1 . In the past decade, the use of social media has grown in a way that no one could have guessed. It has turned some teenagers into celebrities (名人) and turned the famous into the infamous, overnight.
A key feature of social media, however, is its volatility. Trends come and go, disappearing almost as quickly as they appeared. So, what were the key social media trends of 2019?
Short video apps such as TikTok and its Chinese equivalent Douyin, took the world by storm. The Telegraph reported that TikTok was ranked 8th on Apple’s App Store in April. And Douyin had more than 300 million domestic monthly active users in June, CNBC said.
Why are these short videos — which are rarely longer than a few minutes — so popular? Jiang Yige, Singapore-based analyst at FengHe Fund Management, has a theory. Short videos are “just right to fill in the little gaps in our busy schedules”, he told CNBC.
These videos — apart from being very convenient — are important to teenagers because they allow them to express themselves, according to Teen Vogue.
The sense of community that users of short video apps get is another appealing feature. Liza Koshy, a user of the US app Musically who has over 2 million followers, said that she was thrilled when anyone said that her video had “inspired” him. “It’s really cool...because I think that as short video creators that’s what we all expect,” she added.
Live streaming is another feature of our social media life that now seems as natural as sunrise. It’s a pretty neat idea: You can watch anyone, anywhere, live.
However, China has taken live streaming to a whole new level. In China, more than 100 million viewers monthly watch a live streaming video. Forbes thought that a number of factors had led to the popularity of live streams. Among them is viewers’ ability to interact while remaining anonymous.
However, the boom in social media may be having side effects too. Fake news is one serious problem it arguably causes. Material shared on these platforms is often not checked for accuracy. The most basic content can be false and can sway users one way or another. We use social media all the time; that doesn’t mean that we understand the influence it is having on us. We should be mindful of both the time we spend on it and its impact on our minds.
1. The underlined word “volatility” in Paragraph 2 possibly means “being ”.A.changeable | B.steady |
C.promising | D.violent |
A.they are very convenient |
B.they help people kill time |
C.they provide a sense of community |
D.they allow people to express themselves |
A.The information from social media is highly reliable. |
B.When it comes to social media, people know short videos the best. |
C.People can’t communicate with each other without social media. |
D.There is still much room for social media to make improvement. |
A.Rapid Development of Social Media |
B.Key Social Media Trends of 2019 |
C.Short Videos Taking the World by Storm |
D.Live Streaming — A New Feature of Social Media |
The annual Halloween arrived, during which kids dressed in traditional clothes went to neighbors’ houses to ask for candy.
Allison lived in a small town. That day after dinner, Allison put on her dress her father had just bought for her. The dress was cheap and second-hand because her family was poor. But Allison still thanked her dad and said, “Everyone will love my dress!” Then, she left for neighbors’ houses to ask for candy.
On the way, she came across Anna and her friends and wanted to join them. “No! Look at your dress! It’s ugly!” Anna said. Her friends also laughed. “Look at our dresses, especially mine! It’s new and beautiful,” Anna added. Her friends nodded, and in some way they were right. Anna’s dress was shiny and looked expensive. She always had the best clothes because her parents were rich.
Allison was shocked and sad. The kids not only disliked her dress but made fun of it. “You can’t come with us!” Anna stressed. “We would never hang out with you!” The other kids agreed and laughed. They all left to start collecting candy for the night while Allison was left alone, embarrassed in the middle of the street.
Anyway, she knew all the neighbors. She often helped around carrying their groceries and helping them with their gardens. People around there knew her. She didn’t need to hangout with Anna or her friends. “I’ll go just alone,” the little girl said to herself and started walking.
She as well as Anna and her friends walked in the same direction: towards their first neighbor Mrs Vaughan’s house. But Allison walked behind and kept her distance from them. And she stopped when Anna and her friends were near Mrs Vaughan’s house.
