1 . It's a typical morning: you wake up, take a shower, brush your teeth, and then prick(刺)your arm with a tiny needle. Wait, what? Unless you have a serious disease such as diabetes,you probably haven't ever tested your own blood. But in the future, that might change.
The company Cor already sells a system for home blood testing. You stick your arm using a supposedly painless cartridge. Then you stick the cartridge into a device that looks like the base for an electric toothbrush. A few minutes later, an app on your phone offers you updated information, including your current health status and tips on what to eat and how to exercise.It's true that blood provides abundant information about a person's health. Specific tests can reveal if a person is infected with a disease or at risk for a variety of problems. But most people don't test their own blood often. Healthy young adults get blood tests approximately every five years. Cor and similar companies are trying to change the situation. They think people deserve access to more information about their health.
But not everyone is convinced."The best-case scenario(情景)here is that you lose much money and then you're reminded to get more sleep and to eat more fruits, vegetables and fish,"Pieter Cohen of Harvard Medical School told The New York Times. Plus, the results of a home blood test might be wrong. It's hard to get accurate results from a tiny amount of blood. One company, Theranos, said it could perform medical blood tests on a fingerprick's worth of blood.But the company was soon stuck in a controversy((争议)and accused of cheating because its technology didn't work as promised. Thus, there's still a long way to go before the technology becomes advanced.
1. What's the function of Paragraph 1?| A．To express feelings. | B．To raise a question. |
| C．To make a prediction. | D．To introduce the topic. |
| A．Container. | B．Operation. | C．Medicine. | D．Scan. |
| A．To collect people's health information. | B．To offer people proper suggestions. |
| C．To help people track their health. | D．To cure people of blood diseases. |
| A．Ambiguous. | B．Objective. | C．Supportive. | D．Uncaring. |
2 . Those days of sucking (吮吸) up the sides of your rapidly melting (融化) ice cream may soon be over. Researchers have discovered a natural protein that could be added to everyone’s favorite summertime snack to keep it solid for longer, according to a press release from the University of Edinburg in Scotland.
Most people know that, at its most basic, ice cream is made of milk and sugar. But it has other ingredients that give it a solid consistency (黏稠度) — a fat (often oil), air bubbles, and ice crystals. The protein that the researchers discovered, called BsIA, coats all three of them to slow down the rate at which the ice melts and the air escapes. In one study of the protein, published earlier this year, the researchers call BsIA a “raincoat” that can act as a film to keep everything inside it for just a little longer. That same quality prevents big pieces of ice crystals from forming, which can happen if you leave ice cream in the fridge for too long.
BsIA is found in bacteria called Bacillus subtilis that is common in soil, and is already present in some foods. So adding the protein to ice cream wouldn’t bring the same sorts of long-term health concerns as would artificial ingredients (人造添加剂). The researchers note that producers could also add BsIA to ice cream to reduce their fat and sugar content.
Though the researchers have published two papers about BsIA and have tested it in the lab, they are staying quiet on the most recent data they collected, as the Washington Post notes. Importantly, the researchers make no mention about how the new ingredient might affect ice cream’s taste or how much we might enjoy eating it. What’s the good of long-lasting ice cream if you don’t even like it? But it might not be too long before you can try it out for yourself; ice cream with BsIA might be available within three to five years.
1. According to the passage, what is BsIA?| A．A group of ice crystals. | B．A sort of natural protein. |
| C．A kind of man-made bacteria. | D．A type of artificial film. |
| A．Covers. | B．Produces. | C．Melts. | D．Changes |
| A．It exists widely in food. |
| B．It has the same function as sugar. |
| C．It can speed up the freezing of ice crystals. |
| D．It can slow down the melting rate of ice cream. |
| A．They can add extra flavor to food. |
| B．They are more costly than BsIA. |
| C．They may do harm to people’s health. |
| D．They can’t be mass-produced like BsIA. |
| A．There is still uncertainty in BsIA. |
| B．BsIA faces an unpromising future. |
| C．BsIA won’t affect the taste of ice cream. |
| D．Everyone likes the ice cream with BsIA. |
| A．A guidebook. | B．A magazine. | C．A novel. | D．A diary. |
3 . Norway aims to discover new resources beneath the sea, but its push into mining has raised environmental concerms.
