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A recent study from Kyushu University and Osaka Metropolitan University suggests that stars in the early universe might have formed in soft molecular clouds, which make them float like cotton. This discovery was made by observing the Small Magellanic Cloud (SMC), a small galaxy near the Milky Way. The SMC has fewer heavy elements compared to our galaxy, making it similar to the conditions of the early universe about 10 billion years ago.

In our galaxy, molecular clouds that help form stars usually have a long thin shape. Scientists think the solar system was created in a similar way, where a large molecular cloud broke apart to form a core that eventually became a star. Over time, gravity pulled more gas and matter into these cores, leading to star formation.

Kazuki Tokuda, a researcher at Kyushu University, explains that understanding how stars formed in the early universe is challenging because the universe was mostly made of hydrogen and helium (氮) back then. To study this, the team used the ALMA radio telescope in Chile to observe the SMC. They found that 60% of the molecular clouds had the usual long thin shape, while 40% were soft. The temperature inside the thin clouds was higher than that in the soft ones, which might be due to how old the clouds are.

If a molecule cloud keeps its long shape, it's more likely to break apart and form many stars like the sun. However, if it becomes soft, it may be harder for stars to form. This study shows that having enough heavy elements is important for maintaining the long shape of molecular clouds, which can be crucial for forming planetary systems.

The company plans to use 3D-printed metal homes to survive ocean pressure. Their first small station will be ready this year. It is as big as a small classroom and can hold 3 divers at a depth of 100 meters into the ocean for short trips. Bigger stations will later allow 6 people to live for a month, with bedrooms, kitchens, and labs.

In the 1960s, early submarine labs let people stay for about a month. In 2023, a professor named Joseph Dituri broke the record by living beneath the ocean's surface for 100days. His body changed slightly — like shrinking half an inch — but he stayed healthy. Still, scientists warn long-term living beneath the ocean's surface might harm blood flow, and returning to the surface too fast can be deadly.

Another problem is wildlife. Ocean animals already suffer from warming waters, and building metal homes could damage their habitats. Nancy Knowlton, a marine science professor in the US, said, "Humans have not done enough to protect the ocean. While the UK company claims they want to study and protect sea life, we fear this might cause new issues."

Despite challenges, the company has big dreams beneath the ocean's surface:10 stations worldwide by 2035, and the first "baby" born beneath the waves by 2050. Their leader stresses, "We can't ignore the oceans anymore — protecting them is key to the Earth's future.

Just as our ancestors left the sea long ago, humankind, in my view, might now start a new chapter beneath the waves."

I spoke four languages naturally: German and Hungarian with my parents, Spanish outside home, and later English. My parents survived World War II and taught me their stories of hope through their languages. At school, we learned different subjects in Spanish, German, and English. Though switching languages was easy for me, sometimes, it made me feel different. While friends had one main culture, I balanced many cultures, which made me feel like I belonged nowhere.

Our home traditions stood out. We ate dinner earlier than most Argentine families did. When friends stayed out very late as teenagers, I preferred going home earlier like my family. Music at home, in addition, was different too. Instead of Argentine tango or folk songs, we listened to German classical music and American pop. I connected more to these sounds from my parents' childhoods.

Living with three cultures was hard at times. Even though I was born in Argentina, I didn't always feel completely Argentine. My daily habits, traditions, and even how I thought about things felt more connected to my family's European background. I wished I didn't have to explain why my family did things differently. As I grew up, however, I learned to love my background since it taught me to adapt, understand different views, and feel at home anywhere. If you have multiple cultures, don't see them as an issue. It's special! I have more homes, more traditions, and a wider view of the world. My background is a gift that makes me unique.

China Grand Canal Museum, China

The museum stands as a centre of the collection, display, research, and education surrounding the canal's cultural artifacts. Housing over 10,000 pieces of relics ranging from ancient books, calligraphic works, and paintings to pottery, the museum offers visitors a comprehensive insight into the Grand Canal's evolution from the Spring and Autumn Period to the modern era.

