1 . Hey! You have a hairless spot on the back of your head! " Mom’s alarmed cry hit me like a shock.
I tried to shrug it off. “It’ll grow back.” I worked to sound
At first, the loss was minimal.
As days went by, my hair started to fall faster and more.
We went to see a doctor, who diagnosed my condition as alopecia (脱发症) . He recommended an injection to try, which would be
I had to wear a wig to school every day, worried it might slip one day and that everything would
I came to realize that what had happened was not my fault, and not something I should feel
A.mid | B.calm | C.upset | D.relieved |
A.Checking | B.Polishing | C.Clearing | D.Covering |
A.sense | B.chance | C.sign | D.way |
A.wonder | B.panic | C.expand | D.relieve |
A.Reaching | B.Shifting | C.Feeling | D.Running |
A.delay | B.avoid | C.cease | D.keep |
A.attached | B.connected | C.guided | D.applied |
A.After all | B.Worse still | C.In brief | D.By contrast |
A.motion | B.procedure | C.routine | D.mission |
A.break out | B.draw to a close | C.fade away | D.come to light |
A.reveal | B.restrict | C.distribute | D.highlight |
A.Instead | B.Furthermore | C.Anyway | D.Thus |
A.blow | B.credit | C.exception | D.miracle |
A.proud | B.ashamed | C.fond | D.guilty |
A.evaluation | B.introduction | C.acceptance | D.dependence |
2 . When you have to cancel your Thanksgiving plans due to the spread of the COVID-19, you may find yourself craving companionship as much as that pumpkin pie. That’s because parts of the brain respond to loneliness much like they react to hunger, according to a study in Nature Neuroscience.
Researchers from the Massachusetts Institute of Technology scanned the brains of 40 healthy, social young adults after 10 hours of either fasting (禁食) or social isolation (隔离). They found that after being alone, participants’ neurological responses to social signals were similar to hungry people reacting to food — that is, certain areas of the brain linked to desire were turned on to start working.
For an isolated person, a picture of people laughing together caused the same areas of the brain to light up as when a hungry person looked at a big plate of pasta.
“Just like hunger is an unpleasant sensation that motivates us to seek out food and thirst motivates us to seek out water, loneliness is a biological need that motivates us to reconnect to others,” Holt-Lunstad told Insider.
Researchers were surprised to find that people who were prevented from socializing became much more focused on that need, and less reactive to hunger. As their loneliness increased, they became less responsive to images of food.
These latest findings suggest that the relationship between food and loneliness might be more complicated than we thought, despite the popular opinion of stress-eating to cope with social isolation. More research is needed to understand the complex ways people deal with loneliness.
Studies like this can help scientists understand how the brain processes loneliness, and possibly reduce the negative consequences. However, although loneliness may be similar to hunger, fixing it isn’t as easy as serving someone a hearty dinner because people are unique and they need varying levels of social interactions to meet their needs.
1. The underlined word “craving” in the first paragraph can be replaced by .A.avoiding | B.desiring | C.preferring | D.ignoring |
A.to find their brain responses to both loneliness and hunger |
B.to provide explanations for their feeling lonely and hungry |
C.to find how loneliness can have a negative impact on health |
D.after they have been hungry and socially isolated for 10 hours |
A.Hunger is an unpleasant sensation. |
B.Hunger and thirst motivate us to feed ourselves. |
C.Socializing is supposed to be basic human need as it is. |
D.The effects of loneliness on health are comparable to other factors. |
A.Loneliness may be fixed just as hunger is satisfied. |
B.Situations of loneliness are complicated and hard to cope with. |
C.Scientists have understood how the brain processes loneliness. |
D.Loneliness is such a common and serious problem that we all have to suffer. |
3 . Blind people have long desired for brightness, but scientists don’t have the technology. To bring that one step closer to reality, Zhiyong Fan, a materials scientist of the Hong Kong University of Science and Technology, developed a new artificial eye recently. The device, which is about as sensitive to light and has sharper vision and a faster reaction time than a real eyeball, may outperform human eyes.