Norway could license companies for deep-sea mining as early as 2023. That could place it among the first countries to harvest seabed metals. Copper, zinc and other metals are in high demand for electric vehicle batteries, wind turbines and solar energy centers. However, that could also place Norway on the front line of controversies over the environmental risks of mining the world’s unexplored seabeds.
Norway recently announced it was carrying out an environmental study needed to start mineral exploration and mining. Once that is completed, the govemment plans to have public comments on its environmental study and on a proposal to open areas for exploration and production by the end of 2022.
The demand for minerals is being driven by what are often called “clean” technologies. But the process of getting those minerals from the seabed could cause environmental problems.
Environmentalists including Britain’s David Attenborough have called for a temporary (暂时的) stop to deepseabed mining until more is known about how it affects sea life. The environmental group Greenpeace called for a total ban in a recent report. In another report, the High Level Panel for a Sustainable Ocean Economy, known as the Ocean Panel, also called for greater knowledge about the effects of deep-sea mining. The Ocean Panel is cochaired by Norway and has 14 member states that want to shape policy on the world’s oceans.
Norway is known as a major oil producer. But, the country of 5. 4 million people wants to find something to replace its top industry that is better for the environment and can grow in the future.
The move toward deep-sea mining follows three years of expeditions(探险). The Norwegian Petroleum Directorate, which carried out the work, said it found copper, zinc, cobalt, gold and silver. The expeditions also discovered large armounts of lithium and the rare earth metal scandium used in electronics and metal mixtures.
1. What does the underlined word “controversies”in paragraph 2 probably mean?| A．Power. | B．Benefits. |
| C．Arguments. | D．Popularity. |
| A．Decide mining areas. | B．Ask for people’s opinions. |
| C．Start seabed mining at once. | D．Take action to protect nature. |
| A．Unsupportive. | B．Positive. |
| C．Unclear. | D．Uncaring. |
| A．Earning more money. | B．Controlling the areas. |
| C．Developing clean energy. | D．Learning about sea resources. |
4 . Liu Xiangping, a Chinese-Canadian artist and stamp designer, recalls his remarkable experiences in designing the stamps which develop friendship between China and Canada.
It was 1997, the year when Hong Kong was returned to China, and Canada Post, along with the then-Hong Kong Postal Administration and China, celebrated the Chinese New Year with a stamp.
In January 2017, special 45-cent stamp designed by Liu and two other Chinese Canadian artists was issued. Since then, Canada Post has been issuing zodiac(属相) stamp for the Chinese Lunar New Year each year. “Many traditional customs related to the Chinese New Year are indeed transnational(跨国的). They are beyond political and cultural differences. They powerfully reflect the close connections of the overseas Chinese to their ethnic roots,” Liu said.
Liu said that what he was most proud of last year was the creation of a stamp for China Post on the theme of fighting the COVID-19 pandemic.
When China Post issued a set of special stamps in 2003 to mark the victory over SARS, Liu was one of the designers.
In January 2020, Liu left Toronto for Beijing. With the influence of COVID-19 drawing the attention of the entire country, China Post invited him once again to be one of two chief designers of a set of anti-pandemic-themed stamps.
On May 11, 2020, China Post issued the two stamps. One featured the phrase “Pursue Together, Combat the Pandemic” to pay admiration and respect to the Chinese people in the fight against the virus. Liu said the most important principle for the designs is to present the Chinese spirit of solidarity(团结) as well as that of human nature in tough times. “I tried to express the sense of perseverance, anxiety and sorrow at the same time through people’s eyes,” Liu said.
To memorize the centennial(百年纪念) of Norman Bethune’s birth and his accomplishments, Canada and China jointly issued a pair of commemorative stamps in 1990. Bethune devoted his life to medicine and humanitarianism in China in the late 1930s. Jean Morin and Wanda Lewicka of Canada designed the stamps, and Liu illustrated(加插图)them.
“The stamps are the product of close cooperation and cultural exchanges between Canada and China. They symbolize the fundamentals(基本原则) of the friendship between the two countries,” said Liu. “We’ll never forget that Chinese and Canadian people were committed to the common values of justice and peace in WWⅡ.”
