exercise 7
牛津英语配套练习答案--8a-u1-penfriends
Exercise 1 for Reading (8AM1U1)I. Translate the following phrases into English :1. get a letter from sb2. know about3. an address in the top-right corner4. a date under the address5. a signature at the end6. want her to write to him soon7. play tennis 8. play rugby9. play baseball 10. play badminton11. a letter from a boy called Jon12. A postcode makes it easier for the post office to deliver lettersII. Read and write:1. penfriend2. address3.hobbies4.title5. football6.postcode7. encloseIII. Choose the best answer.1-6 C B C A A A 7-12 B C C D C DIV. Rewrite the sentences as required:1. Did …do2. is there3. called May4. wants to5. How…did6. What anV. Read the passage and fill in the blanks with proper words: 1. way 2. because 3. easily 4. either 5.another 6. quite 7. rightExercise 2 for Reading (8AM1U1)I. Answer the following questions according to the text.1. He is about one and a half meters tall.2. In penfriends magazine.3. He lives in the Uk.4. He owns a Chinese restaurant nearby.5. They are from Shanghai.6. He comes back home during the holidays.7. He walks to school.8. He is keen on sports.9. Physics.10. His ambition is to be an architect, or maybe an engineer.II. Translate the following phrases into English.1.in Penfriends magazine2.tell you something about myself3.call me Jon4.about one and a half meters tall5.I live with my parents in the UK.6.own a Chinese restaurant nearby7.work in a college8.He is at university in London.9.during the holidays10.walk to school11.I am keen on sports.12.enjoy skiing and playing table tennis13.my best subject14.My ambition is to be an architect.15.enclose a photo of myself.III. Write out the word or phrase according to the given meaning.1.ambition2. maybe3.enclose4. be keen on5. during6. own7. architect8. engineerIV. Fill in the blanks with the words in their proper forms.1. accountant2. engineer3. playing favourite4.height5.best6. friendlier7. enjoyable8. interested9. skiing 10 yourself 12.twelveV. Choose the best answer.1-5 D A C B D 6-10 B B A C A 11-15 C C B B AVI. Rewrite the following sentences as required.1. How long2. How often3. Where did4. didn’t have5. wants to6. am interested in7. put… inside 8. goes…to…on foot 9. What an 10. has sheVII. Read the passage and fill in the blanks with proper words1. Unluckily2. live3. exciting4. much5. weather6.past7. LoveExercise 3 for Grammar and Vocabulary(8AM1U1)I. Fill in the blanks with the suitable form of the given words.(词形转换)1. engineer2. friendly, friends3. accountant4. height5. enjoys6. owns, owner7. Skiing8.yourselves9. playing, favourite 10. photos 11. physics 12. herselfII. Choose the best answer. (选择题)1.B2. C3.C4.B5.B6.D7. C8. C9.A 10.C 11B 12.B 13.D 14.B 15.AIII. Rewrite the following sentences as required. (句型转换)1. doesn ’t get2. How long3. How much did4. keen on5. a withIV . Fill in the blanks with the suitable form of the given verbs. (时态填空)1. will play rains2. has written3. does …look4. will enjoy5. don ’t make6. was7.is raining8. visits9. has stopped 10. taughtExercise 4 for Grammar (8AM1U1)I. Fill in the blanks with the proper words.(选择合适的疑问词,并按正确形式填空) (20%) 1. which 2. How 3. Where 4. Why 5. What 6. Whose 7. What time 8. What 9. When 10. Who II. Complete the sentences according to the hints. (根据提示完成句子) (20%) 1. How far 2.How soon 3. How many times 4. How many 5. How tall 6. How often 7. How long 8. How much 9. How 10. How high III. Choose the best answer. (选择题) (40%) 1-5 DDABB 6-10 BBDAA 11-15 BDCAC 16-20 DCDCC V . Rewrite the following sentences as required. (句型转换) (20%) 1 What day 2 What date 3 Which boy 4 How much 5 How many 6 How far 7 How long 8 How soon 9 How often 10 How many times Exercise 5 for Listening and Speaking (8AM1U1) I. Remember these phrases in Listening. 1. black hair 2. quite long 3. parting in the middle 4. glasses 5. white shirt 6. blue tie II. Write down the words that are used to describe a person as many ________ 姓名________________ 学号__________- - --封○- - - - - - - - - - - - - - - -- - - - - - -线 ○- - - - - - - - - - - - - - - - - - - - - - - - - - - - -as possible.(For example)1. hair style: long, short, very long, curly…_2. colour:_black, brown, blond, blonde…_3. the colour of skin:_ black, brown, white, yellow…4. eyes:_big, small, blue, brown, …5. height:____________________________6. weight:___________________________7. wear:_____________________________ 8. age:_____________________________9. hobby:playing chess, sing, drawing,…_10 sports:running, swimmimg, playing basketball,…III. Key points in Speak up.1. let out voices fall2. make our voices rise3. roofV Read the article and choose the best answer1-5 BADCDExercise 6 for Cloze Test (8AM1U1)I. Fill in the blanks with the suitable words according to the givensituation.1.ambition2.favourite3. owns4.keen5. enclosed6. physics7. friendly8.sports9.hobby 10 .magazine 11. penfriend 12. architect13.nearby 14. engineer 15. playing 16. Maybe17. during 18. metres 19.college 20.another.II. Choose the best answer t0 fill in the blanks.1C 2.C 3.D 4.C 5.D 6.B 7.AIII. Read the passage and fill in the blanks with proper words.1.England2.glasses3.architect4.proud5.because6.subjects7.ambitionExercise 7 for Writing (8AM1U1)I. Translate the following phrases into English.1. your home address2. the address of your school3. Thanks a lot for your letter4. I'm happy to be your penfriend5. I'd like to tell you something about myself6. I'm 14 years old.7. I'm a fourteen-year-old boy/girl.8. I'm in Grade 8.9. my age 10. my height 11. my hair 12. my hobbies13. something about your family and your home 14. information about your school15. your ambition 16. It's great to hear from you. 17. I hope you'll write again soon.18. Best wishes 19. a letter from a penfriend 20. a letter to a penfriendII. Read the passage. (20%)(A)1. Sun Yan.2. No. 1 Middle School, Hui’an, Fujian,3. 362100.4. September 3.5. More and more meaningful and colorful. / Wonderful.(B) 1---5 B C B C DIII. Complete the sentences1. stayed2. right3. forgot4. seconds5. cameIV. Fill in the blanks(A) 1. Linda Brown 2. 14 3. English 4. Maths 5. WHOAMI(B)1. return 2. playground 3. library 4. grandfather 5. hardV. Writing.略。
英语语音练习试题
5、debt [ ] A.habit
B.above
C.club
D.climb
( )15. A. certain B. again C. trail D. faint
6、effect [ ] A.determination B.debt C.endless
D.bent
( )16. A. dear B. hear C. early D. fear
( )6.A. three B. those C. thank D. theatre
( )6. A. why B. where C. when D. who
( )7. A. physics B. quickly C. library D. ticket
1/4
( )7. A. courage B. operate C. package D. orange
1、 exist [ ] A.exit B.example C.expect
D.excellent
( )11. A. war B. farmer C. larger D. cart
2、 gram [ ] A.radium B.graduation C.radioactive
D.uranium
( )12.A. mule B. truth C. duke D. puke
7、institute [ ] A.bury
B.minute C.hurry
D.human
( )17. A. ceiling B. niece C. field D. friend
8、disappoint[ ] A.devote
B.Poland
C.go
D.shock
( )18.A. dew B. few C. blew D. new
exercise 7-12
Exercises for First Chapters 1 and 2I. Filling the blamks.1. At last early in the ___17______ century, the English settlements in ___Virgina________ and __Massachusetts_____________ began the main strems of what we recognize as the American national history.2. The earliest settlers in US, includes __duch_______ , Swedes, __germans_______,French ,_Spaniards_________,Italians and __ Portuguese___.3. The Puritans had come to New Land for the sake of _________________, while Virginia hadbeen plantedmainly as a ____________________.4. Hard work, _________, piety, and _________ were the Puritan values that dominated muchof the earliest American writing.5. Most Puritan verse was decidedly plodding, but the work of the two writers, Anne Bradstreetand Edward Taylor, rose to the level of ____________________.6. __________ was , probably, at once the first modern American and the country's lastmedieval man.7. The Puritans were opposed to _______________ and _______________.8. _______________ was the only American to sign the four documents that created theUnited States: the Declaration of Independence, the treaty of alliance, the treaty peace with England and the constitution9. Franklin's main literature achievement relys on his ___________________________ and___________________________.II. Define the following literary terms:1. American Puritanism2. Puritan writing stylesIII. Answer the following questions:1. give a description of Franklin.2. what does Franklin's Autobiography reflect?3. Why do people think Franklin is the embodiment of American Dream?Chapter 3I. Filling the blanks.1. The American Romanticism lasted from the end of 18th century to the __________________.2. As a logical result of the foreign and native factors at work, American Romanticism was both ______________ and ______________________.3. Through the first half of 19th century the persuit of _____________, utility, and _________________ remained an American characteristic.4. Irving's _______________ became the first work by an American writeer to win financial success on both sides of the Atlantic.5. ______________ values were prominent in American politics, art, and philosophy until the Civil War..6. Romantic writers placed increasing value on the _______________ expression of emotion and displayed increasing attention to the _______________ states of their characters.7. __________ was the first great prose stylist of American romanticism, and his familiar style was destined to outlive the formal prose of such contemporariess as Scott and Cooper.8. Irvinf was the first great ____________, writing always for _____________, and to produce ___________________.9. Cooper lanuched two kinds of novels, _________________ and _______________.10. _________________ was the father of Short story in American.11. As a logical result of the foreign and native factors at work, American Romanticism was both ______________ and __________________. (imitative, independent)12. _______________ marked the beginning of Ameican Romantisim. (The Sketch Book)13. The Leatherstocking Tales was written by __________. (James Fenimore Cooper.)II. Answer the followings briefly.1. American Romanticism2. Features of American RomanticismIII. State the followingsConflict thoughts in Leatherstocking TalesChapter 4I. Filling the blanks.1. ____________________________ is called the summit of American Romanticism.2 Transcedentalism is also called ________________.3. Transcedentlists formed a club ___________________________ and published their own journal ________.4. New England Transcedentlism was the product of a combination of _____________ and ____________. (foreign influence, American Puritan tradition)5. ________ is regarded as the Bible of Transcedentalism. (Nature)6 ______________ has been regarded as “America’s Declaration of Intellectual Independence”. (The American Scholar)7. In the book, “The American Scholar”, Emerson advocated the Americans should write about _____________. (American itself.)8. Henry David Thoreau wrote his masterpiece, __________. (Walden)II. Answer the following question briefly.TranscedentalismThe sources of TranscedentalismIII. What are the thought sources of Transcedentalism?IV. Emerson’s aethetics.V. Emerson’s ideas in his literature career.How to interpret the INDIVIDUAL in Nature?Chapter 5 to 6I. Filiing the blanks1. with the book, _____________, Hawthorne became famous as the greatest writer in America.(The Scarlet Letter.)2. The letter “A” in the book stands for ____________, ____________ and ______________.(adultery, able, angel)3. Melsille wrote his famous book _______________, which fully presented the Sybolism.