相关试卷

Fire ants(蚁） dig tunnels efficiently by only a small percentage of the group doing most of the work. Free-loaders just sit around while their hard-working colleagues get things done. But might freeloaders actually be necessary for society to function efficiently? The answer could be yes.

Fire ants are highly social organisms. So, Goldman, a physicist at Georgia Tech, and his colleagues wanted to know how individual ants knew what to do without a central leader issuing orders. To find out, Goldman's team labeled individual fire ants with paint and then watched them dig their narrow tunnels —barely wide enough for two workers. Turns out, just 30 percent of the ants did 70 percent of the labor. "I was surprised that we ended up with so few workers actually doing the work at any one time." A quarter of the ants never even entered the tunnel. Others crawled inside, but left without digging single grain of dirt. These idling behaviors ensured the tunnels did not get clogged with insect traffic, which would make the construction process stop.

And when the scientists removed the five hardest working ants from the colony, others immediately jumped in to compensate (补偿) — with no reduction in the group's productivity. It seems that it doesn't matter which ants are working or freeloading at a given time, as long as there is some division of labor to keep the tunnels flowing smoothly. The findings are in the journal Science.

The study could have implications for robotics. Imagine groups of robots sent to search rubble (碎石) for disaster survivors. Or nanobots (纳米机器人) coursing through our bodies to diagnose illness and deliver targeted medical treatment. Such robot groups will need to avoid getting jammed up in tight spaces. It might be necessary to program them so some just sit back and watch their comrades work.

We were 3000 miles away from home on a Volunteerism Road Trip. Our funds were running low, so we had two goals: to try out our new "Smile!" signs and see how much joy we could spread and to raise $80, enough for gas to Portland.

I nervously raised our signs and shouted "Hi there!" to a young couple. They read my sign and broke into smiles. Before long, our signs were wildly popular. Strangers took photos with us and asked us about our signs. Some even asked if they could have a "Smile!" sign to carry around. We posed for pictures and sang with street performers. We got so wrapped up in our "Smile!" project that we forgot the other goal. Before we knew it, the sun was setting.

We sat down to think about how we'd raise the money we needed. A blind man had just finished playing the guitar. He was packing up when a passing crowd kicked over his coin jar. Coins scattered(四散）around and he felt his way to collect them. We rushed to help him, but before we cold get there, another man "stole" our good deed.

Once the musician had his money returned, we went to meet the "thief". "We just wanted to compliment you on your good deed," I said.

He smiled and asked about our signs. After learning about our road trip, he said sincerely," I'd like to contribute. It'll make me feel like I'm part of this adventure." Then this complete stranger opened his wallet and handed us four twenty-dollar bills, exactly what we had intended to raise that day.

Several years later, this man, whose name is Jared, went on his own road trip. He visited our city and volunteered with the non-profit organization we co-founded. So often we never get to see the ripple effect (连锁反应）of our kindness. But we are so glad he did.

Title: The blue 

The handiwork(手工) class was over. Karl was delighted that he had created a satisfying work. So he walked to the back of the classroom to put his work away carefully. There, lying on the floor beside the classroom bookcase, was a golden ticket! Karl picked it up. His heart beat faster when he saw that the name line was blank(空白的). He couldn't believe his luck!

The boys and girls in Karl's class could earn golden tickets by doing well in their study or by being extra helpful or kind. Once a week their teacher drew the tickets out of a box on her desk and let the winner choose a prize.

Today was the golden ticket drawing, and here was another ticket, just for him! Karl looked around. No one else was near the ticket. All his classmates were at their desks, laughing and talking with each other. Miss Evans was engaged in grading the papers collected earlier in the morning.

Karl decided to write his name on the blank line. Then he could put it into the box with the six tickets he'd already earned. With so many tickets, he would most probably be the winner! Then he could choose the pink toy pig for his sister's birthday, just like he had been hoping.

He smiled and reached for the pencil. Suddenly his fingers stopped. There was a strange feeling in his chest, and it wasn't his heartbeat. "Finders are keepers, right?" he wondered. He looked out of the window and tried to figure it out. On the one hand, he did find the ticket, but he hadn't earned it. Somebody must have lost it. But on the other hand, he did need this extra ticket for his great plan!

