Many years ago, people relied on the sun, the moon and stars to find their way around. Later, the compass was introduced. And now, we have satnav（卫星导航）systems to guide us. A satnav system uses groups of satellites to show the user’s location. They send information to a receiver, such as a smartphone, to show us where we are.
The earliest built satnav system is the Global Positioning Satellite System, which belongs to the US. Then there is Russia’s Global Navigation Satellite system，the European Union’s Galileo and China’s own satellite navigation system, Beidou.
On October 18, 2017, an ARJ21-700 plane, which was the first domestically（国内地） produced jet equipped with the Beidou navigation system, successfully completed a test flight. The results showed the performance of the system developed by China matches that of similar systems produced abroad, according to the Commercial Aircraft Corporation of China.
Since its introduction in 2000, the Beidou navigation system has been increasing numbers of applications linked to everyday life, from shared bikes to farming.
When it comes to shared bikes, smart locks that support Beidou chips offer more accurate positioning than others, making it easier to find a bike.
Farmers can use Beidou-enabled tractors to plow（犁）the soil and use unmanned aircraft with Beidou to sow seeds, which can improve efficiency and make better use of resources. Beidou’s farming applications have spread from Heilongjiang Province to Beijing, Liaoning, Shanxi, Hubei and other regions across China.
With its many uses, the Beidou navigation system is even playing a big role in the Belt and Road Initiative（一带一路）. “To date, the Beidou system has covered most parts of the Asia-Pacific region, as well as countries along the Silk Road Economic Belt and the 21st Century Maritime Silk Road,” said Yang Changfeng, chief designer of the Beidou system.
Today, there are more than 20 Beidou satellites above our heads, and China plans to launch even more this year to expand the Beidou network to better serve the Belt and Road Initiative.
“As Beidou expands its overseas reach, it will be increasingly popular in the logistics（物流） industry,” said Miao Qianjun, Secretary General of the navigation services association. “Ships, for example, can use it to position themselves while sailing across oceans to European countries, no longer limited to Southeast Asian regions in the near future.
1.What is the purpose of the first two paragraphs?
A. To compare some modern satnav systems.
B. To describe the benefits of satnav systems.
C. To tell us how satnav systems were created.
D. To introduce some satnav systems and their functions.
2.What can we know about the Beidou navigation system according to the article?
A. It was used successfully in a new jet plane.
B. It is more powerful than other satnav systems.
C. It was introduced to China on October, 2017.
D. It wasn’t used in our everyday life until recently.
3.According to the article, the Beidou navigation system is already widely used for _______.
A. plowing the soil and sowing seeds
B. improving the efficiency of network
C. producing more smart locks for shared bikes
D. navigating ships across oceans to European countries
4.What is Miao Qianjun’s attitude toward the future of the Beidou system?
A. Worried. B. Casual.
C. Positive. D. Doubtful.
高三英语阅读理解困难题
Many years ago, people relied on the sun, the moon and stars to find their way around. Later, the compass was introduced. And now, we have satnav（卫星导航）systems to guide us. A satnav system uses groups of satellites to show the user’s location. They send information to a receiver, such as a smartphone, to show us where we are.
The earliest built satnav system is the Global Positioning Satellite System, which belongs to the US. Then there is Russia’s Global Navigation Satellite system，the European Union’s Galileo and China’s own satellite navigation system, Beidou.
On October 18, 2017, an ARJ21-700 plane, which was the first domestically（国内地） produced jet equipped with the Beidou navigation system, successfully completed a test flight. The results showed the performance of the system developed by China matches that of similar systems produced abroad, according to the Commercial Aircraft Corporation of China.
Since its introduction in 2000, the Beidou navigation system has been increasing numbers of applications linked to everyday life, from shared bikes to farming.
When it comes to shared bikes, smart locks that support Beidou chips offer more accurate positioning than others, making it easier to find a bike.
