pressure on the price of the good from its current level.
c. we say that there is a scarcity of 100 units of the good.
Exercises
1
1. Suppose Bart, Benjamin, and Brent each purchase a particular type of electric pencil sharpener at a price of $20. Bart’s willingness to pay was $22, Benjamin's willingness to pay was $25, and Brent's willingness to pay was $30. Which of the following statements is correct?
4
5. National defense（国防） is provided by the government because
a. it is impossible for private markets to produce public goods.
英语全套练习题
英语全套练习题Introduction:English is a widely spoken language around the world, and having a strong command of it is essential for effective communication in various personal and professional settings. To master the language, it is crucial to engage in comprehensive practice. In this article, we will explore a full range of exercises that cover different aspects of English language skills, including listening, speaking, reading, and writing. These exercises aim to enhance your overall English proficiency and ensure a well-rounded language learning experience.Listening Exercises:1. Dictation:- Listen to a recording and write down what you hear. Replay the recording to check your accuracy and improve any mistakes.- Use online resources or language learning apps that offer dictation exercises, where you can choose recordings based on your language level and interests.2. Listening Comprehension:- Listen to conversations, news reports, or podcasts in English. Summarize what you have heard and answer questions related to the content.- Utilize English language learning websites, which provide a wide range of listening exercises at different difficulty levels.Speaking Exercises:1. Role-Playing:- Engage in simulated conversations with a partner or a language exchange partner. Take turns playing different roles in various scenarios, such as ordering food in a restaurant or discussing a recent movie.- Practice pronunciation, intonation, and fluency by recording your conversations and listening to them. Identify areas for improvement and work on them.2. Debate and Discussion:- Choose a topic of interest and engage in debates or discussions with others. This exercise not only improves your speaking skills but also enhances critical thinking and the ability to express opinions effectively.- Join English conversation groups or participate in online forums to interact with a diverse range of English speakers.Reading Exercises:1. Comprehension:- Read English articles, newspapers, or books. After reading, summarize the main points, identify supporting details, and answer questions about the text.- Utilize online resources that provide reading materials along with comprehension questions.2. Vocabulary Expansion:- Read extensively in English to expose yourself to various words and expressions. Use context clues to infer the meanings of unfamiliar words.- Keep a vocabulary journal to record new words, their definitions, and example sentences. Review and practice using these words regularly.Writing Exercises:1. Essay Writing:- Choose a topic and write an essay in English. Focus on structuring your essay with an introduction, body paragraphs, and a conclusion. Pay attention to grammar, vocabulary, and coherence.- Seek feedback from proficient English speakers or language teachers to improve your writing skills.2. Creative Writing:- Practice creative writing by crafting stories, poems, or journal entries in English. Experiment with different genres and styles to make writing more engaging and enjoyable.- Join writing communities or workshops to receive feedback and suggestions from fellow writers.Conclusion:To achieve fluency in English, it is essential to engage in a comprehensive and well-rounded practice. By incorporating listening exercises, speaking activities, reading comprehension tasks, and writing practice into your language learning routine, you can significantly enhance your English language skills. Remember to set realistic goals andconsistently devote time and effort to these exercises. Embrace every opportunity to practice English, and you will make significant progress on your language learning journey.。
练习题(打印版)英文
