1 . Despite an ever-higher bar to grab the attention of students in large lecture hall, Tatiana Erukhimova, who teaches physics at Texas A&M University, has managed to get her students, as well as future generations, excited about the science.
Known as “Dr. Tatiana”, the professor performs physics tricks with boundless energy and enthusiasm in her videos. A range of everyday objects are used in her experiments, from pingpong balls and toilet paper to marshmallows, bicycle wheels and hair dryers. Videos of her dramatic demonstrations have received hundreds of millions of views across social media platforms.
However, things aren’t always easy. When she first started teaching college freshman classes two decades ago, she also struggled to grab the attention of her students. “I did not grab their attention on the first day-that was my mistake.” she says. “I missed this opportunity to bond with them from the very beginning, and then it took me a while to find my voice.”
By the second semester, she found her footing, adjusting her approach to get her students engaged. The key, she says, has been to make herself approachable and her instruction personal. And, of course, add showy demonstrations. “These demonstrations often help students to connect these abstract concepts with real life.” she says.
Physics department head Grigory Rogachev says Erukhimova’s work has helped bring visibility to the department, with about 2. 5 million subscribers on its department’s YouTube page, which has translated to a boost in research funds and physics major applicants.
As a leader in a STEM field in which women are underrepresented, she’s become a role model for some. Afiya Dhanani attended Texas A&M University after seeing Erukhimova’s videos online. “Watching Dr. Tatiana do the experiments online, especially since she was a female leader. Was more inspiring for me to even go into physics.” Dhanani said in an interview with CBS Mornings. That’s all Erakhimova says she can hope for -making physics less forbidding and more exciting.
1. What does Erukhimova’s online videos feature?| A．Rare materials. | B．Energetic presentation. |
| C．Plain demonstration. | D．Professional explanation. |
| A．All that glitters is not gold. |
| B．Sharp tools make good work. |
| C．First impressions are make or break. |
| D．A fall into the pit, a gain in your wit. |
| A．It leads more students to change their majors. |
| B．It makes more people to know about the department. |
| C．It helps the department translate more research papers. |
| D．It attracts more physics professors to join the department. |
| A．Inspirational. | B．Underestimated. | C．Cooperative. | D．Ambitious. |
2 . “You can get a kitten,” I promised my daughter Cali after her father and I divorced (离婚). After
One orange-and-white kitten drew Cali’s
“
“Can we take them both?” Cali
“We have to follow the
“I know,” Cali
We brought Caramel home. Caramel seemed
However, we were told Butter was
Two years later I had a new boyfriend Brain. The first time I went to his home, I saw a flash of orange and white. Caramel? I thought,
“That’s my daughter’s cat Butter,” Brian said.
After comparing the adoption papers, I
“They might not
Today Caramel and his brother are inseparable. As are Brian and I, and our daughters after our marriage.
1.| A．cooling down | B．lying down | C．settling down | D．slowing down |
| A．expectation | B．attention | C．strength | D．response |
| A．Instantly | B．Merely | C．Roughly | D．Actually |
| A．sisters | B．partners | C．twins | D．neighbors |
| A．doubted | B．demanded | C．opposed | D．begged |
| A．rules | B．strategies | C．theories | D．concepts |
| A．relieved | B．sighed | C．wondered | D．resisted |
| A．hesitant | B．energetic | C．distant | D．lonely |
| A．shelter | B．hospital | C．apartment | D．nursery |
| A．familiar | B．ordinary | C．identical | D．common |
| A．sold | B．adopted | C．attacked | D．stolen |
| A．amused | B．shocked | C．ashamed | D．satisfied |
| A．interpreted | B．defended | C．exposed | D．confirmed |
| A．approve | B．contact | C．remember | D．distinguish |
| A．affection | B．concentration | C．ease | D．courage |
3 . Species (物种) can actually go extinct (灭绝的) more than once. In a biological sense, species become extinct when the last animal of a species stops breathing. But when the species disappears from our shared memory and cultural knowledge, it becomes extinct in a different way — society (与社会有关的) extinction.
The researchers looked at dozens of previous studies to look into how societal extinction happens, finding out contributing factors such as symbolic or cultural importance, how long ago a species was last alive, and how much of a connection it had to humans.