Just then, Mrs Vaughan looked out of her window. She noticed that Allison was being excluded by Anna and her friends. She knew it was probably because of Allison’s poor dress. She immediately felt pity for Allison, who often helped her and other neighbors. She decided to give Allison much more candy as a reward and teach Anna and her friends a lesson.
注意:1. 续写词数应为150左右;
2. 请按如下格式在答题卡的相应位置作答。
When Anna and her friends knocked on her door, Mrs Vaughan opened it.
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Anna looked up and said, “Our clothes are more beautiful! But you gave Allison more candy! Why?”
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________3D bio-printing inside the human body could be possible thanks to a new soft robot. The device features
The soft robotic arm can bend and twist and can be made at any length
The team
The ability to carry out such multi-functional procedures
4 . During my stay at the University of Michigan, one of the senior professors asked me to join a seminar on culture and emotion. In a general
When I lived in North Carolina, my new friends came over to
We think about emotions as feelings deep inside us, but in
A.analysis | B.state | C.letter | D.round |
A.understated | B.interesting | C.dramatic | D.proud |
A.set | B.fit | C.evaluate | D.recommend |
A.approach | B.situation | C.topic | D.course |
A.curiosity | B.pity | C.disappointment | D.embarrassment |
A.play | B.dine | C.work | D.perform |
A.support | B.noise | C.fun | D.arguing |
A.sank | B.melted | C.raced | D.opened |
A.harmonious | B.normal | C.strong | D.distant |
A.date | B.shape | C.place | D.sight |
A.reliable | B.good | C.serious | D.careful |
A.gratitude | B.respect | C.admiration | D.affection |
A.total | B.advance | C.detail | D.reality |
A.unbelievable | B.pure | C.invisible | D.powerful |
A.level | B.culture | C.standard | D.value |
5 . Born in 1961, Snoussi, a Frenchman, first came to China in 1983. At that time, he was a law student at Aix-en-Provence University and accompanied his father on a business trip to China.
What makes Mon Epoque unique is its authentic French identity, which guarantees a genuine French taste every day. “We are one of the few French bakeries in China that directly imports flour from France, produced in the Cognac region from French wheat.
A.This French baker was famous for his unique bakery |
B.Snoussi is keen on social activities in Ningbo |
C.The butter used is also imported from France |
D.Snoussi enjoys helping people in need |
E.This visit was a culture shock for him |
F.He named his brand Mon Epoque |
G.We had good bakeries in Ningbo |
6 . The idea that the normal human body temperature is about 37℃ was first presented by the German physician Carl Reinhold August Wunderlich in 1851. Since then, it’s become so widely accepted that it serves as a touchstone for health—a diagnostic tool used by physicians and parents as a basic indicator of whether someone is sick or well. However, it turns out that this well-established fact isn’t, in fact, correct—or, to put it more accurately, human beings have been getting cooler over the years.
Recent studies have shown that temperature records of groups of people have tended to run low compared to the accepted norm (标准), so the Stanford team, led by Julie Par-sonnet,MD, professor of medicine and of health research and policy, decided to do a more in-depth study to compare modern measurements with historical records to try to identify body temperature trends and, perhaps, uncover the reason why this cooling is happening.
For their research, the Stanford team looked at three distinct data sets from two historical periods. After going through 677,423 temperature measurements, the team found that men born in the 21st century had an average body temperature of 0.6℃ lower than that of those born in the early 19th century while modern women showed an average decrease of 0.03℃ compared to those born in the 1890s.
As to why this is happening, the researchers say that the most likely mechanism is a reduction in the human metabolic rate (代谢率) due to environmental factors: One possibility is that improvements in public health over 200 years have reduced the incidence of inflammations (炎症),which promote metabolism. This combined with people living more comfortable lives in more stable environments means that the body doesn’t have to work as hard to stay warm, so the average temperature falls.
”The environment that we’re living in has changed, including the temperature in our homes, our contact with microorganisms (微生物) and the food that we have access to. All these things mean that although we consider human beings as the same for all of human evolution, we’re not the same. We’re actually changing physiologically,” Parsonnet said.