Farmers can use Beidou-enabled tractors to plow（犁）the soil and use unmanned aircraft with Beidou to sow seeds, which can improve efficiency and make better use of resources. Beidou’s farming applications have spread from Heilongjiang Province to Beijing, Liaoning, Shanxi, Hubei and other regions across China.
With its many uses, the Beidou navigation system is even playing a big role in the Belt and Road Initiative（一带一路）. “To date, the Beidou system has covered most parts of the Asia-Pacific region, as well as countries along the Silk Road Economic Belt and the 21st Century Maritime Silk Road,” said Yang Changfeng, chief designer of the Beidou system.
Today, there are more than 20 Beidou satellites above our heads, and China plans to launch even more this year to expand the Beidou network to better serve the Belt and Road Initiative.
“As Beidou expands its overseas reach, it will be increasingly popular in the logistics（物流） industry,” said Miao Qianjun, Secretary General of the navigation services association. “Ships, for example, can use it to position themselves while sailing across oceans to European countries, no longer limited to Southeast Asian regions in the near future.
1.What is the purpose of the first two paragraphs?
A. To compare some modern satnav systems.
B. To describe the benefits of satnav systems.
C. To tell us how satnav systems were created.
D. To introduce some satnav systems and their functions.
2.What can we know about the Beidou navigation system according to the article?
A. It was used successfully in a new jet plane.
B. It is more powerful than other satnav systems.
C. It was introduced to China on October, 2017.
D. It wasn’t used in our everyday life until recently.
3.According to the article, the Beidou navigation system is already widely used for _______.
A. plowing the soil and sowing seeds
B. improving the efficiency of network
C. producing more smart locks for shared bikes
D. navigating ships across oceans to European countries
4.What is Miao Qianjun’s attitude toward the future of the Beidou system?
A. Worried. B. Casual.
C. Positive. D. Doubtful.
高三英语阅读理解困难题查看答案及解析
Many years ago, I owned a service station and roadhouse on the main road between Melbourne and Adelaide.
One very cold, wet night at about 3:30 a.m., there was a 36 on the front door of our house. A young man, wet from 37 to toe, explained that he had 38 out of petrol about 30 km up the road. He had left his pregnant wife and his two children 39 at the car and said that he would hitchhike(搭便车) back.
Once I had 40 a can with petrol, I took him back to his car where his two-year-old and four-year-old children were both 41 , saying that they were cold. Once the car had started, I suggested that he 42 me back.
Before leaving, I had turned the heater 43 in the roadhouse, so that when we went in, it was nice and 44 .While the little ones played and ran 45 ,I prepared bread and butter for the children, and hot chocolate for the 46 .
It was about 5 a.m. before they 47 .The young fellow asked me how much he 48 me and I told him that the petrol pump had 49 $15.He offered to pay “call-out fee”, but I wouldn’t accept it.
About a month later, I received a 50 from Interstate, a large bus company that we had been trying to 51 to stop off at our roadhouse for a long time. It 52 out that the young fellow I had helped was its general manager, the most 53 person in the company.
In his letter, he thanked me again and 54 me that, from then on, all their buses would stop at my service station. In this 55 ,a little bit of kindness was rewarded with a huge amount of benefits.
1.A. kick B. hit C. beat D. knock
2.A. finger B. shoulder C. head D. hand
3.A. driven B. used C. come D. run
4.A. away B. behind C. over D. out
5.A. supplied B. poured C. equipped D. filled
6.A. sleeping B. crying C. quarrelling D. fighting
7.A. allow B. ring C. lead D. follow
8. A. on B. off C. in D. over
9.A. neat B. hot C. warm D. attractive
10.A. around B. inside C. nearby D. along
11.A. drivers B. guests C. customers D. adults
12.A. left B. arrived C. ate D. disappeared
13.A. gave B. paid C. owed D. offered
14.A. appeared B. exhibited C. calculated D. shown
15.A. call B. letter C. check D. notice
16.A. get B. force C. require D. hope
17.A. pointed B. turned C. worked D. found
18.A. generous B. successful C. serious D. powerful
19.A. praised B. persuaded C. informed D. convinced
20.A. lesson B. business C. aspect D. case
高三英语完型填空中等难度题查看答案及解析
Many people rely on a cup of coffee or two to wake them up in the morning or pick them up during the working day, but now a chemist has come up with a speedy alternative to crafting a cup of coffee.