Societal extinction usually but not always happens after biological extinction. Sometimes, both extinctions can happen at the same time, depending on how well and widely known a particular species is.
Most species — such as those far removed from culture, or those too small to be noticed except through a microscope (显微镜) — never have a societal presence to begin with. Meanwhile, for other species, the societal presence can break with reality after a biological extinction.
“Species can remain widely known after they become extinct, or even become more popular,” says conservation biologist Uri Roll. “However, our awareness and memory of such species gradually becomes transformed, and often becomes incorrect, or disassociated from the actual species.”
Take the Spix’s macaw(金刚鹦鹉) for example, currently extinct in the wild: A 2013 conservation report from Brazil surveyed 242 children from the bird’s former habitat, and almost all of them incorrectly believed the species originated from Rio de Janeiro, because of its appearance in the 2011 cartoon movie Rio.
Finally, the researchers found various links between societal extinction and a lack of support for biodiversity protection. So, ifs important to keep the memories and the records of extinct species in order to realize what’s been lost.
1. When does a species most probably become societal extinct?| A．When it has difficulty in breathing. |
| B．When it faces some biological changes. |
| C．When it disappears unexpectedly in nature. |
| D．When it no longer exists in our memory and culture. |
| A．Relationship with humans. | B．Average length of life. |
| C．Biological importance. | D．Shape of the body. |
| A．They are not big enough to be seen. |
| B．They are closely linked to a specific culture. |
| C．They are in the process of societal extinction. |
| D．They are cleared away from scientific studies. |
| A．To draw a conclusion. | B．To prove an opinion. |
| C．To introduce a topic. | D．To make a prediction. |
4 . National Parks, Wyoming
A bike tour is a great way to access busy national parks. This six-day trip is a big loop out of Jackson 5s Rustic Inn Creekside Resort and Spa, with stops along the way to check out hot springs, moose (驼鹿) and the grizzly bear. Available June to September 2022; $3,095, vbt.com
Death Valley, California
This three-day trip starts with a meet and greet in Las Vegas before exploring a ghost town, on foot. Then the biking starts through the desert, heading to a hotel in time to catch a Death Valley sunset. The next day ifs a nearly 50-mile ride to the edge of a crater (火山口). Available October 2021 through December 2022; $1,649, rei.com
Finger Lakes, New York
This 121-mile bike tour snakes its way around Canandaigua lakes and rolling hills over five days. It starts with a wine tasting, then lunch and a ride through farmland. With only about 30 miles a day of riding, there’s plenty of time to try local wines and have a spa. Available June to July 2022;$5,499, trek travel. com
Florida Keys
Unless you book a custom trip, tours that include teens and kids can be difficult to find. Keep younger travelers engaged by mixing bike rides with other activities, like kayaking (独木舟), snorkeling, hiking and stand-up paddle boarding. This five-day trip heads south from Miami, through the Everglades National Park, and out to Key West. Along the way kids can learn to fish like the locals while parents can relax in excellent accommodations. Available December 2021 and December 2022;from $3,999, backroads. com
1. Which tour is the most suitable for families?| A．National Parks, Wyoming | B．Death Valley, California |
| C．Finger Lakes, New York | D．Florida Keys |
| A．Learning to fish. | B．Seeing wild animals. |
| C．Appreciating the sunset. | D．Trying local wines. |
| A．Seeing the world from a bike seat. | B．Having a taste of farm life. |
| C．Exploring local food on a bike trip. | D．Getting the most out of national parks. |
5 . Do you remember that cold you had when you were 10? No? Well, your body does. Each time you faced some viruses, and after you fought them off, your body stored a memory to recognize these threats if they appeared again. It is the memory of cell in your immune system (免疫系统).
The immune system is so adaptable and long-lasting that it might be able to help our bodies to become immune to viruses we’ve never met, or even give us universal immunity. But how does it do the job?
Our first level of defense is physical, like your skin. If something goes through skin, your second line of defense comes into action. White blood cells will search your body for these dangers and attack them. They’ll call in helpers to kill the dangers, and start an alarm system called inflammation (发炎). This is your body’s innate (先天的) immune system at work.
