1 . Have you ever imagined an insect-inspired robot, which weighs less than a gram, could one day help out in surgery (外科手术)?

Scientists have designed this small, “insect-bot” called mCLARI that can control and even change its body shape as it travels in different environments to fit through gaps. It’s 2 centimeters long, weighs less than 0.97 grams and can travel at a speed of 6 centimeters per second.It’s the smaller, faster replacement to CLARI, which was designed by the same team.

“Because of the robot’s small size and ability to change shape, we expect usage of this technology in four important areas,” the lead author Kaushik Jayaram said. These include disaster (灾害) response , check on high-value objects, environmental monitoring and medical treatment.

“In the long term, we hope such robots will be used more widely in moving through human bodies and performing surgeries that can’t be easily done at present,” Jayaram said. With mCLARI, Jayaram’s team is moving closer to creating robots that can fit in different environments—just like the insects they’re inspired by.

The mCLARI robot has four legs and can move in narrow spaces by changing between running forward and side-to-side and can use different speeds in human bodies. Its legs are joined to its body through joints (关节), which enables mCLARI to change its body shape based on the environment it is in. For example, its legs can be lengthened up to 50% in certain spaces.

As follow-up work, the scientists want to give mCLARI more power and sensing ability while helping the surgeries. “We are also excited about understanding the effect of shape change on improving functions of robots,” Jayaram said. “And this is sure a great one-step forward of the technology. The robot will have entered the market by 2025 and will bring greater benefits to mankind, especially in medical treatment.”

1. What is paragraph 3 mainly about?

A．Possible application fields of the robot.	B．Different types of the robot.
C．Several important features of the robot.	D．Working process of the robot.

2. Which of the following can best describe mCLARI?

A．Valuable but uncontrollable.	B．Modern but high-cost.
C．Heavy and time-consuming.	D．Advanced and effective.

3. What is Jayaram’s attitude towards the robot?

A．Worried.

B．Positive.

C．Doubtful.

D．Uninterested.

4. Which of the following is a suitable title for the text?

A．Jayaram: A Scientist Studying Robot Intelligence

B．mCLARI Is Already Widely Available in the Market

C．CLARI: A Robot Invented by Inspiration from the Insects

D．A Tiny Shape-changing Robot Will Help Perform Surgeries

2 . A new study, led by Dr. Rebecca Stone, has shown that children as young as four years old eat 79% more calories when they are bored, compared to when they are in a normal mood (情绪) .

The researchers have explored the behaviors that make children more likely to eat when they experience negative emotions. Often when children experience bad emotions such as boredom or sadness, caring adults will use food to soothe them. However, this behavior, known as emotional feeding, appears to increase the possibility of children eating more when they are in low spirits. As time passes, too many calories intake will have a significant effect on children’s health both mentally and physically.

Dr. Stone stresses that the experience of boredom is important in the development of children’s sense of self and creativity, so she does not recommend that children should avoid being bored. Instead, she suggests children learn to experience boredom without turning to food. She also suggests that parents turn their children’s attention away from food when they feel bored, or restructure the home food environment to make it less likely that children turn to food in response to being bored.

While there do appear to be individual differences between children in terms of their eating when bored, it is helpful to know that the feeding practices that adults use around food might shape the likelihood of this happening. Although it is attractive to use food as a tool to help children, emotional feeding might lead to greater emotional eating in the future. It is important for parents and caregivers to be aware that this short-term fix could create future problems.

It is hoped that, on the original basis of the study, the team will deeply explore other negative mood states in children and offer advice and support for families to find more effective ways to manage challenges around children eating behavior.

1. What does the research focus on?

A．How children form good living habits.	B．How children face challenges in life.
C．How boredom impacts on children eating.	D．How parents bring up their children.

2. What does the underlined word “soothe” mean in paragraph 2?

A．Ignore.

B．Comfort.

C．Excuse.

D．Control.

3. What can we know about emotional feeding?

A．It makes children lose weight quickly.

B．It creates a new home food environment.

C．It cannot keep children trusting their parents.

D．It may not help handle bad moods in the long run.

4. What does the last paragraph mainly tell us?

A．Expectations for further studies.

B．The importance of going on a diet.

C．The necessity of managing moods.

D．Ways to strengthen family relationship.

3 . As we all know, swimming is great fun. But it often comes with _________. Drowning (溺水)is a real possibility even for the most _________ swimmers. However, this dangerous situation can be changed with watchful eyes. This summer in Florida, two young men helped to _________ one drowning death.

