SixFactorsThatWillRockGlobalCottonTrade影响全球棉花
COMAC航空科技英语等级考试B样题
COMAC航空科技英语等级考试B样题COMAC航空科技英语等级考试B1（技术类）样题Test Time：120 minutes部门_______________ 姓名____________ ⼯号____________Part I Listening （30%）Section 1 Conversation and Lecture（10%）Directions: In this section, you will hear a long conversation and a lecture. At the end of the conversation or the lecture, you will hear five questions. The conversation, the lecture and the questions will be spoken ONLY ONCE. After you hear a question, you must choose the best answer from the four choices.Conversation1. A) They get you directly to holiday destination.B) Their tickets can be bought on the internet.C) They offer excellent services to customers.D) They’re much cheaper than famous airlines.2. A) They have sprung up recently and become successful.B) They change prices on the basis of customers’ demand.C) They always offer travelers the extremely cheap flight.D) They do much advertising but few people ever watch it.3. A) By travelling before public holidays.B) By buying tickets a day in advance.C) By booking at the very last minute.D) By flying at peak time like Fridays.4. A) They try every possible means to reduce expenses.B) They charge different prices depending on demand.C) They don’t serve any food on any of their flights.D) They have increased the speed of their aero planes.5. A) They only offer cheap tickets online.B) They fail to offer satisfactory service.C) They spend little time on the ground.D) They fly to and from smaller airports.Lecture6. A) The 845m2 wing area is large enough to park 70 cars.B) The plane has the potential to carry 550 passengers.C) The tail is about as long as the Great Sphinx in Egypt.D) The two deck fuselage is as high as a 7-storey building.7. A) It is as economical to run as a common jet.B) It burns more fuel than other jumbo jets.C) It can fly an amazing 15,000 km non-stop.D) It can carry more fuel than other planes.8. A) Toulouse in France.B) England and Wales.C) All over the Europe.D) Spain and Germany.9. A) It is remarkably expensive.B) It is impressively efficient.C) It is a nation-wide project.D) It is extremely complicated.10.A) The expenses.B) The designing.C) The electronics.D) The cooperation.Section 2 Compound Dictation （10%）Directions: In this section, you will hear a passage TWICE. You have its script in the following, but with eleven blanks in it. You are required to fill in the first eight blanks with the exact words you have just heard. For last three blanks, you can either use the exact words you have just heard or write down the main points in your own words. Remember, there will be a pause for the last three blanks.Laurence Barron, President of Airbus China, defended the A380 superjumbo jet as its safety performance has been called into question.“The Qantas A380 suffered an (1) ______________ engine failure, a fairly rare event, which also damaged the aircraft itself. The aircraft performed as expected and (2) ______________ safely, so no, there is nothing wrong with the A380. It’s a (3)______________ aircraft.”Barron also says the engine issue will not (4) ______________ next summer’s scheduled delivery of the A380 to China Southern Airlines, the only (5) ______________ carrier to purchase the plane.Meanwhile, Barron explains that the lack of orders for its A350 aircraft, which is under development, from Chinese carriers is due to the country’s (6) ______________ planning structure.“The Chinese government, as you are well aware, works on a 5-year-plan basis, and they are about to (7) ______________ the 12th 5-year-plan which runs from 2011 to 2015. The A350 deliveries that we can offer are now in the what will become the 13th 5-year-plan period.”Eric Chen, Airbus China‘s Vice President, adds that the Chinese carriers’ timid (8) _____________ to the A350 is due to its competing product, Boeing’s 787.“Several years ago, Chinese airlines ordered more than 60 Boeing 787’s and for various reasons, airlines lack this kind of courage and determination to be a launching customer for a new program again. In other words, we are buying the bill for our rivals’ dilemma and consequences.”(9) __________________________________________________________________________________________________________________________________“I don’t really understand the world ‘challenge’. Our industry is challenging. There are lots of challenges but this is not a challenge, this is a competitor. (10) __________________________________________________________________________ Beverly Wyse, Vice President of Boeing’s 737 program, says Boeing is open to work with C919’s manufacturer.“I think (11) __________________________________________________________________________________________________________________________”Four Chinese airlines and two aircraft leasing companies have signed agreements to purchase 100 C919’s as launching costumers.Section 3 Listening and translating （10%）Directions: In this section you are going to hear five short passages. You will hear them ONLY ONCE. In each of these passages some of the sentences are already printed. You are required to translate the missing parts into Chinese. After each of the passages there will be a pause lasting one and a half minutes. The pause is intended for you to do the translation.1)The ARJ21-700 jetliner, China’s first self-designed aircraft, will undertake itsmaiden flight before the end of the year. COMAC chairman, Zhang Qingwei says this first homegrown regional jet has aroused great interest from aviation companies at home and abroad.”I just came back from the United States and Canada. ___________________________________________________________________________________________________________________________________________________________________________________________.”2)Nine top tier US manufacturing companies won competitive contracts to buildand supply the aviation system for China‘s new aircraft program, the C919.Airport infrastructure needs are filling opportunities in the US companies as well.