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②We often find ourselves in an endless thought loop (圈). And every so often, we try to stop this endless flow of thoughts by telling ourselves to just stop thinking. But do we or can we ever really stop thinking?

③It depends on your definition (定义) of "thinking", according to Michael Halassa, a researcher at MIT, the US. We basically go through each day in one of the two states—we either realize that we're thinking or we don't. Our brains won't stop thinking completely until we die.

④"The brain never stops thinking in a sense. Most thoughts are actually in the background without us noticing them and there's not really a way to turn these things." Halassa said.

⑤You can compare this to how a computer works. When you aren't using your computer while it's turned on, it is still running operations "in the background". Your computer, much like your brain, is always "thinking", even if you' re not actively using it.

⑥"If you see a familiar face in a crowd and think you know them, you might not be able to come up with how you know them right away,"Halassa said. "But maybe hours later, you'll suddenly remember. That's a result of your brain thinking in the background."

⑦We even make decisions mostly unconsciously or without realizing them. For example, some of this background "thinking" results in what we call a "gut feeling (直觉)". During our brain's decision-making process, sometimes we create a story to explain the decision—sometimes it's accurate (精确的), sometimes it's not.

⑧Even sitting here reading this, thinking about "thinking" is sending messages across a chain of neurons (神经元) in the brain. So if we somehow manage to stop ourselves from "thinking", the brain won't sign off. It will continue to have thoughts—we just won't realize them.

The Venus flytrap is perhaps the most famous killer plant. However, scientists have only recently started to understand how it hunts (猎取) and eats. After years of study, plant scientist Alexander Volkov believes he now knows the Venus flytrap's secret. "This," says Volkov, "is an electrical plant."

There are three small hairs along each of the Venus flytrap's two leaves. When an insect touches a hair, it creates an electrical signal (信号) in the leaf. The insect can continue feeding—for now. But if it touches another hair within 20 seconds, the leaf traps suddenly shut. This allows the plant to tell the difference between a drop of water, for example, and a moving insect.

Once trapped, an insect has little chance of staying alive. Instead of nectar, the Venus flytrap now releases (释放) a different liquid—one that slowly eats away at the insect. Ten days later, almost nothing is left. The plant's leaves open again, and the Venus flytrap is ready for its next meal.

Pi Day is celebrated around the world on March 14, since how we write this date, 3/14, looks just like the number pi.

For some people, the appeal (吸引力) of Pi Day goes far beyond math and science. Pi shows up throughout popular culture. You can see it in movies, comics, music and more works that show creativity. "In modern movies, any time the filmmaker wants to evoke (唤起) a sense of mystery, often the symbol pi is used," said David Blatner, a Jewish-American writer of The Joy of Pi.

People also love trying to memorize the digits (数字) of pi and competing against others to see who can remember the most. Many teachers hold class contests to see how many numbers their students can memorize. The Guinness World Record for reciting (背诵) the most digits of pi is held by Lyu Chao of China, who successfully recited pi out to nearly 67, 890 decimal places.

Above all, Pi Day is about having fun with the number. People celebrate Pi Day by eating or throwing pie and with fun pi-related games and activities. In 2016, Princeton, New Jersey, held a birthday party for Albert Einstein whose birthday also falls on March 14. There was also a "Walk a Pi Event" where people walked 3.14 miles together. Just like the number itself, the possibilities for Pi Day are truly endless.

A 15-year-old schoolgirl Catherine Cook and her brother David, 16, wanted more than this. They thought, "We don't really know our classmates from just a picture, so why not have a yearbook online? You could learn about people's musical tastes, the movies they like and so on." With their hard work, a website named my Yearbook was set up, which soon became popular among schoolmates.

On the website, members can connect with each other by sharing movies, music, photos and study guides. Some students feel that they don't fit in at school, but can make friends more easily online. My Yearbook users can also make virtual (虚拟的) "Lunch Money" by completing activities on the website. They then give it away to charities (慈善机构) in the my Yearbook "causes" programme, which has sent 22,000 books to Africa, and bought 20,000 kilos of rice for people without enough food.

Running the website did not stop Catherine and David from completing their schoolwork successfully. Now, they go on to university, but still manage to put in 50 hours a week to develop the website.

My name is Lily, and I am a student in the (nine) grade.

When I first entered middle school, I (be) nervous and didn't know what to expect. However, as time went by, I started to get used to the new environment and make new (friend).