(Moby Dick)4.Hawthorne was haunted in his life by his sense of sin and evil.5.Hawthorne’s most of books revealed the social “ blackness”.6. Whitman wrote about ______ poems, which were collected in _________________. (400,Leaves of Grass)7. the last poem in Whitman’s life is _____________________. (Goodbye, My Fancy)8. _________ first wrote about the common people and daily event in poems. (Whitman)9. Dickinson’s themes in poems is about __________, __________, and ___________. (love,suffering, death)10. Dickinson worte altogether ____________. (1175)11. Dickinson’s basic tone in her poems is __________. (tragic)II. Short answer to the followings.1. Hawthorne’s main thoughts in his writing.2. State three subsections of Whitman’s poems briefly.3. Compare two poets Dickinson and Whitman.III. Give an account of Whitman’s contribution to American literature.Give an account of characters of Dickinson’s poems.Analyze the structural patterns in Dickinson’s poems.7到十二I. Filling the blanks1. ____________ is the father of the detective story in America. (Allan Poe)2. ____________ dorminated American literature for 50 years. (Howells)3. The Rise of Silas Lapham was ______________’s masterpiece. (Howells)4. Henry James was concerned with “___________________”which is the center of hisaesthetics of the novel. ( point of view)5. The appearrance of Bret;s Harte’s “_______________________________-“in 1868 markeda significant development in the brief history of local color fiction. (The Luck of RoaringCamp)6. Local colorists concerned themselves with presenting and interpreting the ______________________ 0of their region. (local character)7. Local Colorism lasted from _________ to _____________. (1860s ,the end of the century).II. Define the literatural terms listed below.RealismIn American literature, the Civil War brought the Romantic Period to the end. The Age of Realism came into existence. It came as a reaction against the lie of Romanticism and sentimentalism. Realism turned from an emphasis on the strange toward the ordinary and a slice of life as it is really lived. It expresses the concern for the common place and the low, and it offers an objective rather than an idealistic view of human nature and human experience. Realist literature finds the drama and the tension beneath the ordinary surface of life. A realist writer is more objective than subjective, more descriptive than symbolic. Realists looked for truth in everyday truths.Mark TwainMark Twain is one of the great artists of all time, he was and an authentic giant of American national. He is the main representative of Local Colorism. His satire and humor are as popular today as at any time in American history. Mark Twain’s significant contribution to American literature lies in the fact that he made colloquial speech an accepted, respectable literature medium in the literary history of the country. His masterpiece is the Adventure of Tom Sawyer and the Adventure of Huckberry Finn.Local colorismIt refers to a literature which has local texture and background that it could not have been written in any other place or by anyone else than a native. It is characterized with a local culture, elements such as speech, customs, and mores peculiar to one particular place. It is also concerned with ite local background including the physical setting and landscape which condition human thought and behavior.Local colorists concerned with themselves with presenting and interpreting the local character of their regions. They tend to idealize and glorify, but they never forget to keep an eye on the truthful color of local life.II. State the following briefly.1.Evalute Poe in the histroy of American literature.Poe remained the most controversial and most misunderstood literary figure in the history of American literature. He was for and against by American. Ironically, in Europe, Poe enjoyed respect and welcome. Swinburne, Bernard Shaw, D. H. Lawrence and W. H. Auden all admired and spoke highly of him.2.State Henry James’ three writing periods.His tree distinctive periods was: the first is from 1865 to 1882 which he wrote a number of novels such as American. He won the international fame in the period; the second is from 1882 to 189, which he wrote his tales of subtle studies of inter-personal relations; the third is from 1895 to 1900, which he wrote some novels tand tales dealing with childrenhood and adolescence. He won his fame again3.State Pound’s poetic principles.1)direct treatment of the thing;2)to use absolutely no word that does not contribute to the presentation;3)as regarding rhythm, to compose in the sequence of the musical phrase, not in thesequence of a metronome.IV. Statementpare three realist writers: Howells, James and Twain.They all worked for realism. But they are quite different. On theme, James wrote mostly of the upper reaches of American society, and Howells concerned himself chiefly with middle class life, whereas Mark Twain dealt largely with the lower strata of society. On techniques, Howells wrote in the vein of genteel realism, but Mark Twain’s contribution to the development of realism and to American literature as a whole was partly through his theories of localism in American fiction.课文内容➢Introduction➢Brief Outline of American Literature➢Chapter I Colonial Period➢Chapter II Revolutionary PeriodBenjamin FranklinPhilip Freneau➢Chapter III American RomanticismWashington IrvingJames Fenimore CooperWilliam Cullen BryantEdgar Allan PoeNathaniel Hawthorne第一章➢Introduction➢Brief Outline of American Literature➢Chapter I Colonial Period➢Chapter II Revolutionary PeriodBenjamin FranklinPhilip Freneau➢Chapter III American RomanticismWashington IrvingJames Fenimore CooperWilliam Cullen BryantEdgar Allan PoeNathaniel Hawthorne➢4Why did Puritans come to America?- to reform the Church of England- to have an entirely new church- to escape religious persecution* God’s chosen people* To seek a new Garden of Eden* To build “City of God on earth”➢5Influence- Puritanism can be compared with Chinese Confucianism- American Puritanism was one of the most enduring shaping influences in American thought and American literature.- American literature is based on a myth, i.e. the Biblical myth of the Garden of Eden.- Simplicity in writing skillsThree major poets in colonial period Three major poets in colonial period1.Michael Wigglesworth ,Anne Bradstreet ,Edward TaylorAnne Bradstreet (1612-1672)1.Anne Bradstreet’s Works“contemplation”《沉思录》“The Spirit and the Flesh”《灵与肉》The Tenth Muse Lately Sprung Up in America 《北美洲最近出现的第十个缪斯》2.Anne Bradstreet’s Life* She was born and educated in England.* At the age of 18, she came to America in 1630 with her father and husband.* She had 8 children.* She became known as the “Tenth Muse” who appeared in America.二Michael Wigglesworth (1631-1705)the most popular poet in American Colonial PeriodWork: “The Day of Doom” (1662三Edward Taylor (1642?-1729)the finest poet in colonial periodWork: Preparaory Meditation 《自省录》metaphysical poets/thoughts四Other writers in colonial period:Roger williams (1720-1772 Thomas Paine (1737-1809) philip Freneau 91752-1832Charles Brown (1771-1810五Features of Colonial Poets and Works1.They were servants of God.2.They faithfully imitated and transplanted English literary traditions.Chapter2Revolutionary Period (1775-1783)The Age of Reason”“American Enlightenment”•Splendid thoughts in this period in the world:Newton's gravity Rousseau in FranceAlexander Pope in England Daniel Defoe in England???•In the 18th century, people believed in man’s own nature and the power of human reason.With Franklin as its spokesman, the 18th century America experienced an age of reason.•Words had never been so useful and so important in human history. People wrote a lot of political writings. Numerous pamphlets and printings were published. These works agitated revolutionary people not only in America but also around the world.•The 18th-century American Enlightenment was a movement marked by an emphasis on rationality rather than tradition, scientific inquiry instead of unquestioning religious dogma, and representative government in place of monarchy.•Enlightenment thinkers and writers were devoted to the ideals of justice, liberty, and equality as the natural rights of man.•The colonists who would form a new nation were firm believers in the power of reason;they were ambitious, inquisitive, optimistic, practical, politically astute, and self-reliant. Leading writers and their works•Edwards(1703-1758) The Freedom of the Will; The Nature of True Virtue; The Great Doctrine of Original Sin Definended•Thomas Jefferson(1743-1826): The Declaration of Independence (1776)•Thomas Paine(1737-1809): Common Sense (1776)•Benjamin Franklin: Autobiography•Philip Freneau: “The Wild Honey Suckle”Edwards (1703-1758)His Works: The Freedom of the Will; The Nature of True Virtue; The Great Doctrine of Original Sin DefinendedHis Thoughts: to reveal the mind of the man;to believe in the regeneration of man;to hold the belief that God is the Master of the nature and souls.Benjamin Franklin (1706-1790)•Woks The Autobiography 自传Poor Richard’s Almanack《穷查理历书》•Life:Benjamin Franklin came from a Calvinist background.•He was born into a poor candle-maker’s family. He had very little education. He learned in school only for two years, but he was a voracious reader.•At 12, he was apprenticed to his elder half-brother, a printer.•At 16, he began to publish essays under the pseudonym “Silence Do good” .•At 17, he ran away to Philadelphia to make his own fortune.•He set himself up as an independent printer and publisher. In 1727 he founded the Junto club•Franklin’s Contributions to Society•He helped found the Pennsylvania Hospital.•He founded an academy which led to the University of Pennsylvania.•And he helped found the American Philosophical Society.•Franklin’s Contributions to Sci ence He was also remembered for volunteer fire departments, effective street lighting, the Franklin stove, bifocal glasses and efficient heating devices.•And for his lightning-rod, he was called “the new Prometheus who had stolen fire from heaven.”•Frankl in’s Contributions to the U.S.•He was the only American to sign the four documents that created the United States: •The Declaration of Independence,•The Treaty of Alliance with France,•The Treaty of Peace with England,•The Constitution•Evaluation•The Autobiography is a record of self-examination and self-improvement.•Benjamin Franklin was a spokesman for the new order of the 18th century enlightenment •The Autobiography is a how-to-do-it book, a book on the art of self-improvement. (for example, Franklin’s 13 virtues)•Through telling a success story of self-reliance, the book celebrates, in fact, the fulfillment of the American dream.•The Autobiography is in the pattern of Puritan simplicity, directness, and concision••Crevecoeur (克里夫古尔)(1752-1832•the new man of American•Pioneer of the comments on literature works•his works: Letters from American Farmer (1775•Philip Freneau•“Poet of the American Revolution”“Father of American Poetry”•“Pioneer of the New Romanticism”“A gifted and versatile lyric poet”•Life He was born in New York. At 16, he entered the College of New Jersey (now Princeton University). While still an undergraduate, he wrote in collaboration with one of his friends (H. H. Brackenridge) a poem entitled “The Rising Glory of America。
英语改错
Exercise 5
00After I finished the school this year, I began to 1. _______
00look for work. Now several month later, I still hadn t 2. _______
00found the job that I was interested. Last Sunday morning 3. _______
00his office with a beaten heart. How I hoped that I 7. _______
00will go through the job -hunting talk today and he would 8. _______
00take me on as a lab assistant. But to my surprised, 9. _______
00is increase the students interest in learning English and 3. _______
00improve their spoken English. Which is going to be held in 4. _______
00the school main hall and will begins at 7:30. And the 5. _______
00in this contest should go to the office of the Students 9. _______
00Union and sign it up your names and the topics of your 10. ______
exercise用法辨析
exercise用法辨析今天给大家带来exercise用法辨析,让我们一起来学习吧。
下面就和大家分享,来欣赏一下吧。
练兵秣马:exercise用法辨析Bodily exercise, when compulsory, does no harm to the body; but knowledge which is acquired under compulsion obtains no hold on the mind. —Plato体育运动如果是出于强迫,不会有害于身体;但在强迫之下获得的知识,不能保留在头脑中。
——柏拉图一、下面我们来看看exercise有几种含义n.1.运动,锻炼[U,C]Temperance and exercise conduce to good health.节制与运动有益于健康。
2.练习,习题[C]Do the vocabulary exercise at the end of the chapter.做这一章末尾的词汇练习。
3.【军】演习,操练[C]Praised as a heroine by many, others denounced her rescue as a staged event used by Pentagon officials as a propaganda exercise.许多人称她为英雄,也有人公开指责说林奇的获救就像一出舞台戏,被五角大楼官员们用作宣传演习。
4.(特定的)活动,行动It has become a threat to democracy and may render the presidential election an exercise in futility.这是对民主本质的一大威胁,可能使总统选举成为有名无实的民主活动。
5.(权力,权利等的)行使,运用The government must be careful in its exercise of power.政府在行使其权力时必须小心谨慎。
形式语言与自动机Chapter7练习参考解答
Chapter 7 练习参考解答Exercise 7.1.3 从以下文法出发:S → 0A0 | 1B1 | BBA → CB → S | AC → S | εa) 有没有无用符号?如果有的话去除它们。
b) 去除ε-产生式。
c) 去除单位产生式。
d) 把该文发转化为乔姆斯基范式。
参考解答:a)没有无用符.b) 所有符号S,A,B,C都是可致空的,消去ε-产生式后得到新的一组产生式:S → 0A0 | 1B1 | BB | B | 00 | 11A → CB → S | AC → Sc) 单元偶对包括:(A,A),(B,B),(C,C),(S,S),(A,C),(A,S),(A,B),(B,A),(B,C),(B,S),(C,A),(C,B),(C,S),(S,A),(S,B),(S,C),消去单元产生式后得到新的一组产生式S → 0A0 | 1B1 | BB | B | 00 | 11A → CB → S | AC → SS → 0A0 | 1B1 | BB | 00 | 11A → 0A0 | 1B1 | BB | 00 | 11B → 0A0 | 1B1 | BB | 00 | 11C → 0A0 | 1B1 | BB | 00 | 11d)先消去无用符号C,得到新的一组产生式:S → 0A0 | 1B1 | BB | 00 | 11A → 0A0 | 1B1 | BB | 00 | 11B → 0A0 | 1B1 | BB | 00 | 11引入非终结符C,D,增加产生式C → 0和D → 1,得到新的一组产生式:S → CAC | DBD | BB | CC | DDA → CAC | DBD | BB | CC | DDB → CAC | DBD | BB | CC | DDC → 0D → 1引入非终结符E,F,增加产生式E → CA和F → DB,得到满足Chomsky范式的一组产生式:S → EC | FD | BB | CC | DDA → EC | FD | BB | CC | DDB → EC | FD | BB | CC | DDE → CAF → DBC → 0D → 1Exercise 7.2.1(b)用CFL泵引理来证明下面的语言都不是上下文无关的:b) {a n b n c i | i ≤n}。
大学英语(三)Unit 1 Passage A Exercise 答案
Answer: Frogs were being found whose skin was like paper.