___________________________________________________________________________________________________________________________________________________________________________________________________ 3)The Deputy Chief of the China’s Civic Aviation Administration, Xia Xinghua,says more cooperation is crucial for the Chinese side. “Firstly, we need to strengthen our cooperation on sustainable security development, expanding the relationship in a pragmatic way.________________________________________________________________________________________________________________________________________________________________________”4)The Transportation Secretary Ray LaHood said that the review would becomprehensive covering design, manufacturing and assembly of the Dreamliner.Michael Huerta of the Federal Aviation Administration said emphasis would be put on electrical systems and how these and the plane’s sophisticated mechanical systems interact._____________________________________________________________________________________________________________________________________________________________________________________.5)Though the tricycle arrangement may be most popular today, that was not alwaysthe case. The tail wheel undercarriage dominated aircraft design for the first four decades of flight and is still widely used on many small piston-engine planes.What makes this form of landing gear most attractive is its simplicity. Another potential advantage results from the fact that_____________________________ __________________________________________________________________________________________________________________________________ Part II Reading Comprehension（30%）Section 1 Skimming and Scanning (10%)Directions: In this section there are 10 incomplete statements. Based on the following passage, please complete the statements with the information given in the passage.Commercial aviation is an essential component of the global economy. The cost of aviation fuel is directly determined by the prevailing world price of oil, and it accounts for a major proportion of airplane operating costs. Several airline companies now add a fuel surcharge to the ticket cost of a commercial flight to compensate for the recent rapid rise in fuel costs. World oil prices are expected to remain high for several years. The prospect of sustained high aviation fuel prices could propel airline companies to seek alternative aviation fuels. Seeking alternative fuel could become paramount（最⾼的）for the airlineindustry should the peak-oil phenomenon actually occur.Breakthroughs and ResearchIt may become possible for super-cooled liquid hydrogen（氢）to eventually be used as an alternative fuel for some types of commercial airline service. Other alternative fuels may include high-density energy-storage technologies that result from breakthroughs in research in the areas of nanotechnology(纳⽶技术) and in high-temperature superconductivity(超导性). High-temperature superconductivity holds great promise for use in high-density energy-storage technology. Advances in nanotechnology could enable superconductive materials to eventually be manufactured at a cost that could justify their application in airliner propulsion. Electrical Storage and PropulsionEnergy stored in a superconductive storage technology could power electric motors that drive the identical propulsion fans that are found at the front-end of modern, “high-bypass” turbo-fan aircraft engines. Such fans provide up to 90% of the propulsive thrust of the turbo-fan engine. Each electrically powered propulsion fan may be driven by multiple (induction) lightweight electric motors during take-off. Some electric motors would “cut-out”under reduced power demand at cruising altitude so that the remaining motors will operate at higher efficiency (electric motors have poor part-load efficiency). Coanda fans may propel subsonic commercial aircraft that use high-density electrical storage technology. Such units were originally developed by physicist Henri Coanda and can operate at comparable efficiency and at comparable flight speeds as turbine-driven propulsion fans. Electrically powered aircraft that use either turbine propulsion fans or Coanda fans could be flown in thinner air at higher altitude (up to 65,000-feet) to reduce energy consumption (less drag on aircraft) on extended flights.The cooler air found at such altitudes could assist in keeping the superconductive energy storage systems functioning properly.Superconductive energy storage systems used in future commercial aircraft would likely be cooled by liquid nitrogen(氮). Both systems would need to be frequently recharged, which would likely be both energy-intensive as well as time consuming.It may be possible to design the energy storage systems along with their cooling systems to be removed and replaced during shorts layovers—such technology could help reduce the turn-around time of the aircraft. The introduction of superconductive energy storage systems in commercial aircraft in the long-term future would require that future airport terminals be equipped with power generation technology at or near the premises.Power GenerationThe number of electrically powered and hydrogen powered road and railway vehicles would likely increase during a post peak-oil period. Commuter aircraft that operate short-haul service could be powered by ethanol(⼄醇) or by hydrogen while future supersonic aircraft could use liquid hydrogen as fuel. The commercial aviation industry of the future (post peak oil) could likely require vast amounts of electric power to recharge superconductive energy storage systems, recharge liquid nitrogen cooling systems as well as to generate, compress and supercool large amounts of hydrogen.Modern commercial aircraft are energy intensive during take-off. Airports that serve metropolitan areas presently process continual processions of large long-distance aircraft during peak periods. Such aircraft could require between 300-Mw-hr and 1000-Mw-hr of power to undertake trans-oceanic flights at subsonic speed. The power requirements of a future electrically based commercial aviation industry could likely overwhelm the power generation industry of most developed nations. Major international airports may eventually need to generate electric power on-site to meet the energy needs of future fleets of electrically powered and hydrogen-fueled commercial aircraft. Airport power stations may be nuclear; use