练习题（打印版）英文### Practice Questions (Printable Edition)Section A: Vocabulary1. Choose the correct word to fill in the blank:- The weather was extremely harsh / haste, making it difficult for the hikers to continue their journey.- The diplomat / diploma played a crucial role in resolving the international conflict.2. Match the following words with their definitions:- Eloquent: a. A person who is not very careful- Imprudent: b. Expressing or done in an expressive and effective way- Voracious: c. Having or showing great enthusiasm for reading- Avid: d. Consuming large amounts of something quickly and eagerly3. Rewrite the following sentences using synonyms:- The innovative approach was widely praised.- The frugal lifestyle helped her save a significant amount of money.Section B: Grammar1. Fill in the blanks with the correct form of the verb inparentheses:- She has been studying (study) English for three years now.- The children were playing (play) in the park when it started to rain.2. Choose the correct sentence:- A. I would have gone to the party if I had known about it.- B. I would go to the party if I knew about it.3. Identify the errors in the following sentence and provide the correct version:- "She don't like to travel by plane because it's too much noise."Section C: Reading ComprehensionRead the passage below and answer the questions that follow:Passage:In the heart of the city, there stands a magnificent library that has been a sanctuary for book lovers for over a century. The library's collection spans various genres, from classic literature to modern science fiction, catering to the diverse tastes of its visitors. It also hosts regular events such as book signings and author talks, fostering a vibrant community of readers and writers.Questions:1. What is the main purpose of the library mentioned in thepassage?2. How does the library cater to its visitors?3. What types of events does the library host?Section D: WritingWrite a short essay (100-150 words) on the topic: "The Importance of Preserving Cultural Heritage."Answer Key:Section A: Vocabulary1. harsh, diplomat2. a. b, b. a, c. d, d. c3. The original approach was widely praised.- The economical lifestyle helped her save a significant amount of money.Section B: Grammar1. has been studying, were playing2. A3. She doesn't like to travel by plane because it's too noisy.Section C: Reading Comprehension1. The main purpose of the library is to serve as a sanctuary for book lovers.2. The library caters to its visitors by having a collection that spans various genres.3. The library hosts events such as book signings and authortalks.Section D: Writing(Sample essay not provided as it requires original content creation beyond the scope of this task.)。
英文习题练习
Solution: (a)
EpA=dqA/dpA=4 EpB=dqB/dpB=3 So, the EpA is greater than EpB, then, group B pays the higher price if the monopolist price discriminates. (b) The total demand function of the monopolist is qm = qA + qB = (100−4p)+ (60−3 p)=160-7p . The marginal revenue is MR=dTR/dp=160-14p; The marginal cost is $10, For seeking maximizing profit, it should make MR=MC, 160-14p = 10, P=150/14 So, the common price it charges is 150/14, the monopolist is not able to price discriminate.
Exercises
1. Suppose Bart, Benjamin, and Brent each purchase a particular type of electric pencil sharpener at a price of $20. Bart’s willingness to pay was $22, Benjamin's willingness to pay was $25, and Brent's willingness to pay was $30. Which of the following statements is correct? a. Had the price of the pencil sharpener been $26 rather than $20, only Brent would have been a buyer. b. Brent’s consumer surplus is the smallest of the three individual consumer surpluses. c. For the three individuals together, consumer surplus amounts to $60. d. The fact that all three individuals paid $20 for the same type of pencil sharpener indicates that each one placed the same value on that pencil sharpener.
练习题答案英文
练习题答案英文一、选择题1. Which of the following is not a fruit?a) Appleb) Bananac) Carrotd) OrangeAnswer: c) Carrot2. The capital of France is:a) Berlinb) Londonc) Parisd) RomeAnswer: c) Paris3. What is the chemical symbol for water?a) H2Ob) CO2c) O2d) N2Answer: a) H2O二、填空题4. The largest mammal in the world is the _______.Answer: Blue Whale5. The process by which plants convert light energy intochemical energy is called _______.Answer: Photosynthesis6. The formula for calculating the area of a circle is_______.Answer: πr²三、简答题7. What are the four seasons?Answer: Spring, Summer, Autumn, and Winter.8. Explain the term "biodiversity."Answer: Biodiversity refers to the variety of life on Earth, including the variety within species, between species, and of ecosystems.9. What is the significance of the Magna Carta?Answer: The Magna Carta is significant as it is one of the first documents to establish the principle that the king was not above the law and that justice should be accessible to all.四、翻译题10. 请将以下句子翻译成英文：“教育是社会进步和个人发展的关键。
