1 . Scientists in the Netherlands have trained bees to identify COVID-19 through their sense of smell, according to a press release from Wageningen University. The research was conducted on more than 150 bees in Wageningen University’s bio-veterinary research laboratory.
The scientists trained the bees by giving them a treat — a sugar-water solution (溶液) — every time they were exposed to the scent of a mink (貂) infected with COVID-19. Each time the bees were exposed to a non-infected sample, they wouldn’t get a reward. Eventually, the bees could identify an infected sample within a few seconds — and would then stick out their tongues like clockwork to collect the sugar water.
Bees aren’t the first animals to detect COVID-19 by scent. Researchers have also trained dogs to distinguish between positive and negative COVID-19 samples from human saliva (唾液) or sweat with fairly high levels of accuracy. A small German study found that dogs could identify positive COVID-19 samples 94% of the time. That’s because metabolic changes from the coronavirus make an infected person’s bodily fluids smell slightly different from those of a non-infected person. But researchers still aren’t sure whether animals are the best bet (赌注) for sniffing out COVID-19 cases outside the lab.
“No one is saying they can replace a PCR machine, but they could be very promising,” Holger Volk, a neurologist, told Nature. PCR machines are what lab technicians use to process standard COVID-19 swab tests. At the very least, certain animals could be useful for identifying COVID-19 in places or countries in which high-tech laboratory equipment is scarce or inaccessible.
Wageningen scientists are working on a prototype of a machine that could automatically train multiple bees at once. Then bees can use their skills to test for coronavirus aerosols (气溶胶) in the surrounding environment.
1. How did the researchers teach the bees to identify COVID-19?A.By offering bees some rewards. |
B.By infecting bees with COVID-19. |
C.By raising bees with sugar water. |
D.By exposing bees to infected humans. |
A.For dogs can sniff out hidden virus of the samples. |
B.For dogs can tell the different smell of the samples. |
C.For dogs can feel metabolre changes of the samples. |
D.For dogs can distinguish saliva from sweat of the samples. |
A.To breed more multiple bees. | B.To detect coronavirus aerosols. |
C.To help underdeveloped countries. | D.To develop a new type of machine. |
A.A New Way to Cure COVID-19 Disease |
B.Bees: Well-trained COVID-19 Detectors (探测器) |
C.Bees’ Extremely Accurate Sense of Smell |
D.The Best Method of Identifying COVID-19 |
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删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1.每处错误及其修改均仅限一词;
2.只允许修改10处,多者(从第11处起)不计分。
The famous environmentalist, Professor Jin, was invited deliver a speech in our school last Friday. He started with an universally accepted theory explaining how the Earth began. We were shocking that there were so many kinds of living thing on the planet long time ago. However, he also showed how the appearance of some species happened later. It was human activities that large changed the global environment. He pointed out we should attach importance to protect the environment. It decided that we were able to continue to live on this planet in the future or not. I was deeply impressed by her speech. I think of it is important to protect our only home.
1. 时间和地点;
2. 运动项目;
3. 报名事项。
注意:1. 词数100左右;
2. 可适当增加细节,以使行文连贯。
Notice
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The Student Union
增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1. 每处错误及其修改均仅限一词;
2. 只允许修改10处,多者(从第11处起)不计分。
While walk out of the supermarket yesterday, I saw a lady pulling a cart with three big bag of groceries. I watched her go towards her car from the supermarket. I waited to see that a clerk would come out to help her, but no one came. So I said to her, “Madam, did you need help?” She was surprised and excitedly replied, “Oh yes! It couldn’t be best! Thank you! ”
My car happened to parked right beside his. As I helped her put her groceries into her car, she thanked to me again and wished me a good day. I felt happily knowing that I could lend the hand to someone in need.
