1 . Lying in the Mexican state of Oaxaca, the fishing village Huatulco is home to nine bays, 36 beaches and thousands of baby turtles that apparently needed me. I had three open days on my calendar, and a desire to save some turtles. And so, away I went to Huatulco with Wildcoast, a group of champions-for-change who were protecting coastal and marine ecosystem in the U. S. and Mexico.
I was taken to La Escobilla to experience Wildcoast in action. Just one hour north of Huatulco, this protected beach is where mass turtle nesting happens. This natural phenomenon lasts just four days during rainy season, hundreds of thousands of female sea turtles swinging their way ashore to lay their eggs.
Between threats of dogs, crabs, development and oil spills, the little creatures have the whole world against them. As recently as 2002, turtles hunting was not only a common practice, but an important part of the culture and diet in the Oaxaca communities. Luckily, Wildcoast rescues turtle eggs and recreates habitats by monitoring temperatures and humidity. Thanks to their efforts, the sea turtles have made a major comeback, with now over 72 million turtles being born on the beaches that Wildcoast protects.
I got to hold 50 of the tiny creatures in a bowl. Despite an average laying of 100 eggs, just one in 1, 000 baby turtles will make it to adulthood. Gazing into the bowl, I so badly wanted them to taste the sea and find shelter somewhere deep in the ocean. Finally, it was time to liberate those little creatures. Out spilled the creatures, some moving full steam ahead while others barely paddled in place. Literally, hundreds of them began to spread out across the beach.
With each set of waves, we witnessed the survival of the fittest, some pushing past the whitewash while others crashed back to shore. Their fight for life made my eyes wet. A flock of birds were ready to dive into the sea for their moving targets. “One in 1, 000.” Nature was cruel and compassionate at the same time. After 30 long minutes, the last creature made his way to the sea.
1. The baby turtles are threatened by various factors except ________.| A．the cruel hunters | B．the rapid development |
| C．the extreme weather | D．the oil-polluted ocean |
| A．With slow pace and fear. | B．With all energy and enthusiasm. |
| C．With full caution and curiosity. | D．With great satisfaction and responsibility. |
| A．One baby turtle in 1,000 can make his way to the sea. |
| B．Thousands of baby turtles were crashed back to shore. |
| C．The struggle of baby turtles for life touched the author. |
| D．Baby turtles can hardly survive the harsh living conditions. |
| A．Think twice before you leap. | B．God helps those who help themselves. |
| C．Cease to struggle and you cease to live. | D．When the buying stops, the killing can too. |
2 . The behavior of beavers and other animals has often inspired expressions in English. If someone is very industrious or hard-working in tackling many things at once, we can say the person is “as busy as a beaver.” This phrase hints at one of the characteristics of these wild animals—they are indeed active creatures.
With their large teeth, which are orange due to iron in the tooth enamel (牙齿的珐琅质), beavers can cut down trees and change their environments like no other animals except humans. They use these fallen trees to build dams, creating safe, watery environments. The busy beavers build homes — called lodges — in the ponds created by the dams. The only way to get in and out of lodges is by entering an underwater opening of the structures. This offers beavers protection from predators such as bears, wolves, or coyotes.
It’s also interesting to note that beavers have another reason for cutting down trees aside from building dams. Beavers can digest cellulose, so wood is a significant food source for them, with their diet 15 also consisting of leaves and aquatic plants. Chewing on trees also helps beavers keep their teeth sharp, making it easier for them to keep chopping down trees.
Of course, no discussion about beavers would be complete without mentioning their most noticeable feature their large, flat tails, which have different uses. One is that they act as a rudder, helping them steer in the water. Another is that the animals pound their tails on the water to warn other beavers of danger. Since beavers work so hard building their homes and warning others of potential harm, it’s no surprise that busy as a beaver is a common phrase.