(Para. 12)
Answecies”.
Then, I understood.(Para. 13)
(Para. 14)
Answer: The frogs have a message for us.
(Para. 14)
Answer: We must be the adults for the planet.
We (humans and fogs)are related.(Para. 15)
Answer: open
You tell the frog what you will do.
Answer: open
2. Find out more supporting details in the passage for the following statements, especially the underlined parts.
(Para. 6)
Answer: He stopped and turned around and just sat there looking at me.
I felt I understood why he was there.(Para. 8)
Frogs simply want to hear other frogs and to communicate. (Para. 8)
I found a tree frog in my studio some months ago. I took it to my g (您未填写此题) , as I thought it would be a better place for the frog.But it came back and insisted taking the r (您未填写此题) in the studio. Why? I couldn’t get an idea. Then, after five months of being together, we seemed to be able to c (您未填写此题) with each other. It may sound w (您未填写此题) , but I did feel I came to understand what it wanted me to do. The frog came to me probably attracted by the h (您未填写此题) tone of my computer, which sounded like that of other tree frogs, or with a m (您未填写此题) to tell me that frogs were dying around the world because of their s (您未填写此题) to the pollution and global climate change. As frogs are an“ i (您未填写此题) species”, what has happened to them may happen to us, if we sit back and do nothing. We must act now, or it would be too late.
7A Unit4 导学案参考答案
高邮市初中英语导学案7A Unit4 参考答案Welcome to the unit【预习指导与检测】二、预习成果(一)1. at lunchtime 2. have a hamburger 3. feel hungry 4. need a lot of energy 5.a healthy person 6. dislike carrots 7. different kinds of food 8. many times a day (二)1. hungry2. Never3.vegetables4. hamburger5. bowls6. exercises7. times8. likes 【当堂反馈】(一)1. hamburger 2. always 3. hungry 4. vegetables 5. healthy 6. exercise (二)1. healthy 2. less, more 3. well 4 .doing 5. plays, is playing (三)1. Tom needs a hamburger. 2. I don’t need any money. 3. We need to keep healthy. 4. ---Must I finish the work today?---No, you needn’t.5. We don’t need to/needn’t/don’t have to feed the goldfish too much food.6. We exercise /do some exercise every day.7. She does eye exercises every afternoon.8. They always do many exercises. 【课后拓展】1-5 BACAA6-10 BACBDReading(1)【预习指导与检测】二、预习成果(一)1. keep fit 2. a healthy diet 3. sweet snacks 4. get tired 5. a top student 6. have/eat sth. for breakfast/lunch/supper 7. need lots of energy to dance 8. run fast 9. plan to go swimming 10. be healthy/ be in good health (二)1. dancer 2. healthy 3. exercises 4. eats 5. chatting 6. healthy 7. great/good/beautiful 8. happy 9. tired 10. delicious/nice【当堂反馈】(一)1. important 2. vegetables 3. hamburgers 4. hate (二)1-6 ACDDCC (三)1. I want to be a dancer. 2. It’s easy for me to get tired when I dance. 3.It's time for me to change now. 4. I plan to go swimming twice a week. 5. It’s very important for us to learn English well.6.They give me energy, but they are not healthy.7.Eating too much sweet food will make you fat.8.Y ou needn’t change your diet or lifestyle.【课后拓展】 1.wants 2.for 3.needs 4.seldom 5.sugar 6.healthy 7.for 8.top 9. or 10. changeReading(2)【预习指导与检测】二、预习成果(一)1. How often does Millie dance? 2. How long do you watch TV every day?3. How often does she have hamburgers for breakfast?4. How much bread do you need?5. How much do you know about their school?6. How much is the book ?/how much does the book cost?/what’s the price of the book?7. How many people are there in his family? (二)1.has 2.to buy 3.twice 4.to sleep 5.dancers, to dance【当堂反馈】(二)1.How long does Simon always swim every week? 2.How often do they watch football matches 3.How many pieces of bread are there for us? 4. How often does Daniel change his diet? (三)1.It is very important for people to keep fit/healthy. 2.Do you know sweet snacks are not good for our health? 3. Jim is careful with his homework. 4. How much milk do they drink every day? 5. What do you usually eat for breakfast? 6. Y ou must change your diet, because you need lots of energy.【课后拓展】1—5 BACDDVocabulary【预习指导与检测】二、预习成果(一)1.lifestyle 2. healthy 3.diet 4. change 5.hamburger 6.exercise 7. before8. seldom 9. kitchen 10 .singer (二)1.salty 2.dishes 3.mooncakes, sweet 4. knives 5. photos 6. rain, rainy 7. radio 8. mangoes 9. women 10. chickens 【当堂反馈】(一)1. the Get Fit Club 2. a cold drink 3. five mangoes and eight tomatoes 4. two bags of rice 5.three bottles of lemon juice 6.a yellow fruit (二)1—5 BCCCD 6—10 BDCDB (三)1.does, read 2.eating 3.to buy 4.twice 5.has (四)1.I often eat vegetables like cabbages now. 2. I never eat snacks now, because they have a lot of sugar. 3 It is very easy for me to get tired.4. I also like playing computer games and chatting with my friends on the Internet. 【课后拓展】 1. exercises 2. sleeps 3. watches 4. seldom5. eats6. vegetables7. walks8. has9. After 10. homeGrammar(1)【预习指导与检测】二、预习成果(一)stories, wishes, sheep , Chinese, tomatoes, knives, teeth, feet mangoes, radios, libraries, shelves, Walkmans, children, oranges, boxes, kilos, watches , potatoes, classes (二) 1. My mother and I usually go shopping at weekends.2. He never goes to the supermarket to buy mangoes.3. My father is always very busy.4. Does your cousin often play football?5. They sometimes go roller skating.【当堂反馈】(一)1. two cups of tea 2. a kilo of meat 3. three packets of sweet 4. four bags of rice 5.three glasses of milk 6. six packets of salt 7.eight knives 8. five kilos of beef 9.two baskets of potatoes 10.two boxes of knives 11.Miss Li often drinks two cups of green tea. 12. My mother needs to buy three packets of salt.13. On Mid-Autumn Festival we will eat five boxes of mooncakes. 14. There are two baskets of potatoes in the kitchen 15. He has some pieces of bread for breakfast. 16.Tom doesn’t have too much time to go roller skating. (二)1. an 2. a 3. an , a 4./ 5. an 6. an 7. an 8. a 9.a , / 10. / , a ,【课后拓展】1—5 CBDBC 6—10 CADABGrammar(2)【预习指导与检测】二、预习成果(一)1. is 2. are 3. are 4. Are 5. is 6. is 7. is 8. is (二)1. Is there an ‘ h’ in the work ‘ fish’? 2. There are not two pictures on the wall.3. How many women are there in the room?4. What is on the desk?5. How much beef is there on the table? 【当堂反馈】1. How often does go 2. How many factories are there 3. Is there any 4. There are not 5. There are some bottles6. Is there a child7. has8. There’s【课后拓展】1—5 BBADDIntegrated skills【预习指导与检测】二、预习成果(一)1. less than two weeks. 2. more than / over three hours. 3. three to six times 4. not…at all 5. Congratulations to sb. 6. exercise more 7. watch less TV.8. I do exercise less than two times a week. 9. He doesn’t like biscuits at all.10. We usually spend two hours doing homework./We usually do homework for two hours. /We usually do two hours of homework.【当堂反馈】1. Simon spends one hour playing football everyday./ Simon plays football for one hour every day./ Simon plays one hour of football every day. 2. He is not fit at all. 3. Congratulations to you on winning the match. 4. There are more than /over 50 students in our class. 5. Y ou need to exercise more and watch less TV.【课后拓展】1-5 BADBCSpeak up & Pronunciation【预习指导与检测】二、预习成果(一)1.not…any more 2. feel good 3. Good luck with sth. 4. lie on the couch 5. I won’t be late any more./I am no more late.6. He doesn’t play computer games any more/ He no more plays computer games 7. How do you like your new diet?=What do you think of your new diet?(二)1. luck 2. lying 3. lucky 4. carry 5. fruit 6. too 【当堂反馈】(一)1. ↘ 2. ↘ 3. ↘ 4. ↘ 5. ↗ 6. ↘7. ↘8. ↗(二)1. to drink 2. does sleep 3. are 4. eating 5. buy 6. carries (三)1-5 BDCDB 6-10 DBDDD【课后拓展】1.Look 2. some 3. or 4. is 5. cook 6. are 7. one 8. bottles 9. any 10. wantsMain task【预习指导与检测】二、预习成果(一)1. need lots of energy 2. a glass of orange juice 3. be good for… 4. stay healthy5. have rice with fish6. help me start the day7. It is important to drink lots of water ever day.8. Y ou can drink water without getting fat.9. There are no calories in water. 10. This meal gives me energy for the afternoon and for playing volleyball. (二) 1. Eating 2. having 3. without 4. soup 5. salt 6. dancers 【当堂反馈】(一) 1. peanuts 2 amount 3.energy 4. member 5.vegetables 6.without 7 .calories 8.playing 9. basketball.(二)1. Would, tea, coffee, 2. spends, practicing, speaking 3. plays, football 4. goes, to, to, buy 5. three, meals, a, day 6. important, to, keep, fit 7.good, for, my, health. 8.washes, twice, a, week (三)略【课后拓展】1-5CACCCCheckout【预习指导与检测】二、预习成果(一)1. some noodles 2. an hour 3. two bags of rice 4. five kilos of meat5.some packets of salt6. a cup of tea7. three bowls of soup8.a pot of sweets9.three cartons of milk 10. many times a day 11. keep fit/stay healthy12. have/eat…for breakfast 13.too many 14. too much 15. more than 16. less than 17. three to six times a week 18. not…at all 19. nine knives 20. ten children(二)1.vegetables 2. dancer 3. important 4. healthy, change 5. sweet 6. cartons7. Congratulations 8. lies 9. packet 10. feel 11. peanuts 【当堂反馈】1. important to keep healthy2. rice with fish and soup3. are good for our health4. without getting fat5. Drinking enough water6. for two hours a day7. is importantfor a dancer. 【课后拓展】 1. way 2. wash 3. right 4. hot 5. cold6. bathroom7. meals8. visiting9. clean 10. or。
5.介词
