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 light from the campfire brightened the darkness, but it could not prevent the damp cold of Dennis's Swamp (沼泽地) creeping into their bones. It was a strange place. Martin and Tom wished that they had not accepted Jack'sdare. They liked camping, but not near this swamp.

"So," Martin asked as they sat watching the hot coals. "How did this place get its name?"

"Are you sure you want to hear it? It's a scary story," warned Jack.

"Of course!" cried out Tom. "If there were anything to be scared of, you wouldn't have chosen this place!"

"Ok, but don't say I didn't warn you," said Jack, and he began this tale.

"Way back in time, a man called Dennis tried to start a farm here. He built that cottage over there to live in. In those days, the area looked quite different — it was covered with tall trees and the swamp was a crystal-clear river. After three hard years, Dennis had cleared several fields and planted crops. He was so proud of his success that he refused to listen to advice.

"‘You are clearing too much land,' warned one old man. ‘The land is a living thing. It will hit back at you if you abuse it. '"

"‘Silly fool,' said Dennis to himself. ‘If I clear more land, I can grow more crops. I'll become wealthier. He's just jealous!'"

"Dennis continued to chop down trees. Small animals that relied on them for food and shelter were destroyed. He was so eager to expand his farm that he did not notice the river flowing slowly towards his door. He did not notice salt seeping to the surface of the land. He did not notice swamp plants choking all the native plants."

"What happened?" Martin asked. It was growing colder. He trembled, twisting his body closer to the fire.

"The land hit back — just as the old man warned," Jack shrugged. "Dennis disappeared. Old folks around here believe that swamp plants moved up from the river and dragged him underwater. His body was never found."

"What a stupid story," laughed Tom. "Plants can't …" Before he had finished speaking, he screamed and fainted (晕倒). The other two boys jumped up with fright, staring at Tom. Suddenly, they burst out laughing. Some green swamp ivy (常春藤) had covered Tom's face. It was a while before Tom could appreciate the joke.

Over the past 38 years, Mr. Wang has pretended to be someone else many times, and has even learn ed to 1 different dialects (方言), leading to him being described as an "Oscar-winning actor".

The 60-year-old is not an actor, but a 2 However, he is more devoted to his "3 " than any real actor. In the 1990s, a group of thieves often sold stolen goods with the help of some beggars. To look into the 4 , Wang disguised (伪装) himself and 5 the beggars.

Dirty clothes and old shoes gave him the 6 of a real beggar and his convincing dialect soon won him the 7 of the beggars. "I often 8 them to drink alcohol. Once they were 9 they began to talk a lot," Wang said. "I'd then 10 myself to use the toilet, 11 what the beggars said, and send the 12 to my teammates."

Wang, who is often in 13 situations, is also a judo (柔道) master. "As long as I get close enough, no criminal(罪犯)can 14 from me," he said. Wang's 15 won him several honors including a National May Day Labor Medal and 11 Citations of Merit. Paris. 

We met Bailey 5 yeas ago. He was a standard poodle (髦毛小狗) born on Valentine's day in 2020, and came to us in a small blue box. His previous owner posted the news online and we adopted him. Our only request was that he behave calmly and be able to put up with the pushing and hugging of our eight-year-old daughter and six-year-old son. 

We were a sweet family: me, my husband, our children Angela and Tony. But for years. I'd felt that we wouldn't be truly whole if we didn't have a dog. Also, my husband worked for a commercial company and traveled around 200 days a year. and I knew that having a large animal sleeping by the door made me feel safer. 

The last piece of our purzle fell into place when we opened the box. With his dark hair and smart eyes, Bailey was beautiful. He was so small that he could fit in the palm of my hand, his big paws (爪子) resting at his sides. He was a little scared, too. As I pulled him close, I felt his heart racing, and 1 wondered if we had done the right thing by taking him away from his mother. But it was too late. Angela and Tony were already arguing about who would carry him and who had the right to bathe him. 

Over the following months, we spent countless hours watching Bailey play with his toys or roll around on the living room floor. Like most poodles, he was smart. He quickly mastered house-training and never chewed (咀) on our furniture or shoes. He considered himself one of us. 

One night we were sleeping in the bedroom when I heard some strange noise. {#blank#}1{#/blank#}

At that time, Bailey ran towards me. {#blank#}2{#/blank#}

A. I thought it was Bailey running and hitting something, so I kept lying in the bed and made an attempt to fall asleep again. However, the noise became louder and louder, which had already annoyed me. Quickly l got up from my bed. I opened the door and found Bailey running around the living room, trying to let all the things fall down. These abnormal behaviors really made me confused and a little afraid.