注意： 1. 续写词数应为 150左右; 2. 请按如下格式在答题卡的相应位置作答。

Karl looked at the blank name line for a  moment.

……

"Karl, I intend to give you another ticket!" Miss Evans said.

注意： (1)词数: 100 左右

Dear John,

……

Yours

LiHua

For thousands of years, people have told fables(寓言) (teach)a lesson or to pass on wisdom. Fables were part of the oral tradition of many early cultures, and the well-known Aesop's fables date to the (six) century B. C. Yet, the form of the fable still has values today,  Rachel Carson says in "A Fable for Tomorrow."

Carson uses a simple, direct style common to fable. In fact, her style and tone(口吻) are seemingly directed at children." There was once a town in the heart of America,  all life seemed to enjoy peaceful existence with its surroundings," her fable begins, (borrow) some familiar words from many age-old fables. Behind the simple style, however, is a serious message  (intend) for everyone.

(difference) from traditional fables, Carson's story ends with an accusation instead of a moral. She warns of the environmental dangers facing society, and she teaches that people must take responsibility  saving their environment.

The themes of traditional fables often deal with simple truths about everyday life. However, Carson's theme is a more weighty (warn) about environmental destruction. Carson proves that a simple lyric form that has been passed down through the ages can still (employ)today to draw attention to important truths.

"Hey!' You have a hairless spot on the back of your head!" Mom's alarmed cry hit me like a shock.

I tried to shrug(耸肩) it off. "It'll grow back." I worked to sound 1 .

At first, the loss was minimal. 2  the spot with my fingers became the top priority every day. No new hair, smooth as an egg. Weeks later, the spot was a little larger, and there was still no 3  of any hair poking through the skin. I began to 4 , but continued to try to be cool about it.

As days went by, my hair started to fall faster and more. 5  my fingers through it, I would stare at the alarming quantity of hair in my hands, willing this to 6  happening to me.

We went to see a doctor, who diagnosed my condition as alopecia ( 脱 发 症 ). He recommended an injection to try, which would be 7  to the head skin. I underwent several costly injections over a few months, but in vain.

8  the injection began to trouble my sleep, and we finally had to stop the9 . My hair still didn't grow back.

I had to wear a wig (假发) to school every day, worried it might slip one day and that everything would 10 . Though aware that I should 11  the fact to my friends, I was scared, not knowing how they would handle the information. 12  , hesitantly, I told them what was happening after days of struggle. To my surprise, they all thought nothing of it. This was a(n) 13  for me.

I came to realize that what had happened was not my fault, and not something I should feel14  of. I am learning that being bald doesn't change who I am, and if I don't let it affect my self 15  then other people are much more likely to accept me as I am, too.

Fragile. Oversensitive. Glued to their phones.  While there may be some truth to these stereotypical(刻板印象的) features, there might be more to this generation of teens than what is generally observed.

Never before have the lives of any generation of teens been as flooded with mobile technology and social media as the teens of this generation.  This is in contrast to the more village spirit or community-oriented attitude of their parents' and grandparents' days. We have teens who may not know about who lives in the unit next to theirs, much less offer a friendly no d or wave when they happen to cross paths with a neighbor.

 The very connectedness that social media brings about has led to an opening of minds and a flourishing(繁盛) of dialogue among people of diverse cultures and backgrounds. Logging onto platforms where people of all walks of life meet means that one is exposed to those people and their distinctive ways of life. In comparison, the parents or grandparents of this generation of teens probably did not have the same opportunity to get to know people outside of their social circles at their age, and are thus more likely to have fixed, stereotypical opinions of people different from them. This generation of teens, on the other hand, has the chance to use this technology to learn more about and attempt to understand the variety and diversity out there. 

To conclude, the teens of this generation differ in many ways from their predecessors(前辈),in some ways more positive than others.  Therefore, this generation of teens differs from past generations, with the changes around them.