U.S. biochemist Ben Yu has created Sprayable Energy, which claims to be the world’s first caffeine - based topical energy spray. He said tired workers can spray a `shot` of caffeine onto their skin without experiencing a strong buzz, loading up on unnecessary calories or being stuck with a nasty aftertaste like they might get from drinking energy drinks or coffee.
The patent-pending caffeine spray is an odorless liquid that is absorbed through the skin and distributed through the body over a number of hours to deliver a caffeine hit that apparently lasts longer than guzzling a cup of coffee.
Each small aluminum bottle of Sprayable Energy contains around 160 sprays - the equivalent amount of caffeine to 40 cups of coffee and the creators say it is a much cheaper way of getting a caffeine fix than popping to a café. The only active ingredient in the spray is caffeine, which can naturally enter the human body through the skin by passing through cell membranes（细胞膜） as it is very similar to nicotine in structure. Each spritz of Sprayable Energy contains around a quarter of the amount of caffeine found in a cup of coffee, but apparently has the same effect as a full cup.
The website said: `The reason for this is our product not being ingested, isn’t almost entirely metabolized（新陈代谢） by the liver before entering your system and becoming available to your body.Thus, a smaller amount of caffeine can have just the same effect as a very large amount of caffeine ingested through an energy drink or cup of coffee. The website recommends that users apply the spray in places where they normally spritz perfume, such as the neck or wrists, but warns users not to exceed 20 sprays a day.
It claims that after spraying the product on the skin, users will feel awake and focused without being over-stimulated, which is common with coffee and energy drinks.
1.What can we learn about Sprayable Energy from the passage? _______.
A. A bottle of Sprayable Energyis cheaper than 40 cups of coffee.
B. Sprayable Energy lets users not worry about taking in unnecessary calories.
C. Sprayable Energy can be used at least 20 sprays a day
D. The caffeine spray is a colorless liquid that is absorbed through the skin.
2.What can conclude from the passage ?
A, Sprayable Energy can be taken by mouth.
B. Before Sprayable Energy is absorbed by body, the liver entirely metabolizes it
C. Sprayable Energy has not already gone into mass production
D. each spritz of Sprayable Energy has the same effect as a full cup of coffee
3.You will probably read this passage in the column of___________.
A. Food B. Health
C. Entertainment D. Energy.
4.What’s the best title of this passage?
A. Sprayable Energy----cheaper but more effective
B. Sprayable Energy----now or never
C. Sprayable Energy----a latest energy spray
D. Sprayable Energy----a new kind of coffee
高三英语阅读理解简单题查看答案及解析
Long before the Internet, and even before the telephone, people relied on pen and paper to communicate. It’s a lot different from writing an email because when you make a mistake, you cannot “backspace” your errors away. 1.
Letter writing has been a key means of communication for people throughout history.2. Famous names like Christopher Columbus and Amerigo Vespucci graced my history textbooks growing up, with stories of their explorations. Much of what we know about them is through the letters they wrote to people back in Europe.
There were two main reasons why these early explorers wrote letters.3. The other reason for writing letters was to assure and update the people who financed their trips. These so-called sponsors were often noblemen or wealthy people who had a personal interest in world discoveries. Letters from explorers would raise hopes that new lands could bring more riches.
When the British began building colonies (殖民地) in America during the 17th century, these lands were settled by people who sailed across the Atlantic Ocean.4. Their letters were mixed with news of illness as well as details of their exotic (异国的) surroundings.