Griffin Emerson, a 6-year-old child, swam in an apartment block’s pool. He enjoyed the pool’s _________ area. But he began to _________ toward the deeper part slowly, struggling to keep his head above water.

All that came about as no one else, including his mother, seemed to _________ him. Griffin’s frightening _________ in the water happened over the course of a full minute, ending up with the child going down to the _________ of the pool.

However, one young man, Noah, did find Griffin in the pool. He told his friend Weston to call 911 at once. And Noah _________ to jump into the pool to ____________ the 6-year-old.

Noah made it to Griffin, caught him and ____________ him to the surface and then to the side of the pool. Before the emergency services’ arrival, Noah and Weston tried their best to ____________ life-saving steps. ____________, a few minutes later, Griffin recovered his breath.

Griffin’s mother was ____________ to Noah and Weston for their heroic actions. But the two young men thought it was no big deal and hoped that this act of kindness would be ____________.

1.

A．difference

B．attention

C．danger

D．limitation

2.

A．curious

B．ordinary

C．relaxed

D．experienced

3.

A．prevent

B．identify

C．watch

D．suffer

4.

A．quiet

B．common

C．shallow

D．separate

5.

A．run

B．move

C．jump

D．climb

6.

A．recognize

B．notice

C．consider

D．persuade

7.

A．struggle

B．complaint

C．speed

D．escape

8.

A．side

B．center

C．bottom

D．corner

9.

A．hurried

B．regretted

C．continued

D．waited

10.

A．catch up with

B．keep track of

C．drive away

D．check on

11.

A．tied

B．directed

C．dropped

D．pulled

12.

A．recall

B．describe

C．perform

D．explain

13.

A．Sadly

B．Luckily

C．Obviously

D．Surprisingly

14.

A．familiar

B．patient

C．generous

D．grateful

15.

A．paid forward

B．brought in

C．taken over

D．looked into

5 . UC Berkeley Youth Summer Camps

UC Berkeley Youth Summer Camps will provide a wide variety of one-week outdoor experiences and activities for young people on summer camps 2024. Here are four best summer camps.

Afternoon Adventures Camp

Afternoon Adventures Camp offers many adventurous activities around the Berkeley Marina. Campers must be aged 8-10 to sign up. They will explore the ocean plants and join in other activities such as doing outdoor exploration, playing outdoor group games and going skateboarding. This camp provides an opportunity for younger campers to develop lasting friendship through outdoor games.

Blue Camp

Blue Camp grew from the idea that all children need opportunities to take part in regular physical activities to support their mental health. This camp for children aged 7-12 includes art trainings, swimming lessons, free play and group games to create a fun and well-rounded camp experience. The camp is made up of three age groups to ensure safety.

Eco(生态)Adventures Camp

Eco Adventures Camp allows campers to have the chance to explore various environments around Berkeley. Campers will practice observing through their senses and record their findings while they use scientific methods to explore various creatures of the Bay Area.

Discovery Camp

Discovery Camp is designed specifically with the 10-12 year-old in mind, with challenging new ways to explore the Bay Area. Activities may include hikes(徒步旅行)to regional waterfalls, cycling to a beach picnic lunch and rock climbing. The full day course covers a series of regional adventures, often with several stops in a day. All campers can enjoy the bus service to and from the campsites.

1. What can a camper do in Afternoon Adventures Camp?

A．Play indoor group games.

B．Watch the nearby waterfalls.

C．Keep records of unique animals.

D．Participate in skateboarding activities.

2. Which camp best suits the camp-goers who are interested in swimming?

A．Afternoon Adventures Camp.	B．Blue Camp.
C．Eco Adventures Camp.	D．Discovery Camp.

3. What is special about Discovery Camp?

A．Campers can enjoy free beach lunch.

B．Campers are offered public transportation.

C．Campers can observe various sea creatures.

D．Campers are divided into different age groups.

7 . There are many differences in ways of thinking between East and West. Many of them are reflected in daily behaviour. In particular, Chinese people sometimes attach more importance to their appearance and social status than to their inner qualities, while Westerners think the opposite. However, Socrates (Ancient Greek philosopher) and Confucius share significant similarities that are universal.

Both philosophers share several teachings in common; for example, their understanding of the nature of knowledge and their opinions on education. Socrates believed “There is only one good, knowledge;and only one evil, ignorance.” Similarly, Confucius said, “Isn’t it a pleasure to study and practice what you have learned?” But both also acknowledge the limits of knowledge. Socrates said: “All I know is that I know nothing.” Similarly, Confucius said, “When you know a thing, to hold you know it; when you don’t know a thing, to allow you don’t know it-this is knowledge.”