The human eye owes its wide field of view and clear eyesight to the retina (视网膜) — an area at the back of the eyeball covered in light-detecting cells. The design for a new artificial eye is based on the structure of the human eye and uses a friendly light-sensitive material. At the back of the eyeball, an artificial retina is lined with Nan scale light sensors (纳米级光感器). Those sensors measure light that passes through the lens (晶状体) at the front of the eye. Wires attached to the back of the retina send signals from those sensors to the processor, similar to the way nerve networks connect the eyeball to the brain.
“In the future, we can use this to replace damaged human eyes,” says the lead designer. In theory, this artificial eye could see more clearly than the human eye, because the artificial retina contains about 460 million light sensors per square centimeter while a real retina has about 10 million light-detecting cells per square centimeter. Besides, the artificial eyeball records changes in lighting faster than human eyes can — within about 30 to 40 milliseconds, rather than 40 to 150 milliseconds. Although its 100-degree field of view isn’t as broad as the150 degrees a human eye can take in, the device can see as well as the human eye in poor light.
Hongrui Jiang, an electrical engineer at the University of Wisconsin, though, thinks engineers need a much more practical and efficient way to produce vast series of tiny wires on the back of the artificial eyeball to give it superhuman sight, which is super hard to achieve.
1. Why does Zhiyong Fan develop the artificial eye?A.To replace people’s real eyeballs. | B.To gain a sharper vision. |
C.To help the blind regain their eyesight. | D.To help normal eyes perform better. |
A.The design of the artificial eye. | B.The structure of the human eye. |
C.The advantages of the artificial eye. | D.The material used for the artificial eye. |
A.They have the same structure. |
B.The artificial eye may see more clearly. |
C.The human eye sees better in weak light. |
D.The artificial eye takes in a broader view. |
A.Doubtful. | B.Favorable. | C.Unconcerned. | D.Satisfied. |
4 . Four best scenic paths near London
Goring Gap and the Thames PathLength: 5 miles
Start: Goring & Streatley station
End: Pangbourne
This path is far from boring for a rural walk. The footpath follows the curve of the river as it flows south, winding past wildflower grassland, and the Hartslock Nature Reserve, which is home to red kites and rare orchids.
Post-walk pub: The Swan serves these days. Order a table or keep warm by one of its open fires.
Box HillLength: 6.8 miles
Start and end: Westhumble station
Admire the glorious views and escape the crowds. But first you’ve got to climb 272 steps to the top of Box Hill. The endorphins are definitely pumping—maybe that’s how it got the nickname “Happy Valley”.
Post-walk pub: The spacious Tree on Box Hill has an enticing menu and huge beer garden.
The Kentish CoastLength: 9.8 miles
Start: Ramsgate
End: Margate
Following the path, you’ll pass plenty of former smugglers’ (走私者) caves and there are beachside cafes dotted along the route at regular intervals.
Post-walk pub: Order a pint of beer at Xylo, a pub with wonderful views over Margate Sands.
Chess Valley in the ChilternsLength: 9.9 miles
Start: Chorleywood station
End: Chesham station
It isn’t home to any chess masters, but it did used to produce n lot of watercress, fed by its sparkling chalk stream. This walk follows the river, whose bank is covered with the rolling grass and woods.
Post-walk pub: The George & Dragon is an old coaching inn with a log fire and real beer.