1. Which of the following usages of “as busy as a beaver” correct?| A．My cat is as busy as a beaver since it always lies on the sofa. |
| B．This kind of tree is as busy as a beaver because it takes hundreds of years for it to be used as timber. |
| C．Hanna is having a cup of coffee and listening to music in the living room. She is truly as busy as a beaver. |
| D．Oliver is responsible for two projects and has to train the three new employees, so he has been as busy as a beaver recently. |
| A．What countries beavers are found in. | B．How beavers keep themselves safe. |
| C．The animals that threaten beavers. | D．The food that beavers eat. |
| A．The wood is very strong. |
| B．The water from dams helps beavers digest wood. |
| C．Dams make it harder for other animals to catch. |
| D．Dams provide beavers with lots of water to drink. |
| A．Tail | B．Teeth | C．Paw | D．Head |
3 . Imagine you need milk, so you go to the grocery store to pick some up, only to find there are dozens of options. These days, you have to make a decision on not only the percentage of fat you want, but also what source you want your milk to be coming from: cows, soybeans... You have no idea what milk to pick. There are so many choices that you are confused.
This phenomenon is known as the paradox (悖论) of choice and it is becoming a concern in the modern world, where more and more options are becoming easily available to us. While we might believe that being presented with multiple options actually makes it easier to choose one that we are happy with, and thus increases consumer satisfaction, having too many options actually requires more effort to make a decision and can leave us feeling unsatisfied with our choice.
The idea was popularized by American psychologist Barry Schwartz when he published his book, The Paradox of Choice: Why More Is Less. Schwartz, who has long studied the ways in which economics and psychology intersect (交叉), became interested in seeing the way that choices were affecting the happiness of citizens in Western societies. He identified that the range of choices that we have available to us these days is far greater than that people had in the past; however, consumer satisfaction has not increased as much as traditional economics theories might expect.
Schwartz identified that the paradox of choice carries the most consequence for people that are maximizers. Maximizers, unlike satisficers, are concerned with making the best choice instead of simply making a choice that they are happy with. When there are many options available to maximizers, it becomes harder for them to determine which is the best, which can cause them to feel a great deal of regret after they have made a choice.
Instead of believing that freedom of choice is unlimited, Schwartz advocates that the role of psychology and behavioral economics should be to find the kind of limitations on freedom that can lead to the greatest level of happiness within society.
1. What’s the author’s purpose in mentioning buying milk in paragraph 1?| A．To lead in the topic. |
| B．To draw a conclusion. |
| C．To show that we have more choices when shopping. |
| D．To indicate that people pay greater attention to health when shopping. |
| A．More options mean less satisfaction. |
| B．Consumer satisfaction has greatly increased. |
| C．People are happy with more choices. |
| D．Modern people are happier than their ancestors. |
| A．They aim for the very best. | B．They tend to follow their feelings. |
| C．They often regret their decisions. | D．They have trouble making a decision. |
| A．Hold on to their beliefs. | B．Accept their own behavior. |
| C．Give up freedom. | D．Limit their own choices. |
4 . Even when you have confidence in yourself, your goals will sometimes seem out of reach. When that happens, get hold of the people who
When I was younger, I
Early in my
Even now, I
| A．refer to | B．depend on | C．learn from | D．believe in |
| A．quit | B．struggled | C．regretted | D．argued |
| A．responsibilities | B．dreams | C．opportunities | D．doubts |
| A．stopped | B．admitted | C．allowed | D．considered |
| A．tracked | B．recommended | C．accompanied | D．encouraged |
| A．serious | B．possible | C．hard | D．necessary |
| A．request | B．unwillingness | C．inability | D．attempt |
| A．difficulties | B．options | C．aims | D．standards |
| A．career | B．experiment | C．business | D．recovery |
| A．foolishly | B．simply | C．wisely | D．bravely |
| A．original | B．familiar | C．typical | D．positive |
| A．looking into | B．taking down | C．dealing with | D．pointing out |
| A．introduce | B．remind | C．guarantee | D．warn |
| A．experience | B．describe | C．compare | D．limit |
| A．probably | B．fortunately | C．obviously | D．importantly |
5 . Katalin Karikó and Drew Weissman, who together identified a slight chemical change to messenger RNA,were awarded the Nobel Prize in Physiology or Medicine this year.
Dr. Karikó, the 13th woman to win the prize, had come to the United States from Hungary two decades earlier when her research program there ran out of money. She was preoccupied by mRNA, which provides instructions to cells to make proteins. Defying the decades old belief that mRNA was clinically unusable, she hold the view that it would stimulate medical innovations.
