A cut in the tissue is easy to heal but a(an)...

A cut in the tissue is easy to heal but a(an) _______ to the heart, if possible, takes a long time to do so.

高三英语单项填空中等难度题查看答案及解析

E

Windows not only let light in to cut down an electricity use for lighting, but the light coming through the window also provides heat. However, windows are not something people typically associate with being a cutting edge technology. Researchers are now working on new technologies that enable a window to quickly change from clear to dark and anywhere in between with a turn of a switch.

“It took us a long time to figure out what a window really is,” says Claes Granqvist, a professor of solid—state physics at Uppsala University in Sweden.“It’s contact with the outside world. You have to have visual contact with the surrounding world to feel well.” So, windows and natural light are important for improving the way people feel when they’re stuck indoors.

Yet, windows are the weak link in a building when it comes to energy and temperature control. In the winter, cold air leaks in. When it’s hot and sunny, sunlight streams in. All of this sunlight carries lots of heat and energy. And all of this extra heat forces people to turn on their air conditioners. Producing cold air, which can feel so refreshing, actually suck up enormous amounts of electricity in buildings around the world.

Windows have been a major focus of energy research for a long time. Over the years, scientists have come up with a variety of strategies for coating, glazing, and layering windows to make them more energy efficient. Smart windows go a step further. They use some technologies involving changes of color.

Electrochromic windows use electricity to change color. For example, a sheet of glass coated with thin layers(层) of tungsten oxide(氧化钨) works a bit like a battery. Tungsten oxide is clear when an electric charge is applied and dark when the charge is removed, that is, when the amount of voltage(电压) is decreased, the window darkens until it’s completely dark after all electricity is taken away. So applying a voltage determines whether the window looks clear or dark.

One important feature that makes a smart window so smart is that it has a sort of “memory”. All it takes is a small shock of voltage to turn the window from one state to the other. Then, it stays that way. Transitions take from 10 seconds to a few minutes, depending on the size of the window. The development of smart windows could mean that massive air conditioning systems may no longer need.“In the future,” Granqvist says,“our buildings may look different.”

67.Which statement does not indicate the importance of windows as described in the first two paragraphs?

A.Windows can change from clear to dark to save energy.

B.Windows help to save energy by letting light in.

C.Windows help to save energy by providing heat.

D.Windows enable people to have contact with the outside world.

68.According to the passage, smart windows are windows_______.

A.that are coated                        B.that use electricity

C.the color of which can be changed        D.that have many layers

69.To make electrochromic windows change color, what is applied to the window glass?

A.Electricity.     B.Tungsten oxide.    C.A battery.         D.A voltage.

70.What will be the benefit if the research on smart windows turns out to be successful?

A.The buildings will look different.

B.Windows can be as large as you want.

C.We may not need air conditioners any more.

D.They are less expensive than traditional windows.

高三英语阅读理解简单题查看答案及解析

It’s never easy to admit the mistakes you make, but doing so is an important step toward moving forward.

National Geographic magazine recently published an article with the title “For decades, our coverage was racist. To rise above our past, we must acknowledge it.” It was written by the magazine’s editor-in-chief Susan Goldberg, the first woman and first Jewish person to hold the position. National Geographic has acknowledged that its coverage of the black and racial minorities in America and the wider world has been historically racist, frequently promoting caricatures of the “noble savage” and barely featuring the US’s minority population.

According to Goldberg, the 130-year-old publication’s April issue “explores how race defines, separates, and unites us”. In honor of 50 years since the killing of Martin Luther King, who is known for fighting racial inequality in the US, the issue is devoted to race.

The publication republished a number of examples of historical racism in its coverage. One 1916 article about Australia included a photo of two Indigenous Australians with the wording: “South Australian Blackfellows: These savages rank lowest in intelligence of all human beings.”

To review its previous coverage of race, Goldberg asked University of Virginia historian John Edwin Mason to look back at the magazine’s text, choice of subjects, and photography of people of color from the US and abroad. “Until the 1970s, National Geographic all but ignored people of color who lived in the United States, rarely acknowledging them beyond laborer or domestic workers,” Goldberg wrote about Mason’s findings. “Meanwhile, it pictured ‘natives’ elsewhere as exotics, famously and frequently unclothed happy hunters, noble savages.”

Mason also found that the magazine often ran photos of “uncivilized” natives amazed by “civilized” Western technology.

In recent years, however, the magazine has improved. For example, in a 2015 project, National Geographic gave cameras to young people in the Caribbean country of Haiti and asked them to shoot pictures of their everyday lives.

“The coverage wasn’t right before, because it was told from a white American point of view, and I think it speaks to exactly why we needed a variety of storytellers,” Goldberg told the Associated Press.

National Geographic’s look at its past also inspired other media organizations to revisit their own historical coverage of race. The New York Times admitted that most of its obituaries(讣告) were about the lives of white men, and has started publishing obituaries of famous women in a special section titled “Overlooked”. After all, recognizing overlooked mistakes is what makes us grow.

1.The April issue of National Geographic magazine is special because ______.

