1 . With low or no-carbohydrate diets rising in popularity in recent times, the potato is now regularly overlooked in favour of other vegetables. In fact, research literature has previously indicated potatoes may have a detrimental effect on health, such as increasing the possibility of developing Type2 diabetes(糖尿病).
However, new research done by Edith Cowan University (ECU) has shown while potatoes may not have all the same benefits as some other vegetables, such as lowering risk of Type 2 diabetes, health issues associated with potatoes may actually be due to how people are preparing them and what they’re eating them with.
A recent analysis of this study led by Dr Nicola Bondonno from ECU’s Nutrition and Health Innovation Research Institute found people who consumed the most vegetables were 21 percent less likely to develop Type 2 diabetes than those who consumed the least amount of vegetables. PhD candidate Pratik Pokharel carried out work on the analysis and said while potatoes didn’t have the same impact on Type 2 diabetes, they also didn’t have any negative effect.
“In Denmark, people consume potatoes prepared in many different ways. In our study, we could distinguish between the different preparation methods. When we separated boiled potatoes from mashed potatoes(土豆泥), fries or crisps, boiled potatoes were no longer associated with a higher risk of diabetes: They had a zero effect,” said Pokharel.
“In our study, people who ate the most potatoes also consumed more butter, red meat and soft drinks-foods known to increase your risk of Type 2 diabetes,” said Pokharel. “We should separate potatoes from other vegetables in regard to messaging about disease prevention but replacing refined grains such as white rice and pasta(意大利面食)with potatoes can improve your diet quality because of fibre and other nutrients found in potatoes.”
1. What does the underlined word “detrimental” in paragraph 1 mean?| A．Magical. | B．Protective. | C．Fantastic. | D．Negative. |
| A．The effects they have caused. | B．The ways they are consumed. |
| C．The places where they are planted. | D．The results previous studies have shown. |
| A．Fries. | B．Crisps. | C．Boiled potatoes. | D．Mashed potatoes. |
| A．Critical. | B．Opposed. | C．Indifferent. | D．Objective. |
2 . There have been a few times in my life when I felt very lonely. I particularly remember my loneliness when I moved to New York City. I had a couple of friends in the city, still, it was a time in my life when I needed to put forth some effort to form more meaningful relationships. But the more I went out to parties, the more disconnected and lonely I felt. Feeling lonely in a room full of people, or in my case, a whole city packed with people everywhere, was the loneliest I have ever felt.
So, rather than trying a new way to make friends, I was more likely to ignore phone calls from friends, and I looked at social invitations and opportunities to meet new people as drudgery. Looking back on this period of loneliness, I wonder at the way I isolated myself instead of reaching out to those who were willing to keep me company and offer friendship.
What I have learned from my own experience and the experience of many of my friends is that more often than not, those who feel lonely choose isolation. Indeed many of my own friends describe avoiding social life as a way of dealing with feelings of loneliness.
This behavior is somewhat common, and new research takes a big step towards explaining this behavior. According to leading experts on the loneliness, Stephanie and John Cacioppo, there is an evolutionary explanation for this tendency to isolate when we are feeling lonely. By monitoring lonely people’s brainwaves, they found that lonely people tend to respond negatively to social life. “Loneliness causes some brain-related changes that put us into a socially nervous mode,” Dr. Christian Jarrett explains.
Making ourselves aware of this evolutionary natural tendency could actually be the first step in fighting loneliness. Once we know that we are more sensitive to negativity during lonely spells, we can focus our energy on resisting the desire to put up walls.
1. What happened to the author after she moved to New York City?| A．She had no friends there. | B．She lacked confidence there. |
| C．She needed opportunities for parties. | D．She felt lonely even with people present. |
| A．By refusing to go out to meet others. | B．By looking for solutions on the Internet. |
| C．By trying various methods to make friends. | D．By doing some drudgery to forget her problem. |
| A．Lonely people tend to disgust social life. |
| B．People respond negatively to lonely people. |
| C．Loneliness can do great harm to people’s health. |
| D．Loneliness can be caused by a socially nervous mode. |
| A．We shouldn’t be influenced by negativity. |
| B．We shouldn’t choose isolation when we feel lonely. |
| C．We should make friends based on scientific findings. |
| D．We should spend more time with friends than relatives. |
3 . There’s no doubt that football is the global sport. Though basketball, tennis, and other sports are popular too, nothing comes close to football. Being played in every country in the world, football provides dozens of superstars. The numbers are greater when compared to any other sport, and this drives the popularity of football up. Have you ever wondered when the sport started and became popular?