She and Dr. Weissman had their first chance meeting over a copy machine at the University of Pennsylvania in 1998. At the time, Dr. Weissman was desperate for new approaches to a vaccine (疫苗) against HLV, which bad long proved impossible to defend against. A physician who had tried and failed for years to develop a treatment for AIDS, he wondered if he and Dr. Karikó could team up to make an HIV. vaccine.
For years, they were at a loss. Mice vaccinated with mRNA became inactive. Countless experiments failed. They wandered down one dead end after another, But eventually, the scientists discovered that cells protect their own mRNA with a specific chemical modification (修饰). So they tried making the same change to mRNA manufactured in the lab before vaccinating it into cells It worked.
At first, other scientists were largely uninterested in taking up that new approach to vaccination. But two biotech companies soon took notice: Moderna, in the United States, and BioNTech, in Germany. Then the coronavirus emerged. Almost instantly, Drs. Karikó and Weissman’s work came together with several factors of different research to put vaccine makers ahead of the game in developing shot.
Brian Ferguson, an immunologist at the University of Cambridge, said. “The work of Katalin Karikó and Drew Weissman in the years prior to 2020 prevented tens of millions of deaths and helped the world recover from the worst pandemic in a century. They richly deserve this recognition.”
1. The underlined word “defying” (paragraph 2) is closest in meaning to “ ”.| A．challenging | B．confirming | C．re-emphasizing | D．stating |
| A．They teamed up for the treatment for AIDS in Hungary. |
| B．They protected their mRNA with a chemical modification. |
| C．They persevered until they made a change to lab-made mRNA. |
| D．They manufactured mRNA in mice despite their countless failures. |
| A．they took no notice of others’ ignorance |
| B．they caught attention of two biotech companies |
| C．their work helped avoid the loss of countless lives |
| D．their work prevented the outbreak of the pandemic |
| A．Chemical Changes Identified in the Pandemic |
| B．Approaches Adopted to Defend Against HLV |
| C．Nobel Prize Awarded to Covid Vaccine Pioneers |
| D．mRNA Manufactured in a University Lab in USA |
6 . It’s often said that we human beings can dream in a foreign language. Could dreaming in a foreign language improve our memory? Does dreaming in a foreign language mean we are making progress in learning that language?
Before we look at multilingual (多语言) dreams, first we need to look at sleep. The connection between sleep and language can be applied to how we learn any language, including our native language. Even adults still learn about one new word every two days in their first language. But, if we are going to remember that new word better, what matters is that we need to connect it with what we have learned. And in order to do that, we “need to have some sleep”, says Gareth Gaskell, a professor at the University of York.
It’s during sleep that the integration (整合) of old and new knowledge happens. At might, one part of our brain — the hippocampus — takes whatever new information it receives during the day and passes it on to other parts of the brain to be stored. The role that dreams play in this night-time learning process is still being studied, but “it’s entirely possible that during multilingual dreams, the brain is trying to connect the two languages”, says Marc, a researcher at a university in Bern, Switzerland.
So having multilingual dreams could mean that our brain is trying to remember a new word or phrase. However, it could also have an emotional (情感) significance. Danuta, a professor of psycholinguistics at the University of Silesia in Poland, suggests that multilingual dreams can express “fears or wishes” around learning a foreign language, including the wish to be a local speaker or to be accepted within a certain community.
We clearly still have a lot to learn about multilingual dreams, but one thing seems certain: if you’re trying to learn a new language, you can sleep on it.
1. Why does the author mention questions in paragraph 1?| A．To compare different ideas. | B．To introduce the main topic. |
| C．To present different types of dreams. | D．To discuss the human language ability. |
| A．The other new words. | B．The native language. |
| C．The gained knowledge. | D．The speaking practice. |
| A．They may influence people’s sleep quality. | B．They can reflect language-learning feelings. |
| C．They are the best option to learn a language. | D．They help to clear up the useless information. |
| A．A novel. | B．A diary. | C．A guidebook. | D．A magazine. |
7 . If English means endless new words, difficult grammar and sometimes strange pronunciation, you are wrong. Haven’t you noticed that you have become smarter since you started to learn a language?
According to a new study by a British university, learning a second language can lead to an increase in your brain power. Researchers found that learning other languages changes grey matter density (灰质密度). This is the area of the brain which processes (加工) information. It is similar to the way that exercise builds muscles. The study also found the younger people learn a second language, the greater the effect is.
