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In Copenhagen,an 8-year dream was realized when the first paid skiers took their runs down a one-third-mile course （路线）.They skied on what is possibly the greenest power factory in the world.The factory is so clean and safe that designers were able to turn its buildings into a new center for social life.
The waste-to-power factory itself opened in 2017 under the name Amager Bakke.Bjarke Ingels is the architect whose company came up with the idea eight years ago of designing a power plant building that would join mountain sports into its very nature.
"It is the cleanest waste-to-energy power plant in the world.It is not only better for the environment,it is also more enjoyable for the lives of its citizens." Ingels says 97% of city people get their heating as a by-product of energy production.It comes from a system where the electricity,heating,and waste disposal（处理） are mixed into a single process.He dreams that it is also becoming an example that others can look to and say,"If Copenhagen can do it why can't we？"
There are no hills in this island city,but now people can ski locally,while enjoying the best views ever seen of the harbor.Another thing missing here is snow cover throughout the winter,so designers set up a kind of special "plastic grass" that provides the perfect friction （摩擦力） for downhill winter sports.
In a country where 600，000 skiers always had to travel to practice sking,to be able to finally ski in their backyard-and,all year round - is,as one skier said,"AMAZING."
The company hopes to see 300，000 visitors enjoying the experience of Copen hill each year,with the ski slope costing ﹩22 an hour or just ﹩366 for a full season pass.Meanwhile,the city is one step closer to its final goal of becoming the world's first carbon-neutral city by 2025.We think it might be all "down hill" from here.



How does the power factory produce electricity？ ______

A. By using oil.
B. By using coal.
C. By using wind.
D. By using waste.

What's Ingels' dream according to the passage？ ______

A. To make more tall buildings in different big cities.
B. To help more skiers to ski in high mountains.
C. There will be more green power factories in the world.
D. More and more people will ski in the power factory.

Where do the skiers ski in the power factory？ ______

A. On man-made snow.
B. On man-made ice.
C. On plastic grass.
D. On real sand.

The underlined part "it might be all 'downhill' from here" means that ______ .

A. they will soon reach their final goal
B. they will soon draw many visitors
C. they will produce more electricity
D. they have difficulties reaching the goal

Nowadays organic（有机的）food has become a fashion.Organic food sales reached a record of ﹩45.2 billion in 2017，making it one of the fastest-growing parts of American agriculture.Some people may buy organic food for these reasons like resource cycling and biodiversity（生物多样性），but most people may choose organic food because they think it's healthier.While a small number of studies have shown relationships between eating organic food and reducing risks of being ill,no studies,up to now,have answered the question whether eating organic food can improve health.
According to the United States Department of Agriculture（USDA），organic food does not suggest anything about health.In 2015，Miles McEvoy,then chief of the National Organic Program for the USDA，refused to admit any health benefits of organic food,saying the question has nothing to do with the National Organic Program.Instead,the USDA thinks that organic refers to a production method that increases cycling of resources,keeps ecological balance,and protects biodiversity.
I'm an environmental health scientist who has spent over 20 years studying pesticides（杀虫剂） that do harm to human beings.Several years ago,I was part of the study on whether an organic diet can reduce pesticide exposure（接触）.This study focused on a group of pesticides which have always been harmful to children's brain development.We found that children who ate traditional diets had nine times higher exposure to these pesticides than children who ate organic diets.
Last month,I published a small study that suggested a path forward to answering the question whether eating organic food actually improves health.My study got a lot of attention.While the results were novel,they didn't answer the big question.As I told The New York Times in 2003，"What does this really mean for the safety of my kids？But we don't know.Nobody does.It was true then,and it's still true now."



Why do most people prefer to buy organic food？ ______

A. For its health benefits.
B. For biodiversity.
C. For its delicious taste.
D. For resource cycling.

What does the USDA suggest about organic food？ ______

A. It can improve people's health.
B. It is produced in an environment-friendly way.
C. It can reduce risks of being ill.
D. It has nothing to do with the National Organic Program.

What can be concluded from the author's study？ ______

A. Pesticides don't harm children's brain.
B. Traditional diets benefit people's health.
C. Organic diets can reduce pesticide exposure.
D. The results are meaningful to children's safety.