1. Which path is a circular route?A.Goring Gap and the Thames Path. | B.Box Hill. |
C.The Kentish Coast. | D.Chess Valley in the Chilterns. |
A.They serve beer all the time. | B.They include different animals. |
C.They provide river scenery. | D.They are of the same length. |
A.Drink coffee at the seaside. | B.Relax yourself in The Swan. |
C.Learn from famous chess masters. | D.Meet smugglers along the way. |
5 . Sumiel, a 71-year-old, was no stranger to the struggles of kidney (肾) disease. He was on the transplant list (移植名单), but no matches had yet
One day, he took a taxi home after his
Letts was
Fourteen months after they ended up in the same taxi by
A.happened | B.appeared | C.proved | D.showed |
A.argument | B.agreement | C.promise | D.appointment |
A.drive | B.walk | C.chance | D.march |
A.bargaining | B.complaining | C.chatting | D.reasoning |
A.struggling | B.volunteering | C.competing | D.wandering |
A.usually | B.basically | C.extremely | D.normally |
A.searching for | B.picking out | C.preparing for | D.getting through |
A.partner | B.game | C.pair | D.match |
A.predict | B.think | C.learn | D.work |
A.fair | B.strange | C.true | D.certain |
A.contacted | B.connected | C.abandoned | D.launched |
A.decision | B.operation | C.practice | D.process |
A.solutions | B.results | C.purposes | D.evidences |
A.arrangement | B.design | C.chance | D.invitation |
A.success | B.task | C.responsibility | D.glory |
6 . Imagine a school where students are taught by the best teachers in every subject, regardless of location. Imagine a school where students could go on safe field trips to the Amazon rainforest or Everest base camp. Well, such schools are already being built: in virtual(虚拟的)reality.
Last year, Optima Academy Online, an all-virtual school, delivered courses that aim to improve the hearts and train the minds of young people. These courses are of different levels, attracting 170 full-time students from all over Florida. In the progress of home-schooling, students use headsets for about three hours a day for formal lessons and then do course work independently with digital check-ins.
Future versions(版本)of VR will doubtless be widely used in education, but the only questions are: for what purpose and at what speed? There are enough reasons to doubt whether VR schools represent the future of education. Sticking a child in their bedroom with a heavy VR headset fastened to their face and no physical social interaction with other kids will fill many of them and their parents with horror.
A recent report concluded that digital education could significantly improve the quality and equality of schooling systems. But if managed poorly, it could have the opposite effect, turning a digital divide into an educational one. There is growing evidence to suggest that is happening. In Mexico, only 24 percent of 15-year-old students in poor schools have access(使用)to a home computer for schoolwork compared with 87 percent in rich ones.
Used properly, technology can be great for enabling self-motivated students to access learning resources and connect with fellow students and teachers all over the world, says Beeban Kidron, a member of the UK’s Digital Futures Commission. The trouble is that Edtech is too often seen as a shiny new toy that will solve all problems and save money rather than being viewed as a different way to learn, she adds.
1. What can we learn about Optima Academy Online?A.It has been widely accepted. |
B.It holds faraway outdoor field trips. |
C.It provides various online courses. |
D.It requires parents to help with check-ins. |
A.The development. | B.The concerns. |
C.The advantages. | D.The popularity. |
A.Mexican schooling quality has been improved |
B.local schooling systems are not fully developed |
C.technology access gaps may cause education inequality |
D.family backgrounds shape people’s views on education |
A.It enriches learning. | B.It’s irreplaceable. |
C.It needs improving. | D.It’s undervalued. |
7 . A therapy (治疗) client and I are working on an eating disorder and find it originated from a relationship break-up or perhaps being bullied in middle school. Such hurtful experiences led to not eating for a couple of weeks. Then comes a high praise from a friend that totally backfires. Maybe it’s an enthusiastic, “Wow, you look great!’’ In a flash, this praise excites an inner and often unconscious thought: “Oh, people care more about me if I lose weight. So many things feel out of control but I can control people’s affection by not eating.”
Often, very well-intentioned individuals offer praise out of a desire to uplift and connect. Such praise is often tied, directly or indirectly, to a person’s relationship with the standards of a specific group or institution. Sadly, such praise can easily reduce an individual’s dignity to their level in line with the group’s expectations rather than supporting their inherent (固有的) dignity and worth. So, what’s a better way?