A.readers can see Mason’s investigation report in this issue

B.it is released to mark National Geographic’s 130th anniversary

C.it focuses on the issue of race in memory of Martin Luther King

D.it is the first issue since Susan Goldberg became the editor-in-chief

2.Which of the following may prove National Geographic’s coverage was racist?

A.It often pictured coloured people with decent jobs.

B.Natives were often presented as undressed happy hunters.

C.It asked ordinary people to shoot pictures of their daily lives.

D.It only featured minority groups in America but overlooked others.

3.What can we learn about the National Geographic?

A.It used to tell stories from the perspective of a white Jewish woman.

B.The overall image of natives in it was brave, intelligent but uncivilized.

C.Its texts and choice of subjects were diverse and had no racial prejudice.

D.It inspired other media organizations to reflect on their coverage of race.

4.According to the writer, acknowledging the mistakes may 　　　　　 .

A.spoil the image of the world famous magazine

B.remove racial discrimination around the world

C.help the magazine to move forward and grow better

D.discourage the editors from reporting bravely and honestly

高三英语阅读理解中等难度题查看答案及解析

Encouraging life to bloom in the middle of a desert is no easy task. But one company, The National Advisor Bureau, in the United Arab Emirates has come up with a unique plan to provide drinking water for the state’s citizens. The firm intends to pull icebergs from Antarctica to the gulf coast in order to harvest its billions of gallons of fresh water. One iceberg could provide enough for one million people over five years, according to the company. And the scheme could begin as early as the start of 2018.

The firm’s director says they have already travelled the transportation route and used simulators to check the practicality of the scheme, according to reports in Gulf News. Speaking to the site about what he is calling the UAE Iceberg Project, Abdullah Mohammad Shehi said: “we predict that it will take up to one year to tow (拖拉) an iceberg to UAE.” We have made the technical and financial plan. Towing is the best method. We will start the project in beginning of 2018. “We want it mainly for the water. It could also be good for tourism and the weather.”

The UAE is one of the most dry countries and one of the top 10 most water-scarce in the world, due to its extremely dry climate, which receives less than four inches (100 mm) of rainfall per year. Despite that, it consumes more water than double the global national average, putting the country at severe risk of droughts over the next 25 years. An average iceberg contains more than 20 billion gallons of water, according to the Abu Dhabi-based company. They take a long time to melt as 80 percent of their mass is underwater, while the white ice above reflects sunlight, reducing its heat. Upon arrival at a specially constructed processing facility, workers will “mine” the icebergs for their water supplies. Blocks of ice will be sliced and placed in giant tanks, before being filtered and processed. “This is the purest water in the world”, Mr Al Shehi added. He also claims the iceberg’s presence could provide a more moist micro-climate in the area, perhaps even prompting rainfall. And the project may prove a boost for tourism if it proves a success, with people travelling to see the unusual sight of an iceberg off the coast of the Arabian Gulf.

1.What is the main purpose of The National Advisor Bureau’s scheme?

A.To boost tourism and ease financial burden in UAE.

B.To save endangered wildlife and boost tourism in UAE.

C.To make drinking water accessible to the people in UAE.

D.To get the purest water in the world for the citizens in UAE.

2.What does the underlined word simulator in Paragraph 2 refer to?

A.A type of mining tool to carve out the iceberg.

B.An electronic device to create and store energy.

C.A vehicle to transport the iceberg from Antarctica.

D.A piece of equipment to test potential conditions.

3.Which of the following helps slow down the melting of iceberg during transportation?

A.The special electronic devices to keep the iceberg frozen.

B.The time of processing iceberg before being transported.

C.Much of the iceberg lying under water with ice above reflecting light.

D.The floating of the iceberg in the seawater with a more moist micro-climate.

4.What is the author’s attitude towards the plan?

A.Favorable. B.Cautious. C.Ambiguous. D.Disapproving.

高三英语阅读理解中等难度题查看答案及解析

Lego is considering a brick (积木) rental plan in an attempt to cut down on plastic waste. The Danish toymaker has promised to make all its bricks from sustainable (可持续的) sources by 2030 and is investing significant resources into finding alternatives.

Tim Brooks, vice-president responsible for sustainability, said the company was “totally open” to the idea of a product rental plan but admitted that lost pieces could produce a significant problem. “What are the chances of giving them to an eight-year-old child and getting them all back again?” Mr. Brooks added.

“There is a lot of technical thinking that needs to be done. We are right at beginning of that.” Mr. Brooks said Lego was exploring several ideas with a view to producing the highest value from products while consuming the least amount of resources. He said many would “probably never see the light of day” and there was no current plan to try out a rental plan.

Lego has come under increasing pressure to reduce its carbon footprint among growing international alarm about the impact of plastic waste on the environment. It produces 19 billion pieces per year—36, 000 a minute—that are made entirely of plastic while much of the inside packaging is also plastic.

So far, the only breakthrough has been the development of a line of bricks made from plant-based plastic sourced from sugarcane. The green trees, plants and flowers were first included in Lego sets late last year but make up only 1%-2% of the total amount of plastic elements produced. Henrik Nielson, a production supervisor (主管) in Lego’s factory, said last year: “We need to learn again how to do this.”