hydrogen fusion or be based on some other unconventional power generation technology that is still subject to research.Energy StorageThe ability to store large amounts of energy at or near major airports could gain importance during a post peak-oil period. Electric power could be purchased from the grid during their off-peak periods and put into short-term storage. Airport power stations that encounter off-peak periods could replenish(装满) airport energy storage systems that may include superconductive storage, flow batteries, hydraulic storage in hydroelectric dams in nearby mountains (coastal airports) or off-site pneumatic storage (subterranean salt domes that were emptied). Air that is exhausted from pneumatic storage systems may be sufficiently cold to assist in “replenishing” liquid nitrogen super-cooling systems.Power Regulation (Airports)Power stations that provide energy for air transportation use may have to be excluded from the regulatory framework. Most of the electrically powered airliners that will be recharged would be “foreign”owned, that is, the owners would be domiciled in adifferent jurisdiction(司法权) to where the aircraft would be recharged. The idea of regulators in one jurisdiction looking after the interests of parties who live, do business and pay taxes in another jurisdiction is quite ludicrous. Power stations that supply a future airline industry with electric power would need to be regulatory-free despite the “foreign”airline owners being “captive”customers. It would be possible for power to be supplied to a single airport by several small providers who compete against each other. Power providers and airline companies could negotiate deals, perhaps even on a daily basis. ConclusionFuture scientific breakthroughs are likely to occur in both nanotechnology and in superconductivity. High-density energy storage technologies could be the likely result and appear in the distant future. Electrically powered commercial aircraft that fly at subsonic speeds could appear in the future irrespective of whether or not peak-oil actually occurs. Alternative liquid fuels that are cost-competitive to fossil oil are also likely to appear and find applications in aviation. Large ground-effect aircraft （地效飞⾏器）that fly above water and that carry either passengers or freight between coastal cities are also likely appear in the future.1.The prospect of sustained high aviation fuel prices could propel airline companiesto seek _______________________.2.Breakthroughs in nanotechnology could enable _______________________ to beavailable in their application in airliner propulsion.3.Coanda fans were first developed by _______________________ .4._______________________ could be used to cool superconductive energystorage system used in future commercial aircraft.5._______________________, which operates short-haul service, could be poweredby ethanol(⼄醇) or by hydrogen.6.Future airport power stations may be_______________________; use hydrogenfusion or be based on some other unconventional power generation technology. 7.During a post peak-oil period, the ability to_______________________ at or nearmajor airports could gain importance.8.Power stations that provide energy for air transportation use are likely to be_______________________ from the regulatory framework.9.Electrically powered commercial aircraft that fly at _______________________speeds could appear in the future.10.Aircrafts flying above water and carrying either passengers or freight betweencoastal cities are called _______________________.Section 2 Reading Comprehension (10%)Directions: The following passage is followed by some questions. For each of them there are four choices marked A), B), C) and D). You should choose the best answer from the four choices.Living standards have soared during the twentieth century, and economists expect them to continue rising in the decades ahead. Does that mean that we humans can look forward to increasing Happiness?Not necessarily, warns Richard A. Easterlin, an economist at the University of Southern California, in his new book, Growth Triumphant: The Twenty-first Century in Historical Perspective. Easterlin concedes that richer people are more likely to report themselves as being happy than poorer people are. But steady improvements in the American economy have not been accompanied by steady increases in people’s self-assessments of their own Happiness.The explanation for this paradox(悖论) may be that people become less satisfied over time with a given level of income. In Easterlin’s word: “As incomes rise, the aspiration level does too, and the effect of this increase in aspirations is to vitiate (破坏) the expected growth in Happiness due to higher income.”Money can buy Happiness, Easterlin seems to be saying, but only if one’s amounts get bigger and other people aren’t getting more. His analysis helps to explain sociologist Lee Rainwater’s finding that Americans’perception of the income “necessary to get along” rose between 1950 and 1986 in the same proportion as actual per capita income. We feel rich if we have more than our neighbors, poor if we have less, and feeling relatively well-off is equated with being happy.Easterlin’s findings, challenge psychologist Abraham Maslow’s “hierarchy(等级) of wants” as a reliable guide to future human motivation. Maslow suggested that as people’s basic material wants are satisfied they seek to achieve nonmaterial or spiritual goals. But Easterlin’s evidence points to the persistence of materialism.