一般现在时的英文练习题
一般现在时的英文练习题一般现在时是英语中最常用的时态之一，表示经常、习惯性或普遍的动作、事实或状态。
下面是一些关于一般现在时的英文练习题及其参考内容。
练习题1：用所给动词的适当形式填空。
1. He usually ____(go) to the gym in the morning.2. I always ____(drink) a cup of coffee in the morning.3. She ____(watch) TV every evening.4. They ______(play) soccer on weekends.5. We _______(not like) spicy food.参考内容1：1. goes2. drink3. watches4. play5. don't like练习题2：选择正确的选项填空。
1. Sarah ______ (plays/play) the piano every day.2. My father ________ (work/works) in a bank.3. They ________ (live/lives) in Tokyo.4. The sun _______ (rises/rise) in the east.5. We often ________ (go/goes) to the park on Sundays.参考内容2：1. plays2. works3. live4. rises5. go练习题3：改写下列句子，用一般现在时表达。
1. She is reading a book now.（变为一般现在时）2. They are studying for the exam.（变为一般现在时）3. He is watching a movie at the moment.（变为一般现在时）4. I am writing an email to my friend.（变为一般现在时）5. We are eating dinner.（变为一般现在时）参考内容3：1. She reads a book.2. They study for the exam.3. He watches a movie.4. I write an email to my friend.5. We eat dinner.练习题4：根据提供的信息，用一般现在时写出完整的句子。
小学英语练习题集,包含答案,50题,日期专项
小学英语练习题集，包含答案，50题，日期专项小学英语练习题集（日期专项）题1：写出以下日期的英文表示方式。
中文 | 英文--- | ---1月1日 |2月15日 |3月29日 |4月30日 |5月10日 |答案中文 | 英文--- | ---1月1日 | January 1st2月15日 | February 15th3月29日 | March 29th4月30日 | April 30th5月10日 | May 10th---题2：选出正确的日期表示方式。
A. March 23rdB. March 23rdC. March 23rdD. March 23rd1. March 23rd2. March 23rd3. March 23rd4. March 23rd答案1. A---题3：用英文回答，今天是几月几号？中文 | 英文--- | ---今天是1月5日 |今天是2月10日 |今天是3月15日 |今天是4月20日 |今天是5月25日 |答案中文 | 英文--- | ---今天是1月5日 | Today is January 5th.今天是2月10日 | Today is February 10th.今天是3月15日 | Today is March 15th.今天是4月20日 | Today is April 20th.今天是5月25日 | Today is May 25th.---题4：写出以下日期的英文表示方式。
中文 | 英文--- | ---10月31日 |11月15日 |12月25日 |9月30日 |8月10日 |答案中文 | 英文--- | ---10月31日 | October 31st11月15日 | November 15th12月25日 | December 25th9月30日 | September 30th8月10日 | August 10th---题5：选出正确的日期表示方式。
小学四年级英文练习题
小学四年级英文练习题一、选择题1. What is the capital city of China?A. BeijingB. ShanghaiC. Guangzhou2. How many days are there in a week?A. 6B. 7C. 83. Which month comes after October?A. NovemberB. DecemberC. September4. The opposite of "hot" is ___________.A. coldB. warmC. cool5. How do you say "hello" in English?A. Thank youB. GoodbyeC. Hello二、填空题1. I ____ going to the park tomorrow.2. My sister _____ a book every day.3. _______ is your favorite color?4. There are _____ students in my class.5. We _____ lunch at 12 o'clock.三、配对题Match the words with their meanings.1. Dog A. A place where you can buy things.2. School B. A round fruit that is red or green.3. Supermarket C. A pet that barks and wags its tail.4. Apple D. A place where you study and learn.5. Book E. An object with pages that you read.四、阅读理解Read the passage and answer the questions.My name is Sara. I am eight years old. I live in London with my parents and my little sister, Emma. I go to a primary school near my house. I love learning English and Math. My favorite subject is Science. In my free time, I like to read books and play with my friends. My mom is a teacher and my dad works in a bank.1. How old is Sara?2. What is Sara's favorite subject?3. What does Sara like to do in her free time?4. What does Sara's dad do?5. Where does Sara live?五、写作题Write a short paragraph about your favorite hobby or activity. Include what you like to do, why you enjoy it, and any special memories you have related to that hobby.答案：一、选择题1. A2. B3. A4. A5. C二、填空题1. am2. reads3. What4. twelve5. have三、配对题1. C2. D3. A4. B5. E四、阅读理解1. Sara is eight years old.2. Sara's favorite subject is Science.3. In her free time, Sara likes to read books and play with her friends.4. Sara's dad works in a bank.5. Sara lives in London.五、写作题My favorite hobby is drawing. I enjoy drawing because it allows me to be creative and express myself. When I draw, I feel relaxed and happy. I like to use different colors and create beautiful pictures. One special memory I have is when I won a drawing competition at school. It was a proud moment for me and it made me love drawing even more. I hope to continue improving my drawing skills in the future.。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
b. Brent’s consumer surplus is the smallest of the three individual consumer surpluses.
