____,we went home.A. Our homework finishedB. Our homework having been finishedC. Our homework finishingD. Our homework been finished

You say you spent three months completely cut-off from the _______ world. What steps did you take to do that?(你说，你有三个月完全脱离电子虚拟世界，你是如何实施的？)A. true B. real C. practical D. virtual

aspectfactorconstrueobtainoppositeHappy and unhappy people____ life events and daily situations differently.Those whose suffering may bring them closer to____ a life goal may be very happy people.While many people think that older people are unhappier than younger people, it would seem that the____ is true.Money affects every____ of our lives.Stress is a(n)____ in many long-­term illnesses.

9.( 3.0 分 ) [ 单选题 ] When interviewers ask about you previous contributions they want to learn whether you have the skills required to do the job . A 面试官经常会问起你以前工作和公司的一些情况以便决定你是否是他们所需要的人选 B 当面试官询问你以往做出的贡献时，他们是想了解你是否具备从事该项工作所需的技能。 C 面试官往往都很想了解你以往所做出的贡献，这样他们就可以为你安排一个合适的岗位。

POWERING THE PLANETA Despite modern society's heavy dependence on fossil fuels for energy, most people are aware that the supply of these fuels is finite. As oil and other fossil fuels become more costly and difficult to find, researchers are looking at alternative energy sources, including solar, wind, and even nuclear power. But which substitute—if any—is the right one? SolarB Solar panels catch energy directly from the sun and convert it into electricity. One of the world's largest solar power stations is in the Indian state of Tamil Nadu, where more than 2.5 million solar panels have the capacity to generate enough power for 750, 000 people. But unlike the burning of fossil fuels, the process used to create all that solar energy produces no emissions.C Today, however, solar power provides less than 2 percent of the world's energy, primarily because the cost of the panels is still very high. But price is only one issue. Clouds and darkness also cause solar panels to produce less energy. This requires that additional power sources (such as batteries) be available.D Some scientists think the solution to this problem can be found in space, which is the ideal place to gather energy from the sun. With no clouds and no nighttime, a space-based solar power station could operate constantly. These stations would send the power back to Earth, which could then be turned into electricity for consumption. Advocates of solar space stations say this technology would initially require a lot of money, but eventually it could provide continuous, clean energy that would be cheaper than other fuels. Also, unlike other energy sources, solar power from space would last as long as the sun shines, and would guarantee everyone on Earth all the energy they need.WindE Wind—the fastest-growing alternative energy source—is another way of collecting energy from the sun. Wind is caused by the sun's heat rather than its light. Therefore, unlike solar power, wind power works well even on cloudy days.F All over the world, incentives designed to decrease the dependence on oil and coal have led to a steep increase in wind-powered energy. Today, Asia leads the world in wind power, producing around 230, 000 megawatts, the equivalent of 230 large coal-powered plants. Europe produces nearly 180, 000 megawatts. North America remains a distant third, at 105, 000.G Despite its successes, some people are protesting wind-power development, saying the turbines are both noisy and ugly. Just outside England's Lake District—a protected national park—a dozen existing wind towers are due to be removed. "This is a high-quality landscape, " says one local homeowner. "They shouldn't be putting those things in here."H There are other challenges, too. If the wind doesn't blow, the turbines are not able to produce adequate energy. As a result, other power sources are needed. In contrast, a strong wind can create too much power. In cases like this, the energy company must sell the extra power at a much-reduced rate, which is not good for business.I What's needed for both wind and solar is a way to store a large energy surplus. However, most systems are still decades away from making this a reality. On the plus side, both wind and solar power enable people to generate their own energy where they live: people can have their own windmills or solar panels, with batteries for calm days.NuclearJ In the 1970s, nuclear power was seen as the main energy alternative. Nuclear power produces vast amounts of electricity more cheaply than gas or coal, with no carbon emissions. For a number of years in the 1980s and '90s, however, use of nuclear power declined due to accidents, concerns about nuclear waste storage and disposal, and high construction costs.K Today, times are changing. Worldwide, about 450 plants generate 11 percent of the planet's electric power, and some countries have invested heavily in nuclear energy. France, for instance, gets three-quarters of its electricity from nuclear power, the highest percentage of any country. China has started to build one or two new plants a year, and India has also begun to utilize nuclear energy on a large scale.L However, there are still concerns about the safety of nuclear power, as seen, for example, at the Fukushima nuclear power plant in Japan. The country had to close the nuclear reactors at Fukushima when the plant was hit by a tsunami and, as a consequence, began releasing substantial amounts of radioactive materials. Many still believe, however, that nuclear power is one of the future's greenest energy alternatives.M In the end, are any of these sources alone the answer to our current energy problems? The short answer is no, but used in some combination—along with other power sources—we may find ways to reduce and eventually eliminate our dependence on fossil fuels.(1)What is this reading mainly about? A.possible replacements for fossil fuelsB.the various causes of the global energy crisisC.the benefits of solar power over other alternative energy sourcesD.problems caused by our overdependence on fossil fuels(2)Which of these statements about solar energy is stated in the text? A.Solar is currently the biggest contributor to the world's energy.B.Solar energy is cheap to produce due to the low price of solar panels.C.Solar space stations could be the solution to the energy crisis.D.Solar energy can have a harmful effect on the environment.(3)What is NOT mentioned as a disadvantage of wind power? A.Strong winds can produce too much power.B.Strong winds can damage the turbines.C.The turbines can create a lot of noise.D.Some people consider the turbines to be ugly.(4)Which country gets most of its power from nuclear power? A.FranceB.IndiaC.JapanD.China(5)Which question is closest in meaning to In the end, are any of these sources alone the answer to our current energy problems? (paragraph M)A.Is there an energy source that can solve all of our energy problems on its own? B.Can our current energy problems be solved by making sure we stop burning fossil fuel? C.an we solve our energy problems by using all the alternative energy sources together? D.Is finding an alternate to fossil fuels the only way to solve our energy problems?