What is the best title for the text？ ______

A. What Is Organic Food？
B. Is Organic Food Healthier？
C. How Should We Avoid Pesticides？
D. What Are the Benefits of Organic Food？

Giving children music lessons won't just lead them to a world of melody——it could also greatly improve their language skills.
While numerous studies have shown that learning an instrument can impact things like language ability,it wasn't understood if this was a side effect of a general improvement to cognitive skills,or something that directly affected language processing.
Now,we know more about that,from a study of 74 Chinese kindergarten children,led by neuroscientist Robert Desimone."The children did show improvements in word discrimination （辨别），particularly for consonants（声母），" explains Desimone.
For the study,Desimone's team randomly divided the Mandarin—speaking children into three groups.One group received a 45-minute piano lesson three times a week,while another received extra reading instruction classes.The third group acted as controls,taking no extra lessons beyond their usual routine.The classes lasted for six months,after which the children were tested on their ability to discriminate words based on differences in tone,consonants,or vowels.
The test results showed that the children who had taken piano lessons performed significantly better at discriminating between words,compared against the children who took extra reading lessons.Compared to the control group,both the music learners and the extra reading group did better in discriminating words.
To learn why these differences happen,the researchers studied the children's brain activity via electroencephalography （EEG） and found the piano group showed greater sensitivity to tonal changes.The thinking goes,having music lessons helped develop this tonal sensitivity,which partly explains better word discrimination.
It's also worth emphasizing that the musical education helped these children outperform their peers in language tests—even beyond the results of kids who took extra reading classes."It's better than extra reading.That means schools could invest in music," Desimone says.



What did previous studies show？ ______

A. Instruments learning helps language ability.
B. Language is a side effect of cognitive skills.
C. Learning an instrument slows down language processing.
D. Extra reading is needed to improve language skills.

What is paragraph 4 mainly about？ ______

A. Why the study was carried out.
B. The differences between word discrimination.
C. How the study was carried out.
D. How the groups were divided.

According to paragraph 6，why were there differences between word discrimination？ ______

A. Because of the limitation of brain activity.
B. Because of electroencephalography.
C. Because of tonal changes between different groups.
D. Because of different levels of tonal sensitivity.

What does the underline word "outperform" in paragraph 7 mean？ ______

A. Compare with.
B. Invest in.
C. Do better than.
D. Differ from.

In 1940，a thin,gray rabbit jumped out of a hole in the ground,knocked on a hairless man's head and asked,"What's Up,Doc？" to the sound of eating a large carrot.
Though the rabbit had appeared in previous short films for two years,this classical scene in the Warner Brothers cartoon short "A Wild Hare" introduced the version of the rabbit that would become the cultural figure of Bugs Bunny.In the decades since,Bugs has appeared in over 150 films.He has earned a star on the Hollywood Walk of Fame.And he was the first cartoon character to get his face on a postage stamp.TV Guide ranked him Number One on a list of the 50 greatest cartoon characters.
Bugs was unlike Disney's Mickey Mouse and Donald Duck.They came with their own set of physical characteristics but with little personality.Bugs was defined by his wiseacre（自作聪明）attitude and funny tricks.He rocketed to fame because he was character driven,rather than practical joke driven.And while every director put his own imagination on Bugs Bunny,they all agreed on one thing that Bugs was never to be small minded.They wanted him to be a nice person,but not a person who is easy to persuade or influence.
For the directors and audiences alike,Bugs was more than just a cartoon character.Directors' attitude was that Bugs already existed and they were just writing about him.One of them would come home in the evening and say to his wife,"You won't believe what Bugs Bunny said today!" For so many years till now in 2021，Bugs Bunny doesn't change.He remains the lovable character that only plays tricks on those who deserve it most.



How old is the cartoon character Bugs Bunny？ ______

A. 75.
B. 81.
C. 83.
D. 100.

What can we learn about Bugs Bunny from the text？ ______

A. He is Number One on the Hollywood Walk of Fame.
B. His face was printed on more than 150 postage stamps.
C. He starred in dozens of films and operas around the world.
D. He was elected to be the greatest cartoon character by TV Guide.

What makes Bugs Bunny so popular around the world？ ______

A. His positive personality.
B. His imaginative tricks.
C. His moving performances.
D. His physical characteristics.

What do directors think of Bugs Bunny？ ______

A. An unreal cartoon figure.
B. A theme of their creation.
C. A person with a lively character.
D. An imagination of lovely children.