5. With the widespread use of the Internet, the tiny differences of a person’s handwriting are lost to the cold, typewritten text that comes with an email. A person’s unique signature is reserved for signing a receipt for a credit card payment.
A. Letter writing is just how you travel around the world.
B. You simply cross out your mistakes with your pen and continue writing.
C. The early settlers faced a lot of challenges in the unfamiliar environment.
D. One was a boy from England who liked the same music as me: rock and roll.
E. Four hundred years later, however, we don’t really need to write letters anymore.
F. It played a vital part in the exploration of the ‘"New World”, as America was once known.
G. One was to document for the people back home what they saw as they journeyed through the faraway, mysterious land.
高三英语七选五中等难度题查看答案及解析
The discussion on renewable energy has been going on for at least a decade and people have relied on fossil fuels almost entirely for more than a century. However, the situation when fossil fuels were the most efficient and the cheapest source of energy has been left far in the past. Many countries such as Germany and Sweden have already made significant efforts to fix this situation, employing numerous power plants working on the renewable resources of energy. The most effective among these resources is geothermal (地热的) energy.
Geothermal energy does not depend on the world’s economic and political situation as strongly as fossil fuels do. Besides, extracting (提炼) fossil fuels adds to the price of energy produced from them. Therefore, geothermal energy is much cheaper than traditional ones, saving up to 80% of the costs over fossil fuels.
Being a renewable resource, geothermal energy produces less waste and pollution than traditional energy sources. In geothermal systems, carbon dioxide makes up about 10% of air produced. Overall, in order to produce the electricity that can be used for one hour, the geothermal systems produce 0.1 pound of carbon dioxide and other harmful gases. For a comparison, a power plant producing from gas produces up to 2 pounds of carbon dioxide into the atmosphere, and those power plants that work on coal (煤) produce an astonishing 3.6 pounds of greenhouse gases.
Low costs is another reason why using geothermal power plants should be the first choice for many countries. Geothermal heat systems require 25% to 50% less energy for work compared with the traditional systems for heating or cooling. Besides, geothermal equipment is less big: due to the very nature of geothermal energy, geothermal power plants have only a few moving parts, all of which can be easily sheltered inside a relatively small building. What’s more, the life span of geothermal equipment is rather long. All these make geothermal power stations easy to build and keep.
1.Fossil fuels are more expensive than geothermal energy partly because _______.
A. it is free to use geothermal energy
B. fossil fuels are nearly used up
C. the production of fossil fuels costs a lot
D. geothermal energy doesn’t depend on political situation
2.According to Paragraph 3, what can be concluded from the comparison?
A. Coal is much more efficient than gas.
B. Gas and coal are often used to produce electricity.
C. Geothermal energy is environmentally friendly.
D. The geothermal systems don’t produce harmful gases.
3.Geothermal equipment is usually not as big as that of traditional energy because of ________.
A. the nature of geothermal energy B. geothermal power plants
C. life span of geothermal equipment D. the small buildings
4.What is the main idea of this passage?
A. Many countries have benefited from geothermal energy.
B. Geothermal energy is well accepted.
C. Geothermal energy has many advantages.
D. Fossil fuels are being run out of.
高三英语阅读理解简单题查看答案及解析
The discussion on renewable energy has been going on for at least a decade and people have relied on fossil fuels almost entirely for more than a century. However, the situation when fossil fuels were the most efficient and the cheapest source of energy has been left far in the past. Many countries such as Germany and Sweden have already made significant efforts to fix this situation, employing numerous power plants working on the renewable resources of energy. The most effective among these resources is geothermal（地热的）energy.
Geothermal energy does not depend on the world’s economic and political situation as strongly as fossil fuels do. Besides, extracting（提炼）fossil fuels adds to the price of energy produced from them. Therefore, geothermal energy is much cheaper than traditional ones, saving up to 80% of the costs over fossil fuels.