E Like most people，I've long understood that I will be judged by my occupation，that my profession is a standard people use to see how smart or talented I am.Recently，however，I was disappointed to see that it also decides how I'm treated as a person. Last year I left a professional position as a small­town reporter and took a job waiting tables.As someone paid to serve food to people，I had customers say and do things to me I suspect they'd never say or do to their most casual acquaintances.One night a man talking on his cell phone waved me away，then asked me back with his finger minutes later，complaining he was ready to order and asking where I'd been. I had waited tables during summers in college and was treated like a peon(勤杂工)by plenty of people.But at 19 years old，I believed I deserved inferior treatment from professional adults.Besides，people responded to me differently after I told them I was in college.Customers would joke that one day I'd be sitting at their table，waiting to be served. Once I graduated，I took a job at a community newspaper.From my first day，I heard a respectful tone from everyone who called me.I assumed this was the way the professional world worked. I soon found out differently.I sat several feet away from an advertising sales representative with a similar name.Our calls would often get mixed up and someone asking for Kristen would be transferred to Christie.The mistake was immediately evident. Perhaps it was because money was involved，but people used a tone with Kristen that they never used with me. My job title made people treat me politely.So it was a shock to return to the restaurant industry. It's no secret that there's a lot to put up with when waiting tables，and fortunately，much of it can be easily forgotten when you pocket the tips.The service industry，by definition，exists to satisfy others' needs.Still，it seemed that many of my customers didn't get the difference between server and servant. I'm now applying to graduate school，which means someday I'll return to a profession where people need to be nice to me in order to get what they want.I think I'll take them to dinner first，and see how they treat someone whose only job is to serve them. (1)The author was disappointed to find that ______. A．one's position is used as a standard to measure one's intelligence B．talented people like her should fail to get a respectable job C．one's occupation affects the way one is treated as a person D．professionals tend to look down upon manual waitresses (2)What does the author intend to say by the example in the second paragraph? A．Some customers simply show no respect to those who serve them. B．People absorbed in a phone conversation tend to be absent­minded. C．Waitresses are often treated by customers as casual acquaintances. D．Some customers like to complain because of the waitress' poor service. (3)How did the author feel when waiting tables at the age of 19? A．She felt it unfair to be treated as a mere servant by professional. B．She felt badly hurt when her customers regarded her as a peon. C．She was embarrassed each time her customers joked with her. D．She found it natural for professionals to treat her as inferior. (4)The underlined sentence in Paragraph 7 means “______”． A．those who satisfy others' needs are sure to be looked down upon B．those working in the service industry shouldn't be treated as servants C．those serving others have to put up with rough treatment to earn a living D．the majority of customers tend to look on a servant as server nowadays