A team led by Dr. Andrea Mechelli, from University College London (UCL), took a group of Britons who only spoke English. They were compared with a group of “early bilinguals” who had learnt a second language before the age of five, as well as a number of later learners.
Scans showed that grey matter density in the brain was greater in bilinguals than in people without a second language. But the longer a person waited before mastering a new language, the smaller the difference was.
“Our findings suggest that the structure of the brain is changed by the experience of learning a second language,” said the scientists. It means that the change itself increases the ability to learn.
Professor Dylan Vaughan Jones of the University of Wales, has researched the link between bilingualism and maths skills. “Having two languages gives you two windows on the world and makes the brain more flexible.” he said. “You are actually going beyond language and have a better understanding of different ideas.”
The findings were matched in a study of native Italian speakers who had learnt English as a second language between the ages of two and thirty-four. Reading, writing, and comprehension were all tested. The results showed that the younger they started to learn, the better. “Studying a language means you get an entrance to another world,” explained the scientists.
1. Why does the writer mention “exercise” in the second paragraph?| A．To make people believe language learning is helpful for their health. |
| B．To suggest language learning is also a kind of physical labor. |
| C．To prove that one needs more resources when he/she is learning a language. |
| D．To tell us that learning a language can train your brain effectively. |
| A．The ability of learning a second language is changing all the time. |
| B．The earlier you start to learn a second language, the higher the grey matter density is. |
| C．The experience of learning a second language has a bad effect on brain. |
| D．There is no difference between a later second language learner and one without a second language. |
| A．early learning of a second language helps in studying other subjects |
| B．learning a second language is the same as studying maths |
| C．Italian is the best choice for you as a second language |
| D．you’d better choose the ages between 2 and 34 to learn a second language |
| A．Language learning is closely connected with maths study. |
| B．Man has a great ability of learning a second language. |
| C．Studying a foreign language can improve man’s ability to think. |
| D．The study done by the researchers from UCL is failed finally. |
8 . The Mona Lisa is the famous Leonardo da Vinci painting of a woman with a mysterious smile. This week, the painting gave up a secret.
Scientists using X-rays to examine the chemical structure of a small part of the painting discovered a technique Leonardo used in the work. An oil paint used for it was a special, new chemical mixture, which suggests that the Italian artist was in an experimental mood when he worked on the painting in the 16th century.
“He loved to experiment, and each of his paintings is completely different technically,”said Victor Gonzalez, a chemist who has studied the chemical element (成分) of several works by Leonardo and other artists. The researchers found a rare lead compound (铅化合物) — plumbonacrite, in Leonardo’s first layer of paint. The discovery proved that da Vinci most likely used lead oxide to thicken and help dry his paint. The paint in the study is about the thickness of a human hair, lying in the top right area of the painting.
The scientists looked into its atomic structure using X-rays, moving particles at the speed of light, permitting researchers to look deeper into the paint structure. “ Plumbonacrite is really a fingerprint of his recipe, as it’s the first time we can chemically confirm it,” Gonzalez said.
Dutch artist Rembrandt may have used a similar mixture when he was painting in the 17th century. Gonzalez and other researchers have found plumbonacrite in his work, too. Leonardo is thought to have put lead oxide powder, which has an orange color, in the oil to make it thicker and dry faster. “What you will get is an oil that has a very nice golden color,” Gonzalez said. “It flows more like honey.”
But the Mona Lisa — said by the Louvre to be a portrait (肖像) of Lisa Gherardini, the wife of a Florentine silk businessman — and additional works by Leonardo still have other secrets to tell. “What we are saying is just a little brick in the knowledge,” Gonzalez said.
1. What’s the new discovery about the Mona Lisa?| A．A new explanation of the secret smile. |
| B．A new chemical element used in the painting. |
| C．The secret of the woman in the painting. |
| D．The structure of the paint da Vinci used. |
| A．Open secret. | B．Widespread use. | C．Hidden element. | D．Long-term dream. |
| A．It helps to make many things into paints. |
| B．It helps to make paints easy to deal with. |
| C．It helps to keep the paintings last long. |
| D．It helps to make paintings rich in color. |
| A．It has more secrets to tell the world. |
| B．It’s the portrait of a silk businessman. |
| C．It’s well kept in bricks in the Louvre. |
| D．It has a mixture of different art styles. |
9 . Whom should you marry? Where should you live? How should you spend your time? For centuries, people have relied on their gut instincts (直觉) to figure out the answers to these life-changing questions. Now, though, there is a better way. We are living through a data explosion, as vast amounts of information about all aspects of human behavior have become more and more accessible. We can use this big data to help determine the best course to chart.