One of the (big) challenges for me was learning how to study well. In middle school, we have more subjects to learn and more homework to do, in primary school, I learned to make study plan and break down my tasks into smaller parts. So I can finish my homework time and still have time to do things like reading books and playing sports.

Another challenge for me was public speaking. I used to be very shy and afraid of (make) mistakes. However, my English teacher encouraged me and gave me some (use) tips. With her help, I became more confident and improved my speaking. Now, I feel (complete) relaxed when speaking in class.

I learned this lesson from an1 many years ago. I took the head coaching job at a school in Georgia. It was a small school with a2 football program.

It was a tradition for the school's old team to play3 the new team at the end of spring practice. The old team had no coach, and they didn't even practice to4 the game. As the coach of the new team, I was5 because I knew we were going to win, but we lost. I couldn't6 I had got into such a situation. Thinking about it7, I came to realize I had to change my attitude (态度) towards their8.

I began to help them build confidence. Most9, I started to treat them like winners. That summer, when the other teams enjoyed their vacation, we10 hard every day, passing and kicking the football.

Six months after our failure, we finally faced the No.1 team on the field. I felt it would be a11 for us even though we lost the game. But that was not what happened. My team beat the12 in Georgia!

From the experience, I learned how the attitude of the leader can13 the members of a team. Instead of seeing my team as14, I encouraged them. I helped them see themselves differently, and they built themselves into winners.

Winners are15, not born! When you have a dream, go for it!

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1. 紧扣主题、语言流畅、书写规范、卷面整洁，词数不少于80个；

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The Beauty Around Us

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Time is really valuable. We sometimes don't pay much attention to it, but we usually feel like there's always not enough time.

First, get to know how to use our time.

Take notes about how we use our time. Once we know where our time is used, we can plan our time better.

We all have the time we need. We just have to decide what's more important. Sit down and write a list of the most important things we want to spend time on in our life. This will help us make better choices.

Third, make changes and set limits (限制).

As soon as we know how we use our time and what we want to focus on, we can start to make changes and set limits. And when we already feel too busy, say no to new tasks.

Finally, learn to enjoy the present moment with a thankful heart.

Taking the time to value the small things in life, like a lovely sunny afternoon or a nice cup of coffee. Spending time on things we like, such as reading, listening to music, or walking in nature. Every hour we are experiencing is a wonderful gift.

A. Learn to enjoy the moment.

B. Second, find out what matters most.

C. We should spend our time with our family.

D. In fact, there are some useful suggestions to help us.

E. After a week or two, we can find out where our time goes.

F. The more time we spend on study, the better grades we will get.

G. Give up less important things and make time for more important ones.

Alibaba says that's because of one of its inventions, called the City Brain. The City Brain started in 2016. It uses AI to collect information across Hangzhou, such as GPS data on the locations of cars and buses. The City Brain deals with the information in real time as it gets more than 1,000 road signals around the city.

After testing, the City Brain can be working. For example, it has shortened commutes (缩短通勤时间) and also helped fire fighters to get to the scene of emergencies (紧急情况)   soon. The City Brain is also good for some drivers. Ye Bojie, who works for Didi, said it once took him 40 minutes to drive 3 kilometers, but it is much better now.

The City Brain has been upgraded from Version (版本) 1.0 to Version 3.0. Now, in the smart parking lot scene, it further supports functions such as private and public parking space sharing.

On September 25,2024, the third Global Digital Trade Expo opened in Hangzhou, Zhejiang Province. A union (联盟) was set up then. It includes cities such as Hangzhou, Nanjing, Hefei, Jinan, Ningbo, Baoding, Wuhu, Dezhou, Guangyuan and Zhangjiakou. With the City Brain, people in those cities will probably live in a more convenient way.

When he was 18, Isaac went to study at Cambridge University. He was very interested in physics and maths. But in 1665, the Great Plague, a terrible disease, spread in England, and Cambridge University had to close down. Isaac had to return to the farm. However, he continued studying and testing new things at home.

One day when he was drinking a cup of tea in the garden, he saw an apple fall from a tree. He thought, "Why do apples fall down instead of going up?" From this, he formed the theory of gravity (万有引力). Gravity is an invisible force. Nobody can see it. But it pulls objects towards the Earth and keeps the planets moving around the Sun. Isaac made another important discovery. He called it "Three Laws of Motion" (三大运动定律). These laws explain how objects move. Isaac's laws are still used today for sending rockets into space.

Isaac Newton died in 1727. He was buried along with English kings and queens in Westminster Abbey in London. He was one of the greatest scientists who has ever lived.