A. No wonder the self-confidence and mental health of teens have been damaged.

B. Yet, the effects of technology on this generation of teens are not all bad.

C. Is this what comes to mind when we think of the teens of this generation?

D. Their parents or grandparents were likely less connected and more isolated.

E. Moreover, in the older generations' mind, the teens today are more individualistic.

F. As a result, this might be why the teens today are more open-minded and progressive.

G. Every generation is a product of the cultural, political and economic events of their time.

Joyce LeMay is an associate professor of business at Bethel University. She said that college seniors are always amazed by how much work goes into finding a job. "Many college seniors have great resumes(简历) from internships and other part-or full-time jobs. But they are surprised by how long the interviewing process takes," Many even become discouraged when they are rejected for a role, too. However, there are a lot of ways to increase your chances of finding the perfect role.

"Don't just look for jobs online," said LeMay. "Although it's easy to find jobs on the internet, over 85 percent of job seekers are also looking at the same jobs." "Hundreds of people can apply for each position and employers get inundated with responses," she said. If you do find a job online, LeMay recommends first looking within your own contacts." It's good to find out if you have someone in your network that could help you get connected," she said.

LeMay also advises writing a separate application for each role. "Your resume needs to stand out from your competition and the best way to do that is to customize(定制) it to the specific job you are applying for," said LeMay. In the experience section, be sure to highlight accomplishments that match the job description. This will show a future employer that you're qualified for the role.

A job search can take three to six months or longer, so don't take rejection personally. You will not get a job offer from every interview, but don't let that affect your confidence. It's important to keep trying." Many college graduates have their hopes set on one or two companies and when the job doesn't come through they are devastated(难以承受),"said LeMay. "Keep your mind and your options open—there are many incredible career opportunities you haven't heard of yet."

In the late 1990s, a scientist named Mark Blumberg stood in a lab at the University of Iowa watching a few sleeping newly born rats. He found that the baby rats kept making small, sharp movements in their sleep, and that their closed eyes moved from side to side in a phenomenon known as rapid eye movement (REM). Blumberg knew that the rats were fine, because he knew people do the same during REM sleep. And scientists have long had an explanation for the twitches(抽动) and REM: They are dreaming about their waking life.

However, as he dug deeper, he wondered why adult rats spend only about two hours of each night in REM sleep, while baby rats spend an unusual amount of time in REM, often sleeping for sixteen hours a day and dreaming for eight.

"If dreams are hints of waking life, adult rats who have more experiences should spend more time in REM sleep. Why do baby rats, whose eyes are still shut, spend so much time in REM sleep when they have too little to dream about?" he wondered. "Why do their eyes, their legs, tails and whiskers move hundreds of thousands of times during their sleep?"

In the end, Blumberg concluded that it might be the other way around ——perhaps the movements were sending signals to the brain to help it learn about the body.

"You wouldn't think that the body is something a brain needs to learn," he wrote in a paper. "But we aren't born with maps of our bodies. We can't be, because our bodies change by the day. But in waking life, we cannot move only a single muscle. Even the simplest act of swallowing(吞咽) employs more than thirty pairs of nerves and muscles working together. Our small and sharp movements in sleep, by contrast, are exact and precise: They involve muscles one at a time. In other words, such movements allow the muscles and nerves to form one-to-one connections that otherwise would be impossible. It's a process that's most important for the brain to learn about the body as we grow, suffer injuries and learn new skills.

The European Patent Office (EPO) on 4th July 2023 announced that Maasai inventor, Richard Turere, won first place in the Young Inventor Prize at the European Inventor Award 2023.

Turere invented the Lion Lights system at age 11. As a young Maasai boy, Turere was entrusted with the vital responsibility of protecting his family's cattle from predators(捕食者). He recognised the need for a solution to prevent lions and other predators from attacking livestock(牲畜), which led him to develop the innovative light system that has since gained global recognition.

Lion population in Africa is estimated to have declined by 43% in the past 20 years. Many lions are killed to stop them from eating precious livestock, significantly impacting the lion population, the area's biodiversity and tourism. Known as Lion Lights, Turere's invention is based on a simple concept: visually reproducing the human presence that keeps lions away. With changing sequences(序列) of flashing lights which are fixed on fences, the lions cannot become comfortable with the patterns and are discouraged from hunting livestock.

As word of Turere's technology and its success spread, other community members began requesting the system for their properties, and now over 2,000 homes in Kenya use Lion Lights. The system typically runs on solar energy but can also be coupled with wind power when the weather is cloudy or there is little sun.