But it isn’t always enough, especially if a more serious threat appears. Some viruses can double in your body every 20 minutes. This can quickly defeat that innate immune system, but luckily, we’ve developed a more complicated line of defense to stop these terrible enemies: the adaptive immune response.
This army of cells is like your body’s special army, and its best soldiers are antibodies (抗体). Each antibody carries a unique area with a special shape that allows it to latch onto one particular enemy, just like a key fits into its lock. When one antibody catches its enemy, it can work together with all your body’s defenses to fight this enemy. And your immune system learns from this fight so it can attack even more strongly if you ever meet that enemy again in the future. That’s called being immune to something.
1. What is the function of our memory of cell?| A．It works as a warning of our health condition. |
| B．It strengthens our immune system as we grow older. |
| C．It helps to identify the bacteria our body has met before. |
| D．It stops us suffering from the same disease again and again. |
| A．Inflammation is a preventive response. |
| B．The first level of defense is easy to break. |
| C．White blood cells often work independently. |
| D．Helpers may build an alarm system against enemies. |
| A．Seize. | B．Free. | C．Monitor. | D．Suspect. |
| A．How the viruses try to get into our body. |
| B．What we should do to keep from new illnesses. |
| C．How the immune system helps us fight diseases. |
| D．What our minds do to store the sickness memory. |
6 . In a fast developing world, many old-fashioned skills seem to be disappearing. It’s hard to find people who know such skills as sewing, but a few decades ago, it was common for every person to learn them.
Now many would think sewing isn’t as useful today. The garment (服装) industry is producing clothing that is cheaper, faster and more fashionable than ever, making it possible to buy a suit for less than $10 at home.
However, that doesn’t mean clothing isn’t indestructible (破坏不了的). Garments with simple tears that could be fixed in seconds with a needle are just thrown away. This causes more than 26 billion pounds of garbage and millions of dollars wasted because of a tear. Even dirty or worn clothing that still has plenty of usable cloth is being thrown away.
The ability to create hand-made clothes doesn’t only reduce waste. It is also tailor-made just for you. Most buy clothes made for a general body type, and to get it tailored by a professional is expensive. So why not do it yourself?
Perhaps the greatest problem of sewing is simply the time involved. Buying a skirt online takes a few seconds. Making a skirt can take weeks. But learning to sew doesn’t always involve complicated projects. Instead they might just be simple adjustments to help the garments fit or match your style.
Schools could easily teach sewing. Yet, they focus more on college preparations, ignoring traditional skills. Actually sewing is a valuable skill to be used in daily life. It wouldn’t take much time to teach children how to sew.
So, instead of letting old things die in this new age of the Internet, how about learning some of the lost skills that helped us for so long?
1. Why do some people think the sewing skill is less useful?| A．Because cloth is too expensive. |
| B．Because sewing is a bit boring to learn. |
| C．Because hand-made things are easily broken. |
| D．Because clothes are cheaper and convenient to buy. |
| A．It contributes to creativity. | B．It’s environmentally-friendly. |
| C．It pushes the garment industry. | D．It gives costumers a typical look. |
| A．They make the skills easy to learn. | B．They set the skills as basic subjects. |
| C．They make every effort to teach the skills. | D．They fail to give the skills enough attention. |
| A．Supportive. | B．Doubtful. | C．Uncaring. | D．Opposing. |
7 . The green and red watermelon is a sweet, refreshing summer snack. But it wasn’t always so sugary or brightly colored. So what did watermelons originally taste and look like, and from where did they come?
The fruit isn’t from the Fertile Crescent of ancient Mesopotamia, as so many other domesticated (家养的) crops are, research shows. Susanne Renner, a scientist, and her colleagues carried out comprehensive genetic sequencing (基因测序) of the domesticated watermelons — the kind you might find on supermarket shelves — along with six wild watermelon species.
“We found the modern genomes (基因组) of the domesticated watermelon are more closely related to the Sudanese wild type than any other that we analyzed,” she said. The Sudanese wild watermelon has some obvious differences from the domesticated version. “The flesh is white and not very sweet, and it’s mainly used as animal feed,” Renner said. Nevertheless, the genetic similarity between the two species led the researchers to conclude that the Sudanese fruit is probably a precursor (前身) to the red and sweet domesticated watermelon.