“Despite a general level of affluence never before realized in the history of the world.” Easterlin observes, “Material concerns in the wealthiest nations today are as pressing as ever and the pursuit of material need as intense.” The evidence suggests there is no evolution toward higher order goals. Rather, each step upward on the ladder of economic development merely stimulates new economic desires that lead the chase ever onward.Needs are limited, but not greeds. Science has developed no cure for envy, so our wealth boosts our Happiness only briefly while shrinking that of our neighbors. Thus the outlook for the future is gloomy in Easterlin’s view. “The triumph of economic growth is not a triumph of humanity over material wants; rather, it is the triumph of material wants over humanity.”1.What does Easterlin warn in his new book?A)Humans can look forward to increasing happiness with soaring livingstandards.B)Humans might not be able to enjoy increasing happiness with soaring livingstandards.C)Richer people tend to report themselves as being happy more than poorerpeople do.D)Richer people tend to report themselves as being happy less than poorerpeople do.2.Which of the following statements may account for the paradox(悖论) mentionedin paragraph 3?A)People become less satisfied though the income rises over time.B)A general level of affluence never before realized in the history of the world.C)Though the American economy improved steadily, there isn’t a steadyincrease in people’s self-assessments of their own happiness.D)As incomes rise, there will be an increase in the aspiration level, which willhamper the expected growth in Happiness due to higher income.3.Whose finding is against the theory of “Hierarchy of wants”?A)Easterlin’s B) Maslow’s C) Rainwater’s D) Lee’s4.According to Easterlin, the outlook of the future of happiness is ________.A)bright B) sad C) unclear D) thrilling5.From the quotation in the end of the passage (paragraph 7), we can infer that___________?A)The triumph of economic growth results in more humanity.B)The triumph of economic growth results in more material wants.C)Humanity contributes more to the triumph of economic growth.D)Material wants contributes more to the triumph of economic growth.Section 3 Short Answer Questions (10%)Directions: Read the following passage and then answer the questions. The answer should not be more than 25 words.The maximum allowable weight for an aircraft is determined by design considerations. However, the maximum operational weight may be less than the maximum allowable weight due to such considerations as high-density altitude or high-drag field conditions caused by wet grass or water on the runway. The maximum operational weight may also be limited by the departure or arrival airport’s runway length.One important preflight consideration is the distribution of the load in the aircraft. Loading the aircraft so the gross weight is less than the maximum allowable is not enough. This weight must be distributed to keep the center of gravity (CG) within the limits specified in the POH or AFM.If the CG is too far forward, a heavy passenger can be moved to one of the rear seats or baggage can be shifted to a rear compartment. If the CG is too far aft, passenger weight or baggage can be shifted forward. The fuel load should be balanced laterally: the pilot should pay special attention to the POH or AFM regarding the operation of the fuel system, in order to keep the aircraft balanced in flight. Weight and balance of a helicopter is far more critical than for an airplane. With some helicopters, they may be properly loaded for takeoff, but near the end of a long flight when the fuel tanks are almost empty, the CG may have shifted enough for the helicopter to be out of balance laterally or longitudinally. Before making any long flight, the CG with the fuel available for landing must be checked to ensure it will be within the allowable range.Changes of fixed equipment may have a major effect upon the weight of the aircraft. The replacement of older, heavy electronic equipment with newer, lightertypes results in a weight reduction, which will probably cause the CG to shift and must be computed and annotated in the weight and balance record.Repairs and alteration are the major sources of weight changes. The A&P mechanic must compute the CG and record the new empty weight and EWCG in the aircraft weight and balance record.The A&P mechanic or repairman conducting an annual or condition inspection must ensure the weight and balance data in the aircraft records is current and accurate. It is the responsibility of the pilot in command to use the most current weight and balance data when operating the aircraft.Questions:1.What conditions might cause the operational weight of a plane to be less than themaximum allowable weight?2.What should be done if the CG is too far aft in an aircraft?3.Why is the weight and balance for a helicopter far more critical than for anairplane?4.According to the passage, what might lead to weight changes and cause the CG toshift in an aircraft?5.Who are responsible for recording and using the most current and accurate data ofthe weight and balance?Part III Translation (15%)Section 1 English-Chinese Translation (10%)Direction: In this section there are two passages in English. Please read these passages and translate the underlined parts into Chinese.Passage 1The airplane propeller consists of two or more blades and a central hub to which the blades are attached. 1) Each blade of an airplane propeller is essentially a rotating wing. As a result of their construction, the propeller blades are like airfoils and produce forces that create the thrust to pull, or push, the airplane through the air.The power needed to rotate the propeller blades is furnished by the engine. The engine rotates the airfoils of the blades through the air at high speeds, and the propeller transforms the rotary power of the engine into forward thrust.2) An airplane moving through the air creates a drag force opposing its forward motion. Consequently, if an airplane is to fly, there must be a force applied to it that is equal to the drag, but acting forward. This force is called “thrust.”Passage 2Aircraft flight control systems are classified as primary and secondary. 3) The primary control systems consist of those that are required to safely control an airplane during flight. Secondary control systems improve the performance characteristics of the airplane, or relieve the pilot of excessive control forces. Those included in the primary control systems are the ailerons, elevator (or stabilator), and rudder. Examples of secondary control systems are wing flaps and trim systems.Airplane control systems are carefully designed to provide a natural feel, and at the same time, allow adequate responsiveness to control inputs. 