In 2013, Turere founded the Lion Lights organization, which now cooperates with more than50 young people in his native village. Turere's commitment and resourcefulness have attracted international attention. His invention has been adopted in several other countries. "I want this story to inspire the young kids so that they too can do something.

Skydive Greene County

Come out and let us teach you how to skydive today! We are located in Xenia, Ohio and are within a reasonable driving distance of major cities in Ohio. Situated on a private airport, Skydive Greene County offers world-class training. We didn't start skydiving but we are Ohio's oldest skydiving school which opened in 1961!

Tandem Skydiving

Tandem skydiving is required if this is your first-time skydiving. After filling out paperwork and watching a short video, you will be ready to make your skydive. Somewhere around 11,500feet you will be secured to your tandem instructor. The door will open and you exit the plane.

Your freefall with your instructor will last for approximately 40-50 seconds. We can almost guarantee this will be the most exciting minute of your life as you reach the speed of around 120mph, falling for about two miles back to the earth!

Don't forget to have a video taken of your skydiving to show all those that didn't think you would jump from an airplane!

Static Line Courses

Once you have made your tandem skydiving, you can move on to our Static Line Program.The Static Line Jump is the traditional way to learn to skydive. We have classes throughout the year. Every student will be led through the entire day by a licensed instructor. Never does the student feel unattended. Once training is over, students will make their first jump on that very same day!

Price

$165.00 Tandem skydiving only

$175.00 Static Line Course only

Invite one of our professional videographers on your skydive:$125,00 DVD with photos

Come to learn with the best and make a skydive today! For further information, please call us at(937)372-0700orvisitourwebsitewww.greenecounty.com!

A Sweet Song

"Nothing will ever be the same again," Ally whispered.

Ally's father died last summer. It wasn't fair, Ally thought, frowning. Dad was young and had never been sick. Why had his heart suddenly stopped? Ally curled herself up in her father's favorite chair and looked at his picture on the bookcase. It was one of her favorite shots. Ally smiled. "I miss you, Dad," she said softly.

She felt a hand smoothing her hair and glanced up. " Why don't you come outside with me, Ally?" her mother asked. "The birds are nesting(筑巢) in the woods. By this time last year you had already taken dozens of pictures." But she knew bird watching wouldn't be the same this year. How could it be? Ally wondered. Ever since she could remember she and Dad had been a team, searching the woods for the special wood warbler(林中莺). "I'll be out in a while, I promise," she answered.

After her mother left, Ally reached for the photo album she and Dad had put together. On the cover was a photo of a tiny orange bird with blue-gray wings and black eyes. Dad cut it from a local newspaper. Ally smiled, remembering the excited look on Dad's face when he showed her the pretty bird.

"I can't believe someone spotted(发现) this little guy way up here in New Jersey," he said. "Wood warblers are usually found in the south, not this far north. I bet if we search real hard, Ally, we'll see this little guy together someday."

Ally leaned her head back and closed her eyes, letting her mind wander. She loved thinking about the times she and Dad had spent searching the woods for the little bird. They'd never spotted the warbler, but her father had an amazing way of making each outing seem special. He was her best friend, and when they were together Ally felt comfortable,  "If only I could get that good feeling back," she thought, sighing.

Staring at the bird, suddenly, she knew exactly what she had to do. Waving goodbye to her mom, she placed her camera around her neck and hurried outside. "Please let me see the warbler," she murmured to herself. She gave her worried Mom a kiss and then set off into the woods.

注意：1.所续写短文的词数应为 l50 左右;请按如下格式在答题卡的相应位置作答。2.续写部分分为两段,每段的开头语已为你写好。

Paragraph 1：

Familiar smells of the earth rose up to greet her the moment Ally stepped into the woods.

Paragraph 2：

All too soon the sun disappeared behind thick grey clouds and Ally was about to head home when a ringing birdsong floated down to her. 

 , a greater  to the rest of the world will help you to see things from different angles.

 we can say, however, is that culture and cuisine go   , and if you do not experience one, you can never really know the other.

by his uncle's encouragement, he promised to do his best to his family's expectations when studying overseas.

Snow suspected that the water pump was  .

Snow   the theory that cholera was caused by an infection from germs in food or water.