Lego reportedly releases around a million tons of carbon dioxide each year, with about 75% coming from raw materials that go into factories. The company has invested more than 100, 000,000 euros and hired 100 people to research non-plastic alternatives. It is aiming to keep all of its packaging out of landfill by 2025.

1.Lego is making great efforts to ________.

A.promote its brick rental plan B.raise its production efficiency

C.explore ways to reduce plastic waste D.develop new products

2.According to Mr. Brooks, Lego’s brick rental plan ________.

A.is well under way B.has a long way to go

C.is totally useless D.goes against Lego’s interest

3.The writer tells of Lego’s stress of reducing plastic waste by means of ________.

A.figures B.examples

C.comparison D.classification

4.What is Lego’s attitude towards developing non-plastic alternatives?

A.Defensive. B.Determined.

C.Disapproving. D.Doubtful.

高三英语阅读理解中等难度题查看答案及解析

Lego is considering a brick rental scheme in an attempt to cut down on plastic waste. The Danish toymaker has promised to make all its bricks from sustainable （可持续的） sources by 2030 and is ploughing significant resources into finding alternatives.

Tim Brooks, vice-president responsible for sustainability, said the company was "totally open" to the idea of a product rental scheme but acknowledged that lost pieces could cause a significant problem. He said the rental scheme was "possible" but admitted there were some "technical barriers", one of which is the complexity of some Lego kits （配套元件），many of which contain thousands of pieces.

" What are the chances of giving them to an eight-year-old child and getting them all back again?” Mr Brooks added. "There is a lot of technical thinking that needs to be done.

We are right at beginning of that.” Mr Brooks said Lego was exploring several ideas with a view to producing the highest value from products while consuming the least amount of resources. He said many would "probably never see the light of day” and there was no current plan to try a rental scheme.

Lego has come under increasing pressure to reduce its carbon footprint amid growing international alarm about the impact of plastic waste on the environment. It manufactures 19 billion pieces per year—36,000 a minute——that are made only of plastic while much of the internal packaging is also plastic.

So far, the only breakthrough has been the development of a line of bricks made from plant-based plastic sourced from sugarcane. The green trees, plants and flowers were first included in Lego sets late last year but account for only one-two percent of the total amount of plastic elements produced. Henrik Ostergaard Nielson, a production supervisor in Lego's factory in Billund, told the New York Times last year： "We need to learn again how to do this”

1.How will Lego cut down on plastic waste?

A.By considering a brick rental scheme.

B.By producing a new kind of toys instead of bricks.

C.By replacing common plastic with a renewable material.

D.By investing large amounts of money into market.

2.What does Tim Brooks expect of the product rental scheme?

A.It'll cause certain serious problems.

B.It'll be of great complexity.

C.It'll require more mature technical skills.

D.It'll involve much more kits of bricks.

3.What does the underlined word “many” in Paragraph 3 refer to?

A.Ideas. B.Values.

C.Products. D.Resources.

4.What can be inferred from the passage?

A.Lego has to explore a new product to earn a profit.

B.A brick rental scheme has been put into mass production.

C.plant-abased plastic is environmentally friendly.

D.Lego is optimistic about the brick rental scheme.

高三英语阅读理解困难题查看答案及解析

Flying out of an airport in the United States is not always easy. You will need to complete the ticketing process, baggage check, and security clearance procedures before boarding the plane.

If you are flying on an international flight, you'd better arrive two hours before your plane is scheduled to leave. You might need more time in a busy airport in a large city. If you are traveling on a domestic (国内的) flight, you may only need to arrive at the airport 90 minutes before your plane takes off.

Every airport in the States is now moving its ticketing procedure to electronic ticketing device. By using a ticketing machine, you have the chance to choose a seat you like on the plane. If you use it to check-in your bags, you will only have to talk to the ticketing agent when you turn in your luggage to be tagged (加标签). At the same time a real person will be nearby to help you if you need it.

After you have checked in, you will have to pass through airport security. Have your ID card or passport and boarding pass ready to show the security officer when entering the security checkpoint line. Airport security is getting tight in the States today. You're not allowed to travel with any prohibited things like knifes or fireworks.

After the security staff has checked your travel documents, you shall put all of your belongings through a scanning machine and then walk through a metal detector (探测器) or a full body scanner. You need to take off your coat, belt, and sometimes your shoes to go through one of these scanners. Be sure not to have any metal in your pockets. If you do not understand a question you are asked at a security checkpoint, ask the person to repeat their question until you are able to respond with an accurate answer.

高三英语填空题中等难度题查看答案及解析

It is not easy to learn English well but if you ______, you will succeed in the end.

A．hang up           B．hang about        C．hang on           D．hang around

高三英语单项填空中等难度题查看答案及解析

—Listening to language recording in bed seems like an easy way to _______ some new vocabulary.

—But does this learning method actually work?

A. polish up　　 B. make up

C. pick up　　 D. build up

高三英语单项填空中等难度题查看答案及解析

To be an artist is not easy, but sometimes dreams can be a rich source of ________—for an artist.

A. occasion            B. identification        C. inspiration        D. occupation

高三英语单项填空困难题查看答案及解析