3 . A shocking 53.6 million tons of electronic waste were discarded（丢弃）last year, a new UN-backed report has revealed. The report shows that e-waste is up 21%from five years ago. This isn't surprising, considering how many more people are adopting new technology and updating devices regularly to have the latest versions, but the report also shows that national collection and recycling strategies are nowhere close to matching consumption rates.

E-waste contains materials including copper（铜）, iron, gold and silver, which the report gives a conservative value of $ 57 billion. But most are thrown away or burned rather than being collected for recycling. Precious metals in waste are estimated to be worth $ 14 billion, but only $4 billion-worth is recovered at the moment.

While the number of countries with national e-waste policies has grown from 61 to 78 since 2014, there is little encouragement to obey and a mere 17% of collected items are recycled. If recycling does occur, it's often under dangerous conditions, such as burning circuit boards to recover copper, which "releases highly poisonous metals" and harms the health of workers.

The report found that Asia has the highest amounts of waste overall, producing 24.9 million metric tons (MMT), followed by Europe at 12 MMT, Africa at 2.9 MMT, and Oceania at 0.7 MMT.

But whose responsibility is it? Are governments in charge of setting up collection and recycling points, or should companies be responsible for recycling the goods they produce? It goes both ways. Companies do need to be held accountable by government regulations and have incentives to design products that are easily repaired. At the same time, governments need to make it easy for citizens to access collection points and deal with their broken electronics in a convenient way. Otherwise, they may turn to the easiest option-the landfill.

1. What can we learn from the first paragraph?

A．What e-waste refers to.

B．Where e-waste is collected.

C．Why e-waste is increasing rapidly.

D．How many kinds e-waste includes.

2. What do the statistics in paragraph 2 show?

A．The functions of policies.

B．The great damage to environment.

C．The change of consumption rates.

D．The urgency of recovering e-waste.

3. What is the problem with recycling e-waste at present?

A．It does harm to the workers' health.

B．It lacks national policy support.

C．It hardly makes profits.

D．It takes too much time.

4. How should the problem be solved according to the passage?

A．New technology should be used to update old devices.

B．Governments and companies should take responsibilities.

C．Non-poisonous metals had better be used in e-device.

D．Citizens must play a key role in recycling e-waste.

4 . Shanghai residents （居民） passing through the city’s eastern Huangpu district earlier this month might have discovered an unusual sight a “walking” building.

An 85-year-old primary school has been lifted off the ground in its entirety and relocated using new technology named the “walking” machine.

In the city’s latest effort to protect historic structures, engineers used nearly 200 mobile supports under the five-story building, according to Lan Wuji, chief technical supervisor of the project.

The supports act like robotic legs. They’re split into two groups which in turns rise up and down, like the human step. The sensors （感应器）help control how the building moves forward, said Lan.

In recent years, China’s rapid modernization has seen many historic buildings destroyed to clear land for skyscrapers and office buildings. But there has been growing concern about the architectural heritage （遗产）loss as a result of destruction across the country.

It is true Shanghai has been China’s most progressive city when it comes to heritage preservation. The survival of a number of 1930s buildings in the famous bund district and 19th-century “shikumen”（or “stone gate”） houses in the repaired Xintiandi neighborhood has offered examples of how to give old buildings new life.

The city also has a track record of relocating old buildings. In 2018, the city relocated a 90-year-old building in Hongkou district, which was then considered to be Shanghai’s most complex relocation project to date.

The Lagena Primary School, which weighs 7, 600 tons, faced a new challenge-it’s T-shaped, while previously relocated structures were square or rectangular（长方形的）, according to Xinhua.

Experts and technicians met to discuss possibilities and test a number of different technologies before deciding on the “walking machine”, Xinhua said.

1. Why did the 85-year-old primary school have to be moved?

A．To make room for modern buildings without destroying it.

B．To meet the new requirements of the school.

C．To protect it better as it is a cultural heritage.

D．To give the old building a new life…

2. How did the primary school get moved?

A．By reducing the weight of it.	B．By using movable supports.
C．By dividing it into several parts.	D．By using robotic legs.

3. Which of the following statements may the author agree with?

A．China’s rapid modernization leads to the architectural heritage loss.

B．The move of the primary school is the first example of heritage protection.

C．The different shape of the primary school adds difficulty to its move.

D．The move of the primary school is Shanghai’s most complex relocation project.

4. Where does the passage probably come from?

A．A news report.	B．A science review.
C．A travel magazine.	D．A geography book.