When it comes to Chinese paper-cutting, many think of the Chinese character fu,
Ye
In the traditional approach
Ye always carries paper to write down his inspirations. The idea for his work
6 . I looked at the result of the pregnancy test and found I was pregnant. My heart almost stopped. I was married, but my
Weeks later, I had a
Several people entered the room, heard me crying, and left without
Later that day, I saw a(n)
A.son | B.brother | C.father | D.husband |
A.rare | B.temporary | C.necessary | D.typical |
A.test | B.family | C.child | D.promotion |
A.terrible | B.dangerous | C.boring | D.busy |
A.prepared | B.finished | C.ordered | D.left |
A.wandered | B.looked | C.dashed | D.jumped |
A.unusual | B.impossible | C.unimportant | D.improper |
A.doubting | B.noticing | C.repeating | D.saying |
A.merely | B.frequently | C.specially | D.curiously |
A.card | B.certificate | C.tissue | D.scarf |
A.appealed | B.happened | C.applied | D.belonged |
A.As | B.And | C.So | D.But |
A.work out | B.turn up | C.carry on | D.calm down |
A.duty | B.trial | C.light | D.dream |
A.brochure | B.envelope | C.container | D.invitation |
A.admitted | B.declared | C.predicted | D.supposed |
A.found | B.refused | C.remembered | D.chose |
A.explained | B.discovered | C.believed | D.promised |
A.possessions | B.inventions | C.awards | D.achievements |
A.taught | B.reminded | C.guaranteed | D.warned |
7 . Gaining more independence and increasingly doing more things without parents is an important and natural part of growing up. There are lots of steps to promote self-reliance.
•Doing household chores
Kids should be able to handle age-appropriate household chores.
•
As kids get older, they naturally spend more time away from home doing things on their own. They’ll go to friends’ houses to play by themselves and work through any conflicts themselves. If your child is ready, arrange for play dates at your house and let them choose what activities they might want to suggest to their friends.
•Volunteering
For very young children, everything is naturally about their own needs and wants. When kids help others, they learn to think outside themselves.
•Organizing their own schedule
Give your child a calendar and get them into the habit of writing down important dates and appointments. As they get older, they’ll need to keep track of things like doctors’ appointments, play dates, friends’ birthday parties, games and more.
•Learning to be independent thinkers
Talk about news events over dinner or while in the car.
A.Entertaining themselves |
B.Having social outings alone |
C.Even young children can help with them |
D.This is an important step toward maturity |
E.Encourage your child to tell you what they think about them |
F.They’re also good opportunities for families to spend time together |
G.Independent kids rely on themselves to know what they need to do |
8 . Many longtime gardeners will tell you that the garden is their happy place. In a new study, University of Florida scientists found that gardening activities lowered stress, anxiety and depression in healthy women who attended twice-a-week gardening classes. None of the study participants had gardened before.
“Previous studies have shown that gardening can help improve the mental health of people who have existing medical conditions or challenges. Our study shows that healthy people can also experience a rise in mental well-being through gardening,” said professor Charles Guy.
Thirty-two women between the ages of 26 and 49 completed the study. All were in good health. Half of the participants were assigned(指派)to gardening sessions, while the other half were assigned to art-making sessions. Both groups met twice a week for a total of eight times.
In the gardening sessions, participants learned how to compare and sow seeds, transplant different kinds of plants, and harvest and taste eatable plants. Those in the art-making sessions learned techniques such as papermaking, printmaking and drawing.
Participants completed a series of assessments measuring anxiety, depression, stress and mood.
The researchers found that the gardening and art-making groups experienced similar improvements in mental health over time, with gardeners reporting slightly less anxiety than art makers.
But why does being around plants make us feel good? The answer might be found in the important role of plants in human evolution and the rise of civilization. As a species, we may be innately attracted to plants because we depend on them for food, shelter and other means of our survival. “We believe this research shows promise for mental well-being, plants in health care and in public health. It would be great to see other researchers use our work as a basis for those kinds of studies,”Guy said. “At the end of the experiment, the majority of the participants were saying not just how much they enjoyed the sessions but also how they planned to keep gardening. ”
1. What do Charles Guy’s words in paragraph 2 suggest?A.Their study findings differ from those of past ones. |
B.Their study is based on the findings of past ones. |
C.Gardening also does good to people’s physical health. |
D.Gardening is suitable for all kinds of patients. |
A.They each did the same things every day. |
B.They were all middle-aged men and women. |
C.They attended an experiment that lasted about four weeks. |
D.They were separated during the whole course of the experiment. |
A.It influenced them positively. | B.Its process was a bit loo complex. |
C.It was well worth doing much further. | D.Its findings were beyond their expectations. |
A.Gardening Is a Perfect Choice to Stay Fit |
B.Gardening Can Develop Better Mental Health |
C.The Garden Can Be a Happy Place for Gardeners |
D.Gardening Turns Out to Be an Effective Treatment |
9 . Fifty-five public schools in New York City have recently invited furry friends to their classrooms. The Comfort Dog Program has been around for five years.