请指出对于这篇文章以下哪个描述是正确的 《Hemicellulose: Structure, chemical modification, and application》（需要在PDF中查看）Science Direct数据库 A. Received 4 November 2022B. Revised 11 March 2023C. Accepted 11 March 2023D. Available online 14 March 2023

ㅤGrizzly bears，which may grow to about 2.5 m long and weigh over 400 kg，occupy a conflicted corner of the American psyche-we revere（敬畏） them even as they give us frightening dreams.Ask the tourists from around the world that flood into Yellowstone National Park what they most hope to see，and their answer is often the same：a grizzly bear.ㅤ"Grizzly bears are re-occupying large areas of their former range，" says bear biologist Chris Servheen.As grizzly bears expand their range into places where they haven't been seen in a century or more，they're interestingly being sighted by humans.ㅤThe western half of the U.S.was full of grizzlies when Europeans came，with a rough number of 50，000 or more living alongside Native Americans.By the early 1970s，after centuries of cruel and continuous hunting by settlers，600 to 800 grizzlies remained on a mere 2 percent of their former range in the Northern Rockies.In 1975，grizzlies were listed under the Endangered Species Act.ㅤToday，there are about 2 ，000 or more grizzly bears in the U.S.Their recovery has been so successful that the U.S.Fish and Wildlife Service has twice attempted to delist grizzlies，which would loosen legal protections and allow them to be hunted.Both efforts were overturned due to lawsuits from conservation groups.For now，grizzlies remain listed.ㅤObviously，if precautions（ 预防） aren't taken，grizzlies can become troublesome ，sometimes killing farm animals or walking through yards in search of food.If people remove food and attractants from their yards and campsites，grizzlies will typically pass by without trouble.Putting electric fencing around chicken houses and other farm animal quarters is also highly effective at getting grizzlies away."Our hope is to have a clean，attractant-free place where bears can pass through without learning bad habits，" says James Jonkel，longtime biologist who manages bears in and around Missoula.（1）How do Americans look at grizzlies？ ____ A．They cause mixed feelings in people.B．They should be kept in national parks.C．They are of high scientific value.D．They are a symbol of American culture.（2）What has helped the increase of the grizzly population？ ____ A．The European settlers' behavior.B．The expansion of bears' range.C．The protection by law since 1975.D．The support of Native Americans.（3）What has stopped the U.S.Fish and Wildlife Service from de-listing grizzlies？ ____ A．The opposition of conservation groups.B．The successful comeback of grizzlies.C．The voice of the biologists.D．The local farmers' advocates.（4）What can be inferred from the last paragraph？ ____ A．Food should be provided for grizzlies.B．People can live in harmony with grizzlies.C．A special path should be built for grizzlies.D．Technology can be introduced to protect grizzlies.

Passage One-|||-Questions 13 to 15 are based on the passage you have just heard.-|||-13.A)He was born in Switzerland. B)He went to school in Germany.-|||-C)He stedied religion at coliege D)He was a professor of engineering.-|||-14.A)He invented the refrigerator B)He produced ice boxes.-|||-C)He won the Nobel Prize. D)He researched food safety.-|||-15.A)He had strong religious beliefs to guide his work.-|||-B)He found hope and remained strong in difficult times.-|||-C)He clearly knew what he wanted for himself.-|||-D)He firmly refused to depend too much on his father.