5 . On the first day of fourth grade, my teacher, Mrs. Brown, told my class a story about her husband Rob, who is a brain cancer survivor. After what Mrs. Brown experienced with Robs’ illness, she decided to devote part of her life to an organization called Be head Strong, which works to support families with a member suffering from brain cancer.

Along with typical math and science, throughout the year, Mrs. Brown shared stories with us about people in Be Head Strong who had overcome some tough and unfair battles. Mrs. Brown never showed any sadness or confusion toward the disease. She instead spoke only with words of determination to find a cure. Whether news from Be Head Strong was good or bad, she always looked at the situation as an opportunity to improve and do more.

My parents taught me from a very young age that making wise choices with my money is important. I would always set aside most of my $ 2.50-a-week allowance. By the end of the school year, I had saved over one hundred dollars, $ 131.30 to be exact. One day was wondering what to do with it. I did not feel like any game or toy was worth the time I had spent saving. I thought about the stories Mrs. Brown told us, then I decided that was where I wanted my money to go.

As the last day of school approached, my mom helped me wrap the heart-shaped box full of dollars and coins. After all the other kids had left on the last day of school, I handed Mrs. Brown the present. As she opened it, I told her that I wanted the money to go to Be Head Strong to help people like Rob. She broke into tears and hugged me tightly.

People may not always realize how big of an influence one kind gesture can make. One teacher encouraged a decision in my life that has changed the way how I live.

1. What do we know about Mrs. Brown from paragraph 1?

A．She had just survived a brain cancer.

B．She lost her husband to a brain cancer.

C．She founded a non-profit organization for brain cancer.

D．She was devoted to helping people with brain cancer.

2. Which of the following can best describe Mrs. Brown?

A．Outgoing and organized.	B．Positive and delightful.
C．Enthusiastic and patient.	D．Kind-hearted and strong-willed.

3. What can we infer from the underlined sentence in paragraph 3?

A．The author thought the money was worth something more meaningful.

B．The author’s parents were strict with him in buying games and toys.

C．The author was old enough to get rid of games and toys.

D．The author had no time to pick his favorite games and toys.

4. Which can be the best title for the text?

A．A Teacher—a Role model.	B．A Teacher—A Life-long Learner.
C．An Unforgettable Science lesson.	D．A Special Teacher and Her Life Story.

6 . NASA has a new job listing,and it's no joke. The US space agency is looking for a"joker" to join their journey to Mars.

A journey to Mars is no laughing matter. On average, the red planet is 140 million miles away. A trip there would take around eight months in a small spaceship. As it is difficult to communicate, astronauts will have to wait 20 minutes for a reply when an emergency happens.

“When you're living with others in a confined space for a long time, such as on a mission to Mars, problems will happen,” said Jeffrey Johnson, a scientist at the University of Florida. This is probably why NASA wants an astronaut with a sense of humor. These people have the ability to pull everyone together.

In stressful situations, perhaps humor is a way to know we aren't alone. By laughing together, we share stress, Then we can focus on our jobs instead of just worrying.

There are other examples of team “jokers”. One example is the journey to the South Pole led by Norwegian explorer Roald Amundsen, Adolf, a cook at Amundsen' s team, was "joker". He made people laugh through the whole difficult and dangerous journey, Amundsen later wrote that Adolf was the most valuable member of the team.

But if you're hoping that your favorite TV comedian will fly to Mars, that probably won't happen. “Being funny won't be enough to land somebody the job,” Johnson said. “They also need to be an excellent scientist and engineer.” Besides, they must be in top physical condition.

1. Who might get the job offered by NASA?

A．A good cook.	B．A talented joker.
C．A humorous engineer.	D．A popular comedian.

2. What does "a confined space" in Paragraph 3 mean?

A．a small space

B．an open space

C．a secure space

D．an empty space

3. How does the author think humor can help astronauts?

A．Reminding them of their family.	B．Bringing them closer on a journey.
C．Helping them know themselves better.	D．Helping them fix professional problems.

4. Why does the author mention the example of the cook?

A．To show the importance of their food.

B．To prove the role of humor in difficult situations.

C．To argue an actor is more important than a scientist.

D．To explain a journey to the South Pole matters a lot.

7 . When Simon Cane was in the second grade, he began learning about all the ways humans have an impact on the environment and really took those classroom lessons to heart in a way that set him apart from his schoolmates at his elementary school, P. S. 81, in the Bronx. “He told me we drove too much and made too much pollution,” his dad, Jonathan Cane, told Runner’s World. So Simon convinced his parents to start hanging their clothes to dry, taking the stairs instead of elevators, and other “green” measures.