There has long been overwhelming—and often surprising—evidence that algorithms (算法) can be much better than people at making difficult decisions. Researchers have collected data on various kinds of choices people make, the information they base those choices on, and how things turn out. They have found, for example, that a simple data-driven algorithm would have been better than judges at deciding whether a defendant should stay in prison or be released; better than doctors at deciding whether a patient should undergo surgery; and better than school principals at deciding which teachers should be promoted.
The power of data analysis has been proved in the sports and business worlds, too. As made famous by the book and movie Moneyball, baseball teams found that algorithms were better than scouts (星探) at picking players, and better than managers at picking strategies. In finance, the hedge fund Renaissance Technologies dramatically defeated competitors by seeking out patterns in stock market data and using them to inform its investment strategy. Tech firms in Silicon Valley have found that data from experiments provides better insights into how to design their websites than designers could.
These are the early days of the data revolution in decision-making. I am not claiming that we can completely count on algorithms to make our lifestyle choices, though we might get to that point in the future. I am claiming instead that we can all dramatically improve our decision-making by consulting evidence mined from thousands or millions of people who faced dilemmas similar to ours. And we can do that now.
1. What’s the main idea of the passage?| A．Big data is a double-edged sword. |
| B．Data revolution will change people’s life. |
| C．Big data is helpful in making important decisions. |
| D．Algorithms behaves better than people in many fields. |
| A．court rulings | B．job promotions |
| C．operative estimation | D．teaching practices |
| A．To provide further evidence. | B．To show potential applications. |
| C．To encourage the use of big data. | D．To explain how to use algorithms. |
| A．Algorithms offer perfect advice now. |
| B．Big data will certainly cause a revolution. |
| C．Big data can make up for our lack of experience. |
| D．Algorithms are bound to be fully trusted in the future. |
10 . Liu Jichen, 23, a student from Tsinghua University, has developed a WeChat mini-program called “Clear Your Plate”. After a meal, users can open the mini-program and take a picture of their empty plates. Once the image is recognized by the AI(Artificial Intelligence), students can collect points and use them to buy gifts or purchase charity meals to children in impoverished(贫困的) rural areas.
Liu and his team, together with other organizations, launched the “Clear Your Plate” campaign in November for the third year. It has swept over 1,017 universities across the country. The one-month campaign attracted almost 1.6 million participants and collectively reduced food waste by 862 tons and carbon emissions(碳排放) by 3,337 tons.
“Technological innovation is a good way to reduce food waste,” Liu thought. He organized a team of 20 members to work on the project at the end of 2017. To solve the AI’s problem of identifying photos of empty plates, the team spent half a year collecting over 100,000 samples in canteens and restaurants. In 2018, the mini-program was officially put into operation on Oct 16, World Food Day. They then launched a campaign later that year.
“There were so many unknowns in research and development. For our team members, the biggest challenge was whether we were confident enough to complete it,” Liu said. They not only achieved their goal, but now, the mini-program has more than 5 million registered users, according to Liu. “We hope our efforts can start a new trend among the younger generation by encouraging them to cherish(珍惜) their food and develop the habit of thrift(节约),” Liu added.
1. What can we know about the “Clear Your Plate” mini-program?| A．It aims to put an end to waste and encourage thrift. |
| B．Its 6 million users are mostly students. |
| C．It helped reduce food waste by 3,337 tons. |
| D．It is an exchange of food for rewards to help poor children. |
| A．They found it tough to promote the campaign. |
| B．They felt uncertain whether they could complete the project. |
| C．They lacked professional technical support. |
| D．They had difficulty gathering enough samples. |
| A．Optimistic and demanding. | B．Generous and responsible. |
| C．Talented and humorous. | D．Creative and determined. |
| A．A guidebook. | B．A news report. | C．A book review. | D．A textbook. |