1. When did Canada Post begin issuing a zodiac stamp for the Chinese Lunar New Year?| A．In 1997. | B．In 2003. | C．In 2017. | D．In 2020. |
| A．Wonderful. | B．Difficult. | C．Busy. | D．Common. |
| A．He designed a stamp to celebrate the Chinese New Year with a stamp in 1997. |
| B．He designed a stamp to honor the Chinese people fighting against the pandemic |
| C．He designed a set of special stamps in 2003 to mark the victory over SARS. |
| D．He designed the stamps to memorize the centennial of Norman Bethune’s birth. |
| A．Stamps develop friendship between Canada and China. |
| B．Stamps show cultural exchanges between Canada and China. |
| C．Liu Xiangping is a Chinese-Canadian artist and stamp designer. |
| D．Liu Xiangping enjoys designing stamps reflecting Chinese customs. |
5 . Motion sickness is an uncomfortable feeling. The sickness it causes can strike people on an airplane, playing video games, or, commonly, when riding in a car. In a future where people may find themselves running around streets in self-driving vehicles, the problems could get worse.
We typically sense our physical position and movement in the world by relying on our eyes, the feeling we get in our body, and our inner ear. Motion sickness may develop when there's disagreement between what your eyes see and what your inner ear senses. If you're looking at your phone in a moving vehicle, your eyes see a stationary screen but your inner ear feels that you're moving. The result of that dissonance can cause sickness. The common-sense solution is to just stop looking at your phone, but some of the appeal of self-driving cars is that you could use the time to be productive or entertained by what's on a screen.
Researchers of a car-making company and a video game company have been studying ways to address these issues. And their solution uses an interesting medium: sound. The research had two goals: to explore if sound could help relieve motion sickness, and to help people trust self-driving cars more. They experimented with two different categories of sound: tips that tell passengers what's about to happen, and noises that alert passengers when the device has noticed something, like a pedestrian.
The most convincing experiment took place on a closed airport runway in Sweden, near Gothenburg, in August of last year. On that track, brave participants had to ride in the backseat of a car driven by a human and read from a tablet while the car navigated the course. With just 20 people, the study was small, but according to researchers, the presence of sound tips made people report that they felt less ill. Participants said the sounds helped prepare them physically, or adjust their bodies for what was about to happen.
1. When does motion sickness usually happen?| A．Sleeping during travels. | B．Closing eyes on vehicles. |
| C．Driving vehicles speedily. | D．Riding in moving vehicles. |
| A．Confusion. | B．Potentiality. | C．Randomness. | D．Disagreement. |
| A．Uncertain. | B．Optimistic. | C．Concerned. | D．Dissatisfaction. |
| A．A study of motion sickness. | B．Self-driving vehicles. |
| C．A convincing experiment. | D．The cause and handling of motion sickness. |
6 . An international group of electronic music composers is taking beats from the dance club to jungles and forests and back, all to help save nature's greatest singers. A Guide to the Birdsong of Mexico, Central America and the Caribbean is a new album that includes the sounds of endangered birds. The album will come out next month, whose proceeds will go directly towards efforts to save birds.
The whole project was born out of this idea of trying to combine birdsong, electronic music and conservation. A Guide to the Birdsong of Mexico, Central America and the Caribbean was organized by activist, music producer, Robin Perkins. He invited artists from each of the endangered birds 'homelands to build their own songs around the birds’ songs. There are contributions from ten artists in eight different countries.
First single Black Catbird was created by The Garifuna Collective, from Belize. Al Obando, guitarist and producer of the group, always took in national parks and viewed birds when on the road with the band. “There are no trails, and there are no signs there to tell you about what you reseeing,” Obando says. “So we're trying to do something for the birds and nature tourism.”
Another musician who responded to Robin's call is Tamara Montenegro, an artist from Nicaragua. She was shocked to hear of the serious situation of the Guardabarranco after being approached: “This beautiful creature I grew up adoring also faced the influence of the systematic human activities”. In response, she created a song inspired by this bird and the challenges it faces to live naturally.
The new album is the second edition, following on from A Guide to the Birdsong of South America, produced by Robin in 2015. That first album has raised, to date, over $15,000 benefitting conservation projects in South America. As with the first album, all of the money from the sales of the new album will support specific organizations, including Birds Caribbean.