Comfort dogs have been found to augment levels of oxytocin, serotonin and dopamine in our brains, hormones (激素) promoting positive feelings and a happy mood (心情). But how are these pets helpful in the classroom?
For some students the comfort pet provides the emotional support they need, which then allows the child to be engaged and successful in their studies. A struggling student can hold the pet in the arms and get the support he or she needs at the time, which also develops their self-awareness and ability to regulate their emotions. In other cases, teachers use the pet as part of the lesson. Meredith Loftus, a teacher in New York, brought a dog named Chip to help out with a phonies game in the classroom.
Dog training isn’t necessarily a walk in the park, although it can definitely include that. It takes time, effort and consistency to train pets, and this is the case for this program, too.
To be a part of the program, an educator and their dog must participate in a six-hour training session by The Good Dog Foundation. This training teaches the educator what to do if students are scared of pets. It also trains dogs on the differences they’ll experience in a school environment, such as the school bell, fire alarms, loud announcements and other possible distractions. The dog is also trained at being friendly with strangers and the handler, in this case the educator, who needs to be very in tune with the pet and know how to look out for its stress signals.
The program has been a genuine success so far, and a helpful addition to the education and well-being of many students in New York. In fact, hundreds of other schools have expressed their interest in joining the program and may be including it in their curriculum in the near future.
1. The underlined word “augment” in paragraph 2 most probably means “______”.A.reach | B.stabilize | C.balance | D.increase |
A.develop in an all-round way | B.succeed academically |
C.become more supportive | D.have richer feelings |
A.How to be friendly with dogs. | B.How to keep dogs away from stress. |
C.How to respond to students’ fear of pets. | D.How to adapt to a school environment. |
A.It’s still on trial in New York. | B.It’s gaining greater popularity. |
C.It’s promoted across New York. | D.It’s part of New York curriculum. |
10 . Merle Liivand was born in Estonia. As a child, she had health problems, and began swimming to help her lungs get stronger. She was soon taking part in open water swimming contests, sometimes even in icy water. In 2017 and 2019, she represented Estonia at the World Aquatics Championships.
Eleven years ago, Ms. Merle moved to Miami, Florida. In one training session, she nearly wound up swallowing some plastic floating in the sea. That experience made her think of all the sea animals who faced similar pollution every day. She began swimming with a special single swimming fin(鳍状物) attached to both of her feet. This rubbery “monofin” allows her to swim by kicking both of her legs together. “Swimming with the monofin without using my arms is similar to how dolphins and sea animals swim,” says Ms. Merle. She believes that swimming with a monofin “sends a bigger message”.
Ms. Merle first set the world record for swimming with a monofin in 2019, when she swam 10 kilometers off the coast of California. In 2020, she broke the record again by swimming 20. 6 kilometers, this time in Miami, Florida.
Last year, she set a new Guinness World Record by swimming 30 kilometers, again in Florida. Even though it took her 9 hours and 19 minutes to set that record, Ms. Merle says she knew she could go farther. So for the last year, Ms. Merle has been getting up at 4 every morning, putting on her monofin and going swimming.
On May 7, Ms. Merle broke the record once more, this time swimming the length of a full marathon. It took her 11 hours and 54 seconds to swim 42.2 kilometers.
To keep her energy up, a friend followed her in a kayak and gave her food and water from time to time. Along the way, Ms. Merle picked up all the trash she found and put it in the kayak. By the end of her marathon, the kayak held three bags full of trash.
1. Why did Merle Liivand start to swim?A.To become physically fitter. | B.To pick up rubbish out of water. |
C.To satisfy her interest in water. | D.To win swimming contests. |
A.To help develop her strength. | B.To improve her swimming speed. |
C.To experience the life of a sea animal. | D.To raise public awareness of plastic pollution. |
A.Far-reaching influences brought by Ms. Merle. |
B.Ms. Merle’s amazing achievements in swimming. |
C.Hardships Ms. Merle experienced while swimming. |
D.Ms. Merle’s contributions to environmental protection. |
A.Considerate and modest. | B.Ambitious and proud. |
C.Kind-hearted and hard-working. | D.Strong-willed and generous. |