It’s likely that ancient farmers grew non-bitter varieties of the wild watermelon and thus increased its sweetness over many generations through the domestication process. The red color is probably also thanks to artificial selection, in which farmers likely favored and selectively bred red fruit.
We already knew that the ancient Egyptian king Tutankhamun was buried with watermelon seeds 3,300 years ago, yet that isn’t sufficient proof of a domesticated, sweet watermelon. But then, Renner found an image of a watermelon-like fruit on an ancient Egyptian tomb painting, thought to be more than 4,300 years old. In a separate tomb, another image showed the watermelon cut up in a dish alongside other sweet fruits. This realization, coupled with Renner’s genetic findings, suggests that the watermelon was most likely domesticated around that time either in Egypt or within trading distance of the ancient empire.
“Historically speaking, that’s a very significant finding,” said Hanno Schaefer, a professor of plant biodiversity. “It’s becoming clearer that we’ve greatly neglected the North African region. We’ve focused too much on the Fertile Crescent and we need to invest more resources into studying the agriculture of North Africa.”
1. What can we learn about the Sudanese wild watermelon?| A．It is brightly colored and sugary. |
| B．It is consumed mainly by animals. |
| C．It has no connection with the domesticated type. |
| D．It has more differences than similarities to the domesticated type. |
| A．More resources will be devoted to agriculture research in South Africa. |
| B．The domesticated watermelon has a history of at least four thousand years. |
| C．The domesticated watermelon probably developed from the Sudanese type. |
| D．Few domesticated crops are from the Fertile Crescent of ancient Mesopotamia. |
| A．The history of the Sudanese wild watermelon. |
| B．Where wild watermelons actually come from. |
| C．The characteristics of domesticated watermelons. |
| D．How domesticated watermelons came into being. |
| A．Favorable. | B．Doubtful. | C．Critical. | D．Tolerant. |
8 . The fruit-tree pinhole borer (针孔蛀虫), as its name implies, makes holes in fruit trees. It lays its eggs and raises its young in the galleries thus created . Yet the beetles (甲虫) do not feed directly on the wood they bore into. Instead, they devour fungi (真菌) that grow on the wood thus exposed.
Researchers have long suspected that this is a form of farming, because they have evidence that the beetles carry spores (孢子) of their preferred crop, R. sulphurea, into their smallholdings—in effect, sowing it there.
Observations of natural fruit-tree pinhole-bore r dwellings suggest that R. sulphurea grows in them more abundantly (大量地) than might be expected, given all the fungal competition around—but not why. To check whether the beetles are, indeed, weeding their crop, Janina Diehl and Peter Biedermann of the University of Freiburg did an experiment.
In the laboratory, they had mother beetles of the little wood bore restablish nests, in which the typical fungal gardens formed. But before the beetles had started laying their eggs, they collected all of the beetles and then returned half to their dwellings while leaving the other nests empty. Genetic analysis of the fungal gardens after 40 days showed that the presence of the beetles had greatly changed the fungal community. Twenty days after that, they sampled the gallery walls for fungi.
As they had hoped and expected, R. sulphurea was much more abundant in beetle-tended galleries than in those without residents. In the former, it made up half of the fungal mass extracted. In the latter, less than a third. These beetles are indeed weeding their crop.
“Further research into how exactly the beetles suppress the growth of weed fungi could alsoprovide worthwhile insights for human agriculture, which is struggling with weed resistance, for example,” says Biedermann. “It’s highly exciting for us to see how nature has been doing this for 60 million years. We humans can still learn something from these mechanisms.”
1. What does the underlined word “devour” in paragraph 1 mean?| A．Sow. | B．Tend. | C．Eat. | D．Move. |
| A．The number of the mother beetles. | B．The presence of the beetles. |
| C．The quality of food fungi. | D．The types of weed fungi. |
| A．They weed crops. | B．They feed on fruit. |
| C．They live in groups. | D．They lay eggs in trees. |
| A．The research findings are of little value. |
| B．Measures should be taken to protect the beetles. |
| C．Fungi cause much damage to human agriculture. |
| D．Further research to the beetles might benefit farmers. |
9 . There is a five-and-a-half-mile bike path sitting in the middle of an eight-lane highway(八车道公路), topped with a solar panel(太阳能板) that lights up the streets below in South Korea. But this is not an ordinary bike path. It started as an idea to produce clean energy while giving people a place to exercise at the same time. South Korea built this eco-friendly bicycle lane that connects the cities of Daejeon to Sejong in 2014.