However, there are important differences in their understanding of morality. Confucius believed each person should follow certain regulations according to virtue(德行). Everyone should play their role in a society where people are interdependent in order to achieve harmony in the whole society. For instance, when asked how to govern a country, Confucius stated “An emperor should act like an emperor, a subject should act like a subject.” Socrates, however, places self-knowledge over social knowledge.

Another difference between them is their attitude towards political domination(支配). Confucius believed the best way to govern a country isn’t through legal system, but through virtue. Socrates, by contrast, declared that “nothing is more important than justice”.

Why have East and West developed such different cultural values? A widely accepted theory holds that Eastern civilization was an agricultural civilization. Hence the need for a collective society and friendly relations with neighbors was strong. Western civilization, however, was nomadic(游牧的). Their mobility makes them less dependent on society after migration.

In spite of their differences, the two cultures have more in common than differences. The shared concern for moral values in the teachings of Socrates and Confucius also shows us more fundamental similarities between Eastern and Western cultures in their pursuit of virtuous lives.

1. What do the two philosophers share about knowledge?

A．The learning of knowledge is easy.	B．The learning of knowledge is endless.
C．A man without knowledge is foolish.	D．A man shall not pretend to understand.

2. Which of the following reflects the thoughts of Confucius in terms of morality?

A．Nothing is more important than a legal system.

B．I am not a Chinese, but a citizen of the world.

C．Not everyone should play his own role in society.

D．A man does what is proper to the position he is in.

3. What is the root cause of the differences between Eastern and Western cultural values?

A．The difference in political atmosphere.	B．The difference in the length of history.
C．The difference in economic development.	D．The difference in levels of social dependency.

4. What is the passage mainly about?

A．Reasons for similarities of Eastern and Western cultures.

B．The introduction of great figures of two different cultures.

C．Comparisons of the thoughts of the two great philosophers.

D．The contributions of two great philosophers to civilization.

8 . It’s often said that we human beings can dream in a foreign language. Could dreaming in a foreign language improve our memory? Does dreaming in a foreign language mean we are making progress in learning that language?

Before we look at multilingual (多语言) dreams, first we need to look at sleep. The connection between sleep and language can be applied to how we learn any language, including our native language. Even adults still learn about one new word every two days in their first language. But, if we are going to remember that new word better, what matters is that we need to connect it with what we have learned. And in order to do that, we “need to have some sleep”, says Gareth Gaskell, a professor at the University of York.

It’s during sleep that the integration (整合) of old and new knowledge happens. At might, one part of our brain — the hippocampus — takes whatever new information it receives during the day and passes it on to other parts of the brain to be stored. The role that dreams play in this night-time learning process is still being studied, but “it’s entirely possible that during multilingual dreams, the brain is trying to connect the two languages”, says Marc, a researcher at a university in Bern, Switzerland.

So having multilingual dreams could mean that our brain is trying to remember a new word or phrase. However, it could also have an emotional (情感) significance. Danuta, a professor of psycholinguistics at the University of Silesia in Poland, suggests that multilingual dreams can express “fears or wishes” around learning a foreign language, including the wish to be a local speaker or to be accepted within a certain community.

We clearly still have a lot to learn about multilingual dreams, but one thing seems certain: if you’re trying to learn a new language, you can sleep on it.

1. Why does the author mention questions in paragraph 1?

A．To compare different ideas.	B．To introduce the main topic.
C．To present different types of dreams.	D．To discuss the human language ability.

2. What is the key element in memorizing a new word according to the text?

A．The other new words.	B．The native language.
C．The gained knowledge.	D．The speaking practice.

3. What can we learn about multilingual dreams?

A．They may influence people’s sleep quality.	B．They can reflect language-learning feelings.
C．They are the best option to learn a language.	D．They help to clear up the useless information.

4. Where is the text most likely from?

A．A novel.

B．A diary.

C．A guidebook.

D．A magazine.

9 . Jimmy Jiang envisions a future where every house is powered by renewable energy stored in batteries.

Jiang and his team at the University of Cincinnati have developed a new battery that could have far-reaching implications for the large-scale (大规模) energy storage needed by wind and solar farms.

“Batteries store renewable energy for when it’s needed, not just when it’s produced. This is crucial for getting the most out of wind and solar power,” Jiang said. “Energy generation and energy consumption is always mismatched. That’s why it’s important to have a device that can store that energy temporarily and release it when it’s needed.”