1. What is Carl Reinhold August Wunderlich’s achievement?A.He set up standards for human health services. |
B.He predicted trends in human body temperature. |
C.He first used body temperature as a health indicator. |
D.He proposed the standard human body temperature. |
A.It shows women have a lower body temperature than men. |
B.It proves human body temperature has dropped at a faster rate. |
C.It compared historical and current human body temperature data. |
D.It suggested updating the definition of the average body temperature. |
A.The improved living conditions. |
B.The contact with other creatures. |
C.The decline in physically demanding work. |
D.The adaptation of humans to climate change. |
A.What exactly is normal human body temperature? |
B.Why does human body temperature need measuring? |
C.Human body temperature has decreased over the years |
D.Human body temperature changes with the environment |
7 . PFAS are found in nonstick pans, water-proof fabrics and food packaging. They’re called forever chemicals because of their ability to stick around and not break down. Now, using a bit of heat and two relatively common compounds, researchers have degraded (降解) the chemical in the lab.
While some scientists have found relatively simple ways of breaking down select PFAS, most degradation methods require harsh processes using intense pressure — in some cases over 22 mega-pascals — or extremely high temperatures — sometimes upwards of 1,000℃ — to break the chemical bonds.
William Dichtel, from Northwestern University in Evanston, and his team experimented with two substances found in nearly every chemistry lab; sodium hydroxide (氢氧化钠), also known as lye, and a solvent (溶剂) called DMSO. The team worked specifically on a group of forever chemicals which contain a large percentage of PFAS.
When the team combined chemicals with the lye and DMSO at 120℃ and with no extra pressure needed, the carbolic acid (羧酸) fell off the chemicals and became carbon dioxide. “What happened next was unexpected, ” Dichtel said. The loss of the acid helped degrade the chemicals into fluoride ions (氟离子) and smaller carbon-containing products, leaving behind no harmful by-products.
“It’s a neat method; it’s different from others that have been tried,” says Chris Sales, an environmental engineer at Drexel University in Philadelphia who was not involved in the study. “The biggest question is how this could be adapted and scaled up. Understanding this mechanism is just one step in undoing forever chemicals,” Sales said.
This process wouldn’t work to deal with PFAS in the environment, because it requires a concentrated amount of the chemicals, but it could one day be used in wastewater treatment plants, where the pollutants could be filtered out of the water, concentrated and then broken down.
1. What can we learn about the previous ways to break down PFAS?A.They’re eco-friendly. | B.They’ve been widely used. |
C.They’re difficult to operate. | D.They’re regarded as useless. |
A.They experimented with different solvents. |
B.They tried two very common substances. |
C.They tested every group of forever chemicals, |
D.They exposed chemicals to extreme temperatures. |
A.Environmentally-friendly reactions occurred. |
B.The carboxylic acid became carbon dioxide. |
C.No extra pressure was needed for the trial. |
D.The lye and DMSO could work at 120℃, |
A.It is difficult to deal with PFAS in the environment. |
B.This mechanism will soon be used in the environment. |
C.The method will be applied to different kinds of chemicals. |
D.More research is needed before the method is widely used. |
When Thompson was very young, his parents died. He lived a poor life with his grandmother. She took good care of Thompson and he became understanding and kind. They lived in an old house. When it rained, the house leaked and it became a nightmare to them. Thompson wanted to put tiles (瓦片) on the house so that they could survive the rainy season and the cold winter.
So Thompson started collecting disused tiles everywhere. One day, he came to a construction site about three miles from his house. Because the site was boarded up, he could only look around the outside of it. He took a stick and searched for something he could use as tiles. Suddenly, a tile appeared in front of him. He jumped for joy and rushed to pick up the tile. At that moment, a voice came from the construction site. A man with a helmet shouted, “What are you doing? Are you stealing something?” Thompson felt frightened and explained, “No, sir, I’m picking up rubbish.” The man added, “Do you treat new tiles as rubbish? It seems that you are stealing something. Just drop what you are holding and get out of here.” Thompson felt upset, but had no choice but to leave.