The 13-foot-wide path set in the middle of a highway is unique in South Korea, where most bicycle paths are built next to walkways. But what really makes the path stand out is its one-of-a-kind feature—a solar panel-lined roof. Several other city governments in South Korea have built bike roads with solar panels, but this particular road in Sejong remains the longest and the only one set in the middle of a highway.
With 7,502 solar panels fixed at intervals(间隔空间) of about 30 inches, the paneling covers 3 miles of the 5.5-mile cycling highway and is capable of producing an average of 2,200 MWh of eco-friendly electricity every year that powers many of the streetlights and electronic displays in Sejong. The Korea Western Power Co., Ltd. is in charge of checking and repairing the solar panels to keep up the power efficiency(效率).
“Solar panels in public equipment are part of a trend(趋势) in clean energy,” Kim Geun-ho, a researcher from the Green Energy Institute said. “At the beginning stage, solar power generation was mostly built in vast farmland and mountainous areas. It moved on to public equipment rooftops, and finally evolved to play the role of a shelter and power generator at the same time, in this case, a roof on top of a bike road.”
“This is the fastest bike road I can take from my home in Daejeon to my workplace in Sejong,” said Park Yoon-soo, who has been going to work every day using the solar panel bike road for the last two years. “I have always appreciated the solar panel roofs because they become good shade under strong sunlight, and a roof when it rains.”
1. For what purpose was the bike path built?| A．To try out an idea. | B．To get clean energy. |
| C．To solve traffic jams. | D．To encourage less driving. |
| A．Its width. | B．Its solar panels. |
| C．Its location. | D．Its energy output. |
| A．Survived. | B．Happened. | C．Waited. | D．Developed. |
| A．It is convenient. | B．It is energy-saving. |
| C．It is a good place to relax. | D．It is money-saving high tech. |
10 . Inakadate, a Japanese village of around 7, 000 people, is considered the home of a rice field art form. In the early 1990s, local authorities realized that youths were moving to big urban centers in large numbers, and started brainstorming for ways of breathing new life into the village. One of the proposed ideas was an art form inspired by the local’s traditional rice planting, done by hand for hundreds of years. Called Tanbo Art, it involved the use of different rice varieties to turn local rice fields into giant canvases (画布).
The first rice field artwork was displayed in 1993, when purple and yellow rice plants were used to create a detailed picture of Mt. Iwaki. The project was such a huge success that Inakadate authorities decided to turn it into a yearly event. Nowadays, a viewing platform is often set up somewhere above the rice field, from which people can admire the unique artwork.
To create the impressively massive field artworks, the locals use a technique unique to Japan, which involves surveying the rice fields, perspective drawing, and the planting of various types of rice plants to create the desired visual effect. Tanbo Art has come a long way in the last three decades, with designs gradually becoming larger and more complex.
Some of the most elaborate (精心制作的) rice field artworks created in Inakadate have required the use of no less than 10 rice plants in color. The process starts in the spring months, and by early summer, the fruits of this labor become clearly visible. July and August are the best months to visit this famous Japanese village.
There are many locals who say that rice field art has saved Inakadate, bringing in impressive numbers of tourists from all over the world every year, and boosting the local economy. The success of Inakadate inspired other rice cultivating communities to borrow the Tanbo Art concept, and today you can find this sort of impressive rice field artworks all across Japan.
1. The rice field art was originally built to ______.| A．promote its traditional rice planting | B．turn local rice fields into giant canvases |
| C．promote the tourist industry of the village | D．make the village more lively and energetic |
| A．farming | B．population | C．tourist industry | D．rice consumption |
| A．early spring is the best months to visit Inakadate |
| B．many countries also follow the example of Inakadate |
| C．a viewing platform can help tourists enjoy the rice field artworks |
| D．no less than 10 rice plants were used to create the first rice field artwork |
| A．Travel. | B．Economy. | C．Technology. | D．Local news. |
