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I came across an image recently of a distance runner with a message that told readers to persevere（坚持） at all costs. It reminded me of a conversation I had. My colleague' s teaching assistant was asking for my advice. He wanted to know when to quit something. He described how he' d been playing an online game with people for some time. It hadn' t been very fun lately, but there was always that small chance of a reward （upgraded equipment, etc）. 

I inquired further about his relationship with the players and his gains from the game. I then discussed the sunk cost dilemma, a concept I studied in advanced school due to its personal impact. In high school, I applied to five universities, planning to choose the cheapest one. SUU offered the best scholarship, and after paying a $100 commitment fee, I heard back from another school with an even better scholarship. Despite the new offer, I stayed committed to SUU, believing that switching schools, even if it meant acknowledging the " wasted" $ 100, would have been the wiser financial choice. 

A rational （理性的） decision maker is not ruled by past investments, but weighs future outcomes. I didn' t focus on future outcomes when weighing colleges. I focused on the money I sunk into SUU. Rather than evaluating future career options, I focused on the fact that I' d already taken elementary education courses. 

I' m not the only one that' s fallen prey to this. I wear clothes I dislike simply because I spent money on them （and that money won' t come back）. Unhealthy relationships last be- cause of the invested time （leading to more unhappy years）. However, time, effort, or money that you' ve invested doesn' t mean you should continue. Society often stresses perseverance— never quit, never give up, don' t waste. However, only you know your right path. Walking away can be the toughest choice. You might realize a path you' re on is no longer the right one or never was. 

Plastic is everywhere, from the Arctic ice to vital organs in the human body. In fact, previous estimates suggest that the average person swallows a credit card-worth of microscopic plastic particles（颗粒） every week. But new research shows that this could actually be an understatement. 

Microplastics are plastics smaller than 5 millimeters, found in industrial waste, beauty products, and formed during the degradation of larger plastic pieces. Over time, they break down into even smaller nanoplastics. These tiny particles can pass through our intestines and lungs into our bloodstreams, reaching vital organs like the heart and brain. 

While the idea of eating plastic is unsettling in itself, the major concern here is that these plastic particles contain chemicals that can interrupt our body' s natural release of hormones, potentially increasing our risk of reproductive disorders and certain cancers. They can also carry toxins（毒素） on their surface like heavy metals. 

In the past, researchers have shown bottled water can contain tens of thousands of identifiable plastic fragments in a single container. However, until recently, only the larger microplastics were detectable with available measuring tools, leaving the area of nanoplastics largely a mystery. 

Using Raman microscopy （显微镜学）， capable of detecting particles down to the size of a flu virus, the team measured an average of 240, 000 particles of plastic per liter of bottled water, 90 percent of which were nanoplastics, a revelation 10 to 100 times larger than previous estimates. 

These plastics likely originate from the bottle material, filters used to " purify" the water, and the source water itself. " It is not totally unexpected to find so much of this stuff, " the study' s lead author, Columbia graduate student Naixin Qian, said in a statement. His team hopes to expand their research into tap water and other water sources to better inform our exposure to these potentially dangerous particles. " The idea is that the smaller things get, the more of them I reveal, " he added. 

After moving to the United States in 1901, 19-year-old Bob Douglas found a job as a doorman in New York. Later, a co-worker took him to visit a basketball court, and he was amazed by the athletic prowess on display. At that moment, Douglas, who had enjoyed playing sports as a child, was determined to create a basketball team and provide greater opportunities for New York City' s Black athletes. 

He needed to find a place for his team to play. When asking a ballroom owner, William Roach, for permission to use one of the dance floors, Douglas was replied with " you guys will break up my place" . After promising to take on all the financial risk, he finally persuaded Roach to change his mind and called the team " Rens" . 

However, their ballroom had fewer seats and attracted fewer people than others, so Douglas had to pack the house to generate profits and keep his team alive. They traveled the country playing any opponent that would agree to schedule them, during which they repeatedly faced discrimination and unfair treatment and the players were often banned from hotels and restaurants. 