Major cities across the country,from Washington D.C.to Los Angeles,are heating up.The downtown parts of Phoenix can be up to 15 degrees warmer at night than its suburb（郊区）.During the day,the street can reach over 160 degrees,hot enough to cook an egg.Unsurprisingly,walking across such a hot street to get to work,school,and do your daily work takes its toll on your health.
Local governments have turned to planting trees to help stop rising temperatures in city areas.These tree planting efforts are usually announced with much showing off but are not as simple as planting a few trees and calling it a day.There's typically this sort of blind faith that trees will provide all of wonderful social benefits.But the environmental benefits that trees provide depend entirely on context.Tree planting plans may not lead to the cooling joy we desire in city areas.
While tees,theoretically,are a "green" solution to unbearable summer city weather,in practice,many problems arise,namely keeping track of just how many trees have already found their roots and convincing land owners to keep planting trees along their personal property（私产）.In some cases,cities are already doing a good enough job that they are running out of space,like in Washington,D.C.where they are currently at 38 percent canopy （树冠）coverage but are hoping to raise coverage up to 40 percent.But the biggest problem is that public area alone isn't enough for new trees in Washington D.C，as well as in cities like Phoenix and Los Angeles,and now,citizens will have to plant trees on personal property to help reach their canopy coverage goals.In many cases,that means landowners need to take care of those trees since they technically don't belong to the city itself.
At the end of the day,trees are a good starting point,but we still have so much to learn about how well they work to cool down our hottest cities.



What does the underlined word "toll" in paragraph 1 mean？ ______

A. Cost.
B. Turn.
C. Time.
D. Place.

What is the author's attitude to planting trees to cool cities？ ______

A. Unconcerned.
B. Dissatisfied.
C. Supportive.
D. Confident.

What is the biggest problem of planting trees in cities？ ______

A. Skills of planting trees.
B. Space for planting trees.
C. The high canopy coverage.
D. The unsure tree ownership.

What can be the best title for the text？ ______

A. Heating Cities in the United States
B. A "Green" Solution to Climate Change
C. A Typical Blind Faith in Planting Trees
D. Problems of the Measure to Cool Hot Cities

Bats have long been one of the most feared creatures in the animal kingdom.Many pop culture associations with them are related to vampire （吸血鬼） men tempting women in order to suck their blood or witches putting evil curses on innocent individuals.
Although these associations are complete misunderstandings,bats do have a dark side as a dangerous disease carrier.These flying mammals can carry a number of deadly diseases such as rabies （狂犬病） and more recently Ebola.This has led many to wonder why we should even care about them.
Sure,there is good reason to be exceptionally cautious if you come into contact with bats.However,there is no denying the fact that bats play a significant role in keeping a balanced ecosystem.
Many organic farmers have learned about the benefits of having bats nearby to help manage the pests that show up without pesticides （杀虫剂）.One brown bat — about the size of a human thumb can consume about 600 mosquitoes and other unwanted insects within an hour.They make for a fantastic,almost essential,addition to pest management on any farm.
Even large government organizations have realized the economic benefits of bats.The United States Geological Survey estimates that bat contributions to pest management save the country at least 3.7 billion dollars per year.Without them,we would likely experience a sharp drop in food production,which would eventually make its way into our weekly grocery bills.
As if this were not enough of an ecosystem service we receive,bats are also of great importance to a variety of plant species that are preferential to its pollination（传粉）.Otherwise,these plants would decrease their ability to reproduce by at least 50 percent.
A number of plant products consumed by humans fall into this preferential pollination category.Some popular foods include mangoes,bananas,peaches and guavas.Additionally,the agave（龙舌兰） plant,which is used to make tequila （龙舌兰酒），is completely dependent on bat pollinators for reproduction.
Bats are major contributors to our society.They are in the best interest of the international community to protect and even to promote.Amid significant fears housed by the general public,the fact is that we need them more than most of us imagine.



Why should we be cautious when we contact bats？ ______

A. They carry diseases.
B. They are aggressive.
C. They bring bad luck.
D. They stay in the dark.

What are Paragraph 4，5，6 and 7 mainly about？ ______

A. Our care about bats can never be too much.
B. Farming is simply impossible without bats.
C. Mosquitoes are a big threat to farming.
D. Bats make unusual contributions to us.