5 介词Exercise 1 用适当的介词填空1.Don't laugh __________ the classmates wo fall behind you.2.They look down __________ us and do not teat us __________ friends.3.Will you join __________ us? Let's take part __________ planting trees together.4.A: What do you think __________ the work of the training center?B: Not very good.5.A: Are you busy __________ the project?B: Y es, I don't have free time during the week.6.Y ou are good __________ art. I hope you will do better __________ the subject this year.7.The boss was angry with the salesgirl and decided to give a lesson __________ her.8.We are proud __________ China. We'll built it __________ a rich and powerful country.9.Betty is different __________ her sister. She is __________ her brother, too.10.__________ what are you quarrelling __________ the nurse?11.Some people die __________ cancer and some die _________12.He has a clinic __________ his own. Now he works __________ his own.Exercise 2 用适当的介词填空1.__________ his, my trouble is nothing.2.There other experts at disease are coming __________ Professor Johnson.3.__________ the Internet, we can communicate directly with the United Nations.4.In the gaseous state molecules are very great distances apart in comparison __________their size.5.Y our article is well written except __________ a few spelling mistakes.6.The pine trees were black __________ the morning sky.7.My favorite singer is now __________ the radio.8.He can be very rude but __________ the same time you cannot help liking him.9.He thinks the grammar of American English is different __________ that of British English.10.__________ the years he is becoming more and more patient.11.They are arguing __________ their classmates __________ the solution to the problem.12.A: What a lovely day! Shall we go __________ a drive?B: But I'd like to be __________ a flight.13.He's given __________ playing football and now he's __________ computers.14.Y ou have to explain __________ us the reason __________ being late.15.A: What's that kind of radio __________ ?B: It's a pocket one, very nice and fine.16.Good friends should share joys and sorrows __________ each other.17.His white hair was in sharp contrast __________ his dark skin.18.I bought a book __________ gardening.19.I'm interested __________ finding __________ what she did with all the money..20.A: I never thought __________ hunting __________ the key under thebook.B: Neither did I.Exercise 3 用适当的介词填空1.A: We all succeeded __________ him.B: What a pity!2.We managed to get it black __________ her knowing.3.She has been struggling __________ illness for many years.4.People have high regard __________ the new policy.5.As a young man, he saw the great need __________ increasing the rice output.6.Tourists have increased __________ number this year.7.Y ou should rid yourself __________ that bad habit.8.Those who are not satisfied __________ what they have got will of course make greater progress.9.We go to the park every day __________ Monday.10.__________ "teacher" we refer to the person who supplies the information.11.I had nothing __________ __________ a slice of bread.12.The leader is always concerned __________ the growth the younger generation.13.Businessmen don't often have much free time as their work takes __________ in their time.14.He is a learned teacher, so all the students look __________ __________ him.15.Could you tell me __________ the difference __________ the two houses?16.Teachers are busy. A lot of them often prepare their lessons late __________ night.17.The boy was so hungry that he ate __________ the whole cake __________ a moment.18.He has an old mother to care for __________ his own work19.I don't know whether the project will come __________ at the meeting tomorrow.20.I feel quite happy whenever I meet someone who has a lot __________ common __________ me.Exercise 4 用适当的介词或副词填空1.It is __________ six o'clock now.2.How many questions came __________ at yesterday's meeting?3.He booked the holiday without __________ my wishes.4.The book is admirable __________ __________ __________ style.5.Y our letter calls __________ the days when we worked together on the farm twenty years ago.6.Y ou must pay me __________ the money you borrowed from me years ago.7.Neither country pay me __________ the money you borrowed from me years ago.8.Close Attention is being paid __________ present movements __________ the international market.9.Can you tell me how many states the United States consists __________?10.He explained __________ me how the machine was used.11.Y ou'd have more chance __________ catching the train if you got a bus to the station.12.The teacher asked us to keep __________ mind what he had just said.13.Can grass be made __________ paper?14.In this area, people used to make bridges __________ wood.15.For a few hours they were __________ control of the small town.16.Everything goes wrong __________ time to time.17.Can you fix me __________ with a part-time job?18.__________ __________ __________ our quotation, we will discuss it later.19.We took comfort __________ the fact that they won as much 50% percent of the vote.20.He takes advantage __________ her lack of business knowledge.Exercise 5 用适当的介词或副词填空1.__________ the sun, nothing would grow.2.The speed of sound varies __________ solid, liquid and gases.3.The boy is crazy __________ collecting stamps.4.She folded __________ the letter and put it in her pocket.5.They were tearing __________ the old building in order to build a new apartment house.6.The road bends __________ the right.7.When studying, he focused his mind __________8.Be more specific __________ what you want to do.9.__________ the rain we would have had a nice holiday.10.We communicate __________ each other by letter.11.The young man, __________ the name Mike, has been in Beijing for five years.12.Qingdao is famous __________ its beautiful scenery.13.The teacher asked the students to get down __________ studying.14."I don't think there's any danger," said the electrician, "But you'd better switch the electricity off __________ __________."15.The teacher refused to have his daughter in his class, __________ __________ __________ showing favor to her.16.I always put some money in my pocket __________ __________ __________ need.17.The law is still __________ effect.18.A: I'm learning to dance __________ the direction of Mrs Brown.B: Oh, yes. She 's good dancer.19.What effects do you think the chance in eating habits will have __________ agriculture or nature?20.The students referred __________ in the letter is my classmates.Exercise 6 用适当的介词填空1.__________ __________ __________ the bad weather, we went fishing.2."Who is __________ duty today?" the teacher asked.3.Be a pupil __________ you become a teacher.4.He is a teacher of many gifts, so all he students looked __________ __________ him.5.__________ all our efforts we still lost the game.6.He struggled __________ those who opposed his plan.7.They decorated the house __________ __________ cost.8.Y ou can't leave the country __________ a passport.9.As he was ill, I went to the meeting __________ __________ him.10.The president of the university gave an interview __________ me last Wednesday.11.On the way home yesterday, she had her wallet robbed __________.12.It was __________ a cold afternoon __________ 1997 that I met him __________ the first time.13.Bush arrived __________ Beijing __________ ten this morning.14.School holidays are __________ Christmas, Easter and during the summer.15.Listened carefully. This question is closely related __________ the one to be discussed.16.When Mr Brown moved to Australia, the children adapted __________ the changes very well.17.When did the word come __________ use?18.Y ou can't depend __________ others to help you.19.Having suffered __________ heart illness for years, he and his son have to take medicine wherever he goes.20.What a different man he is __________ what he was four years ago!Exercise 7 用适当的介词填空1.Thanks __________ doing it __________ me.2.I read out loud __________ __________ __________ __________ recording.3.They gave a party __________ __________ __________ John.4.They governments of the world should do more to provide access __________ clean drinking water.5.Now some people refuse to buy products __________ companies that harm the environment.6.We should spend more money __________ science so that we can use coal __________ a much better way.7.He has bought land __________ __________ __________ __________ building a house.8.She lived in a poor district __________ a house shared __________ another family.9.The earth Summit is not just __________ problems. __________ fact, it isa place to find solutions __________ the future.10.We all agree that education is the key __________ he future.11.Many __________ the friends Betty had made were invited __________ her birthday party.12.Lenin took part __________ the revolutionary work when he was young.13.Boys always prefer playing outside __________ staying __________ home.14.The first Olympic Games __________ modern times were held __________ 1896.15.In Barcelona the Chinese team got 16 gold medals, 12 __________ which were won __________ women.16.He did his best to catch __________ __________ us, but he was unable to.17.The their hid himself __________ the door.18.The railway goes __________ the mountain and the forest.19.He hasn't seen his uncle __________ five years.20.I'll finish the work __________ the end of this month.Exercise 8 用适当的介词填空1.They succeeded __________ __________ __________ hard working.2.Do you think it is a difficult problem for this child to work it __________?3.I'm afraid that their team has advantages __________ ours in today's football match.4.__________ __________ these figures, our company is doing well.5.At the dinner we usually started with soup and ended __________ with fruit.6.They taught us how to burn a pieces of coal to make the most __________ it.7.My boss has made a plan __________ further study in Tsinghua University at the end of the year.8.The fat man, who is __________ a diet, has refused to follow my advice of taking moe exercises.9.He drew that conclusion __________ the basis of the facts.10.My parents considered my friend to be a bad influence __________ me.11.He made a living __________ hard working.12.The photo reminds me __________ the happy days when we studied together in the university.13.Weather report says that tomorrow will turn __________ to be fine. We can go for a picnic. 