4) At low airspeeds, the controls usually feel soft and sluggish, and the airplane responds slowly to controlapplications. At high speeds, the controls feel firm and the response is more rapid.Movement of any of the three primary flight control surfaces changes the airflow and pressure distribution over and around the airfoil. These changes affect the lift and drag produced by the airfoil/control surface combination, and allow a pilot to control the airplane about its three axes of rotation.Design features limit the amount of deflection of flight control surfaces. For example, control-stop mechanisms may be incorporated into the flight controls, or movement of the control column and/or rudder pedals may be limited. The purpose of these design limits is to prevent the pilot from inadvertently overcontrolling and overstressing the aircraft during normal maneuvers.5) A properly designed airplane should be stable and easily controlled during maneuvering. Control surface inputs cause movement about the three axes of rotation. The types of stability an airplane exhibits also relate to the three axes of rotation. Section 2 Chinese-English Translation (5%)Direction: In this section there are five sentences in Chinese. Please translate them into English.1.太阳能动⼒飞机的平均飞⾏时速为70公⾥，暂时不会对商⽤飞机构成威胁。
高二英语经济预测单选题50题
高二英语经济预测单选题50题1. The GDP of a country measures the total value of all final goods and services produced within a country's borders _.A. in a given yearB. for several yearsC. since its establishmentD. in a future year答案：A。
解析：GDP（国内生产总值）是衡量一个国家在特定的一年里，在其境内生产的所有最终商品和服务的总价值。
选项A“in a given year” 在给定的一年）符合GDP的定义中关于时间的界定。
选项B“for several years” 好几年）不是GDP计算的常规时间跨度。
选项C“since its establishment”（自从它建立以来）这种时间界定不符合GDP的计算方式。
选项D“in a future year”（在未来的一年），GDP 是对已经发生的生产成果的衡量，不是未来的。
2. Inflation refers to _.A. a decrease in the general price levelB. an increase in the general price levelC. a stable price levelD. a random change in price level答案：B。
解析：通货膨胀（Inflation）指的是总体物价水平的上升。
选项A“a decrease in the general price level” 总体物价水平下降）是通货紧缩的概念。
选项C“a stable price level”（ 稳定的物价水平）与通货膨胀概念相悖。
选项D“a random change in price level”（物价水平随机变化）没有准确表达通货膨胀是物价上升这一概念。
小学上册第十四次英语第四单元测验卷(有答案)
小学上册英语第四单元测验卷(有答案)考试时间：80分钟（总分:100）B卷一、综合题(共计100题共100分)1. 填空题：I enjoy riding my ______ around the neighborhood.2. 填空题：When I help others, I feel ______ (满足). It’s important to be kind and ______ (乐于助人).3. 选择题：What is the largest organ in the human body?A. BrainB. HeartC. SkinD. Liver答案:C4. 听力题：Friction can slow down a ______.5. 填空题：The ancient Romans established ________ to provide public services.6. 选择题：What is the name of the fairy tale character who had long hair?A. CinderellaB. RapunzelC. Sleeping BeautyD. Snow White答案: B7. 填空题：I like to play ______ (视频游戏).8. 填空题：The frog croaks loudly during the ______ (春天).9. 听力题：The color of cabbage juice changes with pH; it can be red or ______.10. 选择题：What is 5 + 5?A. 8B. 9C. 10D. 1111. 填空题：The _____ (果树) produces sweet fruit.12. 填空题：My friend is very __________ (乐观的) about life.13. 选择题：What is 15 7?A. 6B. 7C. 8D. 9答案:C14. 听力题：The flower pot is ______ (colorful) and bright.15. 填空题：I love to watch ______ movies.16. 听力题：The _______ can be used for decoration.17. 选择题：What do you call a baby jackal?A. KitB. PupC. CalfD. Cub18. 听力题：The _______ of a wave can be described as its height.19. ssance was marked by advancements in ________ (科学). 填空题：The Rock20. 选择题：What is the name of the first spacecraft to fly by Jupiter?A. Pioneer 10B. Voyager 1C. Voyager 2D. Galileo21. 填空题：My mom loves to _______ (动词) to relax. 她觉得这个很 _______ (形容词).22. 选择题：What is a synonym for "fast"?A. SlowB. QuickC. LazyD. Tired23. 填空题：My mom is a wonderful __________ (家长) who teaches me well.24. 选择题：What do you call the sound a cow makes?A. MeowB. BarkC. MooD. Quack25. of Hammurabi is one of the oldest known ______ (法律). 填空题：The Cold26. 听力题：I see a ___ in the sky. (bird)27. 听力题：A ____ is often seen leaping gracefully through the air.28. 听力题：The chameleon changes ______ to blend in.29. 听力题：The dog is ______ at the squirrel. (barking)The flowers are ___. (colorful)31. 选择题：What do we call the person who teaches students?A. EngineerB. TeacherC. DoctorD. Chef答案:B32. 选择题：Which food is made from milk?A. BreadB. CheeseC. RiceD. Pasta答案: B33. 选择题：What do we call the act of making something happen?A. CreationB. InnovationC. ProductionD. Action答案:D34. 填空题：My brother loves __________ (学习) different instruments.35. 听力题：A mineral's ______ refers to the color of its powder when scraped on a surface.36. 听力题：They go to _____ (school/market) every day.37. 选择题：What is the capital of Brunei?A. Bandar Seri BegawanB. Kuala BelaitC. TutongD. Seria答案:A38. 听力题：The pizza is ______ and cheesy. (hot)The ____ is a favorite among children and loves to play in the grass.40. 听力题：The capital city of Sweden is __________.41. 听力题：The process of forming a precipitate occurs in a _______ reaction.42. 填空题：_____ (farming) can be both rewarding and challenging.43. 选择题：What is the capital city of Germany?A. MunichB. BerlinC. FrankfurtD. Hamburg44. 听力题：The children are _______ (drawing) pictures.45. 听力题：The _______ of a pendulum can be affected by air resistance.46. 听力题：When water freezes, it becomes ______.47. 选择题：What is the capital of Portugal?A. LisbonB. MadridC. ParisD. Rome答案:A48. 选择题：What do we call the process of changing from a liquid to a solid?A. MeltingB. FreezingC. BoilingD. Evaporating答案:B49. 选择题：What do you call a group of fish?A. SchoolB. FlockC. PackD. Pride答案: A50. 选择题：What is the chemical symbol for gold?A. AuB. AgC. PbD. Fe51. 听力题：She has ___ (ten) fingers.52. 填空题：The ______ (狐狸) is very clever and sly.53. 听力题：I like to _____ on weekends. (relax)54. 填空题：A chicken lays ______.55. 听力题：She is _______ (studying) for her exam.56. 填空题：My cat loves to chase after ______ (线).57. 填空题：I enjoy drawing _____ (树木) in art class.58. 选择题：What is the primary color of a pumpkin?A. GreenB. OrangeC. YellowD. Brown答案: B. Orange59. 听力题：The squirrel is very ___ (quick).The __________ (热带雨林) is rich in biodiversity.61. 听力题：The apple tree is _______ (full) of fruit.62. 选择题：What is the capital of Sweden?A. StockholmB. OsloC. HelsinkiD. Copenhagen答案: A. Stockholm63. 选择题：What do we call the hard outer layer of the Earth?A. CrustB. MantleC. CoreD. Lithosphere64. 填空题：The ________ (生态研究) reveals insights.65. 填空题：The crow is known for its black ______ (羽毛).66. 填空题：The _____ (birch) tree has beautiful bark.67. 听力题：The chemical symbol for francium is ______.68. 听力题：A saturated solution can no longer dissolve ______.69. 听力题：The __________ point is the temperature at which a solid becomes a liquid.70. 选择题：What do you call the person who studies stars and planets?A. BiologistB. GeologistC. AstronomerD. Physicist答案:CI have a toy _______ that makes me giggle.72. 选择题：What do we call a person who studies history?A. BiologistB. HistorianC. ScientistD. Researcher答案:B73. 听力题：My ______ likes to cook delicious food.74. 听力题：My mom makes _____ for breakfast. (pancakes)75. 填空题：The ________ grow in the garden.76. 选择题：Which sport uses a net and a ball?A. SoccerB. TennisC. BaseballD. Golf答案: B77. 填空题：在古代，________ (leaders) 的决策对国家未来有着重大影响。