“For much of kindergarten and first grade I rode my bike to Simon’s school with him on the back,” Jonathan said. “We had a lot of fun being outdoors. We’d stop to give our dog treats and generally enjoyed it.” As Simon got bigger, though, it wasn’t practical for him to ride on his father’s back, but it also didn’t make sense to ride together — both because of safety concerns and because there was no place to put away Simon’s bike. So, most of the time they drove the 1. 5 miles to school.

But in 2019, when Simon was going into third grade, the 8-year-old came up with a new way to help the planet: running the 1. 5 miles to P. S. 81. And Jonathan promised his son he’d join him for as long as he wanted.

“We did a test run one day in August, and decided to give it a go. To be honest, I thought he’d blink (眨眼)after it got really cold or rainy, but he never did,” Jonathan said. He recalled one day when the weather was particularly bad. “It’s really raining out there today,” he told Simon. “And Simon said, ‘Well then we’re going to get wet!’ He took pride in toughing it out, and it became a really fun family routine.”

Since the start, Simon has run with his dad and their black dog, Lola, and has even inspired his mom, Nicole Sin Quee, to join in. They soon became known as “the family that runs to school”.

1. What makes Simon different from his classmates?

A．Washing his clothes by himself.	B．Taking many classes after school.
C．Raising strange questions in class.	D．Taking green measures to protect the environment.

2. How did Simon usually go to school in second grade?

A．By car.

B．By cycling.

C．By running.

D．By school bus.

3. What can be inferred from paragraph 4?

A．Simon has trouble with his eyesight.	B．Simon is really stubborn and inflexible.
C．Simon is much tougher than expected.	D．Simon didn’t get support from his father.

4. What can be the best title for the text?

A．The Best Way to Go to School

B．Father and Son Run for the Environment

C．A Teenager Keeps Running to Inspire Father

D．Three Inspiring Running Athletes to Protect the Environment

8 . Many people believe that there is one form of their language that is more correct than others.They may believe for example that British English is more correct than other varieties;or that written English is more correct than spoken English; or that standard spoken forms are more correct than dialect forms. Often this belief is supported by reference books to grammars ,usage guides or dictionaries:if something goes against a rule in a grammar,or if the word isn't in the dictionary ,it“must be wrong”. Since the reference books are most often based on observation of the standard written language, the argument is really circular: these books will naturally describe standard usage, because that is what they are for ;but this does not mean that there is anything wrong with other kinds of usage that are less often described.

A better way of looking at things is to say that usage is“correct in its place”. Standard American English is correct in America , British English is correct in Britain , spoken grammar is accepted in casual speech, and formal written grammar is employed in formal writing. So this means there is no answer to the question: “What kind of English should learners study?” It depends on their purposes. For many learners, the best model is one or other of the two main standard varieties :British or American English. Neither of these is “better”than the other ,and they are both used and understood worldwide.

People are also worried by language change. If younger people“break”the rules that older people have learnt, or use language in new ways, older people often feel disturbed: they are concerned that younger people no longer know their grammar, and that the language is going downhill. This is a needless worry :change is natural and inevitable,it cannot be stopped ,and it does not generally affect a language 's efficiency as a communicative tool. A great deal of modern English grammar would have been wrong three hundred years ago, and will perhaps be wrong again three hundred years from now.

1. What can you learn from the 1st paragraph ?

A．Learners are always confused by the reference books.

B．Usages not mentioned in the reference books are not necessarily wrong.

C．Nobody can challenge the authority of the reference books.

D．Some wrong usages can be found in the reference books.

2. What does the author imply in paragraph 2?

A．Big differences exist between British English and American English.

B．American English is better for learners than British English.

C．A learner should master all the distinctions of different English.

D．Standard English varies according to different situations.

3. Which word can replace the underlined word“inevitable" in paragraph 3?

A．avoidable.	B．certain.
C．formal.	D．temporary.

4. What is the author's attitude towards the changes of English?

A．Disturbed.	B．Concerned.
C．Indifferent.	D．Acceptable.

9 . With the rapid development of intelligent systems and new-age transit networks,life in the big cities will likely be more efficient and comfortable.

After all,more than 60 percent of the world’s population is expected to live in cities by 2050 , according to a UN report. The answer to making these cities more livable for so many people lies in creating “smart” cities. These cities will use 5G networks and the “Internet of things”(IoT) to make everyday life safer and more convenient. Some cities are already using smart technology to improve the lives of residents.