One answer is to exit the game of “right and wrong” and enter a more life-giving focus on what needs are present. Returning to our example above, when you see that someone has lost weight and you want to give them a praise, just pause and take a deep breath. Simply ask, “How are you doing?” See them and hear them. Appreciate them as a person of limitless value. Know there may be much more to their inner world than meets the eye. Similarly, when you see someone’s success in school, appreciate the hard work they put into it. Ask with gentle curiosity, “How’s it been for you?” Listen with your full attention that in itself can be a rare gift in today’s hustle and bustle world.
By maintaining your concern and listening to the ways they want to be accompanied and supported — even when it might not be your first instinct — you can see them as a whole person, with complex feelings, very human needs, and inherent dignity.
1. What does the underlined word “backfires” in paragraph 1 refer to?A.Improves the situation. | B.Shows sincere concern. |
C.Removes hurtful feelings. | D.Produces an unexpected result. |
A.Analyzing the phenomenon. | B.Listing another example. |
C.Presenting the solution. | D.Making a proposal. |
A.To start a light conversation. |
B.To focus on one’s inner needs. |
C.To explore the secret of keeping slim. |
D.To show appreciation for one’s efforts. |
A.Say No to the “Right or Wrong” Game |
B.Why We Need to Make Praises to Others. |
C.Follow Me and Be a Qualified Therapist |
D.How Innocent Words can Be Harmful |
8 . Whether due to genuine concern for the environment or the widespread criticism of plastic among consumers, many companies have invested heavily in reducing their use of plastic packaging, which may indeed have a positive environmental impact. But another trend that’s grown out of the anti-plastic movement is a lot less positive: overpackaging. More and more brands have begun adding unnecessary paper packaging on top of plastic packaging in order to make their products look more environmentally friendly, without actually reducing plastic waste.
Unfortunately, there’s a very good reason companies are adopting this clearly problematic approach. Through a series of eight studies with more than 4,000 participants, we found that consumers will accept a product’s packaging as more environmentally friendly if it’s plastic with an additional layer of paper than if the product is visibly packaged in identical plastic packaging but without the paper. These perceptions (认知) in turn make consumers both more likely to buy a product, and willing to pay more for it.
Part of what makes this overpackaging trend particularly harmful is that it is much valued by consumers who reported engaging in more eco-friendly behaviors. They were more likely to view overpackaged products as environmentally friendly. As a result, the very consumers who are most interested in pushing companies to make sustainable choices are likely unintentionally encouraging the environmentally harmful practice of overpackaging.
The good news is, overpackaging isn’t the only way to signal sustainability and attract such consumers. In our studies, we found that instead of additional paper packaging, simply adding a minimal packaging sticker to plastic packaging could clarify the misperception that overpackaged products are more sustainable, Especially for products for which plastic is necessary to ensure safe transportation and lengthen shelf life, this kind of clear messaging can help reduce consumers, discrimination against the responsible use of plastic packaging.
Of course, minimal packaging stickers certainly should only be used if a brand has actually ensured that it is using the minimal possible packaging, ideally under the supervision of a trade organization or regulatory body that maintains clear, consistent standards.
1. What can we learn about overpackaging according to paragraph 1?A.It calls for less investment. |
B.It involves the proper use of paper. |
C.It has a positive environmental impact. |
D.It causes over-consumption of materials. |
A.They care about the environment. |
B.They are always following the trend. |
C.They like comparing products’ qualities. |
D.They prefer beautifully-decorated products. |
A.To help products stay fresh longer. |
B.To improve the brand’s popularity. |
C.To correct consumers’ misunderstanding. |
D.To present more information about products. |
A.Minimal packaging stickers have been widely used. |
B.Advantages of minimal packaging stickers are overestimated. |
C.The use of minimal packaging stickers should be strictly regulated. |
D.The use of minimal packaging stickers is a solution to over-packaging. |
9 . As one of the Olympic athletes, I miss countless birthday parties and ruin numerous family holidays, but there is a very good reason for giving up so much. I think of almost missing my brother’s wedding because I was too busy hiring a car and driving through the “no-go” areas in order to do a group ride with the local triathletes.