Despite modem society's heavy dependence on fossil fuels for energy， most people are aware that the supply of these fuels is finite （有限的）． As oil， in particular， becomes more costly and difficult to find， researchers are looking at alternative energy sources， including solar， wind， and even nuclear power． But which is the right one？ Solar panels catch energy directly from the sun and convert it into electricity． One of the world's largest solar power stations is located near Leipzig， Germany， where more than 33，000 solar panels generate enough energy to power about 1，800 homes． But unlike the burning of fossil fuels， the process used to create all that solar energy produces no emissions． Today， however， solar provides less than one percent of the world's energy， primarily because the cost of the panels is still very high． And price is only one issue． Clouds and darkness also cause solar panels to produce less energy， which requires one to have additional power sources （such as batteries） available． Some scientists think the solution to this problem can be found in space - which they say is the ideal place to gather energy from the sun． With no clouds and no nighttime， a space-based solar power station could operate constantly． These stations would send the power back to Earth， which could then be turned into electricity for consumption． Supporters of solar space stations say this technology would require a lot of money at the beginning， but eventually it could provide continuous， clean energy that would be cheaper than other fuels． Also， unlike other energy sources， solar power from space will last as long as the sun shines and will be able to guarantee everyone on Earth all the energy they need． Wind - the fastest-growing alternative energy source - is another way of collecting energy from the sun． Unlike solar power， however， it works well on cloudy days． All over Europe，incentivesdesigned to decrease the dependence on oil and coal have led to a steep increase in wind-powered energy． Despite its successes， some oppose wind-power development， saying the turbines are both noisy and ugly． Just outside England's Lake District， a protected national park， 27 wind towers are planned， each about 40 meters tall． Many locals are protesting． "This is a high-quality landscape，" says one local home owner． "They shouldn't be putting those things in here．" There are other challenges too． If the wind doesn't blow， the turbines don't have the capacity to produce enough energy． As a result， other power sources are needed． In contrast， a strong wind can create too much power． In cases like this， the energy company must sell the extra power at a much-reduced rate， which is not good for business． What's needed for both wind and solar is a way to store a large energy surplus （盈余） so that it can later be turned into electricity． However， most systems are still decades away from making this a reality． Nuclear was the energy alternative in the 1970s． Nuclear power produces vast amounts of electricity more cheaply than gas or coal， with no carbon emissions． For a number of years in the 1980s and '90s， however， use of nuclear power declined due to accidents， concerns about nuclear waste storage and disposal， and high construction costs． Today， though， times are changing． Worldwide about 440 plants now generate 16 percent of the planet's electric power， and some countries have invested heavily in nuclear energy． France， for instance， gets 78 percent of its electricity from nuclear power． China has started to build one or two new plants a year， and Japan and India have also begun to utilize nuclear energy on a large scale． Though there are still concerns about the safety of nuclear power， many now believe it may be one of the future's greenest energy alternatives． In the end， are any of these sources alone the answer to our current energy problems？ The short answer is no， but used in some combination - along with other power sources - we may find ways to reduce and eventually eliminate our dependence on fossil fuels．（1）The following statements about alternative sources are true EXCEPT that ____ ．A． unlike solar power， windmills are not much affected by weatherB． solar power stations don't have the capacity to store extra powerC． neither solar or nuclear power plants produce carbon pollutionD． nuclear power has regained its popularity despite safety concerns（2）The underlined word "incentives" in paragraph 7 is closest in meaning to ____ ．A． panelsB． parksC． productsD． policies（3）According to the author of the article， ____ ．A． space-based solar power stations are the perfect solution to the darknessB． wind towers ruin the landscape in the national park and disturb daily lifeC． the extra power created by stronger winds has to be sold at a lower priceD． none of the alternative energy sources alone can fully replace fossil fuels（4）The best title for this article is ____ ．A． The Energy Crisis AheadB． Powering the FutureC． Addicted to Fossil Fuel？D． The Finite Resources