But what exactly does a smart city do? In the United States cities of Boston and Baltimore, smart trash cans can sense how full they are and inform cleaning workers when they need to be emptied. In Amsterdam, the Netherlands, traffic flow and energy usage are monitored and adjusted according to real-time data gathered from sensors(传感器)around the city. And in Copenhagen, Denmark,a smart bike system allows riders to check on air quality and traffic condition as they ride.

Smart cities will be interactive ，allowing their residents to feel like they’ re truly shaping their environment,instead of merely existing in it.“One of the most important reasons to have a smart city is that we can actually communicate with our environment in a way that we never have in the past,”said Mrinalini Ingram,head of a telecom company.

Smart cities will also allow us to save resources. By using sensors and 5G networks to monitor the use of water，gas and electricity,city managers can figure out how to distribute and save these resources more efficiently. Emissions of carbon dioxide and other air pollutants can be more closely monitored in smart cities as well.

Of course,it will take time and money to turn our current cities into the smart cities of the future. But as we’ve already seen, more cities around the world are already adopting smart technology in smart ways. China, for instance,is making investments in big cities like Shanghai and Guangzhou to make them “smarter”. It won’t be long before even more cities start to develop their own smart infrastructure( 基础设施).

1. What calls for the development of smart cities?

A．The rapid progress in 5G networks.

B．The marked increase in world population.

C．The growing number of residents living in cities.

D．The major concern over the safety of living in cities.

2. How does the writer illustrate the way smart cities work?

A．By making a contrast.	B．By telling a story.
C．By listing figures. .	D．By giving examples.

3. How do smart cities help us to protect the environment?

A．By interacting directly with our environment.

B．By keeping track of the way we usually live.

C．By ensuring no emission of air pollutants.

D．By educating residents to save resources.

4. What is the best title for the text?

A．Smart City Closer to Reality.	B．The Rise and Fall of Cities.
C．How to Save Natural Resources.	D．Ways to Feed the World Population.

10 . When Stephen Mills spotted a dusty old safe (保险箱) in a museum in Canada, he thought he'd try to crack the code (破解密码),"just like in the movies". But when he began turning the dial, he wasn't expecting a Hollywood ending.

For years, anyone who visited the Vermillion Heritage Museum in Alberta would have passed by a large, black metal box. Staff knew it had come from the long—gone Brunswick hotel and was donated to the museum in the 1990s,but its code and contents remained a mystery for decades- until Mills unexpectedly cracked the code.

Mills,who lived in Fort McMurray, Alberta, was visiting the museum with his family last month over a holiday weekend. As they wandered around the exhibits with the museum guide, Tom Kibblewhite,they spotted the safe.

Kibblewhite told the family what he told all other guests: the 900kg black box with a silver dial had remained closed for generations. For years, the safe has confused volunteers at the museum. The manufacturer was unable to provide advice on how to open its thick door.

A locksmith (锁匠) once suggested that years of inactivity might have slowed down the gears, making it inoperable. But Mills, who is a“mechanically-minded person”, asked whether he could give it a try.“Kibblewhite kept saying no one had opened it and that it was a mystery what was inside,”Mills said.“I thought this would be a great thing to do for a laugh for the kids. Maybe they can find some interesting historical things in it—like a time capsule.”

After pressing his ear against the cool metal, he began spinning the dial. With numbers ranging from zero to 60,he turned clockwise (顺时针方向地) three times to 20，counter-clockwise two times to 40 ,and then clockwise one time to 60. He was astonished to hear a click.“I jumped up and told everyone I' m buying a lottery ticket (彩票),”he said.

1. What does the underlined sentence in the first paragraph mean?

A．He didn't think he would open the safe.

B．The museum trip was like a Hollywood film.

C．He didn't want to turn the dial in the beginning.

D．It was unbelievable for him to win a lottery ticket in the end.

2. What do we know about the safe?

A．The dial on the safe was broken.

B．It was a donation from a rich businessman.

C．It has been long closed since it was brought to the museum.

D．It was one of the most valuable exhibits ever in the museum.

3. What's the author's purpose in writing the text?

A．To tell people an interesting story.

B．To inform people how to open a safe.

C．To promote the tourism to a museum.

D．To encourage people to learn mechanism.

4. What does the story tell us?

A．A safe is not always that “safe”.	B．Life is just full of surprise.
C．Success is for the prepared ones.	D．Everyone can do something great.