Being a renewable resource, geothermal energy produces less waste and pollution than traditional energy sources. In geothermal systems, carbon dioxide makes up about 10% of air produced. Overall, in order to produce the electricity that can be used for one hour, the geothermal systems produce 0.1 pound of carbon dioxide and other harmful gases. For a comparison, a power plant producing from gas produces up to 2 pounds of carbon dioxide into the atmosphere, and those power plants that work on coal（煤）produce an astonishing 3.6 pounds of greenhouse gases.
Low costs is another reason why using geothermal power plants should be the first choice for many countries. Geothermal heat systems require 25% to 50% less energy for work compared with the traditional systems for heating or cooling. Besides, geothermal equipment is less big: due to the very nature of geothermal energy, geothermal power plants have only a few moving parts, all of which can be easily sheltered inside a relatively small building. What’s more, the life span of geothermal equipment is rather long. All these make geothermal power stations easy to build and keep.
1.Fossil fuels are more expensive than geothermal energy partly because _______.
A. it is free to use geothermal energy
B. the production of fossil fuels costs a lot
C. fossil fuels are nearly used up
D. geothermal energy doesn’t depend on political situation
2.According to Paragraph 3, what can be concluded from the comparison?
A. Geothermal energy is environmentally friendly.
B. Gas and coal are often used to produce electricity.
C. Coal is much more efficient than gas.
D. The geothermal systems don’t produce harmful gases.
3.Geothermal equipment is usually not as big as that of traditional energy because of______.
A. the life span of geothermal equipment
B. geothermal power plants
C. the nature of geothermal energy
D. the small buildings
4.What is the main idea of this passage?
A. Many countries have benefited from geothermal energy.
B. Geothermal energy is well accepted.
C. Fossil fuels are being run out of.
D. Geothermal energy has many advantages.
高三英语阅读理解中等难度题查看答案及解析
About one hundred years ago many educated people learned and spoke French when they met people from other countries.Today most people speak English when they meet foreigners. 1. There are more people who speak English as a second language than people who speak English as a first language.Why is this?
2. One of them is that English has become the language of business.Another important reason is that popular American culture(like movies，music，and McDonald’s)has quickly spread throughout the world.3.
Is it good that English has spread to all parts of the world so quickly? 4. It’s important to have a language that the people of the earth have in common.Our world has become very global and we need to communicate with one another.On the other hand，English is a fairly complicated language to learn and it brings its culture with it.Do we really need that?
Scientists have already tried to create an artificial language that isn’t too difficult and doesn’t include any one group’s culture.It is called Esperanto.5. Maybe the popularity of English won’t last that long either.Who knows? There are more people in the world who speak Chinese than any other language.Maybe someday Chinese will be the new international language.
A.People like English.
B.But it hasn’t become popular.
C.It has brought its language with it.
D.There is no doubt about the question.
E.This is why English was widely spoken.
F.It has become the new international language.
G.There are many reasons why English has become so popular.
高三英语七选五简单题查看答案及解析
It may be 5 or 10 years __________ it is possible for people to find a space station on the moon.