Golden Gate Highlands National Park, South Africa

Nestled in the Maluti Mountains' foothills in the Free State Province, this park is named for the golden shine that bathes its sandstone rocks at sunset. It offers scenic hikes among breathtaking sandstone cliffs (悬崖) and vast reddish grasslands. Spend time in mountains riding a horse and exploring caves to know about the original wildness more.

Prince Edward Island, Canada

The island is renowned for the red-sand beaches, whose ecosystem is rich and varied with beautiful coastal landscapes, rolling green hills, and wonderful forest trails. Plus, the redand-white lighthouses have become popular historical landmarks for the public to visit. The island is small in size, but you'll be surprised by the vigour of fishing villages, small towns, farming communities, and urban centres.

Ngardmau Waterfall, Palau

Located on Babeldaob Island, the waterfall is not only a natural wonder but also a site of cultural significance. It is located in the village of Ngardmau, which is named after the waterfall itself, and can be accessed on foot or by rail, with the latter taking less time to reach. Today, it holds both cultural and historical significance for the place's community.

"We'll be back in a couple of hours," my parents said to me. "OK," I replied uneasily as it was the first time that I had ever been alone at home. I had been looking forward to this for such a long time, but now all of a sudden it didn't seem so enjoyable. As they went out the door, I went to the window to wave them goodbye. They waved back at me, not understanding the fear that was inside me. As they pulled out of the driveway, all the usual safety was removed from the house. Then it all began.

It was just me and the house, facing all of the robbers and bad guys that might come after me because, of course, my parents weren't at home. I quickly ran through the house , turning each light on, so that I could go into each room without the fear of a witch (女巫) emerging from the shadows. Even so, I still felt uneasy in this empty house.

It had only been a few minutes since my parents had left and I thought I had had enough. Then. I decided, "I can watch TV and I'll be fine and have some fun." I turned on the TV and avoided any violent shows. Then, out of the corner of my eye, I saw headlights coming down the road in front of my house. "I'll just check to make sure they don't pull into my driveway," I said.

As the night wore on, I continued to check each car that passed by — just to be safe. Fortunately, there were no more problems and I even had a little fun watching TV. Then, the most terrible thing happened: One of the passing cars pulled in and began speeding down my driveway. As it got closer, I realized that it was an old rickety (摇摇晃晃的) truck, and a person that I had never seen before.

注意：

(1)续写词数应为150个左右；

(2)请按如下格式在答题卡的相应位置作答。

This scene threw a scare into me.

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As I refocused on the truck, I made out the person.

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(1)展览的时间和地点；

(2)展览内容；

(3)邀请的理由。

注意：

(1)写作词数应为80个左右；

(2)请按如下格式在答题卡的相应位置作答。

参考词汇："一带一路"倡议 (the) Belt and Road Initiative

Dear Mike,

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Yours ,

Li Hua

On February 16, 2025 , Shenzhen's Futian District launched 70 Al-powered civil servants, marking a transformative shift in public service delivery. These digital employees(build) on DeepSeek-R1 model with Mixture of Experts and reinforcement learning.

The AI system demonstrates remarkable. ( efficient). It corrects document formatting errors with 95 % accuracy and reduces review time by 90%,.(free) human staff to focus on creative tasks like policy design. Operational costs are ( striking) low: Each AI worker consumes $0. 4 per month in electricity. The total cost will be less than three months' salary foraverage human in the next five years一a breakthrough that allows governments. ( invest) more in education and infrastructure. To ensure safety, Futian introduced China's first Management RulesGovernment AI Assistants, requiring human oversight for important decisions.

So far, the initiative( boost ) public satisfaction from 78% to 96%, showinggreatly technology can make governance more transparent and I trustworthy. Globally, it sparked a $1.3 trillion surge in China's stock market as(investor) gained confidence in AI-driven solutions.