高二英语经济趋势单选题50题
高二英语经济趋势单选题50题1. The GDP of a country is often considered as an important indicator of its economic _____.A. strengthB. weaknessC. problemD. solution答案：A。
解析：GDP（国内生产总值）通常被视为一个国家经济实力（strength）的重要指标。
选项B“weakness”（ 弱点）与GDP作为积极的经济衡量指标相悖；选项C“problem”（ 问题）不能准确描述GDP与经济的关系，GDP是一种衡量方式而不是问题本身；选项D“solution” 解决方案）也不符合GDP的性质，它不是一种解决方案。
2. Inflation means that the general level of prices for goods and services is _____.A. risingB. fallingC. stableD. disappearing答案：A。
解析：通货膨胀（Inflation）的定义就是商品和服务的总体价格水平在上升（rising）。
选项B“falling”（ 下降）是通货紧缩的情况；选项C“stable”（ 稳定）与通货膨胀概念不符；选项D“disappearing”消失）完全不符合价格水平与通货膨胀的关系。
3. High unemployment rate may lead to a decrease in _____.A. consumer spendingB. production capacityC. both A and BD. none of the above答案：C。
解析：高失业率意味着很多人没有工作也就没有收入，这会导致消费支出（consumer spending）减少，同时企业因为需求减少也会降低生产能力 production capacity），所以选项C正确。
2024年小学4年级第十一次英语第3单元全练全测(含答案)
2024年小学4年级英语第3单元全练全测(含答案)考试时间：90分钟（总分:100）A卷考试人：_________题号一二三四五总分得分一、综合题(共计100题共100分)1. 填空题：My sister loves to __________ (画画) in her free time.2. 听力题：The __________ is responsible for filtering waste in the body.3. 听力题：The bear lives in a _____ cave.4. ts can live in _____ (极端) climates. 填空题：Some pla5. 填空题：The _____ (butterfly) garden attracts pollinators.6. 选择题：What do you call the tallest building in the world?A. SkyscraperB. TowerC. MonumentD. Edifice答案：A7. 填空题：A rabbit’s teeth are always ______ (生长).8. 听力题：Chemical reactions can occur in ________ environments.9. 听力题：The library is very _______ (quiet).10. 填空题：My dad teaches me how to ________ (骑自行车) without training wheels. It was hard at first, but now I can do it ________ (很好).11. 选择题：What do we call the place where we learn?A. SchoolB. HospitalC. OfficeD. Farm答案:A12. 填空题：The _______ (Labor Movement) fought for workers’ rights and better conditions.13. 选择题：What is the capital of the Czech Republic?A. PragueB. BratislavaC. BudapestD. Ljubljana答案:A14. 听力题：A ______ is a measure of how much solute can dissolve in a solvent.15. 选择题：What do we call a baby cow?A. CalfB. KidC. LambD. Foal答案: A16. 选择题：What do we call the first ten letters of the alphabet?A. A to JB. A to ZC. A to MD. A to N17. 选择题：What instrument do you blow into to play?A. GuitarB. FluteD. Drums18. 听力题：The Earth's crust can be altered by human ______.19. 听力题：The chemical formula for gallium(III) oxide is _____.20. 填空题：The __________ (全球问题解决) requires teamwork.21. 填空题：I enjoy baking ________ (蛋糕) for my friends.22. 听力题：The element with atomic number is __________.23. 填空题：I wish I could fly like a ________ (鸟).24. 听力题：The children are _____ in the playground. (laughing)25. 选择题：What is the name of the famous ancient city in Italy?A. PompeiiB. RomeC. VeniceD. Florence答案:A. Pompeii26. 选择题：What do you call the main character in a story?A. ProtagonistB. AntagonistC. NarratorD. Author答案:A27. 选择题：How many senses do humans have?A. ThreeB. FourC. Five答案:C28. 听力题：The chemical formula for ammonium phosphate is ______.29. 填空题：The armadillo has a tough ______ (外壳).30. 听力题：The concept of ecological restoration focuses on revitalizing damaged ______.31. 选择题：What is the name of the galaxy we live in?A. Milky WayB. AndromedaC. WhirlpoolD. Triangulum32. 填空题：A rabbit has long ________________ (耳朵).33. 填空题：The __________ was an important trade route in ancient times. (丝绸之路)34. 填空题：The rabbit is a ______ (草食性动物).35. 听力题：A __________ is a large lake in North America.36. 填空题：My cat loves to curl up on a _______ (椅子).37. 听力题：The ______ helps us see light.38. 选择题：What do we celebrate on the Fourth of July in the United States?A. ThanksgivingB. Independence DayC. ChristmasD. Memorial Day答案:BA __________ is a type of chemical reaction where new substances are formed.40. trial Revolution changed how _______ were made. (商品) 填空题：The Indu41. 听力题：I love to _____ stories before bedtime. (hear)42. 听力题：The chemical symbol for platinum is ______.43. 听力题：A toy car moves when we _______ it.44. 填空题：Orchids are considered very _____ (美丽) flowers.45. 听力题：The _____ shows the positions of stars and constellations.46. 填空题：It is _______ to share with friends.47. 选择题：What do we call the study of the Earth?A. BiologyB. GeographyC. ChemistryD. History答案:B48. 填空题：The sloth hangs from branches with its _______ (爪子).49. 选择题：Which is the tallest animal?A. ElephantB. GiraffeC. LionD. Bear答案:B50. 听力题：The __________ can reveal the relationships between geological layers and formations.Combustion is a reaction that produces ________ and water.52. 选择题：How many colors are there in a rainbow?a. Fiveb. Sixc. Sevend. Eight答案:C53. 小鲸鱼) sings a beautiful song underwater. 填空题：The ___54. ts have _____ (药用) properties. 填空题：Some pla55. 听力题：I see _____ (clouds/stars) in the sky.56. 填空题：The sun shines ______ in the summer.57. 听力题：My brother is a ______. He enjoys modeling.58. 听力题：The main component of vegetable oil is ______.59. 填空题：The discovery of ________ has had significant implications for health and wellness.60. ssance was a period of renewed interest in __________. (艺术与科学)填空题：The Rena61. 听力题：The _____ (玩具) is colorful.62. 听力题：I see a ___ (car/truck) on the road.63. 选择题：What do we call a small, sweet fruit?A. BerryB. PeachC. AppleD. Banana64. 填空题：The ______ (草地) is lush and green.65. 选择题：What do we use to measure time?A. ScaleB. ClockC. RulerD. Thermometer66. 听力题：The _____ (铃铛) chimes softly.67. 填空题：My grandma loves to _______ (动词) in her garden. 她的花园很 _______ (形容词).68. 填空题：The first man-made satellite was named _______. (斯普特尼克)69. 