No matter the obstacle, the Rens just kept strict practicing. They helped change the game of basketball by focusing on quick passing, which let the players move faster, play a more fluid（流畅） game and keep winning. In 1925, the Rens shocked the world by defeating the Original Celtics, the most dominant team of their day. During the 1932-33 season, the team won 88 straight games, a professional basketball record that remains unbroken. 

Unfortunately, the Rens disbanded （解散） in 1949. But in time, they were recognized for the important role they played in advancing Black athletes in basketball, ensuring that although the Rens aren' t a household name, their story will never be forgotten. 

At Ynez Library, we are champions of curiosity. At its core, our mission for nearly four centuries has been to advance the learning, research, and pursuit of truth. Our efforts are motivated and powered by working collaboratively, embracing diverse perspectives, championing access, aiming for the extraordinary, and always leading with curiosity. 

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A. Italy. B. Switzerland. C. Germany. 

A. Start a new job. B. Build up his vocabulary. C. Finish a practice book. 

A. She looks so pretty. B. She is a little lazy. C. She is too nervous. 

A. In a restaurant. B. On the plane. C. In the classroom. 

I worked at a local station of the Berlin fire department. We got an alert (警报) around 8:25pm that Friday and rushed to the fire engine, where the printout from the dispatcher (调度员) said there was a nine-year-old boy locked in a safe.

I asked myself: if it were a safe, would it be airtight? I was aware that it might already be too late by the time we arrived. I had to plan for a bad outcome. On the other hand, if we were in time, how long would it take us to open the safe? I knew it would be an incredibly difficult task. It's what safes are designed for—not to be opened.

It took less than five minutes to reach the property. When I saw a woman crying on the street,

I knew the situation was serious. She was the boy's mother and she led us into the basement. She told us the boy was alive and we started talking to him; he was very calm. We asked how it had happened: during a game of hide and seek with his five-year-old brother, he had thought the safe would be a good place to hide.

The boy's parents had got the house from his mother's father. The unlocked safe had been there when they moved in and was in an area they didn't use much. The boy's little brother had shut the safe, then, when he couldn't open it again. The only person who knew the combination was the boy's late grandfather.

From the outset, the biggest priority was getting oxygen to the boy. We got oxygen from the hospital. The boy said that he could feel a thin stream of air. I asked his parents if anyone had opened the safe before and they said no. So we had to guess a six-digit code (密码). We started typing them in—but we had to wait 10 minutes between each attempt before we could try again. So quickly we tried them all. No luck.

注意：

1.续写词数应为150左右;

2. 请按如下格式在答题卷的相应位置作答。

We were fully prepared at this point to open the safe by force, starting with a drill.

Then, just as we started to make the first cut, my workmate typed in the correct code.

1. 专刊的意义；

2. 专刊的内容；

3. 寄予的希望。

注意：

1.写作词数应为80左右；

2. 请按如下格式在答题卷的相应位置作答。

Dear Readers,

Warm regards,

Li Hua

Editor-in-chief

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

What did you have for dinner Tuesday night of last week? If someone  (ask) you that question Wednesday morning, you would  (possible) have had no problem recalling what you had for dinner the night before.

But as days pass, the memories of all the other meals you  (eat) since then start to interfere (干扰) with your memory of that one particular meal. This is a good example of psychologists call the interference theory of forgetting. Forgetting is the result of  (vary) memories interfering with one another. The more similar two or more events are  one another, the more likely interference will occur.

Getting rid of interference altogether is impossible, but there are a few things you can do to minimize its effects. One of the best things you can do is rehearse (排练) new information in order to better commit it to memory. In fact, many experts recommend overlearning important information,  involves rehearsing the material over and over again until it can be reproduced perfectly with no errors. Another strategy for fighting interference is to switch up your routine and avoid  (study) similar material back to back. Sleep also plays an essential role in memory  (form). Sleeping after you learn something new is  efficient way to turn new memories into lasting ones.

阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。

I used to stutter (口吃) quite badly. I felt very 1  , like I was less of a human being.

I didn't have any 2 when I left special school. So I got a job as a trainee hotel porter. I enjoyed it because I was meeting new people and earning my own 3 . I felt like a proper adult. But the other men 4 me mentally because of my disability. They'd imitate (模仿) me 5 because of my speech impediment (障碍). I got very down. I was 6 inside.

The stepping stone to self-belief for me was 7 I got help from KeyRing—an organization which helps disabled people to live 8 . I couldn't write very well, but I could 9 that. Apps on computers meant I could dictate (口授) my emails. I got the government 10 for disabled people in work. It paid for me to help with paperwork two mornings a week.

11  I heard about a job going at the human rights charity CHANGE. I got an 12  that got me the job of international project consultant. I travel all over the world to 13  professionals to work better with people with learning disabilities. This builds my 14  . I lost my stutter in the end.

My learning disability was a bit of me, but it doesn't 15 me. It's just a label people put on me. It hasn't stopped me having a life.

The art of learning how to think

Learning how to think is really the whole point of going to university because it is one of the few periods in your life when you get time to do it.

Like any skill, successful thinking takes practice. The more time you spend thinking and the more ideas you come up with, the more likely it is that some of them will be good ones.  Your thinking will never improve if it consists entirely of thinking how much of a failure you are.

 Geniuses generally come up with their brilliant innovations by thinking about a subject in lots of different ways and establishing connections between apparently different ideas. On the other hand, there are times when you need to know what you are supposed to be thinking about and why, and to stay reasonably focused.

If you are having trouble thinking, it may be because you lack another skill that would make it easier. It could be that you don't have a wide enough vocabulary to put your thoughts into words. If you share a house with violinists and pianists, you may have trouble hearing yourself think.

One way to sharpen this skill is to think critically about what other people are thinking. Thinking is not always something that needs to be done alone.  So, if your housemates ever abandon their instruments, engage them in conversation, look for holes in their arguments,and explain your own.

If you get really good at thinking while at university, you may be able to think of a way to carry that on. 

A. Proper thinking is about creating an argument.

B. It enables us to become more independent thinkers.

C. If they're all rubbish, try not to keep thinking about it.

D. And thus it saves you actually doing anything once you leave.

E. You may also be in the wrong environment for productive thought.

F. Having a one-track mind won't improve your power of thinking anyway.

G. In fact, communicating your thoughts can help to develop and clarify them.

In the joyful summer Chadalavada spent with Jayasree, his grandmother in 2018, the pair watched endless movies. Late one evening, Jayasree, who had recently been diagnosed (诊断) with Alzheimer's, got up in her nightdress and went to make tea at her home in India. After she returned to her bedroom, Chadalavada went into the kitchen to find that his grandmother had left the gas on!

Chadalavada decided to invent a wearable device to help people like his grandmother. Now aged 17, Chadalavada is ready to start making the Alpha Monitor. The device, which can be worn as an armband, sets off an alarm when the wearer with Alzheimer's starts to move and warns a caregiver if the patient falls or wanders off.

Most similar devices run on Wi-Fi or Bluetooth, so when a person moves out of their frequencies' limited range the connection is lost and with it the monitoring. But the Alpha Monitor can detect a person more than a mile away in cities and three miles in the countryside thanks to the long-range technology, known as LoRa, it uses.

Teaching himself with YouTube videos about robotics and electronics, Chadalavada has developed several prototypes (模型). To understand the needs of people with Alzheimer's, he spent time in a day centre run by the Alzheimer's and Related Disorders Society of India. There, the cofounder told him that the device "had to be something light that can be worn on any part of the body". She says: "Many patients don't like having to wear a watch and they take it off."

In March, when Chadalavada's school exams are over, he will put the finishing touches to the monitor, with the aim of getting the device ready for market by September. He is confident that it should be sold at an affordable price for most people.

Chadalavada hopes to study robotics at a university abroad. His aim is simple: "I want to create products to help people in India for the whole world."