Five years ago, I left my job to work on a ship. After working as a junior doctor, I was willing to take the risk.1 for adventure, I boarded a ship in Singapore with 2, 000 passengers and crew. To my2 , the hospital was well equipped, with an X﹣ray machine and a blood analyzer.

As a doctor, I was3 for the 600 crew. Far from4 seasickness and sunburn, I had to deal with other diseases. The ship's medical centre was5 a floating emergency room, and we didn't have a team of specialists on hand for a second6 . With long and unpredictable hours, it required mental7 .

Many of the passengers were elderly. Heart attacks don't8 geography and emergency evacuations （疏散）were difficult to arrange. I recall one such patient, who was taken off the ship halfway through the Panama Canal. After a9 ride in an old ambulance, I was relieved that the patient10 long enough to arrive at the hospital in Panama City.11 , there were several unexpected benefits to the job. I regularly12 the passenger facilities. On rare days off, I13 as a tour guide on trips ashore.

Now, I understand being a ship doctor is not a job﹣it's a way of14 . One year at sea became two. I lost my career ambitions,15 I redefined happiness in my life.

Omar Vazquez grew up in poverty on Mexico's Yucatan peninsula. He watched his single mother struggle to put food on the table, and today the memory inspires him to help those in need. When an invasive (入侵的) seaweed called sargassum showed up on Mexico's Caribbean beaches, Omar looked past the matter of it all and saw an opportunity to help others.

Sargassum is not dangerous, but it has an unpleasant smell and can become so thick that it keeps people from entering the water. Mexico has experienced record-setting amounts of the seaweed in recent years, and it has made its way to Florida's beaches as well. Experts say there could be as much as 100 tons of sargassum blocking Mexican shorelines in 2023.

With tourism dollars at risk, officials and locals alike were eager to remove the seaweed, but only Omar saw its true potential. The professional gardener organized a beach cleanup that provided jobs for about 300 local families, but he knew there was more to do. Since people's attitude towards the seaweed reminded him of his own life experiences, he decided to become an agent (推动者) for change.

When sargassum started arriving, everyone was complaining. "I wanted to make something good out of something everyone saw as bad," Omar explained.

In 2018, Omar found a way to turn sargassum into building blocks that he calls Sargablock. He creates these blocks by mixing 40% sargassum with other materials like clay, then putting them in a block-forming machine and baking them in the sun for days. The end result is an organic, sustainable, and ecologically friendly building material that experts say could last for 120 years.

To date, Omar's company, Bluegreen Mexico, has used 700 tons of sargassum to build low-income housing for those in need. Omar said he would take on more projects, and donate more houses to single mothers like his own mom.

The process of publishing articles in Teens {#blank#}1{#/blank#} （be） very meaningful to me over the last year. It provides me with the opportunity to practice writing, {#blank#}2{#/blank#} （broad） my horizons and enrich my comprehensive practice record （综合实践记录）. I also met many excellent friends, {#blank#}3{#/blank#} views on different things have given me a lot of {#blank#}4{#/blank#} （inspire）.

 {#blank#}5{#/blank#} impressed me most was an interview I did for Teens about what my classmates thought about the school's monitoring of students'emotions. I had a very {#blank#}6{#/blank#} （heat） discussion with my friend. His insightful （有洞见的） and logical ideas inspired me. It is precisely （正是） because of this interview {#blank#}7{#/blank#} I started to pay more attention to logic and look at things from many angles in my subsequent（之后的） writing for Teens. What's more, I also boosted my skills in writing argumentative essays in the Chinese exam. I am very grateful to Teens {#blank#}8{#/blank#} giving me this chance to improve {#blank#}9{#/blank#} （I） in many aspects!

In the future, I will keep writing and working hard. I believe that Teens has {#blank#}10{#/blank#} bright future.

Some people still live in their hometown. However, others may only visit {#blank#}1{#/blank#}once or twice a year. Millions of Chinese leave the countryside {#blank#}2{#/blank#}(search) for work in the cities. Among these is Hua Xing. He {#blank#}3{#/blank#}(live) in Wenzhou for the last 13 years. With a hard job {#blank#}4{#/blank#}a factory, he seldom visits his hometown. "I haven't been back for three years. It's {#blank#}5{#/blank#}(shame)," he says. {#blank#}6{#/blank#} (develop) have been good in Hua Xing's hometown since 2002. For example, new roads {#blank#}7{#/blank#}(appear). A new school {#blank#}8{#/blank#}(build). However, some things will never change in his hometown. The big old tree is still beside the playground. Children in his time {#blank#}9{#/blank#}(usual) liked to play together under it. It was {#blank#}10{#/blank#}a happy childhood.  

Have you ever had a day when everything seemed to go wrong, and nothing seemed to go right? Not too long ago I was having one of those days. I was discouraged, weary, and 1 sad. My focus was on me, me, me. After all, no one else was experiencing the same 2 as I was. 

I expressed my depressed 3 to my mother. She didn't offer any comfort; 4 . she said, "I heard Jamie was having a difficult day too. Why don't you make her some 5 and we'll take them to her this afternoon?"

I didn't really intend to, but I was bound to because I was 6 to go back to my other problems just yet. I made some and 7 them on a little plate. Then I made a card with a sunflower on it and wrote a small note of empathy. 

That afternoon we 8 my friend's house. I went to the door and 9 the bell. Soon Jamie came to the door and looked at me in 10 for the unexpected visit. Before she could say anything, I 11 , "I heard you were having a hard day and decided to bring you something. I hope your day goes better. " The look that 12 Jamie's face was one that I could never put into words. It was as if a darkened sky was suddenly 13 with the golden rays of the sun; it was as if in that small act, her day was brightened. 

I got back into the car and for some 14 reason, I felt a lot better myself somehow. That day I experienced the truth that James Barrie attempted to describe: "The guys who bring sunshine to the lives of others cannot 15 it from themselves. "

I was living in Sao Paulo, Brazil. It is a1 city, with more people living in it than in my whole country. We rented a flat in a guarded community, but there was a favela (棚户区) quite 2 .

For several months I didn't have a car, so three times a week, I took buses to go to the city centre. During these 3 , I would ride with the people who took the same bus from the favela to go to work. When I got on the bus, all the seats were already 4 . But when people saw that my bag was heavy, they offered to hold it on their legs to make me feel lighter5 . At first, I was 6 . Then I realized that these people had absolutely no 7 to steal from me: they only wanted to 8 .

Once, on my way back, I had to 9 for a long time at a bus stop. I was alone, except for a woman who was 10 very poor. She carried a small paper bag of popcorn and nothing else.

While we were waiting she walked over and 11 me some popcorn. I 12 her, but didn't want to help myself to it. She then repeatedly insisted that I take from what was clearly her only food.

That was the first time I had thought about how people who have almost nothing are sometimes able to 13 the little they have more "14 "than those who own a lot. I wonder if it's true that the more you have, the bigger the difficulty to share anything with others. I was so moved by that woman's simple generosity that day. I clearly 15 more than she did, but she naturally and joyfully shared what little she had with me.