1. What does the underlined word “proceeds” in Paragraph 1 refer to?| A．Profits. | B．Budgets. | C．Challenges. | D．Effects. |
| A．He created a hit single himself. |
| B．He was fond of observing birds. |
| C．He was the organizer of the new album. |
| D．He did a lot for birds in South America. |
| A．It was friendly to humans. |
| B．It was beautiful in appearance. |
| C．It was losing its living environment. |
| D．It was facing challenges from other birds. |
| A．To collect money for a project. |
| B．To popularize electronic music. |
| C．To recommend some famous artists. |
| D．To introduce a new album of electronic music. |
7 . Americans are now allowed to get a COVID-19 vaccine （疫苗）. But the process in America is not going as smoothly as some had hoped. Many people are still facing a wait for their first shot. Moreover, the vaccines aren't available to kids under 16 yet. That's because scientists have only tested if the vaccine works in adults.
The good news is that there are two companies, Moderna and Pfizer, making COVID-19 vaccines. They are now running clinical trials（临床实验）to test their vaccines in teens and kids. Volunteers are given a treatment plan and then evaluated after.
Clinical trials are designed with safety in mind and usually done in adults first. They work like this: volunteers get placed into one of two groups. One group receives the vaccine. The other group gets a placebo. This is a shot given in the same way as the vaccine but with no effect. Scientists can compare the effects of the real vaccine against the placebo to see if the vaccine works. Researchers want to know everything that a person experiences when they get the shot, so they can detect any harmful effects. If anything did happen, the trial would stop immediately.
Some teens are eager to volunteer because they want to help people. Maybe you're the right age to be part of a clinical trial for the COVID-19 vaccine. Why not volunteer For A Vaccine Trial? Interested kids should read about the trials because every trial has risks. They should talk to their doctor and weigh the benefits and risks. Every vaccine has rare side effects in a few patients.
If you want to participate in a trial, you can try to sign up online by just clicking here, clinicaltrials gov. which lists every clinical trial in the US, including COVID-19 vaccine trials.
1. Why kids under 16 can't get a COVID-19 vaccine?| A．Because the vaccine is too hard to get. |
| B．Because the vaccine is too expensive for them. |
| C．Because they are not at the risk of getting COVID-19. |
| D．Because the effectiveness of the vaccine for kids hasn't been tested . |
| A．A substance to comfort patients | B．A pill to treat patients |
| C．A prize to award patients | D．A way to cure patients |
| A．To tell American adults they can get a COVID-19 vaccine. |
| B．To inform that American children can't get a COVID-19 vaccine. |
| C．To give information about clinical trials of vaccines in teens and kids. |
| D．To provide information for potential volunteers on trials. |
| A．Newspapers. | B．Magazines. | C．Internet. | D．Textbooks. |
8 . They say, “Online retailers (零售商) try to show you things that you wouldn’t have discovered otherwise. But we don’t think it compares to the experience of walking into a store and seeing things you wouldn’t have seen otherwise.”
That’s hardly an old-fashioned view. One of the misunderstandings in retail is that because younger customers are comfortable with digital technologies, they’re less interested in shopping in person. In fact, researchers have found that both millennials (千禧一代) and the generation born after 1995 prefer brick-and-mortar shopping to buying online.
Now in the pandemic age, retailers are working on making ordering online and picking up at the store a seamless (无缝衔接的) process. And that could be just the start. Other mixed models will appear, especially as retailers get rid of delays from the system, says Kirthi Kalyanam, executive director of the Retail Management Institute at Santa Clara University in California. Amazon, which already provides free two-day delivery to prime members, now offers one-day delivery nationwide for a fee and same-day delivery on select items in several cities. Its Amazon Fresh grocery service lets shoppers choose delivery within two to three hours.
Stores will increasingly become places to show products rather than to store inventory (存货), says Mr. Kalyanam. Online retailers will re-create their online image in a real space: Think Apple stores or Lululemon. And consumers will have multiple ways to buy their goods. Stores might not even carry inventory, but promise to deliver your purchase from a nearby warehouse in a half-hour.