A. since B. before C. after D. when
高三英语单项填空中等难度题查看答案及解析
Many people think the search for cleaner energy leads only to renewable resources like sun, wind and water．But it also leads to a fossil（化石） fuel．Natural gas is considered the cleanest of the fossil fuels, the fuel created by plant and animal remains over millions of years．Burning it releases fewer pollutants than oil or coal．The gas is mainly methane （甲烷）．It produces half the carbon dioxide of other fossil fuels．So it may help cut the production of carbon gases linked to climate change．
Russia is first in what are called "proved reserves" of natural gas．The United States is sixth．Over the years, big oil and gas companies recovered much of the easily reached supplies of gas in America．They drilled straight down into formations where gas collects．As these supplies were used up, big drillers looked for similar formations in other countries．
But now the industry is taking on a new look．Companies are developing gas supplies trapped in shale （页岩） rock two to three thousand meters underground．They drill down to the shale, then go sideways and inject high-pressure water, sand or other material into the rock．This causes the rock to fracture, releasing the gas．Huge fields of gas shale are believed to lie under the Appalachian Mountains, Michigan and the south-central states．Gas shale exploration is being done mainly by small to medium sized companies．Eric Potter, a program director, says more than half the gas in the United States is now coming from these new reserves．
But hydraulic （液压的） fracturing can also produce debate and anger over the risk of groundwater pollution．This method of drilling is not federally supervised（监督） under the Safe Drinking Water Act．Some in Congress want to end that exemption （豁免） from the law．
Natural gas provides Americans with about one fourth of their energy．And, unlike oil, most of it is produced in America．Gas producers invested heavily in reaching new supplies when prices were high．But prices are down sharply now because the depression cut demand for energy．So energy expert Eric Potter says it is too early to know how the changing market prices will affect the market for gas shale exploration．
1.We can learn from the first paragraph that ________．
A．natural gas releases methane and carbon dioxide
B．natural gas is considered as the cleanest energy
C．natural gas is more environmentally friendly than other fossil fuels
D．natural gas is a renewable source of energy
2.The word “fracture” in Paragraph 3 probably means ________．
A．create B．break C．change D．decrease
3.Gas shale exploration may cause disagreement because ________．
A．it may cause water pollution B．it brings too high profits
C．it breaks the law D．it is out of states’ control
4.According to Eric Potter, the new gas shale exploration ________．
A．will provide America with about one fourth of their energy
B．will increase demand for energy
C．will make gas producers invest a big sum of money
D．may be influenced by the changing market prices
高三英语阅读理解中等难度题查看答案及解析
Many years ago, when I was in high school and working on weekends, I lost my wallet. After adding gas to my old car, I paid, and my wallet at the gas station. I hadn’t even had time to I had lost it when my phone rang. A man asked me if I had lost my wallet. I my purse and to my , I had. He asked me to him what was in it. I did so. He then told me where to my wallet.
When I reached his , I noticed his wheelchair and a slope(坡道)going up to the house. I thought that it might have been for him to lower his body and pick up my wallet. I knocked on the door and he told me to come in. I him for finding my wallet. While I didn’t want to insult(侮辱)him by offering , I really felt like something. So I asked him if there was anything I could do to repay his , and he said, “Just pass it on. ”I said I would be to do that. I was raised to be honest in any case and I would have done so, promising this fellow I would, but I wanted to his kindness, so I promised I would.
Ten years later I found a lying on the ground. It me several days to find the owner. He lived in another state, about 60 miles away from where I found the wallet. When he me back, we to meet, so I could return his wallet. He was actually all his money was still in the wallet and he tried to hand me a $20 bill. I told him, “Thanks, but just pass it on. . . ”
1.A. forgot B. left C. found D. saw
2. A. realize B. regret C. consider D. recognize
3. A. looked B. checked
C. found D. searched for
4.A. anger B. delight C. horror D. excitement
5. A. tell B. give C. buy D. offer
6. A. turn up B. bring up
C. look up D. pick up
7.A. house B. school C. company D. station
8. A. easy B. practical
C. difficult D. useful
9.A. presented B. thanked C. blamed D. paid
10. A. help B. thanks C. money D. wallet
11. A. leaving B. saying C. offering D. owning
12. A. labor B. patience C. kindness D. support
13.A. able B. hard C. certain D. possible
14. A. without B. with C. on D. by
15.A. repay B. thank C. show D. reply
16.A. package B. cellphone
C. card D. wallet
17. A. spent B. cost C. wasted D. took
18. A. called B. paid C. brought D. went
19. A. started B. preferred C. agreed D. failed
20. A. satisfied B. worried
C. puzzled D. surprised
高三英语完型填空中等难度题查看答案及解析