a. increase the supply of education.
b. decrease the supply of education.
c. increase the demand for education. d. decrease the demand for education.
5. National defense（国防） is provided by the government because
a. $5 and 50 b. $5 and 100 c. $10 and 50 d. $10 and 100
8. Let the demand and supply for a good be given by
qd = 1600−38p qs = 2 p + 400 What is the equilibrium quantity and price? Solution：
a. the law of supply predicts(预报） upward pressure on the price of the good from its current level.
b. the law of demand predicts downward pressure on the price of the good from its current level.
qd = qs 1600−38p = 2p + 400
Solve it, p = 30, qd = qs = 2p + 400 =460 So, the equilibrium quantity is 460, and the
equilibrium price is 30.
9. A monopolist has a unit production cost of $10. The firm has identified two distinct groups of customers. Group A has a demand curve of qA = 100−4pA , while group B has a demand curve of q B = 60−3 pB .
d. public goods increase government revenues.
6. Average total cost is very high when a small amount of output is produced because
a. average variable cost is high. b. average fixed cost is high. c. marginal cost is high. d. marginal product is high.
Solution:
(a)
EpA=dqA/dpA=4
EpB=dqB/dpB=3
So, the EpA is greater than EpB, then, group B pays the higher price if the monopolist price discriminates.
(b) The total demand function of the monopolist is qm = qA + qB = (100−4p)+ (60−3 p)=160-7p . The marginal revenue is MR=dTR/dp=160-14p; The marginal cost is $10, For seeking maximizing profit, it should make
a. it is impossible for private markets to produce public goods.
b. products provided by the government are produced more efficiently.
c. free-riders make it difficult for private markets to supply the socially optimal quantity.
MR=MC, 160-14p = 10, P=150/14
So, the common price it charges is 150/14, the
7. Suppose a firm in a competitive market received $1,000 in total revenue and had a marginal revenue of $10 for the last unit produced and sold. What is the average revenue per unit, and how many units were sold?
(a) Which group pays the higher price if the monopolist price discriminates?
(b) If the monopolist is not able to price discriminate, what common price does it charge?
2. If the quantity supplied is the same regardless of price, then supply is
a. elastic. b. perfectly elastic. c. perfectly inelastic. d. inelastic.
3. When there is a shortage of 100 units of a particular good,
Exercises
1. Suppose Bart, Benjamin, and Brent each purchase a particular type of electric pencil sharpener at a price of $20. Bart’s willingness to pay was $22, Benjamin's willingness to pay was $25, and Brent's willingness to pay was $30. Which of the following statements is correct?
c. For the three individuals together, consumer surplus amounts to $60.
d. The fact that all thrhe same type of pencil sharpener indicates that each one placed the same value on that pencil sharpener.
c. we say that there is a scarcity of 100 units of the good. d. None of the above is correct.
4. An increase in the number of college scholarships(奖学金） issued by private foundations would