14.Few areas in the world nowadays are completely free __________ air pollution.15.The parents were very pleased yo see their children furnished __________ all they need in the winter there.16.It is said that the new Chinese panda coin is made __________ pure gold.17.Tomato that sued to be selled at 12 cents a can is now __________ sale for 10 cents in this shop.18.It was snowing . Y oung Mary felt cold, so she stood close __________ her mother.19.He made up his mind to tell her just now things stood __________ him.20.It's too hot outside. We'd better close the windows to keep the heat __________.Exercise 10 用适当的介词填空1.Mary lives __________ 48 John Road __________ Albert Street.2.Help yourself __________ some pork, please.3.He is waiting __________ you __________ the bus station.4.__________ the way, what time is it __________ your watch?5.How did you go there, __________ car or __________ foot?6.Will you help Tom __________ his lessons __________ Sunday evening?7.The scientist's going to speak __________ the meeting.8.I often go to bed __________ a quarter __________ ten.9.Don't worry __________ Lily. She can keep up __________ the class.10.She turned __________ the radio and began to listen __________ the news.11.She came into the room __________ a smile __________ her face.12.We planted trees __________ the foot __________ the hill.13.__________ the way to school I met a friend __________ mine.14.He'll give is a talk __________ English names the day __________ tomorrow.15.Please be more careful __________ now on.16.What have you done __________ the milk?17.I've a lot __________ homework to do.18.There's many apples __________ the tree.19.My uncle worked __________ a farm __________ 1995.20.Our teacher showed the guests __________ the school.。
人教版英语七年级下册Units1-3单元综合知识练习(附答案)
Units1-3单元综合知识练习一.完成句子A 用所给词的适当形式填空1.Thanks for _______(help )me.2.He can _____(play) ping-pong and tennis.3.Does his sister want ________(join) the music club?4.Bill likes swimming very much , he wants to join the ________(swim) club.5.My sister often _____(brush )her shoes on Sundays.6.Does you father _________(exercise )every day?7.Let’s _______(clean )the classroom.8.Ice cream usually tastes ________(well) so students like to eat it after class.9.He is never late for the _______-__(one) class in the morning.10.Who ________(help )you with your English?11.My brother often __________(study ) with me.12.My sister _______________( not like) reading books.13.It ______(take ) me half an hour to do my homework every day.14.How long does it take you _______(walk) to school?15.There are five __________(library) in our city.16.There are five _________(hundred) students in the school.17.It takes him about 20 minutes to get to his ______________(grandparent) home.18.What about _________(play)basketball?19.Mike __________(live) in Beijing with his parents.20.My friends likes _______(take)the train to Beijing.21.I can see some nice _______(bike) in the pictures.22.It’s easy for me ________(get) there.23.Can the ___________(village) dream come true?24.They are good ____________(music).25.His brother ____________(cross) the river on a ropeway.B 根据首字母和句意补全单词。
加里森管理会计12th,第七章答案
Exercise 7-5 (15 minutes)Sales ($1,650 per standard model glider × 10standard model gliders + $2,300 per customdesigned glider × 2 custom designed gliders) ........ $21,100 Costs:Direct materials ($462 per standard model glider ×10 standard model gliders + $576 per customdesigned glider × 2 custom designed gliders) ..... $5,772Direct labor ($19 per direct labor-hour × 28.5 directlabor-hours per standard model glider × 10standard model gliders + $19 per direct labor-hour× 32 direct labor-hours per custom designed glider× 2 custom designed gliders) ............................. 6,631 Supporting direct labor ($18 per direct labor-hour ×28.5 direct labor-hours per standard model glider× 10 standard model gliders + $18 per directlabor-hour × 32 direct labor-hours per customdesigned glider × 2 custom designed gliders) ..... 6,282Order processing ($192 per order × 3 orders) (576)Custom designing ($261 per custom design × 2custom designs) (522)Customer service ($426 per customer ×1 customer) ...................................................... 426 20,209 Customer margin .................................................... $ 8911. First-stage allocations of overhead costs to the activity cost pools:Distribution of Resource ConsumptionAcross Activity Cost PoolsDirect Labor Support Order Processing Customer Support OtherTotals100%100%Totals$350,000 200,000 Total cost .$550,0002. Computation of activity rates:Activity Cost Pools(a)Total Cost (b)Total Activity (a) ÷ (b) Activity RateDirect labor support ........ $155,000 10,000 DLHs $15.50 per DLH Order processing ............ $152,500 500 orders $305 per order Customer support ........... $127,500 100 customers $1,275 per customer3. Computation of the overhead costs for the Indus Telecom order:Activity Cost Pool(a)Activity Rate(b)Activity(a) × (b)ABC CostDirect laborsupport ............. $15.50 per DLH 50 DLHs* $ 775 Order processing .. $305 per order 1 orders 305 Customer support .$1,275 per customer 1 customer 1,275 Total .................... $2,355 *0.5 DLH per unit × 100 units = 50 DLHs4. The customer margin for Indus Telecom is computed as follows:Customer Margin—ABC AnalysisSales (100 units × $295 per unit) ................. $29,500 Costs:Direct materials ($264 per unit × 100 units) . $26,400Direct labor ($25 per DLH × 0.5 DLH per unit× 100 units) ............................................. 1,250Direct labor support overhead (see part 3above) (775)Order processing overhead (see part 3above) (305)Customer support overhead (see part 3above) ..................................................... 1,275 30,005 Customer margin ........................................... $( 505) P7-181. Under the traditional direct labor-hour based costing system,manufacturing overhead is applied to products using the predetermined overhead rate computed as follows:Estimated total manufacturing overhead cost Predetermined =overhead rate Estimated total direct labor-hours$2,200,000= = $20.00 per DLH110,000 DLHs**25,000 units of Xactive @ 1.4 DLH per unit + 75,000 units of thePathbreaker @ 1.0 DLH per unit = 35,000 DLHs + 75,000 DLHs = 110,000 DLHsConsequently, the product margins using the traditional approach would be computed as follows:Xactive Pathbreaker Total Sales ................................... $3,175,000 $6,675,000 $9,850,000 Direct materials .................... 1,620,000 3,825,000 5,445,000 Direct labor .......................... 455,000 975,000 1,430,000 Manufacturing overheadapplied @ $20.00 perdirect labor-hour ................ 700,000 1,500,000 2,200,000 Total manufacturing cost ...... 2,775,000 6,300,000 9,075,000 Product margin .................... $ 400,000 $ 375,000 $ 775,000 Note that all of the manufacturing overhead cost is applied to the products under the company’s traditional costing system.Problem 7-18 (continued)2. The first step is to determine the activity rates:Activity Cost Pools(a)TotalCost(b)Total Activity(a) ÷ (b)Activity RateSupporting directlabor .................. $797,500 110,000 DLHs $7.25 per DLH Batch setups ......... $680,000 400 setups $1,700 per setup Product sustaining . $650,000 2 products $325,000 per product *The Other activity cost pool is not shown above because it includes organization-sustaining and idle capacity costs that should not be assigned to products.Under the activity-based costing system, the product margins would be computed as follows:Xactive Pathbreaker Total Sales ................................ $3,175,000 $6,675,000 $9,850,000 Direct materials .................Direct labor ....................... 455,000 975,000 1,430,000 Supporting direct labor ...... 253,750 543,750 797,500 Batch setups ..................... 425,000 255,000 680,000 Product sustaining ............. 325,000 325,000 650,000 Total cost ......................... 3,078,750 5,923,750 9,002,500 Product margin ................. $ 96,250 $ 751,250 $ 847,500© The McGraw-Hill Companies, Inc., 2012. All rights reserved. Solutions Manual, Chapter 77Problem 7-18 (continued)3. The quantitative comparison is as follows:XactivePathbreaker Total Traditional Cost System(a) Amount (a) ÷ (c) %(b) Amount (b) ÷ (c) %(c) AmountDirect materials ......................... $1,620,000 29.8%$3,825,000 70.2%$5,445,000 Direct labor ............................... 455,000 31.8% 975,000 68.2% 1,430,000 Manufacturing overhead ............ 700,000 31.8%1,500,000 68.2%2,200,000 Total cost assigned to products .. $2,775,000 $6,300,000$9,075,000Activity-Based Costing System Direct costs:Direct materials ...................... $1,620,000 29.8% $3,825,000 70.2% $5,445,000 Direct labor ............................ 455,000 31.8%975,00068.2%1,430,000Indirect costs:Supporting direct labor ............ 253,750 31.8% 543,750 68.2% 797,500 Batch setups ........................... 425,000 62.5% 255,000 37.5% 680,000 Product sustaining .................. 325,000 50.0%325,000 50.0%650,000 Total cost assigned to products .. $3,078,750 $5,923,750Costs not assigned to products:Other ..................................... 72,500 Total cost ..................................$9,075,000Problem 7-18 (continued)The traditional and activity-based cost assignments differ for two reasons. First, the traditional system assigns all $2,200,000 of manufacturing overhead to products. The ABC system assigns only $2,127,500 of manufacturing overhead to products. The ABC system does not assign the $72,500 of Other activity costs to products because they represent organization-sustaining and idle capacity costs. Second, the traditional system uses oneunit-level activity measure, direct labor hours, to assign 31.8% of all overhead to the Xactive product line and 68.2% of alloverhead to the Pathbreaker product line. The ABC systemassigns 62.5% of Batch setup costs (a batch-level activity) to the Xactive product line and 37.5% to the Pathbreaker product line.The ABC system assigns 50% of Product sustaining costs (aproduct-level activity) to each product line.。