Who are the target readers of the passage？ ______

A. The pop culture lovers.
B. The general public.
C. The mass farmers.
D. The environmentalists.

What can be a suitable title for the passage？ ______

A. Bats Are Totally Harmful
B. Creatures Do Wonders
C. Protection Is Under Way
D. We Humans Need Bats

Women Who Changed Science Forever This International Women's Day,we're celebrating three women who changed the face of science forever.
Ellen Ochoa
Ellen Ochoa is an American engineer and retired astronaut.She was the first Latina woman to fly in space as part of the crew of the shuttle Discovery in 1993.Ochoa attended San Diego State University and then continued her education at Stanford.Ochoa regards her mother,whose passion for learning kept her in part-time college courses all through Ochoa's childhood,as an important influence on her career.
At the end of her flying career,Ochoa had traveled nearly 1，000 hours in space.From 2012 to 2018，Ochoa served as the director of Johnson Space Center in Houston,Texas,only the second woman to head up NASA's human spaceflight headquarters.
Mamie Phipps Clark
Mamie Phipps Clark was an American social psychologist（心理学家），who specialized in child development in black children.Born in Arkansas,Clark drew on her early experiences as a black child in the segregated（种族隔离的）American South to help children growing up with the same iniquities.
Clark stated at Howard University in 1934，and went on to complete a PhD in psychology.She and Kenneth,now her husband,were the first two black people to earn PhDs at Columbia.With their funding,she started the famous Doll Test,which showed the negative effects of school segregation on black children.
Anandibai Gopalrao Joshee
Anandibai Jpshee was to become India's first woman physician with a medical degree.When she was young,her father strayed（偏离）from the traditional Hindu belief that women should not receive education and encouraged her to go to school.When she was fifteen,she was determined to study medicine,a choice likely influenced by the loss of an infant son and surviving a serious illness herself.At the Woman's Medical College,Joshee studied devotedly,hoping to return to India to serve other Indian women.
She died in February 1887 at the young age of twenty-one.Despite her short life,Joshee's accomplishments were remarkable for an Indian woman,and her achievements were enough to open the door for other Indian women to quickly follow.



In Ochoa's idea,what influences her most in her career？ ______

A. Her part-time job in a college.
B. Her first flight in space in 1993.
C. Her mother's desire for knowledge.
D. Her experience in NASA headquarters.

What is Phipps Clark famous for？ ______

A. Having a PhD in psychology.
B. Fighting against racial discrimination.
C. Starting the test on the growth of children.
D. Devoting herself to the founding of equalities.

What do the three great women have in common？ ______

A. They specialized in similar research fields.
B. They all experienced inequality in education.
C. They were pioneers changing our belief in women.
D. They were scientists influencing our way of learning.

Which of the following word best describes the three women？ ______

A. Dedicated.
B. Modest.
C. Creative.
D. Caring.

ECycling refers to the recycling of electronic items,which are becoming a common problem in American home and throughout the world.The EPA，or Environmental Protection Agency,has actually started a program to help and motivate the recycling of electronics.
To get the program to the regional and neighborhood levels,the EPA directed "Plug-In to eCycling Partners." These partnerships support electronic reusing programs in individual communities.They provide local governments,retailers and manufacturers with opportunities to reuse and recycle their items.Those who make and offer electronic devices then promote programs and opportunities for consumers to reuse their second-hand electronic products.One of the EPA's goals is to enlighten customers about why the recycling of electronics is so important.They likewise wish to make eCycling chances easily accessible to specific consumers and their family electronics.According to the EPA，the eCycling program has actually been quite successful.In 2008，the EPA collected 66.5 million pounds of electronic devices through their Plug-In Partners.
Local governments have actually likewise got on board and passed laws intended to handle used electronic devices.Huge corporations have actually introduced eCycling programs at their local retail stores.One seller offers customers small,medium and big boxes for sale,which the customers then load with used electronics and go back to the store.Typically,customers bring their recyclable electronics to a location.When the electronic items are gathered by the EPA（typically this is done by the Partners），they are reused or recycled.
Reused items are repaired and refurbished,and passed on to others as a contribution.You can repair or recondition your very own electronic devices too,extending the life of the items and conserving the energy of making new materials.Reusing electronic devices includes making use of the products and pats of the items.These materials and parts are then made use of to produce another item.This is more efficient than making items from new materials.
Some items that are commonly eCycled consist of televisions,computer monitors,printers,notebook computer,keyboards and cable televisions.Less usual items include copying machines,CDplayers,voice mail machines,computer hard drives,mobile telephones,remote controls,radios,batteries,telephones,facsimile machines and computer games.Occasionally,electronic items such as microwaves,fans,vacuums,smoke alarms,and toasters are eCycled.
As the eCycling program continues,you or your organization may want to get involved.Check the EPA's internet site（www.epa.gov）for regional eCycling programs,or for details on how your company can participate.Their website has links to organizations that are taking part in the eCycling program.



The EPA brought about "Plug-In to eCycling Partners" to ______ .

A. make and offer electronic devices to consumers
B. make customers understand the importance of eCycling
C. make the program accessible to local regions and communities
D. make it possible for consumers to reuse their used e-products

The Plug-In Partners are mainly engaged in ______ .

A. repairing electronic device
B. gathering recyclable electronics
C. reusing second-hand e-products
D. offering customers different boxes for sale

What can we infer from the passage？ ______

A. People can sell their reused items on the Internet.
B. Individuals can't take part in eCycling programs.
C. Devices of computers are well eCycled.
D. Not every electronic item can be eCycled.