1. What is the speakers’ attitude to buying online in Paragraph 1？| A．Negative. | B．Positive. |
| C．Indifferent. | D．Unknown. |
| A．Imaginative. | B．Physical. |
| C．Virtual. | D．False. |
| A．Amazon never connects the sales to the delivery. |
| B．Delivery service of goods online is being improved. |
| C．All retailers are considering picking up at the store. |
| D．Retailers can’t remove the delays from the delivery system. |
| A．Amazon offers one-day delivery nationwide for free. |
| B．Younger customers are less interested in shopping in person. |
| C．Instead of storing inventory, stores will become places to show products. |
| D．Online retailers don't show the things that customers haven't discovered. |
9 . It would be easy to believe that Mother’s Day was created by a greeting card company. After all, the day is celebrated with special sales and brunches, lots of presents and massive advertising campaigns. But the day was actually conceived more than a century ago by Anna Jarvis of West Virginia as a way of honoring the sacrifices mothers made for their children.
Jarvis’s mother, Ann Reeves Jarvis, helped start “Mothers’ Day Work Clubs,” teaching women how to care for their children. During the Civil War, she organized “Mothers’ Friendship Day,” where mothers of Union and Confederate soldiers met to try to promote harmony. The younger Jarvis Was inspired by all the things her mother had accomplished with her social work.
When Jarvis was young, she overheard her mother praying, “I hope and pray that someone, sometime, will find a memorial mother’s day honoring her for the matchless service she offers to humanity in every field of life.” When her mom died in 1905, Jarvis looked through all the sympathy cards she received. She underlined all the kind words that praised her mother, reading them over and over. The outpouring of kindness for her mother inspired her to create a day to honor all mothers.
The white carnation was her mother’s favorite flower, so it became the symbol for the day. She said it symbolized the truth, purity and charity of a mother’s love. Her idea of celebrating Mother’s Day was wearing a carnation while visiting your mother or maybe going to church together. Children were also encouraged to write letters to their mothers, sharing the depths of their appreciation.
The first official Mother’s Day events were held on May 10. 1908, at the church where her mother taught Sunday School in Grafton, West Virginia, and at the Wanamaker’s department store auditorium（礼堂）in Philadelphia. Jarvis didn’t attend the event in Grafton, but she sent 500 white carnations.
1. What is the probable meaning of the underlined word “conceived” in paragraph 1?| A．Thought up | B．Figured out. |
| C．Found out. | D．Believed in. |
| A．She created Mother’s Day. | B．She was active in social work. |
| C．She joined in the American Civil War. | D．She taught Jarvis how to care for children. |
| A．Pray for their mother’s happiness. | B．Send some flowers to their mothers. |
| C．Write a letter to thank their mothers. | D．Accompany their mothers to the celebration. |
| A．A Memorable Mother | B．Carnation and Mother’s Day |
| C．The Greatness of a Mother | D．The Founding of Mother’s Day |
10 . One of my earliest memories was walking up to the smell of camp smoke and my mother’s hot chocolate. My parents were poor, and we lived in the countryside in Portland. Dad had two jobs and Mom was disabled, but that didn’t stop them from heading into the Cascade Mountains several times a year.
Our clothes were old and worn and our food was usually cheap and simple. However, we were always satisfied with our hot chocolate, which was made in a traditional way handed down from my grandmother to my mother.
There was no store to buy anything we needed. We just had powdered cocoa in our camp.
Mom would set the smoke-blackened coffee pot at the side of the fire and slowly warm the milk, adding chocolate and sugar, and stirring (搅拌) until the contents became thick and rich brown. The wonderful smell of chocolate filled the camp. More than once, I could remember people that we had just met hours before stepping into our camp to enjoy mother’s creation.
Once we were trapped in our tent (帐篷) for days because of a terrible rainstorm. Every morning I was woken up by the attractive smell of Mom’s hot chocolate.
Now, many years have passed, when we head for the mountains, I still use that worn coffee pot. And we always bring extra cups for the neighbours who will certainly turn up.
I have told my family a lot about Mom, and it seems that nothing brings back those warm memories better than sitting around the fire at night and tasting sweet hot chocolate.
1. Where did the author live when she was a child?| A．In a village. | B．In a big city. | C．In a hotel. | D．In a palace. |
| A．Kind. | B．Friendly. | C．Disabled. | D．Serious. |
| A．Her parents were poor. | B．Her mom had two jobs. |
| C．Her mom was a boss of Coffee House. | D．Her dad stopped them from camping. |
| A．Saved. | B．Absorbed. | C．Caught. | D．Suffered. |
| A．Camp Smoke | B．Mom’s Hot Chocolate |
| C．My Neighbours | D．Grandmother’s Creation |