B. He firmly grabbed my trousers and pulled me to the kitchen. As I approached the kitchen could obviously smell a strong burning smell and immediately knew what had happened. When¹ aw the fierce fire in the kitchen, I dashed into my children's room like an arrow(前), waking them up at my maximum voice. Rushing out of the house together with my family. I called 911 and asked our neighbors for help at the same time. Fortunately both my family and my house were saved Thanks to our smart Bailey, we did escape from death.

C. Angela and Tony completed the delicious breakfast and they could not wait to bring it to me who slept in the room. Their father praised their hard-earned work with his thumb up, informing them that I was sleeping on the second floor. To my surprise, their hand-made food was so delicious that l would never forget it. Obviously. what they had done for me would be rooted in memory.

D. I nodded with a smile and encouraged the children to get started. Quickly. Angela volunteered to get the big box of com and prepared to make popcorn. At the same time, Tony. my smart boy. went to buy some paper bags. I ran to Bailey's home to invite him. Not surprisingly. Bailey was amazed at this great project and couldn't wait to come. To our delight, the popcorn they made looked great and tasted delicious. Finally. they packed the sweet popcorn in the paper bags together. Laughter and happiness filled this house.

Humans act with purpose, but much is still unknown about how we become purposeful agents — that is, how we develop the ability to willfully make things happen. In a recent study to explore agency's mysterious roots, we tried to catch infants (婴儿) in the act of discovering their own agency, thereby revealing the process of agency formation.

Researchers place a baby into a cradle with a mobile suspended above. Then a scientist ties one end of a string to the mobile and the other to the infant's foot. Now if the baby moves, the toy will, too. By observing babies in this setup, scientists can watch as the infants learn and recall a simple cause-and-effect interaction: kick a foot and the mobile moves.

As predicted by the researchers, infants kicked significantly more when their foot was tethered (拴住) to the mobile than when it was not. However, when an experimenter pulled the string to make the mobile move instead, infants moved less than when the mobile was at rest. Furthermore, when we freed the babies' foot from the mobile, they kept on kicking at higher rate to make the toy respond — and were visibly frustrated when that did not happen.

Our observations also pointed to a notable pattern: The babies' initial movements consisted of twisting and pushing without clear direction. But once tethered to the mobile, the more intensely they moved, the more their attention was drawn to the effect their kicking had on it. At some point, the infants must have figured out that they had agency, thus the aimless movements became intentional action — a highly coordinated exchange between the tethered infant and the mobile.

The baby-mobile study emphasizes how understanding the relationship between an organism and its environment is essential to uncovering the origins of directed behavior. The experience of agency emerges only when an organism senses it is coupled to its environment. In this way of thinking, the interaction and relationship between the two are crucial for purpose to arise.

It was very late and everyone had left the cafe except an old man who sat in the shadow the leaves of the tree made against the electric light. In the day time the street was dusty,but at night the dew settled the dust and the old man liked to sit late because he was deaf and now at night it was quiet and he felt the difference,The two waiters inside the cafe knew that the old man was a little drunk,and while he was a good client they knew that if he became too drunk he would leave without paying,so they kept watch on him. 

"Last week he tried to commit suicide,"one waiter said. 

"Why?"

"He was in despair. "

"What about?"

 "Nothing. "

"How do you know it was nothing?" 

"He has plenty of money. "

They sat together at a table that was close against the wall near the door of the cafe and looked at the terrace(露台)where the tables were ll empty except where the old man sat in the shadow of the leaves of the tree that moved slightly in the wind. 

"The guard will pick him up,"one waiter said. 

"What does it matter if he gets what he's after?"

"He had better get off the street now. The guard will get him. They went by five minutes ago. "

The old man sitting in the shadow tapped his saucer with his glass. The younger waiter went over to him. 

"What do you want?"

The old man looked at him. "Another brandy,"he said. 

"You'll be drunk,"the waiter said. The old man looked at him. The waiter went away. 

"He'll stay all night,"he said to his colleague. "I'm sleepy now. I never get into bed before three o'clock. He should have killed himself last week. "

The younger waiter took the brandy bottle and marched out to the old man's table. 

"You should have killed yourself last week,"he said to the deaf man. The old man motioned with his finger. "A little more,"he said. The waiter poured on into the glass. "Thank you,"the old man said. The waiter took the bottle back inside the cafe. He sat down at the table with his colleague again.