2019-2020学年南京市鼓楼区牛津译林七年级上册12月月考真题易错题 有答案
2019-2020学年七年级上册鼓楼区12月月考真题易错题一.单项选择【求真中学】1.I do not eat chocolate very often. Eating sweet food is not good for me.A.too manyB. many tooC. too muchD. much too2.--- Do you know the of the Confucius Institutes (孔子学院) around the word?--- More than 300, I guess.A. numberB. countryC. itemD. reason3. All the are from .A. men doctors; GermanyB. men doctors; GermanC. man doctors; GermanyD. man doctor; German4. Children knock Uncle Wang’s door. He gives them candy a treat.A. on; asB. in; asC. at; forD. on; with5. Halloween is much fun ____children.On that day people make lanterns ____pumpkin.A. for; out ofB. for; outC. with; out ofD. with; out6. --- National Day is important festival in China.--- Yes. We usually have a party ____the evening of October.A. at; inB. an; onC. a; inD. a; on7. --- do you water the flowers every day?---- I water the flowers twenty minutes every dayA. How oftenB. How soonC. How muchD. How long8. The bag of colorful lights the Christmas tree very pretty.A. makes; lookB. makes; looksC. make; looksD. make; look9. --- TV do you watch every day?--- About an hour.A. How manyB. How muchC. How oftenD. How long【实验中学】10.You can find out more information New York Radio this Saturday morning.A.at;onB.on;onC. on;/D.at; in11.Tom is fat. The doctor asks him to and .A. eat more; exercise moreB. eat less; exercise lessC. eat less; exercise moreD. eat more; exercise less12. I need a dress to my white shoes. Do you think this pink one me well?A. fit; fitsB. fit; matchesC. match; matchesD. match; fits13. There is a shop and two shops not far away from my school.A. sports; shoeB. sports; shoesC. sport; shoeD. sport; shoes14. Mum, my trainers are too small for me. Can I buy a new ?A. itB. oneC. pairD. trainers【29中,汇文中学】15.---Do in their hospital have a holiday on March 8?---No. But there is usually a big party for them.A.woman doctorsB. women doctorsC. women doctorD. woman teacher16.---Dad, could you help me__when the plane will take off on the Internet?A. find outB. get outC. look outD. take out17.---I have a toothache. I have to see a dentist.---You eat ___sweets, they have ____sugar.A.many too; too muchB. too many; too muchC. much too; much tooD. too much; much too18.Amy sometimes eats some snacks meals if she feels hungry.A. amongB. withC. betweenD. in19.We have a birthday the first seven days October in China.A. in; ofB. on; ofC. at; inD. during; on二.词语填空【求真中学】1.You are too fat, so you need to eat (little) meat and more vegetables.2.Little Jane plans (fly) her kite with her father next week.【实验中学】3.There are many small things we can do (make) the world a better place.4.Don’t knock on the (neighbour) doors like that.5.These (woman teacher) are from Shanghai.【29中,汇文中学】6.She with her best friend often (exercise) in the park at weekends.7.Could you pass the (knife) to us? We need them to make pumpkin lanterns.8.There are three glasses of lemon juice in the fridge. (对划线部分提问)_____ _____ lemon juice _____ _____ in the fridge?9.The old man usually treats the children with some candy and fruit (改为同义句) .The old man usually_____ the children some candy and fruit_____ _____ _____.10.他们想在那天装扮成猴子.They would like ____________________on that day.11.人们喜欢放烟花庆祝国庆节。
MATLAB数学实验课后答案
数学实验MATLAB参考答案(重要部分)P20,ex1(5) 等于[exp(1),exp(2);exp(3),exp(4)](7) 3=1*3, 8=2*4(8) a为各列最小值,b为最小值所在的行号(10) 1>=4,false, 2>=3,false, 3>=2, ture, 4>=1,ture(11) 答案表明:编址第2元素满足不等式(30>=20)和编址第4元素满足不等式(40>=10)(12) 答案表明:编址第2行第1列元素满足不等式(30>=20)和编址第2行第2列元素满足不等式(40>=10)P20, ex2(1)a, b, c的值尽管都是1,但数据类型分别为数值,字符,逻辑,注意a 与c相等,但他们不等于b(2)double(fun)输出的分别是字符a,b,s,(,x,)的ASCII码P20,ex3>> r=2;p=0.5;n=12;>> T=log(r)/n/log(1+0.01*p)T =11.5813P20,ex4>> x=-2:0.05:2;f=x.^4-2.^x;>> [fmin,min_index]=min(f)fmin =-1.3907 %最小值min_index =54 %最小值点编址>> x(min_index)ans =0.6500 %最小值点>> [f1,x1_index]=min(abs(f)) %求近似根--绝对值最小的点f1 =0.0328x1_index =24>> x(x1_index)ans =-0.8500>> x(x1_index)=[];f=x.^4-2.^x; %删去绝对值最小的点以求函数绝对值次小的点>> [f2,x2_index]=min(abs(f)) %求另一近似根--函数绝对值次小的点f2 =0.0630x2_index =65>> x(x2_index)ans =1.2500P20,ex5>> z=magic(10)z =92 99 1 8 15 67 74 51 58 4098 80 7 14 16 73 55 57 64 414 81 88 20 22 54 56 63 70 4785 87 19 21 3 60 62 69 71 2886 93 25 2 9 61 68 75 52 3417 24 76 83 90 42 49 26 33 6579 6 13 95 97 29 31 38 45 7210 12 94 96 78 35 37 44 46 5311 18 100 77 84 36 43 50 27 59>> sum(z)ans =505 505 505 505 505 505 505 505 505 505 >> sum(diag(z))ans =505>> z(:,2)/sqrt(3)ans =57.157746.188046.765450.229553.693613.85642.88683.46416.928210.3923>> z(8,:)=z(8,:)+z(3,:)z =92 99 1 8 15 67 74 51 58 4098 80 7 14 16 73 55 57 64 414 81 88 20 22 54 56 63 70 4785 87 19 21 3 60 62 69 71 2886 93 25 2 9 61 68 75 52 3423 5 82 89 91 48 30 32 39 6683 87 101 115 119 83 87 101 115 11910 12 94 96 78 35 37 44 46 5311 18 100 77 84 36 43 50 27 59P 40 ex1先在编辑器窗口写下列M函数,保存为eg2_1.m function [xbar,s]=ex2_1(x)n=length(x);xbar=sum(x)/n;s=sqrt((sum(x.^2)-n*xbar^2)/(n-1));例如>>x=[81 70 65 51 76 66 90 87 61 77];>>[xbar,s]=ex2_1(x)xbar =72.4000s =12.1124P 40 ex2s=log(1);n=0;while s<=100n=n+1;s=s+log(1+n);endm=n计算结果m=37clear;F(1)=1;F(2)=1;k=2;x=0;e=1e-8; a=(1+sqrt(5))/2;while abs(x-a)>ek=k+1;F(k)=F(k-1)+F(k-2); x=F(k)/F(k-1); enda,x,k计算至k=21可满足精度P 40 ex4clear;tic;s=0;for i=1:1000000s=s+sqrt(3)/2^i;ends,toctic;s=0;i=1;while i<=1000000s=s+sqrt(3)/2^i;i=i+1;ends,toctic;s=0;i=1:1000000;s=sqrt(3)*sum(1./2.^i);s,tocP 40 ex5c=[15 14 14 14 14 15 16 18 20 22 23 25 28 ...31 32 31 29 27 25 24 22 20 18 17 16];plot(t,c)P 40 ex6(1)clear;fplot('x^2*sin(x^2-x-2)',[-2,2])x=-2:0.1:2;y=x.^2.*sin(x.^2-x-2);plot(x,y)y=inline('x^2*sin(x^2-x-2)');fplot(y,[-2 2])(2)参数方法t=linspace(0,2*pi,100);x=2*cos(t);y=3*sin(t); plot(x,y)(3)x=-3:0.1:3;y=x;[x,y]=meshgrid(x,y);z=x.^2+y.^2;surf(x,y,z)(4)x=-3:0.1:3;y=-3:0.1:13;[x,y]=meshgrid(x,y);z=x.^4+3*x.^2+y.^2-2*x-2*y-2*x.^2.*y+6;surf(x,y,z)(5)t=0:0.01:2*pi;x=sin(t);y=cos(t);z=cos(2*t);plot3(x,y,z)(6)theta=linspace(0,2*pi,50);fai=linspace(0,pi/2,20);[theta,fai]=meshgrid(theta,fai); x=2*sin(fai).*cos(theta);y=2*sin(fai).*sin(theta);z=2*cos(fai);surf(x,y,z)(7)x=linspace(0,pi,100);y1=sin(x);y2=sin(x).*sin(10*x);y3=-sin(x);plot(x,y1,x,y2,x,y3)page41, ex7x=-1.5:0.05:1.5;y=1.1*(x>1.1)+x.*(x<=1.1).*(x>=-1.1)-1.1*(x<-1.1);plot(x,y)page41,ex8分别使用which trapz, type trapz, dir C:\MATLAB7\toolbox\matlab\datafun\ page41,ex9clear;close;x=-2:0.1:2;y=x;[x,y]=meshgrid(x,y);a=0.5457;b=0.7575;p=a*exp(-0.75*y.^2-3.75*x.^2-1.5*x).*(x+y>1);p=p+b*exp(-y.^2-6*x.^2).*(x+y>-1).*(x+y<=1);p=p+a*exp(-0.75*y.^2-3.75*x.^2+1.5*x).*(x+y<=-1);mesh(x,y,p)page41, ex10lookfor lyapunovhelp lyap>> A=[1 2 3;4 5 6;7 8 0];C=[2 -5 -22;-5 -24 -56;-22 -56 -16];>> X=lyap(A,C)X =1.0000 -1.0000 -0.0000 -1.00002.0000 1.0000 -0.0000 1.0000 7.0000Chapter 3%Exercise 1>> a=[1,2,3];b=[2,4,3];a./b,a.\b,a/b,a\bans =0.5000 0.5000 1.0000ans =2 2 1ans =0.6552 %一元方程组x[2,4,3]=[1,2,3]的近似解ans =0 0 00 0 00.6667 1.3333 1.0000%矩阵方程[1,2,3][x11,x12,x13;x21,x22,x23;x31,x32,x33]=[2,4,3]的特解Exercise 2(1)>> A=[4 1 -1;3 2 -6;1 -5 3];b=[9;-2;1];>> rank(A), rank([A,b]) %[A,b]为增广矩阵ans =3ans =3 %可见方程组唯一解>> x=A\bx =2.38301.48942.0213Exercise 2(2)>> A=[4 -3 3;3 2 -6;1 -5 3];b=[-1;-2;1];>> rank(A), rank([A,b]) ans =3ans =3 %可见方程组唯一解>> x=A\bx =-0.4706-0.2941Exercise 2(3)>> A=[4 1;3 2;1 -5];b=[1;1;1];>> rank(A), rank([A,b])ans =2ans =3 %可见方程组无解>> x=A\bx =0.3311-0.1219 %最小二乘近似解Exercise 2(4)>> a=[2,1,-1,1;1,2,1,-1;1,1,2,1];b=[1 2 3]';%注意b的写法>> rank(a),rank([a,b])ans =3ans =3 %rank(a)==rank([a,b])<4说明有无穷多解>> a\bans =110 %一个特解Exercise 3>> a=[2,1,-1,1;1,2,1,-1;1,1,2,1];b=[1,2,3]';>> x=null(a),x0=a\bx =-0.62550.6255-0.20850.4170x0 =11%通解kx+x0 Exercise 4>> x0=[0.2 0.8]';a=[0.99 0.05;0.01 0.95];>> x1=a*x, x2=a^2*x, x10=a^10*x>> x=x0;for i=1:1000,x=a*x;end,xx =0.83330.1667>> x0=[0.8 0.2]';>> x=x0;for i=1:1000,x=a*x;end,xx =0.83330.1667>> [v,e]=eig(a)v =0.9806 -0.70710.1961 0.7071e =1.0000 00 0.9400>> v(:,1)./xans =1.17671.1767 %成比例,说明x是最大特征值对应的特征向量Exercise 5%用到公式(3.11)(3.12)>> B=[6,2,1;2.25,1,0.2;3,0.2,1.8];x=[25 5 20]'; >> C=B/diag(x)C =0.2400 0.4000 0.05000.0900 0.2000 0.0100 0.1200 0.0400 0.0900 >> A=eye(3,3)-CA =0.7600 -0.4000 -0.0500 -0.0900 0.8000 -0.0100 -0.1200 -0.0400 0.9100 >> D=[17 17 17]';x=A\D x =37.569625.786224.7690%Exercise 6(1)>> a=[4 1 -1;3 2 -6;1 -5 3];det(a),inv(a),[v,d]=eig(a) ans =-94ans =0.2553 -0.0213 0.04260.1596 -0.1383 -0.22340.1809 -0.2234 -0.0532v =0.0185 -0.9009 -0.3066-0.7693 -0.1240 -0.7248-0.6386 -0.4158 0.6170d =-3.0527 0 00 3.6760 00 0 8.3766%Exercise 6(2)>> a=[1 1 -1;0 2 -1;-1 2 0];det(a),inv(a),[v,d]=eig(a) ans =1ans =2.0000 -2.0000 1.00001.0000 -1.0000 1.00002.0000 -3.0000 2.0000v =-0.5773 0.5774 + 0.0000i 0.5774 - 0.0000i-0.5773 0.5774 0.5774-0.5774 0.5773 - 0.0000i 0.5773 + 0.0000id =1.0000 0 00 1.0000 + 0.0000i 00 0 1.0000 - 0.0000i%Exercise 6(3)>> A=[5 7 6 5;7 10 8 7;6 8 10 9;5 7 9 10]A =5 76 57 10 8 76 8 10 95 7 9 10>> det(A),inv(A), [v,d]=eig(A)ans =1ans =68.0000 -41.0000 -17.0000 10.0000-41.0000 25.0000 10.0000 -6.0000-17.0000 10.0000 5.0000 -3.000010.0000 -6.0000 -3.0000 2.0000v =0.8304 0.0933 0.3963 0.3803-0.5016 -0.3017 0.6149 0.5286-0.2086 0.7603 -0.2716 0.55200.1237 -0.5676 -0.6254 0.5209d =0.0102 0 0 00 0.8431 0 00 0 3.8581 00 0 0 30.2887%Exercise 6(4)、(以n=5为例)%关键是矩阵的定义%方法一(三个for)n=5;for i=1:n, a(i,i)=5;endfor i=1:(n-1),a(i,i+1)=6;endfor i=1:(n-1),a(i+1,i)=1;enda%方法二(一个for)n=5;a=zeros(n,n);a(1,1:2)=[5 6];for i=2:(n-1),a(i,[i-1,i,i+1])=[1 5 6];enda(n,[n-1 n])=[1 5];a%方法三(不用for)n=5;a=diag(5*ones(n,1));b=diag(6*ones(n-1,1));c=diag(ones(n-1,1));a=a+[zeros(n-1,1),b;zeros(1,n)]+[zeros(1,n);c,zeros(n-1,1)] %下列计算>> det(a)ans =665>> inv(a)ans =0.3173 -0.5865 1.0286 -1.6241 1.9489-0.0977 0.4887 -0.8571 1.3534 -1.62410.0286 -0.1429 0.5429 -0.8571 1.0286-0.0075 0.0376 -0.1429 0.4887 -0.5865 0.0015 -0.0075 0.0286 -0.0977 0.3173 >> [v,d]=eig(a)v =-0.7843 -0.7843 -0.9237 0.9860 -0.9237 0.5546 -0.5546 -0.3771 -0.0000 0.3771-0.2614 -0.2614 0.0000 -0.1643 0.0000 0.0924 -0.0924 0.0628 -0.0000 -0.0628-0.0218 -0.0218 0.0257 0.0274 0.0257d =0.7574 0 0 0 00 9.2426 0 0 00 0 7.4495 0 00 0 0 5.0000 00 0 0 0 2.5505%Exercise 7(1)>> a=[4 1 -1;3 2 -6;1 -5 3];[v,d]=eig(a) v =0.0185 -0.9009 -0.3066-0.7693 -0.1240 -0.7248-0.6386 -0.4158 0.6170d =-3.0527 0 00 3.6760 00 0 8.3766>> det(v)ans =-0.9255 %v行列式正常, 特征向量线性相关,可对角化>> inv(v)*a*v %验算ans =-3.0527 0.0000 -0.00000.0000 3.6760 -0.0000-0.0000 -0.0000 8.3766>> [v2,d2]=jordan(a) %也可用jordanv2 =0.0798 0.0076 0.91270.1886 -0.3141 0.1256-0.1605 -0.2607 0.4213 %特征向量不同d2 =8.3766 0 00 -3.0527 - 0.0000i 00 0 3.6760 + 0.0000i>> v2\a*v2ans =8.3766 0 0.00000.0000 -3.0527 0.00000.0000 0.0000 3.6760>> v(:,1)./v2(:,2) %对应相同特征值的特征向量成比例ans =2.44912.44912.4491%Exercise 7(2)>> a=[1 1 -1;0 2 -1;-1 2 0];[v,d]=eig(a)v =-0.5773 0.5774 + 0.0000i 0.5774 - 0.0000i-0.5773 0.5774 0.5774-0.5774 0.5773 - 0.0000i 0.5773 + 0.0000id =1.0000 0 00 1.0000 + 0.0000i 00 0 1.0000 - 0.0000i>> det(v)ans =-5.0566e-028 -5.1918e-017i %v的行列式接近0, 特征向量线性相关,不可对角化>> [v,d]=jordan(a)v =1 0 11 -1 0d =1 1 00 1 10 0 1 %jordan标准形不是对角的,所以不可对角化%Exercise 7(3)>> A=[5 7 6 5;7 10 8 7;6 8 10 9;5 7 9 10]A =5 76 57 10 8 76 8 10 95 7 9 10>> [v,d]=eig(A)0.8304 0.0933 0.3963 0.3803-0.5016 -0.3017 0.6149 0.5286-0.2086 0.7603 -0.2716 0.55200.1237 -0.5676 -0.6254 0.5209d =0.0102 0 0 00 0.8431 0 00 0 3.8581 00 0 0 30.2887>> inv(v)*A*vans =0.0102 0.0000 -0.0000 0.00000.0000 0.8431 -0.0000 -0.0000-0.0000 0.0000 3.8581 -0.0000-0.0000 -0.0000 0 30.2887%本题用jordan不行, 原因未知%Exercise 7(4)参考6(4)和7(1), 略%Exercise 8 只有(3)对称, 且特征值全部大于零, 所以是正定矩阵. %Exercise 9(1)>> a=[4 -3 1 3;2 -1 3 5;1 -1 -1 -1;3 -2 3 4;7 -6 -7 0]>> rank(a)ans =3>> rank(a(1:3,:))ans =2>> rank(a([1 2 4],:)) %1,2,4行为最大无关组3>> b=a([1 2 4],:)';c=a([3 5],:)'; >> b\c %线性表示的系数ans =0.5000 5.0000-0.5000 1.00000 -5.0000%Exercise 10>> a=[1 -2 2;-2 -2 4;2 4 -2]>> [v,d]=eig(a)0.3333 0.9339 -0.12930.6667 -0.3304 -0.6681-0.6667 0.1365 -0.7327d =-7.0000 0 00 2.0000 00 0 2.0000>> v'*vans =1.0000 0.0000 0.00000.0000 1.0000 00.0000 0 1.0000 %v确实是正交矩阵%Exercise 11%设经过6个电阻的电流分别为i1, ..., i6. 列方程组如下%20-2i1=a; 5-3i2=c; a-3i3=c; a-4i4=b; c-5i5=b; b-3i6=0; %i1=i3+i4;i5=i2+i3;i6=i4+i5;%计算如下>> A=[1 0 0 2 0 0 0 0 0;0 0 1 0 3 0 0 0 0;1 0 -1 0 0 -3 0 0 0;1 -1 0 0 0 0 -4 0 0;0 -1 1 0 0 0 0 -5 0;0 1 0 0 0 0 0 0 -3;0 0 0 1 0 -1 -1 0 0;0 0 0 0 -1 -1 0 1 0;0 0 0 0 0 0 -1 -1 1];>>b=[20 5 0 0 0 0 0 0 0]'; A\bans =13.34536.44018.54203.3274-1.18071.60111.72630.42042.1467%Exercise 12>> A=[1 2 3;4 5 6;7 8 0];>> left=sum(eig(A)), right=sum(trace(A))left =6.0000right =6>> left=prod(eig(A)), right=det(A) %原题有错, (-1)^n应删去left =27.0000right =27>> fA=(A-p(1)*eye(3,3))*(A-p(2)*eye(3,3))*(A-p(3)*eye(3,3))fA =1.0e-012 *0.0853 0.1421 0.02840.1421 0.1421 0-0.0568 -0.1137 0.1705>> norm(fA) %f(A)范数接近0ans =2.9536e-013%Exercise 1(1)roots([1 1 1])%Exercise 1(2)roots([3 0 -4 0 2 -1])%Exercise 1(3)p=zeros(1,24);p([1 17 18 22])=[5 -6 8 -5];roots(p)%Exercise 1(4)p1=[2 3];p2=conv(p1, p1);p3=conv(p1, p2);p3(end)=p3(end)-4; %原p3最后一个分量-4roots(p3)%Exercise 2fun=inline('x*log(sqrt(x^2-1)+x)-sqrt(x^2-1)-0.5*x'); fzero(fun,2)】%Exercise 3fun=inline('x^4-2^x');fplot(fun,[-2 2]);grid on;fzero(fun,-1),fzero(fun,1),fminbnd(fun,0.5,1.5)%Exercise 4fun=inline('x*sin(1/x)','x');fplot(fun, [-0.1 0.1]);x=zeros(1,10);for i=1:10, x(i)=fzero(fun,(i-0.5)*0.01);end;x=[x,-x]%Exercise 5fun=inline('[9*x(1)^2+36*x(2)^2+4*x(3)^2-36;x(1)^2-2*x(2)^2-20*x(3);16*x(1)-x(1)^3-2*x(2)^2-16*x(3)^2]','x');[a,b,c]=fsolve(fun,[0 0 0])%Exercise 6fun=@(x)[x(1)-0.7*sin(x(1))-0.2*cos(x(2)),x(2)-0.7*cos(x(1))+0.2*sin(x(2))];[a,b,c]=fsolve(fun,[0.5 0.5])%Exercise 7clear; close; t=0:pi/100:2*pi; x1=2+sqrt(5)*cos(t); y1=3-2*x1+sqrt(5)*sin(t);x2=3+sqrt(2)*cos(t); y2=6*sin(t);plot(x1,y1,x2,y2); grid on; %作图发现4个解的大致位置,然后分别求解y1=fsolve('[(x(1)-2)^2+(x(2)-3+2*x(1))^2-5,2*(x(1)-3)^2+(x(2)/3)^2-4]',[1.5,2])y2=fsolve('[(x(1)-2)^2+(x(2)-3+2*x(1))^2-5,2*(x(1)-3)^2+(x(2)/3)^2-4]',[1.8,-2])y3=fsolve('[(x(1)-2)^2+(x(2)-3+2*x(1))^2-5,2*(x(1)-3)^2+(x(2)/3)^2-4]',[3.5,-5])y4=fsolve('[(x(1)-2)^2+(x(2)-3+2*x(1))^2-5,2*(x(1)-3)^2+(x(2)/3)^2-4]',[4,-4])%Exercise 8(1)clear;fun=inline('x.^2.*sin(x.^2-x-2)');fplot(fun,[-2 2]);grid on; %作图观察x(1)=-2;x(3)=fminbnd(fun,-1,-0.5);x(5)=fminbnd(fun,1,2);fun2=inline('-x.^2.*sin(x.^2-x-2)');x(2)=fminbnd(fun2,-2,-1);x(4)=fminbnd(fun2,-0.5,0.5);x(6)=2feval(fun,x)%答案: 以上x(1)(3)(5)是局部极小,x(2)(4)(6)是局部极大,从最后一句知道x(1)全局最小, x(2)最大。
课后练习答案 Unit7
agent optimist
estate fraction garbage outgrow reach stubborn
identify transfer
install
3. Arab Americans have tended to ________ identify more strongly with their Muslim heritage.
2. Cockroaches (蟑螂) have earned a bad reputation because they garbage . feed on _____. Fill in the following blanks with the words given below. Change the forms where necessary.
assemblage breakage reportage shrinkage
carriage marriage package stoppage storage wreckage
3. In August 1996 an expedition set out to examine the wreckage of Titanic and study the damage to its hull (船体). __________
5. The earliest European description of the American continent appeared in published form in 1505. in print 6. Children from age 6 to age 14 in Germany attend full-time school without payment. for free
新目标八年级上册英语Unit2能力提升专项训练试题及答案
新目标八年级上册英语Unit2能力提升专项训练试题及答案一、根据汉语提示完成句子(20分)1.我们想爬到山顶。
We want to_____ ______to the top of the hill.2. 玛丽在那做什么特别的事了吗?Did Mary do_____ ______there?3. 他爸爸每周去打三次高尔夫球。
His father plays golf_____ ______a week.4. 我从来不吃油炸食品,觉得不健康。
I never eat fried foods. They_____ ______be unhealthy.5. 海伦每月至少吃一次火锅。
Helen has hot pot_____ ______once a month.6.你父亲多久锻炼一次?_____ ______does your father ______?7. 他一周看三次电视。
He watches TV_____ _____ ____ _____.8.我哥哥每天都打篮球。
My brother plays basketball .9.你父亲多久锻炼一次?_______ ________your father exercise?10.我每天要做很多日常工作。
I do a lot of work .二、完形填空(10分)How often do you exercise? I’m sorry to say that I exercise __1__ than once a week. I know it is not a __2__ way of living for a 17-year-old boy. __3__, I really don’t have much time to exercise. I love __4__. I used to be (过去是) a member of the swimming team and the __5__ team in school. I __6__ every Monday and Thursday, and I played volleyball every day after school. But I __7__ the teams in September last year, because I had to spend much more time __8__ my study. Now I have little time to do sports or have fun. I __9__ watch TV or play computer gameseither.The summer holiday is coming. My father asks me to play sports with him. He thinks __10__ is very important. I hope I have time to exercise with him.( )1. A. less B. more C. better D. much( )2. A. bad B. healthy C. wrong D. different( )3. A. So B. Although C. And D. However( )4. A. housework B. books C. sports D. school( )5. A. basketball B. tennis C. golf D. volleyball( )6. A. played football B. went swimmingC. went onlineD. went to the movies( )7. A. joined B. disliked C. left D. waited( )8 A. on B. at C. about D. for( )9. A. hardly ever B. usually C. often D. always( )10. A. study B. food C. mind D. health三、根据句意及首字母或汉语提示完成单词。
《实用英语综合教程1》课后习题标准答案
《实用英语综合教程1》课后习题标准答案《英语综合教程1》课后习题答案第一单元:Text AExercise 1:1.No.There are many new things in cloolege life, such as b eing on my own, having Friday off ,and talking with friendl y people. I'll have to adjust to these.2.The first thing that came into my mind was thatIcould m ake any decisionon my own.3.Yes. All people, including both my teachers and classmat es, are nice and friendly to me.Exercise 2:1.D2.D3.D4.B5.AExercise 3:1.T2.F3.T4.F5.FExercise 4:1.Being on my own2.Friendly people3.Having Frida y offExercise 5:1—8:dfgebahcExercise 6:1. open an count 开立账户close an account with a bank 和银行结账a checking account 活期存款账户a savings account 储蓄存款账户2.adjust to a new life 适应新的生活adjust to life in a big city 适应大城市的生活adjust a watch 校准手表adjust an error 调整误差3.be located in a business center 坐落在商业中心located in the city center 坐落在城市中心located the shop 找到那商店的位置locate a place on the map 在地图上找到某位置4.be confused about the new ways 对新方法感到困惑a confused student 迷惑不解的学生confuse black with white 混淆黑白confuse the accounts 弄乱账目Exercise 7:1.handle2.account3.clue4.aspects5.savings6.check7.c ope8.adjusted9.located 10.confusedExercise 8:1.in a row2.slept in3.think about4.cope with5.added to6.had...off7.on her own8.adjust to9.Now that 10.fin d outExercise 9:1.It is expect that the chairman will speak todayThe chairman is expected to speak today.2.It is thought that she is the best singer that France ha s ever produced.She is thought to be the best singer that France has ever produced.3.It is said that the two men were hiding in the woods.The two men are said tobe hiding in the woods.4.It is reported that a strange flying object was seen ove r New Jersey last night.A strange flying object is reported to be seen over N ew Jersey last night.5.It is felt that very little was done to settle the matte r.Very little is felt to be done to settle the matter.6.It is konown that you were in town when this happened.You are known to have been in town when this happen ed.Exercise10:1.working2.to be , talking3.not turning on4.tak ing ,to get5.going/doc/dc19087393.html,ughing7.going8.sw imming9.living 10.carryingText BExercise1:1.My purpose of going to college is to improve myself and gain more knowledge so that I can work and serve my country better in the future.2.Yes. Some middle-aged people go to college to receive fu rther education。
EXERCISE 7
3
Exercises
cashier define determination fund mill significant stack tone toss
4
He piled up the glinting silver coins so the bank clerk
stacked cashier
1 2
She threw the beans into a pan of boiling water.