Football has its origin (起源) in China and has a history of more than 2,000 years. However, modern football originally appeared in Britain in the 19th century. Folk football matches had been played before in many cities and towns, but never on a professional level.
Football became a winter sport game played in different schools. The rules were carried out by each school, and this made it difficult for players to play an official game with each other. It all changed in 1849 at the University of Cambridge that invented a set of standard rules known as the Cambridge rules of football. From that moment, a new star sport was born.
By the early 20th century, football had spread all across Europe. In 1904, FIFA was set up. There are seven original members, including France, Denmark and Spain, FIFA became the governing body for many associations in Europe.
England’s international success improved the popularity of the sport in the country. The league (联赛) in Britain was set up in 1992. From the 1990s, it became a truly impressive piece of football organization, becoming the world’s top football league in the process.
Football is obviously the most popular sport in the world. It is impossible for any other sport to take its place, especially with leagues spending billions of pounds every year to stay in the focus.
1. What is the author’s purpose of writing paragraph 1?| A．To describe the level of football. |
| B．To introduce the topic of the text. |
| C．To debate the main idea of the text. |
| D．To introduce famous football leagues. |
| A．In China. | B．In France. |
| C．In Britain. | D．In Spain. |
| A．The rules always changed. |
| B．There were no common rules. |
| C．The season made players hard to win. |
| D．Officials made players misunderstand the rules. |
| A．By time order. | B．By space order. |
| C．By listing numbers. | D．By giving examples. |
4 . In my teenage period 1 always had wished to pass a geography exam, remembering all the locations of the countries on a map or avoid embarrassing situations of suddenly forgetting the person’s name standing right in front of you. Luckily for me, now one theory that memory, like other muscles in the body, can be strengthened aroused my curiosity. But instead of practicing with flash cards, there may be an interesting way that we can improve our memory while we sleep.
The researchers hold that sleep is when the brain transfers short-term memories experienced throughout the day into long-term memories. This process is called memory consolidation. They have been working on a DIY version of this task to see if we male volunteers can improve memories through the use of sound in sleep. In the test, every time we see the picture, we can hear the related sound. Then we take a nap and they record our EEG.
They’re interested in one of the four periods of sleep: slow-wave sleep, when scientists believe that memory consolidation can happen. In this deep period of sleep, they do something that we don’t know. When we wake back up and do the task again, we find we do better than before a nap. That is because they played a clue during our sleep, for example, a car — we would remember the position of that car when we woke back up again. But if they didn’t play the clue during the sleep, for example, a guitar, we’d be less likely to remember that guitar when we woke up.
I was a huge skeptic when I first heard that result. But they ran this experiment on two female groups and the results were significant. It’s not that you remember things better; it’s that you forget them less. And the facts and memories we collect throughout the day are easily lost and forgotten.
So if you’re like me and a bit forgetful, perhaps a solution is a pair of headphones and a soft couch.
1. How did the author feel about his memory when young?| A．He felt discouraged. | B．He was moved. | C．He felt inspired. | D．He was proud. |
| A．By playing a clue before they sleep. | B．By playing a clue when they sleep. |
| C．By showing a picture before they sleep. | D．By drawing a picture when they sleep. |
| A．He is convinced of the experiment results. | B．He throws doubts on it at present. |
| C．He believed in it from beginning to end. | D．He wanted to prove it in the future. |
| A．Ways to avoid forgetfulness are funny. | B．Headphones and a soft couch are useful. |
| C．Many people can’t avoid forgetting in life. | D．The solution to being forgetful is practical. |
5 . People use laughter to connect and bond with others. It’s how we tell friends that we find their jokes funny, or how kids in a park show that they are having fun. Laughter is so important to humans, even if they belong to different cultures or speak different languages. What about animals? Scientists are studying if there is a connection between animals’ laughing and playing.
Sasha Winkler, from the University of California, Los Angeles (UCLA), studies biological anthropology (人类学)，including the study of animal behavior. She noticed that the small monkeys she worked with, liked to play together by chasing each other. While having fun together, they made panting (喘气) sounds, almost like they were out of breath, which reminded Winkler of their quiet laughter. This made Winkler wonder whether other animals did so while they were playing.
To find out whether other animals laugh and play, Winkler teamed up with another scientist named Greg Bryant, a professor and vice chair in the Department of Communication at UCLA. Together, they found and read dozens of reports written by other scientists who study animals. Winkler and Bryant looked for any mentions in any animal of sound signaling like the panting of the monkeys during their playing.