As Justin served a man and got3 with the next one, he noticed an old woman pushing her way through the4 to get to his stand.

"Excuse me, how much is a hot dog?" she asked.

"That5 what you want, ma'am. They range from $3 to $7. Check out the menu and let me know what you want," he replied.

Before walking away, she mumbled (嘟哝), looking at the6. "I's alright. I am just curious how much they cost. I don't want any.

Justin noticed she left and sat alone on a bench across from his stand. She kept looking in his7.Realizing she wanted hot dogs but couldn't8 them, he felt bad, so he quickly collected some hot dogs and brought them to her.

"I must9, ma'am. I was in such a(n)10 that I forgot to tell you that you're the 50th customer today, so you can get some11 hot dogs!" he said. "Please let me know how you like them!"

"I really12 them. Thank you. You put something in them, didn't you? They're different from regular hot dogs." Then she took another13.

Justin smiled and said, "My mom was also a fantastic cook who14 her secret sauces. I learned from her. I'm glad to hear that!" Justin watched her15 eating from a distance, feeling delighted to have helped the old woman.

Eat a healthy, nutritious diet to help your body grow. Good nutrition is essential to reach your height potential, which means your body can grow to its maximum height.For example, fill half your plate with vegetables, 1/4 of your plate with protein, and 1/4 of your plate with carbohydrate. Snack on fruit, vegetables , and low-fat dairy.

Get a good night's sleep every night. During your daily activities, you break down your muscles, and your body needs to repair them to get stronger. Make sure you get proper amounts of sleep..

Exercise 30 minutes daily for healthy bones and muscles. You probably know that exercising every day helps you stay healthy, but it may also help you grow taller. So it's easy for you to include it in your daily life. For instance, play football , take a dance class, go for long walks, or go skating.

Lie down on your back, on an exercise mat, or on the floor. Reach your arms over your head and extend them as far as possible. At the same time , extend your legs as far as they go. Repeat the exercise daily to maintain your results.

A. Pick a sport you enjoy.

B. Stretch to reach your full height.

C. Maintain good posture to help you be your tallest.

D. Build your meals around fresh vegetables, fruit and proteins.

E. You'd better eat an egg every day if you're not allergic to eggs.

F. It'll help your body repair itself and recover your energy levels.

G. But in fact, taking good care of your body during growth may increase your height.

Scientists from the National University of Singapore observed that dolphins were able to acoustically (听觉上) scan objects underwater and pick matching objects visually. This demonstrated that a dolphin's sound echoes emitted off an object contained information about the object's shape. They then recorded dolphin echoes emitted when scanning an object underwater.

Based on their observations, the team built a sonar system that copied a dolphin's sonar. The sonar, which is about 25 cm in width and around the size of a dolphin's head, is designed to emit sharp click sounds similar to a dolphin's echolocation (回声定位). Three transmitters are used to send sounds from different directions. The researchers then processed the sounds from both dolphins and their sonar to visualize what the echoes revealed about the object's shape. To make the most of this new hardware, the team developed a novel processing algorithm (算法) that allowed the sonar to improve the visualization of the echoes. Based on the hypothesis that dolphins use prior information to process their echoes, the researchers included prior information in their algorithm.

The effectiveness of the software was demonstrated when it was able to visualize information from a dolphin's sonar echoes when scanning an object, as well as sonar signals produced by their sonar. A conventional approach to processing both sonar echoes resulted in noisy images. However, the novel processing approach gave better resolution and, therefore , sharper images. The software was also able to generate visualization with a mere three clicks from the sonar, allowing it to be operationally fast.

The new sonar processing method could have potential benefits in underwater commercial or military sonar. For example, it could be used to scan the seabed to search for features that can be used to aid navigation. The sonar's compactness (小巧) also makes it suitable for installation on underwater robots for ocean exploration.