tossed
I could hear the cheerful sounds of church bells through tones the window. My uncle worked in a factory which produced steel.
Exercises
Now decide what word you can use to describe the sound of: (c) a heavy branch falling from a tree to the ground thud e.g. There was a dull thud as the box hit the floor. (d) an old bicycle on a bad road rattle e.g. The old taxi rattled down the street. (e) coins in your pocket jingle e.g. Just then there was the jingle of keys outside the door.
Exercises
innate legend mood outgoing perfectionist protective spine spoil 5 She is really friendly and likes meeting people, but I prefer to do things on my own. outgoing 6 Grandparents may sometimes allow their grandchildren everything they want and make them spoil selfish if they’re not careful. Gra ndparents m ay sometimes spoil their grandchildren if they’re not careful.
C#Exercise7
综合练习一(实验七)实验目的1.综合练习C#语言中重要的新功能2.锻炼综合运用各语言元素编程的能力3.检验对.NET和C#的宏观认识和把握4.创造性地运用C#和图形功能,开发友好的人机界面和应用程序二.实验内容1.判断下列命题是否正确,如果正确则在题后的【】中写入“对”,否则写“错”1)一种语言要移植到.NET中,它必须严格地符合通用语言规范(Common Language Specification)。
【1 】2)在C#中可以使用指针编程。
【1 】3)引用类型对象的所有信息全部都存放在堆区。
【0 】4)C#中的关键字new可以用作为运算符。
【0 】5)实例方法和静态方法都可以用委托(delegate)封装【1 】单选选择1)下列选项中能够充当枚举类型对象的基础类型的是 B 。
A. UnicodeB. Int32C. floatD. String2)如果一个类中没有重写String( )方法,那么,通过对象名调用String( )方法后得到的是B 。
A. 该对象的名B. 产生该对象的类型的名C. 该对象的索引的值D. 报告出错信息3)下列运算中, A 可能是非法的。
A. 将引用类型对象拆箱成值类型对象B. 将double对象显式地转换为int型对象C. 将char类型对象转换为int类型对象D. 将int类型对象转换为double类型对象4)对于Windows应用程序,下列命题中 C 是错误的。
A. C#的Windows应用程序是GUI标准的一种实现B. C#的Windows应用程序是事件驱动型的应用程序C. C#的Windows应用程序是基于浏览器的应用程序D. C#的Windows应用程序是完全面向对象的5)对于C#程序结构,下列命题中 D 是错误的。
A. 程序集是C#程序的物理结构,名空间是逻辑结构B. C#允许自定义的名空间C. 名空间可以和程序集同名D. 程序集是系统定义的,程序员不能修改简答题1)和类相比,接口和抽象类都没有完整的定义,但接口和抽象类也有许多不同之处,请列举三个你认为最重要的差别。
怎么读英语七年级下册第二单元
人教版七年级英语下册Unit 2up [ʌp] adv. 向上get up 起床;站起dress [dres] v.穿衣服n.连衣裙get dressed 穿上衣服brush [brʌʃ] v.刷刷净n.刷子tooth [tuːθ] n. (pl. teeth[tiːθ])牙齿shower [ ʃaʊə] n. & v. 淋浴n.淋浴器(间)take a shower 洗淋浴usually ju:ʒuəli] adv.通常地;一般地forty [ fɔ:(r)ti] num.四十wow [waʊ] interj.(表示惊奇或敬佩)哇;呀never [ nevə(r)] adv.从不;绝不early [ ɜːlɪ] adv. & adj.早(的)fifty [ fɪftɪ] num.五十job [dʒɒb], [dʒɑːb] n.工作;职业work [wɜːk] v. & n. 工作station [ steɪʃn] n.电(视)台;车站radio station 广播电台o clock [əklɒk], [əklɑ:k] adv.(表示整点)……点钟night [naɪt] n. 晚上;夜晚funny [ fʌnɪ] adj.奇怪的;滑稽好笑的exercise [ eksəsaɪz] v. & n. 锻炼;练习on weekends (在)周末best [best] adj.最好的adv.最好地;最group [gruːp] n.组;群half [hɑːf], [hæf] n. & pron. 一半;半数past [pɑːst],[pæst] prep.晚于;过(时间)adj.过去的quarter [ kwɔː(r)tə(r)] n.一刻钟;四分之一homework[ həʊmwɜː(r)k] n. 家庭作业do (one’s) homework 做作业run [rʌn] v. 跑;奔clean [kliːn] v.打扫;弄干净adj.干净的walk [wɔːk] n. & v. 行走;步行take a walk 散步;走一走quickly [ kwɪkli] adv. 很快地either [ aɪðə(r)], [ iːðə(r) ]adv.或者;也(用在否定词组后)either…or…要么……要么……;或者……或者……lot [lɒt], [lɑ:t] pron.大量;许多lots of 大量;许多sometimes[ sʌmtaɪmz] adv.有时taste [teɪst] v.有……的味道;品尝n.味道;滋味life [laɪf] n.生活;生命Rick [rɪk] 里克(男名)Jim [dʒɪm] 吉姆(男名)Scott [skɒt], [skɑ:t] 斯科特(男名)Tony [ təʊnɪ] 托尼(男名)知识梳理◆短语归纳1. what time 几点2. go to school 去上学3. get up 起床4. take a shower 洗淋浴5. brush teeth 刷牙6. get to 到达7. do homework 做家庭作业8. go to work 去上班9. go home 回家10. eat breakfast 吃早饭11. get dressed 穿上衣服12. get home 到家13. either…or…要么…要么…14. go to bed 上床睡觉15. in the morning/afternoon/evening 在上午/下午/晚上16. take a walk 散步17. lots of=a lot of 许多,大量18. radio station 广播电台19. at night 在晚上20. be late for=arrive late for 迟到◆用法集萃1. at + 具体时间点在几点(几分)2. eat breakfast/lunch/dinner 吃早饭/午饭/晚饭3. thirty/half past +基数词…点半4. fifteen/a quarter to +基数词差一刻到…点5. take a/an+名词从事…活动6. from…to…从…到…7. need to do sth 需要做某事◆典句必背1. —What time do you usually get up? 你通常几点钟起床?—I usually get up at six thirty. 我通常6:30起床。
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Exercise 6
(Be动词)
一、在下面的短文中填上恰当be动词。
I ______ a girl. My name _______ Mary. I ______ in Class 2, Grade 7. I ______ 12 years old. Here ______ my family photo. Look! These ______ my parents and those _______ my grandparents. This boy ______ my brother. He ________ 15 years old now. That ______ my cat, Mimi. It ______ very lovely.
二、在下面的题目中填上恰当的Be动词。
1. I ________from Australia.
2. She _______ a student.
3. Jane and Tom _________my friends.
4. My parents _______very busy every day.
5. I _______ at school.
6. He ________ at school.
7. We ________ students. 8. They ________ from China.
9. Yang Ling ________ eleven years old.
10. Where ________ your friends? 11. How old __________ you last year?
12. Which dog ________ yours? 13. Ten and two ________ twelve.
be动词用法歌:
我用am,你用are,is连接他,她,它。
单数名词用is,复数名词全用are。
变疑问,往前提,句末问号莫丢弃。
变否定,更容易,be后not莫忘记。
疑问否定任你变,句首大写莫迟疑。
一、用am, is, are 填空
1) I _____ a student. 2) You ____ a doctor. 3) ____she from Jinan?
4) _____you American? 5) It_____ a car. 6) They ____ cars
7) ____ your mother in China? 8) _____your friends in New York?
9) What ____her name? 10) These _____ buses. 11) Those _____oranges.
12) Where _____ her mother? 13) How old _____your teacher?
14) What class _____ you in?
1. I ______ a boy. ______ you a boy? No, I _____ not.
2. The girl______ Jack’s sister.
3. The dog _______ tall and fat.
4. The man with big eyes _______ a teacher.
5. ______ your brother in the classroom?
6. Where _____ your mother? She ______ at home.
7. How _______ your father?
8. Mike and Liu Tao ______ at school. 9. Whose dress ______ this?
10. Whose socks ______ they? 11. That ______ my red skirt. 12. Who ______ I?
13.The jeans ______ on the desk. 14.Here ______ a scarf for you.
15. Here ______ some sweaters for you. 16. The black gloves ______ for Su Yang.
17. This pair of gloves ______ for Yang Ling.
1.This is a coat.
否定句:
疑问句:
回答:
2.I am a student.
否定句:
疑问句:
回答:
3.You are a star.
否定句:
疑问句:
回答:
4.These are appless.
否定句:
疑问句:
回答:
I.名词所有格练习.
1. __________________________(李明的父母)work in a big hospital.
2. This is __________________________________(我妹妹的书)
3. ______________________________(王平和王明的父亲) is a hotel manager.
4. Is this ___________________________________(你妈妈的钢笔) ?
5. They are ___________________________________(Peter 和Sam的老师).
6. ___________________________________(我爸爸的桌子) are very new.
7. Please open ______________________________________(教室的门).
8. _________________________________(林红和张蔚的学校) is big and new.
9. ________________________________(John和Sally的母亲) are American.
10. ______________________________(Tony哥哥的电脑) is broken.
11. Are these ________________________________________(男生们的书包) ?
12. That is _______________________________________(Tom和李雷的教室).
汤姆的叔叔男孩的书包
那两个女孩的妈妈
露西和莉莉的自行车(各自所有)
露西和莉莉的卧室(共同拥有)。