In April 2021, Winkler and Bryant published their findings in a science journal. Through their research, they identified 65 species or groups of animals, which laugh while playing. The animals that laugh the most include primates (灵长类) like monkeys and apes, rodents (啮齿动物) like rats, and mammals that live in the ocean like dolphins. Their work won’t only help us understand animals better but it could also help us understand how humans develop or change over time. Next, they will carry on more study to find more.
1. What is the function of paragraph 1?| A．To conclude the main idea. |
| B．To put forward the topic. |
| C．To offer the supporting evidences. |
| D．To add the background information. |
| A．They can hardly breathe. |
| B．They tend to laugh separately. |
| C．They laugh at a low sound. |
| D．They don’t laugh at all. |
| A．It is great progress in the study of animals and humans. |
| B．It is only based on the findings in a science journal. |
| C．Over 65 groups of animals laugh while playing. |
| D．They do the research only by studying primates and rodents. |
| A．Science. | B．Education. | C．Health. | D．Entertainment. |
6 . As of 2020, the world's biggest lithium-ion (锂离子) battery is hooked up to the Southern California power grid and can provide 250 million watts of power, or enough to power about 250,000 homes. But it's actually not the biggest battery in the world: these lakes are.
Wait - how can a pair of lakes be a battery? To answer that question, it helps to define a battery: it's simply something that stores energy and releases it on demand. The lithium-ion batteries that power our phones, laptops, and cars are just one type. They store energy in lithium ions.
How do the two lakes store and release energy? First, one is 300 meters higher than the other. Electricity power pumps that move billions of liters of water from the lower lake to the higher one. This stores the energy by giving the water extra gravitational potential energy. Then, when there's high demand for electricity, valves (阀门) open, releasing the stored energy by letting water flow downhill to power 6 giant turbines that can generate 3 billion watts of power for 10 hours.
Unfortunately, neither of the giant batteries we've talked about so far is big enough to power multiple cities. The two lakes setup requires specific geography, takes up a lot of land, and has high upfront costs to build. The giant lithium-ion battery in California can power about 250,000 homes, yes, but only for an hour. Lithium-ion batteries also require certain heavy metals to make. These resources are limited, and mining them causes environmental damage. Inventors all over the world are rising to the challenge of making batteries that can meet our needs - many of them even weirder than the two lakes.
1. Why is the world's biggest lithium-ion battery mentioned in Paragraph 1?| A．To make a comparison. |
| B．To introduce the topic. |
| C．To stress its importance. |
| D．To declare a fact. |
| A．With the help of the pumps, the two lakes store energy. |
| B．The water flow by itself to release the stored energy. |
| C．The two lakes setup is able to power multiple cities. |
| D．Lithium-ion batteries are environmentally friendly. |
| A．Inventors' worries. | B．Inventors' efforts. |
| C．Stranger batteries. | D．New challenges. |
| A．Battery Inventors Face New Challenges. |
| B．The World's Biggest Battery Looks Nothing Like a Battery |
| C．Giant Batteries Fail to Meet Our Needs. |
| D．Newly-invented Batteries. |
7 . Do you often listen to music at loud volumes (音量)？Over one billion (十亿) young people are at risk of hearing loss (失聪) because of listening to loud noise for long periods of time. Listening to music or watching a TV show at loud volumes is harmful to your hearing.
The United Nations has standards for safe listening. It is not safe to listen to sounds that are louder than 85 decibels (dB 分贝) for eight hours or 100 dB for 15 minutes. The sound of a busy road is about 85 dB and the sound of a rock concert can be about 100 dB.
Loud noise is harmful to the inner ears (内耳). Most of us are born with about 16,000 hair cells (听毛细胞) in our inner ears. However, listening to loud noise for a long time can make these cells work too hard and cause some of them to die. This is what causes hearing loss.
Some people might think that their music isn't all that loud. But this can depend on where you are. For example, if you are in a noisy place like the subway, you might turn up your music too loud without realizing it. Later, when you listen to it at the same volume in a quiet place， you might feel uncomfortable.
The World Health Organization said the “safe level" for most sounds is below 80 dB for up to 40 hours a week. A level of 80 dB is roughly equal to (大约相当于) the noise of a subway.
1. Many young people are at risk of hearing loss because they________.| A．watch TV every day |
| B．listen to music every day |
| C．listen to loud noise in the subway |
| D．listen to loud noise for a long time |
| A．80 dB | B．85 dB |
| C．100 dB | D．110 dB |
| A．The inner ears. | B．The brain. |
| C．The heart. | D．The eyes. |
| A．Keep the Loud Volumes | B．Loud Noise Is Harmful to Hearing |
| C．The Risk of Listening to Music | D．Loud Noise Stops Ears from Working |