What is the main purpose of this passage？ ______

A. To introduce a new way to save costs.
B. To teach customers how to recycle electronics.
C. To attract people to join in the eCycling programs.
D. To call on local governments to support Plug-In Partners.

At any moment,about half the world's population is wearing denim（牛仔布）clothes.But few realize tiny bits of denim have been adding up to a surprising amount of pollution in water,as a new study shows.
Sam Athey,one of the study's authors,says,"Even though denim is made of a natural material—cotton,it contains chemicals." Cotton fibers were treated with many types of chemicals,she notes.Some improve its durability and feel.Others give denim its distinctive blue color.
Athey and her team washed jeans and found that about 50，000 microfibers came off from each pair per wash.Not all of those fibers make their way into the environment.Wastewater treatment plants catch about 83 to 99 percent of them.Catching 99 percent may sound pretty good.But one percent of 50，000 is still 500 fibers per wash.And since every pair of jeans is washed again and again,it still adds up to lots of microfibers entering the water environment.
Denim microfibers showed up in sediment（沉淀物）from the Great Lakes.More of these fibers polluted a series of shallow lakes in southern Ontario.They even turned up in sediment from the Arctic Ocean in northern Canada.The team found denim accounted for 12 to 23 percent of microfibers in the sediment.There were other microfibers too.But the team focused on denim because so many people wear jeans.
"Everyone wears jeans so they could be our largest input of microfibers into our streams and soils," Athey says. "An easy way to limit that is by washing our jeans less often." Athey grew up thinking she should wash her jeans after wearing them every couple of times,but most jean companies recommend washing them no more than once a month. "The solution is not that you shouldn't wear jeans," she says. "We need to buy fewer denim clothes and only wash them when they truly need it."



Which of the following is TRUE according to the passage？ ______

A. Chemicals are contained in natural cotton.
B. Chemicals can make denim colorful.
C. Chemicals prevent fibers from falling.
D. Chemicals can make the life of denim longer.

What does the underlined word "them" in Paragraph 3 refer to？ ______

A. Denim.
B. Sediment.
C. Microfibers.
D. Chemicals.

What does the author mainly want to tell us through Athey's words ？ ______

A. To avoid wearing jeans.
B. To reduce denim consumption.
C. To wash jeans more often.
D. To limit input in denim production.

In which section of a magazine might the text be found？ ______

A. Science.
B. Entertainment.
C. Tourism.
D. Geography.

Turning on the air conditioning to its highest setting can bring sweet relief.But your resulting energy bill？Not so much.What if your home could stay cool all on its own—no electricity required？
That's the prediction of Yi Zheng's new invention.The associate professor of mechanical and industrial engineering at Northeastern University in Boston has created a sustainable material named "cooling paper" that can be used to make buildings or other objects able to keep cool without relying on conventional（常规的） cooling systems.Not only does the light-colored material reflect hot solar rays away from the building,it also absorbs heat out of the inside,too—heat that is emitted from electronics,cooking,and human bodies.
Zheng got the idea when he looked at a bucket full of used printing paper,recalling "How could we simply transform that waste material into some functional energy material？" With the help of a high-speed blender（搅拌机） from his home kitchen,Zheng made a mixture out of paper waste,mixed with the material that makes up Teflon（聚四氟乙烯）.Then he formed it into water-proof "cooling paper" that could coat homes.The cooling paper can reduce a room's temperature by as much as 10 degrees Fahrenheit （6℃）.
The cooling paper isn't just co-friendly in its ability to reduce your energy footprint,but also recyclable.The material can be used,exposed to solar radiation,weather,and varying temperatures,then reduced to a mixture again and reformed without losing a bit of its cooling properties.Zheng says. "We thought there would be maybe 10 percent,20 percent of loss,but no."
Zheng doesn't just aim to reduce your energy bills through his research.He also hopes that his work will help fight against climate change. "The starting point is to reduce the use of carbon-based materials and also to reduce global warming," Zheng says.



What is paragraph 2 mainly about？ ______

A. The prediction of the new invention.
B. The function of the new material.
C. The difference of the new invention.
D. The creation of the cooling paper.

Which of the following best describes Zheng's idea？ ______

A. Boring.
B. Demanding.
C. Creative.
D. Unrealistic.

What's the biggest advantage about cooling paper？ ______

A. It could keep the room cool without electricity.
B. It is based on traditional system.
C. It can barely take in the heat on its own.
D. It can not resist water.

From the last two paragraphs,we know the cooling paper ______ .

A. can predict the weather
B. greatly affects climate change
C. has replaced conventional material
D. is promising in environmental protection