听力题：In chemistry, a reagent is a substance used to cause a _____.70. 填空题：I love to watch ______ while I eat dinner.71. 选择题：What do you call a young horse?A. ColtB. FoalC. MareD. Stallion答案:B72. 选择题：What is the name of the largest desert in the world?A. Sahara DesertB. Arabian DesertC. Gobi DesertD. Kalahari Desert答案:A73. 听力题：The chameleon can be green or _______.74. 选择题：What color is the sky on a clear day?A. GreenB. BlueC. YellowD. Gray75. 填空题：The country famous for its chocolates is ________ (瑞士).76. 选择题：What is the name of the famous wizard in children's literature?A. GandalfB. DumbledoreC. MerlinD. Harry Potter答案: D77. 填空题：My favorite _________ (玩具) is the one that sings when you hug it.78. 填空题：A _____ is a large area of water that is deep.79. 听力题：The capital city of Saint Kitts and Nevis is __________.80. 填空题：My mom loves __________ (参与公益活动).81. 填空题：Each plant has a unique _____ (特征).82. 选择题：What is the capital of Brazil?A. Rio de JaneiroB. BrasiliaC. Sao PauloD. Salvador83. 听力题：We will go ______ for a walk after dinner. (outside)84. 选择题：What do you call a young dolphin?A. CalfB. PupC. KitD. Foal答案:A85. 听力题：A __________ is a large area of trees and wildlife.86. 听力题：The _______ of an object can be altered by changing its mass.87. 填空题：I also want to take my pet on ______. We could explore new places and meet other animals. It would be an adventure for both of us! I hope to find parks where pets are allowed to run and play freely.88. 选择题：What do you call the study of weather?A. GeographyB. MeteorologyC. ClimatologyD. Astronomy答案:B89. 填空题：I love to go ______ (滑雪) during winter vacations.90. 听力题：The formula for table salt is _______.91. 选择题：What is the color of a typical pepper?A. GreenB. YellowC. RedD. All of the above92. 听力题：We had ______ (fun) at the zoo.93. 听力题：I like to draw ______ (cartoons).94. 听力题：A __________ is a substance made up of only one type of atom.95. 听力题：A solution that can conduct electricity is called an ______ solution.96. 听力题：My sister is a ______. She loves to work with children.97. 选择题：What is the opposite of fast?A. QuickB. SlowC. SpeedyD. Rapid答案:B98. 听力题：The ____ is an animal that loves to dig.99. 填空题：They are _______ (去) to the beach this weekend.100. 选择题：What is the term for animals that eat both plants and meat?A. HerbivoresB. CarnivoresC. OmnivoresD. Insectivores答案:C。
国际经济学4
Copyright © 2003 Pearson Education, Inc.
Slide 4-11
ቤተ መጻሕፍቲ ባይዱ Model of a Two-Factor Economy
Resources and Output
• How is the allocation of resources determined?
– The reverse is also true.
Copyright © 2003 Pearson Education, Inc.
Slide 4-14
A Model of a Two-Factor Economy
Figure 4-6: An Increase in the Supply of Land
– Given the relative price of cloth and the supplies of land and labor, it is possible to determine how much of each resource the economy devotes to the production of each good.
Economies Empirical Evidence on the Heckscher-Ohlin Model Summary Appendix: Factor Prices, Goods Prices, and Input Choices
Copyright © 2003 Pearson Education, Inc.
Slide 4-10
A Model of a Two-Factor Economy
An increase in the price of cloth relative to that of
高三英语国际经济形势练习题20题(答案解析)
高三英语国际经济形势练习题20题(答案解析)1.The value of the dollar has been fluctuating recently.Which of the following is likely to be affected by this?A.ExportsB.ImportsC.Domestic productionD.None of the above答案解析：A 和B。
美元价值波动会影响进出口。
当美元升值时，进口商品相对便宜，出口商品在国际市场上价格相对较高，可能导致出口减少；当美元贬值时，情况相反。
C 选项国内生产不一定直接受美元价值波动影响。
本题考查经济词汇和逻辑推理。
2.In international trade,what is a tariff?A.A tax on importsB.A subsidy for exportsC.A restriction on domestic consumptionD.None of the above答案解析：A。
关税是对进口商品征收的税。
B 选项补贴出口不是关税。
C 选项限制国内消费不是关税的定义。
本题考查贸易相关词汇。
3.If a country's currency appreciates,what will happen to its exports?A.IncreaseB.DecreaseC.Remain unchangedD.It depends on other factors答案解析：B。
一国货币升值，其出口商品在国际市场上价格相对较高，可能导致出口减少。
A 选项增加错误。
C 选项保持不变错误。
D 选项虽然有其他因素影响，但一般情况下货币升值出口会减少。
本题考查货币与贸易的关系以及逻辑推理。
4.Which of the following is an example of a trade barrier?A.QuotasB.SubsidiesC.TariffsD.All of the above答案解析：D。
高一经济现象英语阅读理解30题
高一经济现象英语阅读理解30题1<背景文章>The market economy is an economic system in which decisions regarding production, distribution, and consumption are guided by the interactions of supply and demand. In a market economy, businesses and individuals are free to make their own economic decisions.One of the key characteristics of a market economy is the role of competition. Competition among businesses leads to lower prices, better quality products, and greater efficiency. When businesses compete, they are forced to find ways to produce goods and services more efficiently in order to lower costs and offer better prices to consumers.Another important aspect of a market economy is the price mechanism. Prices play a crucial role in allocating resources. When the demand for a particular good or service increases, its price tends to rise. This signals to producers that there is a greater need for that product, and they respond by increasing production. Conversely, when the demand for a product falls, its price drops, and producers reduce production.The market economy also promotes innovation. Businesses are constantly looking for new ways to improve their products and processes in order to gain a competitive edge. This leads to the development of newtechnologies and better ways of doing things.In addition, a market economy allows for a wide range of choices for consumers. With many businesses competing for their business, consumers have the opportunity to choose from a variety of products and services at different prices and quality levels.1. One of the key characteristics of a market economy is _______.A. government controlB. lack of competitionC. the role of competitionD. fixed prices答案：C。
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Corn 玉米：
435
Soybeans 大豆： 528
Cotton 棉花： 200
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Factor #2: Battle for Acreage is Now Worldwide – Cotton versus Food
2007/08 U.S. carryout of 10.200 million
bales = 16.7% of world carryover. 2007/08年度美国期末库存为1020万包（222 万吨），占全球的16.7％。
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This means that global production growth
outpaced the growth in consumption. 这意味着全球棉花产量的增长超过了需求的 增长。
Hale Waihona Puke Each supply shock had limited impact; U.S.