They described their novel design in the journal Nature Communications.

Traditional car batteries contain a mix of sulfuric acid and water. While they’re inexpensive and made from readily available materials, they have severe drawbacks for industrial or large-scale use. They have a very low energy density (密度), which isn’t suitable for storing sufficient power needed to power a city. And they have a low level for electrochemical stability, which means they can blow up.

Water has a voltage (电压) limit. Once the voltage of such a battery goes beyond the stability window of 1.5 volts, the water can decompose into hydrogen and oxygen, which is explosive.

But Jiang and his students have developed a battery without water that can generate nearly 4 volts of power. Jiang’s novel design does so by removing from a battery the membrane, which is a huge component of upfront costs and accounts for as much as 30% of the cost of the battery. They invented a new type of energy storage material that improves performance at a lower cost. “Membranes are also inefficient. They can’t separate the positive and negative sides completely, so there is always crossover,” he said.

The group has submitted temporary patent applications. “There is still a long way to go, but we’re advancing toward a dramatic battery transformation in the next decade. I’m confident about that. There is a lot of intense research going into pushing the boundaries of battery performance,” Jiang said.

1. What’s mainly talked about in paragraph 3?

A．Why batteries are essential.	B．How to store renewable energy.
C．Why green energy is needed.	D．How to conserve natural resources.

2. What’s the problem with traditional car batteries?

A．They’re too pricy.	B．They’re made of rare materials.
C．They’re slow to charge.	D．They have a potential explosion risk.

3. What can we say about Jiang’s novel design?

A．It may reshape the battery industry.	B．It’s inappropriate for large-scale use.
C．It may help minimize power consumption.	D．It’s subject to mature industry standards.

4. What is Jiang’s attitude towards the prospect of the battery?

A．Dismissive.

B．Uncertain.

C．Positive.

D．Pessimistic.

10 . For sharks, the Mesoamerican Reef, which stretches over 600 miles, is a busy highway. Sharks use it to find their way and it provides them with food and habitat.

But as with on-land highways, this superhighway can be dangerous. Overfishing, commercial development and illegal practices are endangering the species. “We’re seeing a continued decline in shark populations. Our goal is to turn that round.” says Rachel Graham, founder of Mar Alliance, a non-profit organization focused on conserving sharks.

By monitoring sharks, Mar Alliance can collect important knowledge on the species to help inform conservation and push for political action. But rather than acting in opposition to the local fishing community, MarAlliance enlists their help.

“They are the ones who are on the sea every single day,” says Graham, “and they’re the ones who decide the species’ future.”

MarAlliance employs up to 60 fishermen across its range, mostly on a project basis, training them to collect data, record and release fish. Not only does this provide an alternative income to fishing communities, making them less dependent on natural resources, but it also teaches them about the benefits of a healthy ocean ecosystem and how to fish sustainably.

Among them, Ivan Torres, who used to catch sharks to sell locally as food, has learned how critical they’re to the whole ecosystem, saying he’d never fish sharks any more.

If this attitude change continues to spread throughout fishing communities, Graham has hope for the shark populations. “The primary threat to sharks is unquestionably overfishing,” she says, “By reforming the industry, populations can bounce back.”

In 2020, Belize outlawed the use of gillnets, large panels of netting of trapping large sealife. The ban’s impact is already noticeable with a recorded 10-fold increase in shark populations.

But such regulations need to be copied along the whole superhighway for long-lasting impact, and countries need to find a sustainable balance between fishers and the fished. “We need to find a win-win strategy between fisher livelihoods and shark survival,” Graham emphasizes. “I hope that through education and providing an economic alternative for fishing communities, MarAlliance will help ensure safe passage for sharks along the reef”.

1. Which of the following best describes the Mesoamerican Reef for sharks?

A．Romantic but messy.	B．Vital but insecure.
C．Adventurous but beautiful.	D．Unfamiliar but reliable.

2. What does the underlined “they” in paragraph 4 refer to?

A．MarAlliance.	B．The fishers.
C．Monitoring authorities.	D．The sharks.

3. What contributed to Ivan’s attitude shift apart from education?

A．A stricter fishing ban.	B．The insurance payout he earned.
C．An offer of extra work.	D．The fishing communities’ intervention.

4. What is mainly stressed in the last paragraph?

A．Solution to overfishing.	B．Difficulties facing MarAlliance.
C．Impact of existing regulations.	D．Features of international cooperation.