The next day, Thompson looked around for tiles as usual. This time he came to a place where rubbish was piled up. As it happened, it was seen by the man who Thompson met at the construction site. Actually, the man’s name was David and he was an architect. He was curious about Thompson’s behaviour and wondered if he had misjudged him the day before.
To find out what was going on, David chose to follow Thompson in silence. After an hour or so, David followed Thompson to the old house. He saw Thompson placing the tiles he had picked up on the dilapidated (破旧的) roof. David felt sorry for Thompson and realized that he had misunderstood him. David started understanding Thompson’s reason for picking up the tiles.
注意:
1.续写词数应为 150左右;
2.请按如下格式在答题卡的相应位置作答。
David decided to help Thompson.
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
In the late afternoon, Thompson and his grandmother returned home.
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
9 . Rushing over to take a picture with Mickey Mouse, Emma Sinclair, from Australia, smiled at the camera and said, “I can’t
There was another
She loved children, but she decided not to have children,
In 2 020, a
Though her treatment for the tumour remains ongoing, she has lots to
A.arrange | B.stop | C.claim | D.wait |
A.land | B.history | C.love | D.popularity |
A.match | B.reason | C.charge | D.admiration |
A.form | B.adapt | C.join | D.take |
A.did away with | B.got on with | C.came up with | D.ended up with |
A.proud | B.afraid | C.ashamed | D.certain |
A.As a result | B.On average | C.In a word | D.In general |
A.resolution | B.presentation | C.information | D.satisfaction |
A.sincere | B.lucky | C.relevant | D.traditional |
A.simple | B.serious | C.regular | D.relative |
A.lost | B.developed | C.avoided | D.hid |
A.character | B.background | C.spirit | D.movement |
A.expect | B.abandon | C.consult | D.recall |
A.works | B.reduces | C.worsens | D.improves |
A.sensitively | B.casually | C.formally | D.positively |
10 . When you walk with a backpack, do you know how the things inside move from side to side? Now scientists have figured out how to tap into that movement to produce electricity.
Picture a pendulum(摆锤) fixed to a backpack frame and stabilized with springs on either side. The pack’s weight is attached to the pendulum, so the pendulum swings side to side as you walk. Then a machine is driven by that swinging movement, and produces electrical current to charge a battery.
Volunteers carried the pack while walking on a running machine and wore masks to measure the flow of O2 and CO2. When the volunteers were walking with the slightly swinging 20-pound load, the device did not significantly affect their metabolic(新陈代谢的) rate compared to when they carried the same weight fixed in place. In fact, the energy-harvesting pack reduced the forces of acceleration they’d feel in a regular pack, which might mean greater comfort for a long hike. And the device did produce a steady trickle(涓流) of electricity. If you up the load to 45 pounds, it could fully charge a smartphone only after 12 hours. The details are in the journal Royal Society Open Science.
The device produces electricity from human movement and has been identified as a workable solution to providing a renewable energy source for portable electronic devices. It is particularly useful to those who work in remote areas, as these people often carry a lot of weight in a backpack for their exploration.
But here’s a real conundrum: the energy-harvesting device currently weighs five pounds. The researchers say that’s about four pounds too many to be a smart alternative to batteries. So they hope that more research lets them lighten the load so that they can ensure the pack charges your phone up without weighing you down.
1. What does Paragraph 2 mainly talk about?A.How the device works. | B.What the device looks like. |
C.Who the device is designed for. | D.Why scientists designed the device. |
A.It was useless for a long walk. |
B.It failed to produce steady electricity. |
C.It harvested energy as the volunteers walked. |
D.Royal Society Open Service conducted the study of the device. |
A.bond. | B.problem. | C.decision. | D.method. |
A.Finding Smarter Alternatives to Batteries | B.How Can the Movement of Backpack Help? |
C.Charging Batteries When Carrying Backpacks | D.Searching for New Ways to Charge Your Phone |