It boils down to this: I was born with an enormous amount of drive and determination. From a small girl, I would stay in at lunch time just to get ahead on class work rather than go out and play; I would get the bus on my own at ten years old and go to swim 100 lengths of the pool while other kids played pool games; I was the only girl in a rugby club of 250 boys. I have always lived my life to extremes. Call it unhealthy if you want, but that is the way I roll, no matter what it is I’m applying myself to.
Being a professional athlete is no different. If you want to be an Olympic champion, it’s all about that little extra thing you have done in your preparation that will set you apart from your competitors.
Can this be overdone? Absolutely. But if your dream is to be the best and reach the winner’s platform, you had better be totally committed to your sport. In the words of the British triathlete Alistair Brownlee, “Even if it means getting injured, I’d prefer to have three or four outstanding years of winning stuff than having ten years of being average.”
Doing what we do as athletes sets us apart because we are willing to do that extra little bit that might take us to the top. It is certainly not a balanced way to live and it is certainly not normal but those words are generally not used for anyone who is striving for greatness.
1. What made the author almost miss her brother’s wedding?A.She failed to hire a car to get there. |
B.She was stopped at the “no-go” areas. |
C.She was busy with a sports training. |
D.She forgot about the exact date of it. |
A.To list her accomplishments. |
B.To recall her miserable memories. |
C.To explore reasons for her commitment to sports. |
D.To remind kids of the significance of determination. |
A.Injury is unavoidable. |
B.Being average is acceptable. |
C.Winning awards takes a long time. |
D.Getting to the top requires efforts. |
A.A celebrity blog. | B.An academic book. |
C.A travel brochure. | D.A health magazine. |
10 . The Best Computer Science Competitions for High Schoolers
Imagine Cup
Microsoft runs the competition, and each year, students around the world compete in it. Students work in teams of up to three members to design a tech solution to a social or health problem.
Qualification: Student must be 16 or older.
Prizes: Each winning team is awarded $100,000.
First Robotics Competition
Students work in teams of at least 10 along with 2 adult mentors to design and build an industrial-sized robot. They then must program the robot to compete in a sophisticated field game at competitions. Annual team registration fees are usually about $5,000.
Qualification: High school students in the U.S.,
Prizes: Various scholarships and cash prizes for top scorers.
Technovation Challenge
It is designed to get more girls worldwide interested in coding and computer science. Girls work in teams of 1-5 and with volunteer mentors to use technology to design an app that helps solve real world problems such as climate change and hunger.
Qualification: Must identify as female and be between 10 and 18 years old.
Prizes: Prizes and scholarships up to $2,000.
American Computer Science League
To compete, your school has to have registered and paid the registration fee. Before the competition, the coach teaches coding with a focus on ACSL exam categories. Then, students work in teams of 3 or 5 students to complete four tests. Students can code in Python 3, Java 8, or C++ as defined on the programming platform. Top-scoring teams advance to regional, statewide, and eventually global competitions.
Qualification: Students whose schools have registered for the competition.
Prizes: Winners of the ACSL All-Star Contest receive prizes.
1. Which competition has the largest number of students in a team?A.Imagine Cup. | B.First Robotics Competition. |
C.Technovation Challenge. | D.American Computer Science League. |
A.It is run by Microsoft. | B.It is only for U.S. students. |
C.It has a gender limitation. | D.It allows mentors to assist. |
A.Register for the competition independently. |
B.Have chances to take higher-level competitions. |
C.Design an app using programming knowledge. |
D.Receive various scholarship and cash prizes. |