oversupply always meant ample supply. 每次供应短缺对市场的影响都很有限，因为 美棉供应过剩意味着全球供应充足。
This provided the world with a supply cushion for the last eight years. 这在过去8年里为全球棉花供应提供了保障。
5
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Factor #1: The End of U.S. Surplus
6
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Factor #1: The End of U.S. Surplus
2006/07 U.S. carryout of 9.479 million bales
= 15% of world carryover. 2006/07年度，美国期末库存为947.9万包 （206万吨），占全球的15％。
8,000
6,000
4,000
2,000
0 1983/84 1985/86 1987/88 1989/90 1991/92 1993/94 1995/96 1997/98 1999/00 2001/02 2003/04 2005/06 2007/08 2009/10
美国期末库存变化图
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Factor #1: The End of U.S. Surplus
The 2000 U.S. Farm Bill ushered in a period
of record U.S. cotton production. 美国2000年农业法案导致美棉产量创下历史 最高纪录。
Six Factors That Will Rock Global Cotton Trade 影响全球棉花贸易的六大因素
By Ed Jernigan 艾德•乔尼根 Managing Director Asia 亚洲董事总经理
FC Stone 福四通 Kansas City, Missouri USA 美国密苏里州堪萨斯市
SIX FACTORS ARE SET TO ROCK GLOBAL COTTON TRADE IN THE YEARS AHEAD. 今后全球棉花贸易将受六大因素影响
3
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Factor #1 第一个因素
The End of U.S. Cotton Surplus 美棉供应过剩将会结束
Biofuels used 7% of world oilseeds in 2008. 2008年生物燃料使用了全球7％的油料 作物。
15
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Factor #2: Battle for Acreage is Now Worldwide – Cotton versus Food
Percentage of production costs related to fuel,
fertilizer and chemicals. 燃料、化肥和农药占 下列作物生产成本的比重：
Corn 玉米 ：56.7%
Wheat 小麦：49.3% Cotton 棉花：35.4% Rice 水稻 ：47.4%
Cotton now has to compete for acreage in most major-producing regions. 在多数主产区，棉花必须要和其他作物争地。
Acreage is determined by profitability, not government benefits. 决定种植面积的因素是收益，而非政策。
After decades, the surplus in global food stocks
is gone. 经过数十年，全球粮食库存过剩已经消失。
Driven by:这是因为：
Rise of China, India and Others Increasing Population Rise Ethanol and Biofuels Climate Change Growing Water Scarcity
Pushed breakeven sharply higher; 这使保本价大幅提高；
Profitability now requires record yields. 现在实现收益只能依靠单产创新高。
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Factor #2: Battle for Acreage is Now Worldwide – Cotton versus Food
Fertilizer costs have exploded over 100 percent in 2008. 2008年化肥成本暴涨一倍以上
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World cotton trade is set to undergo the most dramatic changes in over 100 years.
全球棉花贸易将出现100多年来的最大变化。
Under this profitability scenario, why would U.S. growers want to grow cotton?
在这个收益背景下，美国棉农有何理 由继续种植棉花呢？
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Corn 玉米： 365 Soybeans 大豆： 156 Cotton 棉花： 141
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Factor #2: Battle for Acreage is Now Worldwide – Cotton versus Food
It is gone! 美棉库存就此彻底消失！
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Factor #1: The End of U.S. Surplus
U.S Ending Stocks
12,000
10,000
in thousands of 480 lb. bales
Factor #1: The End of U.S. Surplus
This is coming to an end: 这种情况将会结束
2008/09 = 3.2 2008/09年度美国期末库存预计为320万包
（70万吨）
2009/10 = 1.0 or less 2009/10年度为100万包（22万吨)或更低
Factor #2: Battle for Acreage is Now Worldwide – Cotton versus Food
Brazil: Profitability of 2009/10 Crops 巴西：2009/10年度作物收益
Prices as of July 30, 2008: 截至2008年7月30日的收益：
USA: Profitability of 2009/10 Crops 美国：2009/10年作物收益
Prices as of July 30, 2008 – Average profit per acre in cotton belt states: 截至2008年7月30日，棉花产区其他作物每英亩 平均收益（单位：美元/英亩）
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Cotton is the underperformer of the agricultural
sector; the single worst performing commodity
since 2001. 棉花是农产品中表现较差的，也是2001年以来惟 一一个表现最差的品种。
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